Electrical safety rules

Transcription

1 Electrical safety rules 2015

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3 DISCLAIMER The material contained in this publication has been developed for the use of ActewAGL, its contractors and all others working on or near ActewAGL s electricity network. It should be read in conjunction with any applicable Laws, Regulations, Technical Guidelines, Australian Standards and Internal Procedures. ActewAGL believes that to the best of its knowledge, the information contained herein is correct and current as at the date of its publication. However, ActewAGL gives no warranty as to the completeness, accuracy or suitability of the information contained herein. No party outside ActewAGL should act based on the information contained in this publication without first considering his or her own circumstances and if necessary, obtaining professional advice as to his or her legal obligations. Note however, that the Safe Approach Distances tabled within, are to be considered a minimum standard for all work near ActewAGL assets. Except for any liability that cannot be excluded or limited by law, ActewAGL excludes all liability for any loss or damage of any kind arising from or relating in any way to reliance on the information contained in this publication. ACKNOWLEDGEMENT OF COPYRIGHT The development of these Electrical Safety Rules was based on the Code of Practice on Electrical Safety for the Distribution Businesses in the Victorian Electricity Supply Industry (The Green Book). Copyright of The Green Book is jointly owned by the Victorian Major Electricity Companies. CitiPower Pty Ltd SP AusNet Powercor Australia Ltd Jemena United Energy These Victorian Major Electricity Companies, known as the Victorian Electricity Supply Industry (VESI) collectively, are members of the Distribution Sub-Committee of the Electrical Safety Committee in Victoria. The Distribution Sub-Committee has given its written permission to ActewAGL for The Green Book to be used as the basis for the development of ActewAGL s Electrical Safety Rules. ActewAGL thanks the VESI for its cooperation in this regard. BLUE BOOK ISSUES REGISTER For all queries or issues identified please the Work Practices Group at [email protected] ActewAGL Distribution ABN a partnership of Jemena Networks (ACT) Pty Ltd ABN and Icon Distribution Investments Limited ABN SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

4 ActewAGL s Life Saving Rules The ActewAGL Life Saving Rules are important rules that must never be broken. Breaking one of these rules could result in a serious injury or a fatality. They are non-negotiable rules that require constant reinforcement by managers, supervisors, team leaders and workers. Breaking a Life Saving Rule will result in consequences for the rule breaker/s. For those that see a Life Saving Rule being broken and choose to ignore it or let it go, they will also face consequences. Depending on the investigation results, consequences can range from education, coaching and counselling up to formal disciplinary action, including the possibility of employment termination. 2 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

5 The Life Saving Rules are: I will always... actively participate in a site job assessment before commencing every job, every day test and prove de-energised before commencing any non live work check and confirm equipment / apparatus is safe to energise only work on or near the electricity network when trained and authorised to do so implement required controls to manage site hazards have current training and authorisation for the plant and equipment that is to be operated check and wear PPE that is appropriate for the job abide by drug and alcohol rules Report incidents and near misses SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

6 PURPOSE The purpose of these Electrical Safety Rules (The Blue Book) is to specify the safe working requirements and minimum standards for workers working on, near or in the vicinity of ActewAGL s electrical apparatus within the Australian Capital Territory and the surrounding region into which ActewAGL s electricity networks may extend. These rules do not apply to customer installations beyond the network boundary with the exception of equipment for the purpose of metering. These Electrical Safety Rules are to be read in conjunction with associated documents detailing work practices and procedures. The rules and associated documents are intended to thoroughly specify the safe working requirements and minimum standards that will permit the ActewAGL electricity distribution network to be operated and maintained safely at a high standard. Safety incidents that occur in the electricity industry drive home the need for workers at all levels to understand and implement the requirements set out in these Electrical Safety Rules. These rules were created with recognition that they will need periodic revision. They shall be reviewed annually, with amendments to be communicated and issued. 4 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

7 SCOPE These Electrical Safety Rules (The Blue Book) define principles and are the basis for additional development of electrical safety procedures. Work shall be carried out in accordance with these rules and relevant approved procedures and/or approved practices. Acts, Regulations and Utility Services Licence Technical Codes, Standards and Guidelines Electrical Safety Rules (The Blue Book) ActewAGL Policies and Procedures Hierarchy of documentation for electrical safety ActewAGL s compliance with these Electrical Safety Rules assists in meeting obligations imposed by the Work Health and Safety Act, the Utilities Act and the electricity distribution licence issued to ActewAGL by the Independent Competition and Regulatory Commission. It is not expected that there would be any conflict between these Electrical Safety Rules and an Act or Regulation. If anyone identifies such a conflict, they are asked to immediately notify Work Practices or the General Manager Energy Networks, ActewAGL. In order to comply with the requirements of these Electrical Safety Rules, ActewAGL workers and its contractors shall either: a. apply the rules and procedures contained within these Electrical Safety Rules; or b. vary the procedures by: completing a hazard identification and risk assessment to ensure that workers are not exposed to any increase in risk; and ensuring that community and business standards for managing risk are met; and documenting the procedure through SWMS or other means; and ensuring any variations are endorsed by the General Manager Energy Networks and that the Safety Committee is informed in writing. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

8 Contents Acknowledgement of copyright 1 Blue book issues register 1 Purpose 4 Scope 5 1. Definitions 11 2 Safe approach distances to electrical apparatus General Safe approach distances persons Safe approach distances mobile plant Emergency situations Contact with live high voltage (HV) conductors by means of appliances Approach to live high voltage (HV) insulated cables Work in the vicinity of electrical apparatus Handling objects/loads Erection or dismantling of overhead conductors Possibility of leakage currents on poles Work by instructed persons 30 3 Training and authorisation General Ordinary persons signing onto electrical access permits Instructed persons signing onto electrical access authorities Authority to receive an electrical access authority Authority to receive a sanction for testing Authority to operate low voltage (LV) and/or high voltage (HV) electrical apparatus and issue access authorities Authority to operate the network Authority to work on live high voltage (HV) overhead lines using glove and barrier or stick procedures Authority to work on live low voltage (LV) electrical apparatus Authority to enter confined spaces Withdrawal and/or restriction of an authorisation First aid Perform rescue 35 6 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

9 3.14 Work safely at heights prevention of falls Work on poles 35 4 General safety requirements Hazard identification, risk assessment and control Personal protective equipment (PPE) First aid kits Fire extinguishers Emergency rescue kits Communications Labelling of electrical apparatus Ladders Use of safety observers Working alone or without a safety observer Fit for work Danger of materials which can conduct electricity Storage of materials Work in the vicinity of electric and magnetic fields Portable electric tools and equipment Design, construction and commissioning Danger tags 42 5 Operation of electrical apparatus Workers authorised to operate high voltage (HV) electrical apparatus Operator protection 45 6 Earthing of high voltage electrical apparatus Earthing hierarchy General Earthing for access to high voltage (HV) electrical apparatus Removal of earth when working under an electrical access authority Earthing of overhead lines High voltage (HV) metal-clad switch units Precautions prior to work near aerial communication cables Equipotential bonding 51 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

10 7 Issue of access authorities General Electrical access permit Sanction for testing Permit to work Electrical apparatus out of commission High voltage (HV) operating sticks Barriers and signs Working on insulated network, service or supervisory cables (SCADA) 69 8 Access for work on or near high voltage electrical apparatus General Live work high voltage (HV) Use and testing of operating and live-line equipment Insulated sticks Work on or near de-energised high voltage (HV) electrical apparatus Preparing high voltage (HV) electrical apparatus for access Suppression of auto-reclose on HV overhead feeders 84 9 Access to low voltage electrical apparatus General Temporary supply of electricity Work on or near live low voltage (LV) conductors Notification of work on de-energised low voltage (LV) electrical apparatus Work on de-energised low voltage (LV) electrical apparatus Testing, commissioning and decommissioning electrical apparatus Correct supply, polarity, and rotation Use of testing devices Clearance for service Connections to electrical apparatus Work on pilot cables Prior to making apparatus live for service Work in electrical stations Entry of electrical stations General working practices Hazards within electrical stations Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

11 12 Metering General Metering new installations Metering changes to existing installations Metering work on live equipment Metering work on transformer operated equipment Public lighting General Precautions to be taken Testing conductive objects Changing tubes or lamps from an elevating work platform Work by other personnel not under the supervision of ActewAGL General Work on abandoned cables Permit to work issued to non-actewagl personnel Work by tree surgeons requiring the isolation of overhead conductors Work by electrical contractors requiring the isolation of electrical apparatus Statement of condition of apparatus and plant (SCAP) 110 Appendix A ActewAGL policy and procedure list 115 Appendix B Reference documents 117 B1 Legislation and regulations 117 B2 Industry guidelines 117 B3 Australian standards 118 Version register 119 List of tables Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers 21 Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant 25 Table 3.1 Frequency of assessment training and authorisations 36 Table 5.1 Protection for electrical operations 46 Table 8.1 Safe approach distance (mm) to live conductors for authorised glove and barrier workers 79 Table 10.1 Insulation Resistance Values 98 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

12 List of figures Figure 2.1 Safe approach distance persons and workers 20 Figure 2.2 Safe approach distance mobile plant 24 Figure 3.1 Hierarchy of access authorities 31 Figure 4.1 Typical PPE requirements 37 Figure 4.2 Example of Danger Do Not Operate tag 43 Figure 5.1 Example of HV operating Gloves 45 Figure 6.1 Earthing hierarchy 47 Figure 6.2 Typical overhead earthing 50 Figure 7.1 Examples and diagram illustrating correct entry to a safe work area 66 Figure 7.2 Examples of various HV apparatus which is taped and/or danger tagged to control access to various parts of the apparatus 67 Figure 7.3 Isolation and restoration process 70 Figure 7.4 Blank Access Authority form as an Electrical Access Permit or Sanction for Testing or Permit to Work 72 Figure 9.1 Low voltage (LV) network topography and permit requirements 91 Figure 9.2 Examples of LV earthing or bonding 94 Figure 11.1 Example of operational earths in zone substation 100 Figure 11.2 Example of vehicle earthing in a zone substation 103 Figure 14.1 Example of a SCAP form 113 List of flowcharts Chart 7.1 Access authority sign-on checklist 71 Chart 8.1 General workflow for high voltage (HV) access 76 Chart 9.1 General workflow for low voltage (LV) access 86 Chart 9.2 General workflow for service access 92 Chart 14.1 Process for the issue of a SCAP Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

13 DEFINITIONS 1. DEFINITIONS 1 Access Authority means any form of authorisation which allows an authorised or instructed worker access to test or work on or near electrical apparatus. Access Authorities used in these rules are: Electrical Access Permit means a form of authorisation that allows persons and workers access to, and to work upon, electrical apparatus. Permit to Work means a form of authorisation providing permission to approved persons and workers, working near or up to safe approach distances of electricity apparatus. Sanction for Testing means a form of authorisation to allow energisation of electrical apparatus for testing purposes. ActewAGL means ActewAGL Distribution ABN Appliance means any instrument or device designed for use near or in direct contact with live conductors and/or electrical apparatus. Approved means having appropriate organisation endorsement in writing for a specified function (see Written or in Writing). Approved Examiner means a person who has the permission of ActewAGL as appropriate for the duty concerned, to act on its behalf. Authorised Worker means a worker with technical knowledge or relevant trade experience who has been approved, or has the delegated authority to act on behalf of ActewAGL, to perform the duty concerned. (Sign on, work and receive an Access Authority). Barrier means a rope, tape, barricade or alternative erected barrier in accordance with approved procedures for the purpose of issuing an access authority. Bonded means connected together in such a manner as to ensure that all bonded parts are maintained at the same electrical potential. Cable means an insulated conductor, or two or more such conductors, laid together, whether with or without fillings, reinforcements or protective coverings. Note: Cable, in these rules, also means low voltage and high voltage aerial bundled cable (ABC), covered conductor thick (CCT) and covered conductor (CC). Competent means the ability to perform particular tasks and duties to the standard of performance expected in the workplace. Competency requires the application of specified skills, knowledge and attitudes relevant to effective participation for completing a task. Conductor means a wire, cable, bar, tube or form of metal designed for carrying electric current. Confined Space means an enclosed or partially enclosed space that: a. is not designed or intended primarily to be occupied by a person; and b. is, or is designed or intended to be, at normal atmospheric pressure while any person is in the space; and c. is or is likely to be a risk to health and safety from: i. an atmosphere that does not have a safe oxygen level; or ii. contaminants, including airborne gases, vapours and dusts, that may cause injury from fire or explosion; or SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

14 DEFINITIONS 1 iii. iv. harmful concentrations of any airborne contaminants; or engulfment. Contractor means a Company and its employees or an individual, engaged by ActewAGL but not on a basis of employment, to carry out work, or provide services, for ActewAGL. Danger Do Not Operate Tag means a tag attached to the controls of an electrical apparatus to warn and prevent workers from inadvertent or unauthorised operation. De-energised means not connected to any source of electrical supply but not necessarily isolated, earthed, discharged or out of commission. Discharged means having been connected to the general mass of earth in such a manner as to remove any residual electrical energy in a conductor or conducting object. Earthed means the electrical connection of conductors and/or electrical apparatus connected directly to the general mass of earth to ensure and maintain the effective dissipation of electrical energy. Earthing Device means an approved device used for the earthing of conductors and/or electrical apparatus. Earths Operational Earth means approved earthing and short circuiting equipment applied to apparatus, as a requirement for the issue of an electrical access authority, for the purpose of proving the electrical apparatus to be de-energised and earthed. Note: All earths applied in a Zone Substation and on the underground network between a point of supply and the work site shall be regarded as Operational Earths. Working Earth means approved earthing and short circuiting equipment applied to apparatus that is under an electrical access authority. System Earth means a permanent electrical connection which would be anticipated to have standing fault or earth return currents in it during normal service. Electrical Apparatus means any HV or LV electrical equipment, including overhead lines and underground cables, the conductors of which are live or can be made live. Electricity Network means an interconnected system or transmission and/or distribution conductors and electrical apparatus (see Mains). Electrical Operator means a worker tested and deemed competent against an approved training standard who has written authorisation to carry out electrical operating work on HV and/or LV electrical apparatus. Electrical Operating Work means work: a. involving the operation of switching devices, links or fuses other than on a service; and b. providing access to the Electricity Network; and c. proving electrical conductors and/or electrical apparatus is de-energised; and d. where earthing and bonding, locking and/or tagging of electrical apparatus and erection of barriers and/or signs will be required. Electrical Operator s Authority means written authorisation issued by System Control to allow an electrical operator to carry out electrical operating work. 12 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

15 DEFINITIONS Electrical Station means any location, in which HV supply is switched, converted, controlled or transformed, or in which any similar electrical apparatus or plant is installed. 1 Stations more commonly referred to include: Bulk Supply Station means the station at which a HV customer purchases their electricity. Electricity can be purchased at any voltage. The electricity is metered and controlled within the station but not necessarily transformed. The electrical network and electrical apparatus beyond the bulk supply station may or may not be owned and/or operated by ActewAGL. Distribution Substation means a station in which electricity is controlled and transformed. The highest voltage in the station does not exceed 22,000V. Distribution Switching Station means a station in which electricity is controlled and possibly metered. The highest voltage in the station does not exceed 22,000V. For the purposes of these rules the requirements of a substation apply to a switching station. Zone Substation means a station in which electricity is controlled metered and transformed. The highest voltage in the station exceeds 22,000V. Zone Switching Station means a station in which electricity is controlled and metered. The highest voltage in the station exceeds 22,000V. For the purposes of these rules the requirements of a zone substation apply to a zone switching station. Electrical Worker means a worker who is qualified to work on or near live electrical apparatus for specific work to which the qualification pertains. Embedded Generating Unit means a generating unit that is connected directly to and/or operating in parallel with the distribution network that is, or can be, connected directly to the electricity network by means of an operating switch or switching device. The generating unit may include photovoltaic (PV) systems via inverters, rotating machines, solar, thermal and other renewable generation, such as wind power generation or fuel cells. Micro PV Generator means a Class 1 PV Generator which is up to 10kW single phase or 30kW three phase. Energised means connected to a source of electrical supply, or subject to hazardous induced or capacitive voltages. Equipotential Bonding means electrical connections intended to bring exposed conductive parts or extraneous conductive parts to the same or approximately the same potential, but not intended to carry current in normal service. Exposed Conductor means an electrical conductor, approach to which is not prevented by a barrier of rigid material or by insulation which is adequate under a relevant Australian Standard specification for the voltage concerned. Extra Low Voltage (ELV) means a nominal voltage not exceeding 50 volts alternating current or 120 volts ripple-free direct current. Fallen means dropped or come down from a higher place. Gas Insulated Switchgear (GIS) means a switch which relies on Sulphur Hexafluoride Gas (SF 6 ) as the insulating medium. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

16 DEFINITIONS 1 Glove and Barrier (Live HV Line) Worker means a worker tested against an approved training standard who has written authorisation to carry out live line work using Glove and Barrier or Stick techniques on HV electrical apparatus. Hazard means a situation or thing that has the potential to harm a person. High Voltage (HV) means a nominal voltage exceeding 1,000 volts alternating current or 1,500 volts direct current. Immediately Available means the item is located within a few metres of the work and is available without any delay such as the time taken to open doors and/or remove securing straps etc. Instructed Person means a person with technical knowledge or relevant trade experience to perform the task concerned under direct supervision of an authorised worker to enable them to avoid the dangers which electricity may create. (Sign on, work but not receive an Access Authority) Insulated means separated from adjoining conducting material by a non-conducting substance which provides resistance to the passage of current, or to disruptive discharges through or over the surface of the substance at the operating voltage, and to mitigate the danger of shock or injurious leakage of current. Insulated Stick means a stick of insulating material specifically designed, approved and tested for use in physically bridging the distance between the Glove and Barrier Worker and energised apparatus, between the energised apparatus and earth, between adjacent phases and to enable physical loads to be taken or tools to be applied to the stick (see Operating Stick). Isolated means disconnected from all possible sources of electricity supply by means which will prevent unintentional re-energisation of the electrical apparatus and which is assessed as a suitable step in the process of making safe for access to the electricity network. Isolator means a device which, for reasons of safety, provides in the open position, breaks to the circuit of a length appropriate to the voltage and the insulating medium. This device is not intended to make or break load currents. Live means energised or subject to hazardous induced or capacitive voltages. Live Work means all work performed on apparatus energised or capable of becoming energised without implementing the full protective practice of isolating, proving de-energised and earthing at the worksite. Low Voltage (LV) means a nominal voltage exceeding 50 volts alternating current or 120 volts ripplefree direct current, but not exceeding 1000 volts alternating current or 1500 volts direct current. Mains means a cable or conductor which has more than one service connected to it, excluding fused underground Tee d Service Cables (see Electricity Network). Main Switchboard means a switchboard from which the supply to the whole electrical installation can be controlled. Mobile Plant means cranes, elevating work platforms, trucks (tipping) or similar plant, any equipment fitted with a jib or boom and any device capable of raising or lowering a load. Note: Mobile plant can only be considered as a vehicle when in the normal travelling mode and not in the working mode when determining safe approach distances. Near means a situation where there is a reasonable possibility of a person, either directly or through any conducting medium (for example via mobile plant), coming within the relevant safe approach distances. 14 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

17 DEFINITIONS Network Boundary means the boundary between ActewAGL s Electricity Network and a customer s premises: a. at the point of attachment of an overhead service line to the customer s building or structure; or b. at the point of entry of an underground service cable to the customer s building or structure; or c. as otherwise agreed in accordance with the Electricity Network Boundary Code if neither (a) nor (b) apply. 1 Not Electrically Connected means disconnected from all sources of supply by the removal or absence of conductors appropriate to the voltage and insulating medium and not able to be made live by normal operating means, or bridging. Operating Stick means a stick specifically designed, approved and tested for carrying out operations on live electrical apparatus (see Insulated Stick). Ordinary Person means a person without sufficient training or experience to enable them to avoid the dangers which electrical apparatus may create. (Sign on to an Access Authority but not work) Out of Commission means electrical apparatus that is unserviceable and not fit for its intended use/ purpose/service in its current condition. A commissioning process is required before it can be reenergised. Out of Service Tag means a tag fitted to unserviceable or faulty tools, plant and equipment to warn against inadvertent operation. Overhead line means any aerial conductor or conductors with associated supports, insulators and other apparatus erected, or in the course of erection, for the purpose of the conveyance of electrical energy, excluding poles or supporting structures or anything in an Electrical Station. Person in Control (PIC) means a person who is nominated, responsible for and in control of a work site. This person shall remain at the site for the duration of the work to ensure: a. the work is completed as per the safe work method statement and procedures; and b. all hazards are identified, specific controls are implemented and that these controls remain effective for the duration of the work. Personal Protective Equipment (PPE) means approved clothing, equipment and/or substances, which when worn or correctly used, protect parts or all of the body from foreseeable risk of injury or disease at work or in the workplace. Plant means machinery, equipment, appliances, containers, implements and tools and includes all components or anything fitted or connected to any of those items (see also mobile plant). Potential (electrical) means a difference of electrical charge or a difference in voltage between two points. Practicable means capable of being done, or put into practice successfully; feasible. Procedure means the documentation of a systematic series of actions (or activities) directed to achieve a desired result. Recipient means an authorised worker to whom an access authority has been issued and is the worker responsible for compliance with the requirements of the access authority. Representative means a licensed electrician or a person who has been granted permission by ActewAGL to accept a SCAP, other than employees or contractors of ActewAGL. Risk means the possibility that harm (death, injury or illness) might occur when exposed to a hazard. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

18 DEFINITIONS 1 Safe Approach Distance means the minimum distance that shall be maintained by a person, worker, vehicle or mobile plant (including its load, controlling ropes and any other accessories) when approaching electrical apparatus other than for work in accordance with an access authority. Safety Observer means a worker with sufficient knowledge and experience of the task being performed and assessed as competent for the duty of observing and warning against unsafe approach to electrical apparatus or other unsafe conditions. Supervisory Control and Data Acquisition (SCADA) means a system providing remote control of apparatus. Service means a dedicated radial electrical apparatus running from the point of connection from ActewAGL s LV electricity network to the customer s network boundary (see Network boundary). Shall, shall not or must is to be interpreted as mandatory. Should is to be interpreted as advisory or discretionary. Statement of Condition of Apparatus and Plant (SCAP) means a declaration regarding the status of particular plant and/or apparatus connected to a private network, issued by an ActewAGL authorised worker to a representative, other than employees or contractors of ActewAGL. Supply means supply of electricity. Switch means a device capable of making, carrying and breaking currents under normal circuit conditions. It is also capable, in the open position, of satisfying the isolating requirement for an isolator. System Control means the functional area within ActewAGL that is responsible for the operation and security of the electrical systems, and controls access to the HV and LV electrical networks and apparatus (includes both Control and Dispatch). Tester in Charge means an authorised worker to whom a sanction for testing has been issued and is the worker responsible for compliance with the requirements of the sanction for testing. Testing Device means an approved device to be used for testing on the Electricity Network. Vehicle means a truck (non-tipping), car, utility, or other general purpose conveyance used for the carriage of persons or goods (see also mobile plant). Vicinity means a situation where it is unlikely that a person or worker will, either directly or through any conducting medium (for example via mobile plant), come within the relevant safe approach distances. Within Reach means at such a distance that can be touched by any part of the body or clothing or with any conducting object or non-approved object held in the hand. Work Site means a place where work is carried out for a business or undertaking and includes any place where a worker goes, or is likely to be, while at work. Worker means a person who carries out work in any capacity for a person conducting a business or undertaking, including work as: a. an employee; or b. a contractor or subcontractor; or c. an employee of a contractor or subcontractor; or d. employees of a labour hire company who has been assigned to work in the person s business or undertaking. 16 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

19 DEFINITIONS Working Alone means any worker working or travelling for work purposes on their own and without regular interaction with other people because of time, location and/or the nature of their work. A person is considered to be alone when they are: 1 a. on their own; or b. cannot be seen or heard by another person; or c. do not expect a visit from another person for some time; or d. in circumstances where emergency assistance is not immediately available if needed. Written (or in Writing) means recorded on paper or in an electronic form that is capable of being represented, reproduced or converted to writing. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

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21 2Section Safe approach distances to electrical apparatus PRINCIPLE Workers shall observe an appropriate safe approach distance when working, or operating vehicles or mobile plant, near electrical apparatus. Work in the vicinity of live electrical apparatus shall be carried out in a safe manner and control measures taken shall be consistent with the risk and work performed.

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23 SECTION 2 Safe approach distances to electrical apparatus 2.1 General The safe approach distances in these Electrical Safety Rules are based on an exclusion zone principle. This defines an area around the electrical apparatus into which no part of the worker, mobile plant or object (other than approved insulated objects) may encroach unless in accordance with Sections 8 and 9. 2 When working at these distances work practices shall be established to ensure workers, mobile plant and unapproved objects do not encroach on the safe approach distances. Refer to Table 2.1 Safe approach distance (mm) to exposed live conductors for ordinary persons, instructed persons and authorised workers. Unnecessary approach to electrical apparatus shall be avoided. Necessary approach to electrical apparatus shall be kept to a minimum and shall be restricted to the period required to perform the work. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

24 SECTION 2 Safe approach distances to electrical apparatus 2 SAFE APPROACH DISTANCE means the minimum distance that shall be maintained by a person, vehicle or mobile plant when approaching conductors or electrical apparatus other than for work in accordance with an access authority. IN THE VICINITY Where a person is unlikely (either directly or through any conducting medium) to come within the Safe Approach Distances CONDUCTOR When working on live conductors or electrical apparatus, workers must be trained and authorised ACCESS AUTHORITY DANGER ZONE SAFE APPROACH DISTANCE WORKING ON Working within the Safe Approach Distances in accordance with an Access Authority WORKING NEAR Where there is a reasonable possibility of a person (either directly or through any conducting medium) coming within the Safe Approach Distances Authorised worker or instructed person Ordinary person Movement Figure 2.1 Safe approach distance persons and workers 20 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

25 SECTION 2 Safe approach distances to electrical apparatus Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers Voltage Nominal phase to phase AC (kv) Ordinary person 1-4 Instructed person 1-3 Authorised worker LV including communications. catenaries connected to LV neutrals 1500 No contact Insulated contact Insulated LV 100 No contact Insulated contact Earthed metallic screened HV insulated conductor Unscreened HV insulated conductor up to and including Insulated contact HV up to and including Notes: 1. Deliberately avoid movements that could result in distances being infringed. 2. The distances specified are based on conductors not protected by a barrier of rigid material. For electrical apparatus protected by a barrier of rigid material the safe approach distance is the barrier itself (for example substation shell). Safe to touch tests and procedures shall be applied at all times. 3. The distances specified are based on work from a stable surface. Appropriate allowance shall be made for conductor sag and sway. 4. These figures are the minimum safe approach distance that shall be used by ordinary persons. For approach closer than these distances an ordinary person would need to become an instructed person. 5. When operating electrical apparatus with approved tools (for example Magnefix MD4 Operating Handle) the safe approach distance may be reduced to 300mm in conjunction with the requirements of Table 5.1 Protection for electrical operations. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

26 SECTION 2 Safe approach distances to electrical apparatus 2.2 Safe approach distances persons Safe approach distance ordinary persons The safe approach distances for an ordinary person approaching insulated, covered or exposed live conductors are shown in Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers. These are the distances beyond the reach of any part of the ordinary person's body or any conducting or unapproved object touching any part of the ordinary person's body. To maintain these minimum distances from overhead conductors, appropriate allowance shall be made for sag and sway under a variety of conditions Safe approach distance instructed persons and authorised workers Instructed person safe approach distances apply whilst undertaking duties under supervision or instruction by an authorised worker. Where continuous direct supervision is not provided to instructed persons, consideration shall be given to applying greater safe approach distances than those given in Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers, and if practicable, greater clearances should be maintained. The safe approach distances for an authorised worker approaching insulated, covered or exposed live conductors are shown in Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers. These are the distances beyond the reach of any part of the instructed person or authorised worker's body or any conducting or unapproved or uninsulated object touching any part of the instructed person or authorised worker's body. To maintain these minimum distances from overhead conductors, appropriate allowance shall be made for sag and sway under a variety of conditions Safe approach distance glove and barrier electrical workers Refer to Clause 8.2 Live work high voltage (HV) Safe approach distance vegetation clearing general Vegetation limbs shall be considered as conductive objects when within the safe approach distances of HV conductors. Before undertaking vegetation clearing activities, a risk assessment shall be conducted to assist in the identification and control of hazards to ensure that the work can be performed safely. Issues that shall be considered prior to commencing work: a. the suppression of auto-reclose; and b. positioning any mobile plant in use such that the safe approach distance can be maintained in all circumstances; and c. the use of safety observers and barriers and signs; and d. consideration of weather and environmental conditions (for example rain, wind, light, sag or sway of conductors); and 22 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

27 SECTION 2 Safe approach distances to electrical apparatus e. movement of trees or other vegetation when cut; and f. the use of insulated barriers, protective covers and insulated equipment; and g. de-energising the electrical apparatus; and h. isolating and earthing the electrical apparatus. Subject to the outcome of a risk assessment, vegetation below, but not contacting HV conductors, may be cut. Additional means of controlling the movement of limbs being cut should be assessed and action taken as appropriate. At no time shall personal safe approach distances be reduced. 2 Vegetation above, adjacent and/or contacting HV conductors shall only be cut by authorised workers in accordance with Clauses and below. Vegetation contacting bare live LV conductors may be cut only after a risk assessment has been performed. Vegetation overhanging LV conductors can be cut while the conductors remain live provided the movement of limbs being cut can be controlled Safe approach distance vegetation clearing by instructed person or authorised workers Workers performing vegetation clearing activities shall apply safe approach distances as identified in Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers and Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant, applicable to their level of training and authorisation and the type of plant and equipment being used. Those same workers when not contracted in vegetation cutting activities for ActewAGL are to refer to Section 14 Work by other personnel not under the supervision of ActewAGL, for guidance. Instructed person or authorised workers: a. are not to clear tree limbs overhanging HV conductors with the conductors energised, unless complying with Clause below; and b. are not permitted to clear vegetation from an elevating work platform positioned over the top of live HV conductors Safe approach distance vegetation clearing by workers not contracted to ActewAGL Instructed persons or authorised workers not contracted to ActewAGL are to refer to Section 14 for guidance before performing vegetation cutting activities in the vicinity of ActewAGL electrical apparatus Safe approach distance vegetation clearing by authorised live HV workers Only authorised HV glove and barrier or stick line workers are permitted to clear vegetation from an elevating work platform positioned over the top of live HV conductors (refer to Clause 2.3 Safe approach distances mobile plant). SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

28 SECTION 2 Safe approach distances to electrical apparatus 2 SAFE APPROACH DISTANCE means the minimum distance that shall be maintained by a person, vehicle or mobile plant when approaching conductors or electrical apparatus other than for work in accordance with an access authority. IN THE VICINITY Where a person is unlikely (either directly or through any conducting medium) to come within the Safe Approach Distances CONDUCTOR When working on live conductors or electrical apparatus, workers must be trained and authorised DANGER ZONE SAFE APPROACH DISTANCE ACCESS AUTHORITY WORKING ON Working within the Safe Approach Distances in accordance with an Access Authority WORKING NEAR Where there is a reasonable possibility of a person (either directly or through any conducting medium) coming within the Safe Approach Distances Mobile plant Movement Safety observer Figure 2.2 Safe approach distance mobile plant 24 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

29 SECTION 2 Safe approach distances to electrical apparatus Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant 1 Voltage Vehicles Mobile plant Nominal phase to phase AC (kv) Ordinary person Instructed person or authorised worker 2-4 Ordinary person Instructed person or authorised worker 2-4 Uninsulated Insulated 2 LV Contact HV up to and including Notes: 1. The distances specified are based on work from a stable surface. Appropriate allowance shall be made for conductor sag and sway and for uncontrolled movement of vehicle or plant due to any reason. 2. A safety observer is required. 3. Any part of the covered pole shall remain at least 300mm clear of any live, covered HV conductor/s, allowing for sag and sway of the conductors, as the pole is being erected. 4. An appropriate risk assessment shall be undertaken before work is performed. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

30 SECTION 2 Safe approach distances to electrical apparatus Ordinary persons in vehicles An ordinary person in control of any vehicle, excepting mobile plant when in working mode, shall ensure that no part of the vehicle or its load is placed or moved within the distances shown in Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant Instructed persons or authorised workers in vehicles Instructed persons or authorised workers in control of any vehicle, excepting mobile plant when in working mode, shall ensure that no part of the vehicle or its load is placed or moved within the distances shown in Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant. 2.3 Safe approach distances mobile plant Because of the physical capabilities of, and potential hazard to mobile plant working adjacent to live conductors and/or electrical apparatus, specific consideration (including earthing) shall be given to the use of mobile plant during the planning of the work. For safe approach distances to exposed live conductors for mobile plant refer to Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant Use of mobile plant Mobile plant shall only be used in the vicinity of live conductors and/or electrical apparatus after precautions appropriate to the particular circumstances have been considered and action taken to control the associated hazards and risks. When mobile plant is operated in working mode in the vicinity of live electrical apparatus, the possibility of inadvertent contact with live conductors shall be taken into account during the planning and execution of the work. The control measures to be considered within a risk assessment shall include: a. isolating and earthing electrical apparatus; and b. positioning the mobile plant such that the safe approach distance can be maintained in all circumstances; and c. the use of safety observers, barriers and signs; and d. the use of other precautions such as physical restrictions or control devices in conjunction with barriers; and e. the suppression of auto-reclose; and f. de-energising the conductors and/or electrical apparatus. When mobile plant may come near live electrical apparatus, the mobile plant shall be earthed. This shall be achieved by an approved earthing conductor directly connected to a station earth or other approved earthing system refer Clause 6.1 Earthing hierarchy. Mobile plant and where appropriate, vehicles, shall be earthed by a trailing earthing conductor to protect against the hazards presented by induced voltages refer Clause 11.2 d. Work in electrical stations general working practices. When mobile plant is operated from outside the mobile plant, precautions shall be taken to protect the operator from hazardous step and touch potentials. No worker other than the mobile plant operator shall touch the mobile plant whilst in operation. 26 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

31 SECTION 2 Safe approach distances to electrical apparatus Suspended loads shall be controlled by means of dry fibre rope (tag line) or other approved insulating medium. Neither the mobile plant nor conductive winch rope/load shall be touched by any worker while the mobile plant or any conducting object attached is in motion. During operation of the mobile plant only those workers at ground level actually involved in the work associated with the mobile plant shall be near the plant; all other workers shall remain clear Testing of mobile plant Mobile plant shall be used in accordance with procedures (refer Appendix A). Each elevating work platform vehicle used in the vicinity of overhead lines shall be subjected to approved HV electrical test on its insulated boom section/s at intervals not exceeding six months or more frequently depending on usage and work environment. The vehicle shall not be accepted as suitable for use in the vicinity of live overhead conductors unless it is within its test date. Lifting or pushing live HV conductors out of the way, in order to pass mobile plant below them is prohibited except in the following circumstances: a. where no other route is available and the mobile plant cannot be arranged to provide the required clearance to exposed live apparatus of voltage up to 132kV, arrangements shall be made for glove and barrier procedures to allow the conductors to be contacted and lifted or pushed out of the way; or b. live LV conductors fitted with approved insulating covers may be lifted or pushed out of the way to provide clearance over mobile plants or its load, but this shall only be done by a suitably trained electrical worker using approved equipment. The person in control of the work shall, through all workers engaged in the work, ensure that the mobile plant, its gear and load shall not approach live conductors and/or electrical apparatus within the distances as shown in Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant Special approach mobile plant When working under glove and barrier procedures, special safe approach distance may be applied where a safety observer is used. Where the conductors and load are suitably insulated, the load should remain a minimum of 300mm from the conductor (allowing for sag and sway of the conductor). Every effort should be made for the load to avoid inadvertent contact with the conductors. The person in control of the work shall, through all workers engaged in the work, ensure compliance with the special approach distances for mobile plant/lifting equipment and the following general requirements for all the work situations covered in these rules, including: a. pole structures carrying live circuits shall be checked to ensure that they are in a safe condition prior to the commencement of any work; and b. suppression of auto-reclose; and c. a safety observer shall be appointed; and d. for all work, either specific work instructions shall be issued or alternatively, ActewAGL s procedures shall apply; and e. contractors shall be issued with authorisation, in accordance with these Electrical Safety Rules; and f. an appropriate risk assessment shall be undertaken before work is performed. Pole structures may be lifted into exposed live LV conductors under direct supervision of the person in control. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

32 SECTION 2 Safe approach distances to electrical apparatus Pole structures may be lifted into exposed live HV conductors up to 33kV (for glove and barrier work) by electrical workers in accordance with glove and barrier or stick procedures. 2 Clearances shall be maintained in accordance with these Electrical Safety Rules. If these clearances cannot be maintained, work shall be carried out with: a. conductors de-energised; or b. conductors fitted with approved insulating covers. 2.4 Emergency situations In emergency situations where there is a likely risk of electric shock to workers or the public from electrical conductors or electrical apparatus, such as fallen conductors and/or from contact voltages on conductive structures for example fences, prompt action shall be taken to ensure people are kept well clear of the hazard at greater than safe approach distances. All electrical apparatus and conductors shall be considered live until proven de-energised by approved means. Initially for fallen or exposed electrical conductors a safety clearance of 8m for HV/LV conductors or 2m for LV only conductors shall be maintained. Reduced safe approach distances shall only be applied after System Control (via the electrical operator) has confirmed that the conductors will remain de-energised. Where practicable a worker is to remain on site to issue oral warnings to any worker or members of the public making unsafe approach to fallen or exposed electrical conductors and/or access may be controlled by the use of barriers or signs for example rope, ribbon, portable flashing lamps, witches hats or other appropriate means. Also refer to Clause 5.1 b) Workers authorised to operate electrical apparatus. 2.5 Contact with live high voltage (HV) conductors by means of appliances Only approved tested appliances shall be permitted to be brought within the safe approach distance or into direct contact with live HV conductors. Manufacturer supplied operating equipment (for example Magnefix MD4 operating handle) or approved earthing devices can be used as intended within the safe approach distance (refer Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers - Note 5). 2.6 Approach to live high voltage (HV) insulated cables General When work is performed near live HV insulated cables, appropriate precautions shall be taken to ensure that the insulation of the cables is not damaged. Cables shall not be moved whilst live. Insulated cables shall not be directly stood upon wherever practical. 28 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

33 SECTION 2 Safe approach distances to electrical apparatus Where it is unavoidable to stand upon live insulated cables a full risk assessment shall be conducted to assess the risk before any work is carried out. In excavated cable trenches or cable joint pits if there are cables that are live, as well as the de energised cables that are to be worked on, those live cables should be covered where practical by a minimum of 100mm of sand or barriers should be installed for mechanical protection. 2 Potholing to confirm live cable locations is allowed Earthed metallic sheathed or screened high voltage (HV) cable Contact by workers may be made to external surfaces of live HV cables with earthed metallic sheaths or screens. No contact shall be made to external surfaces of cable terminations that are not screened. 2.7 Work in the vicinity of electrical apparatus General When work is to be performed in the vicinity of live electrical apparatus, procedures shall be implemented in a way that minimises the risks involved. Before any work is performed a written risk assessment shall be undertaken and the location of live electrical apparatus and/or precautions recorded. Where control measures are identified during the risk assessment process, then instructions shall be issued to the workers outlining the measures. The control measures implemented shall minimise the risks involved and may include: a. defining the work area; or b. isolating and earthing the electrical apparatus; or c. de-energising live electrical apparatus adjacent to the work area; or d. the use of barriers and signs, or e. the use of approved covering; or f. the use of safety observers; or g. the issue of an access authority; or h. defining access routes. An access authority shall be issued in accordance with procedures (refer Appendix A). 2.8 Handling objects/loads When objects are being handled manually or by mechanical equipment, care shall be exercised to prevent the objects or the mechanical equipment infringing safe approach distances. For manual handling, appropriate work methods and an appropriate number of workers shall be used to maintain safe approach distances. For mechanical handling where there is a risk of infringing the safe approach distances to electrical conductors (refer Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers), the movement of loads shall be controlled by means of approved non- conducting ropes of minimum length or other approved means. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

34 SECTION 2 Safe approach distances to electrical apparatus 2 No worker outside the cabin of the mobile plant shall directly contact the load, mobile plant or any attached conducting objects. For protection of the mobile plant operator refer to Clause Use of mobile plant. Approved lifting devices used as pole mounted lifting equipment for example rope tackles and handlines, may be attached to pole structures by a line worker or suitably trained worker maintaining at least the clearances in Table 2.1 Safe approach distance (mm) to live conductors for ordinary, instructed persons and authorised workers, between exposed live conductors and any part of the lifting device, gear and load at all times. 2.9 Erection or dismantling of overhead conductors When overhead lines (other than insulated LV service lines) or long lengths of metal busbars are being erected, dismantled, or replaced and there is any possibility of contact with, or induction from, adjacent live conductors of any description, such conductors being moved shall be earthed. They shall be earthed by an approved device before work is commenced and shall remain earthed until the work is completed. A conductor being so erected shall be earthed before it is lifted from the ground. Consideration shall be given to the use of appropriate restraining devices to control such conductors when they are being moved. Appropriate measures at over or undercrossing positions are: a. the application of approved earthing devices to the new bare conductors at the over/ undercrossing location and, if practicable, attachment of an approved earthing device to new conductors adjacent to the future supply point; or b. construction of temporary physical barriers, such as timber structures, between the new and existing apparatus at the over/under crossing in accordance with approved procedures Possibility of leakage currents on poles Electrical workers working on poles carrying live conductors are warned of the possibility of electric shock from pole steps or other unearthed metal which may become live because of leakage currents. Where there is any indication that such conditions exist, poles shall not be climbed until the matter has been reported to the supervisor and appropriate action has been taken to deal with these conditions Work by instructed persons When instructed persons are required to work in the vicinity of electrical apparatus, the instructed person performing the work, the person in control of the work and the worker in charge of the electrical apparatus shall cooperate to ensure that the work is performed safely and that specific precautions are taken. 30 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

35 ESI SKILLS PASSPORT 3Section Training and authorisation PRINCIPLE Workers working on or near electrical apparatus shall have training relevant to these electrical safety rules and authorisation for the duty to be performed.

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37 SECTION 3 Training and authorisation 3.1 General ActewAGL s safe system of work shall include reference to appropriate training for all workers applying for or working on or near electrical apparatus. All authorisation levels and structure shall be reviewed annually by an approved worker in the organisation, or outside institutions, to ensure the relevance of the authorisation to current duties and work practices. 3 Authority to operate the network (Clause 3.7) - Network Operator Authority to operate electrical apparatus (Clause 3.6) - Electrical Operator Authority to receive a sanction for test (Clause 3.5) - Tester Authority to receive an electrical access permit (Clause 3.4) - Authorised Authority to sign onto an electrical access permit (Clause 3.3) - Instructed No authority (no training) (Clause 3.2) - Ordinary Figure 3.1 Hierarchy of access authorities 3.2 Ordinary persons signing onto electrical access permits Before signing onto an electrical access authority, ordinary persons shall: a. be instructed by an authorised worker; and b. agree to the continuous and dedicated supervision by a nominated authorised worker who is authorised to receive electrical access authorities; and c. agree to adhere to all instructions given at all times; and d. not undertake any physical work. Refer to Clause Workers and persons permitted to sign onto electrical access authorities. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

38 SECTION 3 Training and authorisation 3.3 Instructed persons signing onto electrical access authorities 3 Prior to signing onto an electrical access authority a worker shall: a. be under the direct supervision of an authorised worker; and b. have technical knowledge or relevant trade experience to perform the task concerned; and c. agree to adhere to any instructions given at all times. 3.4 Authority to receive an electrical access authority Before being authorised to be a recipient and receive electrical access authorities, a worker shall: a. complete an approved training course to demonstrate a basic understanding of electrical theory and awareness of the distribution and/ or transmission network; and b. complete an approved training course and be deemed competent to be a recipient and to receive electrical access authorities; and c. complete an assessment on this authority at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations. Such authorisation shall recognise the competence of the worker to supervise and employ workers safely, each according to their experience, to work on or near live electrical apparatus. 3.5 Authority to receive a sanction for testing Before being authorised to be a tester in charge and receive sanctions for testing, a worker shall: a. complete an approved training course and be deemed competent to be a recipient and to receive electrical access authorities; and b. complete an approved training course and be deemed competent to be a tester in charge and receive sanction for testing authorities; and c. complete an assessment on this authority at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations. 3.6 Authority to operate low voltage (LV) and/or high voltage (HV) electrical apparatus and issue access authorities Before being authorised as a LV and/or HV electrical operator, a worker shall: a. have demonstrated a basic understanding of electrical theory and system elements; and b. have completed an approved training course and been deemed competent for an electrical operator s authority; and c. have received local instruction and satisfied an approved examiner as to acquired knowledge and ability within the scope of the authority; and d. have authority to issue access authorities; and e. have completed any other pre-requisites. 32 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

39 SECTION 3 Training and authorisation Authorisation shall be by the issue of an approved electrical operator s authority, which shall designate the types of equipment and/or the operational area to which the authority applies and shall be signed by an authorised person. Each holder of an electrical operator s authority shall be assessed for competency in accordance with Table 3.1 Frequency of assessment training and authorisations and where appropriate refresher training shall be given. Such authorisation shall recognise the competence of the applicant to supervise testing and to employ workers safely, each according to their experience, near live electrical apparatus Authority to operate the network Before being authorised to operate the network using SCADA, a network operator shall: a. complete an approved training course and be deemed competent to operate the network using SCADA; and b. complete an assessment on these electrical safety rules at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations. 3.8 Authority to work on live high voltage (HV) overhead lines using glove and barrier or stick procedures Before working on live HV overhead lines and/or cable terminations a worker shall have: a. passed an approved HV live line training course; and b. been authorised by an approved examiner. Only the approved methods and equipment prescribed shall be used. Throughout these rules, such an authorised worker is referred to as a glove and barrier worker. Each authorised glove and barrier worker shall be assessed for competency in accordance with Table 3.1 Frequency of assessment training and authorisations, by an approved examiner and where appropriate training shall be given to restore competency. 3.9 Authority to work on live low voltage (LV) electrical apparatus Limits of authority No worker is to work on live LV electrical apparatus without authorisation. Only the type of work covered by the authorisation may be performed Authorisations for live low voltage (LV) work Work on live LV electrical apparatus, other than within customers installations shall be performed only by a worker who has passed an approved training course and received appropriate first aid training. The Electricity Safety Act provides that only workers licensed in accordance with that Act may perform work on customers LV installations. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

40 SECTION 3 Training and authorisation Work on ActewAGL s live LV overhead lines, live LV underground cables, and live metering installations shall be performed only with the approval of ActewAGL and only by: 3 a. an electrically trained worker or electrical tradesperson who has passed an approved training course appropriate to the activity; or b. an apprentice electrical worker working in accordance with the provisions of their defined training requirements Review of authorisation Where there may be an exposure to risk from electrical apparatus a person undertaking work shall be appropriately qualified, trained and deemed competent and authorised to carry out the work Authority to enter confined spaces Only workers who have been appropriately trained and have been authorised by an approved assessor are permitted to enter and work in designated confined spaces. All workers who work around confined spaces shall be trained in the identification of a confined space and shall complete refresher training at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations. All workers who enter confined spaces shall follow procedures and use confined space entry permits. Only the approved methods and equipment prescribed shall be used. All identified confined spaces shall have a clearly marked sign and entry shall be in accordance with procedures (refer Appendix A). Each authorised worker required to enter confined spaces shall complete refresher training at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations Withdrawal and/or restriction of an authorisation An authorisation may be withdrawn, restricted, suspended, altered or reviewed when it is apparent that the worker concerned: a. should no longer be authorised; or b. has an expired authorisation; or c. requires additional training or is assessed as not yet competent; or d. has been or is unable to perform activities within the scope of the authority due to any circumstance First aid All persons and workers working on, near or in the vicinity of electrical apparatus, shall be given first aid training, with ongoing refresher training, in accordance with industry and skills council guidelines. Training shall include skills in expired air resuscitation, external cardiac compression, shocks, burns, incident assessment and management and be conducted at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations. 34 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

41 SECTION 3 Training and authorisation 3.13 Perform rescue A rescue is not regarded as working on, near or in the vicinity of electrical apparatus. Hence, a suitably trained worker, of whatever status, may perform a rescue when they are the logical choice to do so subject to the following material concerning their personal safety. Before conducting a rescue on or near live exposed conductors the rescuer shall consider all hazards and methods to control the hazards to ensure that the rescue can be performed safely. Such controls may include de-energisation of the circuit, the use of insulated sticks and maintaining safe approach distances during the rescue. 3 Perform rescue instruction shall be conducted for workers working on the ActewAGL electricity network appropriate to the job family being performed at intervals in accordance with Table 3.1 Frequency of assessment training and authorisations, for the following: a. pole top rescue; b. elevating work platform (EWP) rescue; c. tower rescue; d. switchyard structures at heights rescue; e. live LV panel rescue; f. EWP controlled descent escape Work safely at heights prevention of falls Workers who access, egress from, transfer between and work at heights on poles, lattice structures, substation equipment and related structures, shall maintain attachment at all times except where gaining access by portable ladder, or where particular task requirements permit or require alternative means of managing the prevention of falls. Fall prevention principles are based on a hierarchy of controls. The selection of appropriate fall arrest equipment shall be based on identification of the hazards associated with access to, egress from, transfer between or work and the assessment of the risk of restrained fall, limited free fall or free fall Work on poles Before ascending a pole, the workers shall satisfy themselves that the pole is in a safe condition for climbing. The pole shall be tested in accordance with procedures (refer Appendix A). Particular care is required in the climbing of poles or posts that are the property of others for example temporary service posts. These shall not be climbed without first testing in accordance with procedures (refer Appendix A). Under no circumstances shall a pole be subjected to a sudden load change whilst a worker is aloft. When working at heights on poles, the worker shall not support themselves on pins, insulators, brackets or conductors. The worker shall remain attached at all times in accordance with procedures (refer Appendix A). Training and assessment intervals related to work on poles will be conducted in accordance with Table 3.1 Frequency of assessment training and authorisations. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

42 SECTION 3 Training and authorisation Table 3.1 Frequency of assessment training and authorisations 3 Clause Training or authorisation Frequency of assessment 1 Principle Apply ESI safety rules (The Blue Book) 12 months 3.4, 3.5 Apply access procedures to work on or near electrical network infrastructure 3.6 Perform power system substation switching operation to a given schedule 3.8 Maintain energised HV distribution overhead electrical apparatus (stick) Maintain energised HV distribution overhead electrical apparatus (glove) 3.10 Enter and work in confined spaces , 3.14 Identify confined spaces Provide first aid in an ESI environment Provide CPR Perform pole top rescue Perform EWP rescue Perform tower rescue Perform rescue from switchyard structures at heights Perform rescue from a live LV panel Perform EWP controlled descent escape Work safely at heights 10.1 Testing of connections to LV electricity networks (Polarity, phasing and rotation) 12 Months 12 months 12 months 3 years 12 months 12 months 3 years 12 months 11.1 General substation entry and awareness 2 years Notes: 1. An extension of one month may be granted by the General Manager for expiring authorisations only if training has been booked for that specific authorisation and training will be completed by the extended expiration deadline. 36 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

43 ! 4Section General safety requirements PRINCIPLE Consideration shall be given to provide additional procedures covering matters identified relevant to providing a comprehensive safe working environment. If a safety issue is recognised that is not controlled through an existing procedure, then an appropriate procedure should be prepared so as to maintain a safe working environment.

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45 SECTION 4 General safety requirements 4.1 Hazard identification, risk assessment and control Prior to the commencement of any work associated with ActewAGL work sites, the workers conducting the work shall identify the hazards, assess the risk, control identified hazards and maintain situational awareness throughout the work activity. All workers shall participate in an onsite risk assessment process that utilises the hierarchy of controls and shall include: a. identifying all hazards; and b. assessing the risk associated with each hazard; and c. eliminating or controlling the hazard; and d. monitoring and reviewing the effectiveness of controls; and e. ensuring a written record of the assessment is completed Personal protective equipment (PPE) All workers who may be exposed to possible electric shock, flash or other injury from electrical apparatus shall use approved personal protective equipment. Personal protective equipment shall include clothing with wrist to ankle cover and fully enclosed footwear. All protective equipment and apparel shall be worn in accordance with procedures (refer Appendix A), and shall be appropriate to the task being performed. Additional protective equipment shall be used in accordance with the type of work and the hazards involved. Figure 4.1 Typical PPE requirements SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

46 SECTION 4 General safety requirements 4.3 First aid kits An approved first aid kit shall be available for use in the event of an incident in accordance with the relevant procedure (refer Appendix A). 4.4 Fire extinguishers 4 An approved fire extinguisher, size and type being dependent on the task, shall be available for use in the event of an incident in accordance with the relevant procedure (refer Appendix A). 4.5 Emergency rescue kits Emergency rescue kits are utilised to help in the rescue of workers from poles, towers, elevating work platforms, LV busbars or confined spaces. Emergency rescue kits shall be immediately available and ready for use when workers are to work on or near electrical apparatus, or when working at heights. 4.6 Communications All communications relating to the operation of, or access to, electrical apparatus shall be clear and definite in accordance with the relevant procedure (refer Appendix A). Electrical apparatus shall be referred to by name and sufficient detail to give positive identification including location. Verbal instructions and statements shall be clearly defined and for switching and access authorities they shall be confirmed by repeating back to avoid misunderstanding. 4.7 Labelling of electrical apparatus For the purposes of identification and description, electrical apparatus shall, wherever practicable, be clearly labelled in accordance with procedures (refer Appendix A). 4.8 Ladders Conductive ladders (including wire-reinforced) shall not be used on, near or in the vicinity of, exposed live electrical apparatus. Before ascending an approved ladder the worker shall make sure the ladder is secure in accordance with procedures (refer Appendix A). 4.9 Use of safety observers Where it is considered after a risk assessment that a worker, equipment or mobile plant might inadvertently infringe safe approach distances, a safety observer shall be posted. Under no circumstances shall the safety observer be diverted to other work while the possibility of infringing the safe approach distance exists. 38 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

47 SECTION 4 General safety requirements Before any worker can act as a safety observer of plant and equipment, in proximity to electrical apparatus, they shall have an understanding of the task or work practice being observed. Safety observers shall be specifically instructed in their duties on each occasion they are posted. Where a worker is required to act as a safety observer the following conditions are to apply: a. the person in control of the work should select as a safety observer a worker who can observe and warn against possible infringement of safe approach distances; and b. the worker shall be specifically selected for each particular job; and c. the worker shall be instructed in the details of the work to be carried out, the approach distance for the task, access authority/s on issue, barriers, guards, signs, and any other relevant matters; and d. the worker shall use appropriate methods of communication that are suitable to overcome factors such as distance and noise; and e. the worker shall have the authority to temporarily suspend the relevant work at any time; and f. the safety observer shall be trained and assessed competent to perform a victim rescue. The person in control of the work and the safety observer shall identify aspects of the work environment that contribute to a safety observer being distracted from their task. These include: 4 a. environmental influences for example temperature, dust, noise; and b. ergonomics for example sitting, standing, kneeling; and c. the need for appropriate rest breaks and the change-over of observers. During the changeover of safety observers the first observer shall thoroughly brief the second observer in all the job details. In cases of plant and equipment usage, it shall be the sole duty of the safety observer to watch the movements of the mobile plant including any boom, shear legs, load and any other projections of the equipment and any items on or attached to it. The safety observer shall direct the driver/operator when such items are near the normal approach limit Working alone or without a safety observer A job risk assessment may determine that appropriate hazard control measures can be implemented in accordance with procedures so that work can be carried out safely without a Safety Observer in the following circumstances Work no more than two metres from the ground The following work may be undertaken by an authorised worker, without a safety observer, on or near the network providing they shall work to an approved work method statement and the workers feet are no more than 2 metres from the ground: a. operating work; and b. testing and fault finding; and c. cable locating work; and d. maintaining street lights and control equipment; and SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

48 SECTION 4 General safety requirements e. asset and vegetation inspections; and f. metering work; and g. customers supply disconnection or reconnection achieved through LV fuses, switch or circuit breaker; and h. working on ActewAGL switchboards or cubicles or ActewAGL assets on a privately owned switchboard or cubicle. 4 Note: An approved LV rescue kit is NOT required to be immediately available in the above circumstances. Nothing in Clause prevents the use of a safety observer being in attendance when deemed necessary through the job risk assessment or SWMS to perform the work safely Work above two metres from the ground The following work may be undertaken by an authorised worker, without a safety observer, on or near the network above two metres from the ground providing they shall work to an approved work method statement and keep their body, except for the forearms as far as possible below any exposed apparatus and conductors: a. testing and fault finding; and b. removal and replacement of insulated fuse carriers; and c. in an emergency situation where there is an immediate threat to an employee, the public or property. Note: An emergency rescue kit shall be immediately available in the above circumstances. Nothing in Clause prevents the use of a safety observer being in attendance when deemed necessary through the job risk assessment or SWMS to perform the work safely Fit for work Fit for work means that, as an individual, you shall be in a physical, mental and emotional state that will allow you to perform assigned tasks to standards set by the company, and in a manner that will not put yourself or others safety or health at risk. Supervisors, individuals and work colleagues are all responsible for ensuring that all workers are fit and safe for work at all times while at work. Alcohol, drugs, prescription medication, fatigue, mental alertness and physical condition of a worker may impede a worker s ability to work safely including the use of vehicles, plant and equipment. Workers shall not consume or be under the influence of alcohol or drugs during work hours. This shall be taken to include meal or rest breaks. Workers working for long or extended periods are at risk of fatigue which can diminish a person s ability to perform work tasks safely. No worker shall work for periods of time that will breach policy or procedures (refer Appendix A). 40 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

49 SECTION 4 General safety requirements 4.12 Danger of materials which can conduct electricity All materials, including liquids and gases shall be regarded as conducting materials unless there is definite knowledge to the contrary. In particular, it should be noted that: a. earth, concrete, wet or damp timber are conducting materials; and b. flame conducts electricity and care shall be exercised when using flame-producing equipment. Blow lamps are liable, under certain circumstances, to throw a long stream of flame and liquid; and c. steel tapes, metal reinforced tapes or rulers shall not be used near exposed electrical apparatus (some fabric tapes are metal reinforced). Only non-conductive tapes or non-conductive rulers shall be used in the vicinity of live electrical apparatus; and 4 d. metal objects, such as radio telephone units with telescopic aerials, mobile phones, torches and the like shall be handled with care when working on or near exposed electrical apparatus; and e. the wearing or carrying of personal metal effects such as jewellery, watches, keys, cigarette packets with conductive wrapping, etc., constitutes a hazard when working on or near live electrical apparatus. Such effects should be removed from the worker or care taken to ensure that they do not make contact with live parts. A particular danger is the falling of metal objects from pockets; and f. the liquids of certain fire extinguishers are conductive. Only carbon dioxide, or dry chemical powder fire extinguishers should be used on fires on or near live electrical apparatus; and g. vehicle tyres, although made of rubber, contain a high percentage of carbon and other conducting materials and therefore shall be regarded as conductors of electricity Storage of materials When work is being carried out in an area containing exposed electrical apparatus any materials stored in such areas shall be kept well away from the exposed electrical apparatus. Care shall be also taken to ensure that materials are not placed in positions where they may block doorways, obstruct the passage of persons and workers or hinder the carrying out of normal operations or work on the electrical apparatus Work in the vicinity of electric and magnetic fields In relation to Electric and Magnetic Fields (EMF), ActewAGL follows a policy of prudent avoidance which recommends avoiding unnecessary exposure to EMF whenever it can be achieved without undue inconvenience or at a modest expense. Workers with metal implants or medical implantable devices including cardiac pacemakers should consult their doctors and their supervisor for information on possible interferences with these devices prior to entering areas of strong electric and magnetic fields. Workers who have concerns or require further information should consult their supervisor and/or safety coordinator (refer Appendix B). SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

50 SECTION 4 General safety requirements Hz electric and magnetic fields Measurements of 50Hz electric and magnetic fields conducted to date indicate that occupational exposure levels are not exceeded in electrical network areas that are under normal access and work conditions. Information on typical field levels experienced around electrical network assets is available on request. Equipment is available to measure 50Hz EMF levels. If there is a reasonable concern that field levels exceed the specified limits, a measurement of EMF may be conducted Radio frequency electric and magnetic fields Radio frequency EMF may originate from communications circuits, and mobile transmitters fitted to public lighting columns. Maximum exposure levels for radio frequency (100kHz to 300GHz) EMF should not exceed limits specified by the relevant Australian standard (refer Appendix B). If there is a reasonable concern that field strength exceeds the specified limits, a measurement of EMF should be conducted Portable electric tools and equipment Portable electric tools and equipment, including generators, inverters and extension leads, shall be approved, used, repaired and tested as detailed in the relevant procedure (refer Appendix A). No portable tools shall be directly connected to mains or busbars. All electrical hand tools shall be used in conjunction with residual current devices (RCD) protection, either portable or fixed. Double insulated or battery operated tools should be used, if available, in preference to single insulated tools Design, construction and commissioning Electrical asset design, construction and commissioning standards, procedures and processes shall ensure work health and safety legislation and regulations are considered to ensure that the safe access outlined in these safety rules can be achieved Danger tags Danger Do Not Operate tags shall: a. be attached to the controls of operable electrical apparatus to warn workers against inadvertent or unauthorised operation (that would endanger the safety of workers and persons or the reliability and quality of supply) unless attachment to the controls is impractical in which case danger tags shall be attached in the next best locations to effect the warning; and b. only be installed, altered or removed by authorised workers; and c. also be fitted to unserviceable equipment to warn against inadvertent energisation or operation. 42 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

51 SECTION 4 General safety requirements Danger tags shall be clearly labelled with contact name, phone number, date and details of why the tag has been applied for example SSR number, description of fault, etc. Workers shall not remove or alter in any way any tags that have been applied, without consulting System Control or the worker who attached the tag. Danger tags, which have been installed by the electrical operator, shall only be removed by an electrical operator under direction from System Control (refer Appendix A). 4 Isolated due to fault 15/04/2015 Figure 4.2 Example of Danger Do Not Operate tag SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

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53 5Section Operation of electrical apparatus PRINCIPLE Only authorised workers may undertake switching and associated duties on electrical apparatus.

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55 SECTION 5 Operation of electrical apparatus 5.1 Workers authorised to operate high voltage (HV) electrical apparatus Switching and associated duties on electrical apparatus should only be performed by electrical operators whose authorisation, training, duties and instructions cover the particular electrical apparatus. All such switching shall be under the instruction of System Control. Any electrical apparatus found to be defective shall be danger tagged. Danger tagged electrical apparatus shall not be operated without reference to System Control (refer Clause 4.17 Danger tags). However, any worker with appropriate skills may perform switching operations in the following circumstances: a. when specifically instructed by, or authorised by, System Control; or b. in an emergency involving serious risk to workers, the public or property (refer Clause 2.4 Emergency situations). After any such emergency switching, System Control shall be notified as soon as possible. Electrical apparatus so disconnected shall not be reconnected without instruction from System Control Operator protection During switching and associated duties on electrical apparatus, an operator shall wear personal protective equipment as detailed in Clause 4.2 Personal protective equipment and Table 5.1 Protection for electrical operations. Figure 5.1 Example of HV operating Gloves SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

56 SECTION 5 Operation of electrical apparatus Table 5.1 Protection for electrical operations VOLTAGE APPARATUS ACTION OPERATOR PROTECTION 1 LOW (LV) 50 to 1000V AC Ground mounted fuse and/ or link Fully enclosed circuit breaker Partially enclosed and/or unenclosed circuit breaker Opening and closing Insulated gloves 2 Opening and closing Minimum PPE 1 Opening and closing Insulated gloves 2 5 HIGH (HV) >1000V AC Overhead fuse and/or link Opening and closing Insulated operating stick 3 Overhead gas insulated switch, fuse, and/or link Ground mounted circuit breaker (with metal handle) Resin 6 or non-metal clad switchgear Metal clad and rackable switchgear Opening and closing and earthing Opening and closing and earthing Opening and closing and earthing Opening and closing and earthing Insulated operating stick 3 Insulated gloves 2 Insulated gloves 2 and insulated operating stick 3 and dry base or insulated medium 4 Insulated gloves 2 and dry base or insulated medium 4 Outside apparatus in a zone substation Gas insulated switchgear (GIS) in a zone substation Opening and closing Insulated gloves 2 Earthing device (handle) Insulated gloves 2 Earthing portable Insulated operating stick 3 Opening and closing and earthing Insulated gloves 2 and dry base LV and HV All apparatus Testing 5 Insulated gloves 2 or insulated operating/testing stick 3 Notes: 1. Minimum PPE worn during all types of operations shall be hard hat and safety glasses or face shield. 2. Insulated gloves means approved electrical insulating gloves that shall be worn on both hands with mechanical protection (outer gloves), visually inspected (in date) and air tested prior to each use to ensure the integrity of the glove. 3. If unable to maintain a minimum distance of 400mm from electrical apparatus, insulated gloves shall be worn. 4. Insulated medium means a HV mat, two overlapped LV mats, a wooden or fibreglass ladder and/or approved and tested insulated stick. 5. Fully insulated test points do not require insulated gloves to carry out testing. 6. Work on Holec Magnefix MD4 switchgear (Hazemeyer) shall be in accordance with procedures (refer Appendix A). 46 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

57 6Section Earthing of high voltage electrical apparatus PRINCIPLE Earthing devices shall be applied by an authorised worker following a safe to earth confirmation and placed to ensure the safety of the workers.

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59 SECTION 6 Earthing of high voltage electrical apparatus 6.1 Earthing hierarchy The choice of connection for a portable earthing device should where practicable be made on the basis of the following order of preference Permanently installed earthing system at work site Permanently installed earthing system close as possible to work site (within 2km) Earthing ferrule in concrete pole at work site Earthing ferrule in concrete pole close as possible to work site (within 2km) Permanently installed earthing system or concrete pole earthing ferrule within isolation area Ground rod of installed pole stay or permanently driven pole earth stake or permanently driven pole nail Temporary earth stake (driven to full depth) or otherwise firmly anchored 6 Figure 6.1 Earthing hierarchy Note: Options 6 or 7 should only be used for the first (operational) earth if options 1 to 5 are not available. 6.2 General Only approved earthing devices shall be used and they shall only be applied after the circuit or electrical apparatus is isolated and after confirmation by an approved Safe to Earth method in accordance with procedures (refer Appendix A). Fuses shall not be included in earthing circuits. Protection shall be suppressed on circuit breakers if used for earthing. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

60 SECTION 6 Earthing of high voltage electrical apparatus In applying an earthing device, it shall be connected to earth before it is applied to the conductors, and it shall be removed from the conductors before it is disconnected from earth. It is preferable that conductors are also bonded via the earthing device. Wherever practicable, an earth shall be applied and removed by an approved device. When hand application or removal of an earth to switchgear is unavoidable: a. all phases shall be discharged; and b. another earth applied with an approved device shall be maintained in contact with each conductor in turn while the hand applied earth is being attached or removed (refer to Clause 6.6 High voltage (HV) metal-clad switch units). When applying a portable earthing device that is not connected to a permanently installed station earthing system it shall be regarded as liable to become live until the circuit earthing is complete. 6 There are some situations where an electrical operator cannot comply with the clearances specified as safe approach distance, when applying earths to electrical apparatus during the preparation for access. In these situations procedures may permit such approach only to that part of the electrical apparatus which already has local isolation and earthing. 6.3 Earthing for access to high voltage (HV) electrical apparatus Earths shall be applied such that conductors within the work area are effectively earthed or have an earth placed between the work area and each point of supply (refer to Clause for interconnected LV). Wherever practicable, earths shall be placed at the site of the work. Prior to access, earthing shall be confirmed by an approved indication such as: a. sighting of an operational earth applied to exposed electrical apparatus; or b. an approved position indicator (semaphore), and/or operating handle/lever, showing a device to be in the earthed position. Whilst making and breaking bridge connections, both sides of the bridge connection should be maintained at the same potential using hot line leads, hoppers or jumpers Operational earths In earthing electrical apparatus for access, earths applied by the electrical operator, as noted on the access authority, shall be considered operational earths. The operational earths shall be applied by or under direct supervision of an electrical operator and they shall be applied before an electrical access authority is issued. All operational earths shall be recorded on the electrical access authority prior to issue and shall be under the control of System Control. Operational earths shall not be removed from electrical apparatus or otherwise altered under an access authority without permission from System Control. After permission is granted by System Control to modify earthing the recipient shall notify all staff signed on to or affected by the access authority of the change in earthing conditions. All earths applied in a Zone substation and on the underground network between a point of supply and the work site shall be regarded as operational earths. 48 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

61 SECTION 6 Earthing of high voltage electrical apparatus Working earths After access has been given to HV electrical apparatus, additional working earths shall be applied as necessary to maximise workers safety and to visually indicate the isolated and at earth potential condition of the electrical apparatus. These working earths should be applied within the accessed area in the order of preference set out in Figure 6.1 Earthing hierarchy. All working earths applied during the currency of the access authority shall be recorded on the access authority. Working earths are under the control of the recipient of the access authority. An operational earth, designated and/or used by workers as a working earth, shall remain under the control of System Control. The recipient shall ensure that: a. all working earths are removed before relinquishment of the access authority; and b. all earths applied by work crews for testing purposes are removed before the relinquishment of the access authority; and c. operational earths are not removed without permission from System Control before cancellation of the access authority. For earthing requirements regarding mobile plant refer to Clause Use of mobile plant System earths If part of an earthing system is broken dangerous voltages may occur. When it is necessary to break a system earth, adequately rated bonds or jumpers shall be installed before the break is made. System earths on electrical apparatus shall not be removed while the apparatus is in service unless it is specifically known that this can be done safely. Workers shall consult a supervisor when a system earth is found to be broken. 6.4 Removal of earth when working under an electrical access authority During work under an electrical access authority, the recipient shall request permission from System Control for the removal of an earth for insulation resistance testing, reconductoring or other purposes, only if such action is considered necessary and safe, and provided: a. System Control grants permission and confirms that the removal of the earth will not affect any other electrical access authorities on issue; and b. all workers likely to be affected by the removal of the earth are notified; and c. when known the proposed change shall be noted under special provisions on the electrical access authority. Once the earth is removed the recipient shall notify System Control of the removal. The earth removed shall be replaced in the same, or another equally effective position, as soon as possible and the recipient shall notify System Control that the earth has been restored. Permission shall be sought from System Control for removal of operational earths at completion of works prior to relinquishment of the access authority. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

62 SECTION 6 Earthing of high voltage electrical apparatus 6.5 Earthing of overhead lines Where an overhead line can only be earthed using temporarily driven earth spikes the work planning shall consider protection against the hazards resulting from energisation and step and touch potentials (refer Figure 6.1 Earthing hierarchy). During the discharging and earthing of overhead lines, no workers other than the person applying the earth shall approach within 8m of the earthing device, its connections or ladders, poles, or structures from which the earthing device is being applied. The electrical operator in control of the switching activity shall advise the workers when earthing operations are completed. After earthing is complete, in order to avoid step and touch potential, unnecessary approach to earths shall be avoided. Where additional working earths are required they shall be applied so as at least one set is visible from the worksite. 6 Figure 6.2 Typical overhead earthing 50 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

63 SECTION 6 Earthing of high voltage electrical apparatus 6.6 High voltage (HV) metal-clad switch units For metal-clad switch units where it is not possible to directly earth conductors and circuits, the method of earthing shall be specially considered by the electrical operator responsible for the earthing and the person in control of the work, particularly in regard to the number and location of earths. The application of earthing devices to the isolated contacts in the spouts of metal-clad switchgear shall be supervised by an authorised worker, unless the devices are specifically approved for application by a single worker. Hand applied spout earths shall not be used if there are alternative earthing devices available to be used (refer to Clause 6.2 Earthing of high voltage (HV) electrical apparatus). If no alternative earthing device is available and hand held spout earths are to be applied to a cable circuit, the remote end of the cable shall be earthed first and the busbar isolated. If hand held spout earths are to be applied to multi-busbar equipment all busbars shall be isolated. Assistance shall be provided by another electrical operator during the application of hand held spout earths. 6.7 Precautions prior to work near aerial communication cables 6 Communication cables have been installed on ActewAGL poles known as joint use poles. Caution is required because of the possibility of induced voltages associated with parallel HV lines and the catenary wire of the aerial communication cables and the possibility of transfer voltages on the catenary wire. Catenary wires supporting communication cables present a possible hazard to a work site. Depending on the installation arrangements of the catenary, the catenary could be either earthed and pose a risk when working on live mains and apparatus; or be effectively live (through induction) and compromise an isolated work site. Special precautions, such as matting, shall be taken to cover catenary support wires to reduce the risk of inadvertent energisation of the catenary wire. Any work involving the disconnection of the catenary wire from a permanent earth shall not proceed until the catenary wire is earthed by means of local temporary earths attached to both sides of the sectionalising point. 6.8 Equipotential bonding Equipotential bonding is the practice of electrically connecting all exposed conductors or metallic items together so that they remain at the same electrical voltage. This protects workers from dangerous differences in voltage, reducing the chance of electric shock. Equipotential bonds are not designed to carry current in normal service. For practical application refer to the relevant procedure (Appendix A). Also refer to Clause Low voltage (LV) bonding. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

64 SECTION 6 Earthing of high voltage electrical apparatus Overhead Where practicable, work on all isolated HV apparatus shall proceed under equipotential or earthed conditions, such that: a. the conductors are kept at the work area earthed potential; and b. all conductive materials within reach are kept at the work area earthed potential; and c. there is no possibility that workers can become the bridge between two points of different potential Underground In circumstances where the work involves direct contact with the metallic HV cable sheath or armouring, and is not within the earth grid of a substation, one of the controls in Clause or shall be put in place Insulated working conditions All exposed metal parts of cables or pipes or any other parts which may be earthed, and the joint-hole or confined space itself, shall be covered with insulating material, suitable for the voltage concerned, while work proceeds on one conductor only Bonded earth mat conditions An equipotential area shall be created using wire mesh, all bonded together, covering the floor, walls etc. All cable sheaths shall be connected to the earth mat so that equipotential conditions are maintained. If not practical, the cable cores and earth screen shall be disconnected. 52 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

65 7Section Issue of access authorities PRINCIPLE An appropriate safe access system shall be applied before any work is carried out on or near electrical apparatus.

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67 SECTION 7 Issue of access authorities 7.1 General Workers planning work on, near, or in the vicinity of electrical apparatus, shall consider application of the appropriate access authority. Where authorised, instructed or ordinary persons are required to sign onto a job risk assessment that makes reference to an access authority, these persons shall be required to sign onto the access authority. The processes for the access authorities detailed in these electrical safety rules are outlined below in Clauses For work on or near HV electrical apparatus, Section 8 - Access for work on or near high voltage electrical apparatus, shall be read in conjunction with this section. For access to LV electrical apparatus, Section 9 - Access to low voltage electrical apparatus, shall be read in conjunction with this section. Where there is provision for the isolation point to be locked, an approved electrical lock shall be used until the access authority has been relinquished. 7.2 Electrical access permit Application for an electrical access permit Before making application for an electrical access permit, the applicant shall establish that the proposed work has been properly planned and can be carried out safely. Consideration shall be given to: 7 a. work method; and b. testing on restoration; and c. work environment; and d. the skills and authorisations of the workers. The electrical apparatus to be covered and its location shall be accurately defined and the work to be undertaken adequately described. An application using a System Switching Request (SSR) form shall be completed for all pre-arranged de-energised work on ActewAGL s electricity network to initiate access requirements. All such applications shall be submitted to System Control Multiple working parties Where an electrical access permit is issued along with any other electrical access permit on the same electrical apparatus, or where separate parties are working under the terms of one access permit, there shall be coordination by the person in control of the planning and performing the work to ensure that the actions of one worker shall not endanger the safety of others. Overall coordination of the access authority issues shall be the responsibility of System Control Work under a common electrical access permit An appropriately qualified worker having an overall appreciation of all aspects of the work to be performed shall be the person in control and coordinate all work. That worker will usually be the recipient of the electrical access permit and be the worker who has the on-site responsibility for the major portion of work to be carried out. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

68 SECTION 7 Issue of access authorities Multiple ownership Where the scope of electrical apparatus to be covered is owned by more than one organisation, a protocol shall be established between those organisations for processing the application to coordinate the outage and issue of a SCAP to the private organisations representative Issue, receipt, relinquishment and cancellation of electrical access permits An electrical access permit and a sanction for testing shall not be on issue on the same electrical apparatus simultaneously. An electrical access permit shall be issued by an electrical operator to the recipient in person and relinquished by the recipient. Relinquishment of an electrical access permit shall be done through System Control by the recipient at the completion of the work. Notification that the electrical access permit has been cancelled shall be by telephone or radio to System Control by the electrical operator. 7 At the time of issue the electrical operator shall clearly describe and, where practicable, show the electrical apparatus covered by the electrical access permit and the precautions taken, to the recipient and workers. It is the responsibility of the recipient to ensure every worker clearly understands the conditions and extent of the electrical access permit before they sign onto the electrical access permit. The electrical operator shall also describe or point out the nearest points of supply and any nearby live electrical apparatus. Both the electrical operator and the recipient shall ensure that the condition of the electrical apparatus, covered by the electrical access permit, is safe for the proposed work. All workers shall satisfy themselves concerning the precautions taken, the location of the points of supply, and the proximity of any nearby live electrical apparatus. Any worker involved in the issue or receipt of an electrical access permit who is not satisfied with the conditions, may apply to have additional precautions taken, either before the electrical access permit is issued or during the currency of the work. Subsequent to the issue of an electrical access permit additional workers may sign onto the electrical access permit, after appropriate instruction by the recipient. The person in control of the work shall perform a risk assessment and shall involve all workers in that risk assessment. Any particular precautions to be taken to eliminate hazards and prevent injury to any worker shall be specified before work is commenced. A risk assessment form shall be completed in accordance with procedures (refer Appendix A) Workers and persons permitted to sign onto electrical access permits Recipients of an electrical access permit shall be authorised recipients and workers who sign onto the electrical access permit shall be authorised or instructed to sign onto an electrical access permit. If an ordinary person is required to sign onto the electrical access authority it shall be the responsibility of the recipient to ensure that such persons are placed in the care of a worker who is authorised to receive electrical access authorities. 54 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

69 SECTION 7 Issue of access authorities Authorised workers and instructed persons electrical access permits The conditions under which an authorised worker and/or instructed person shall sign onto an electrical access permit is that they: a. understand the electrical apparatus covered and the limits of the electrical access permit; and b. are satisfied with the precautions taken; and c. are aware of the nearest live electrical apparatus; and d. have technical knowledge or relevant trade experience to perform the task concerned Ordinary persons electrical access permits The conditions under which an ordinary person shall sign onto an electrical access permit is that the person: a. understands the safe approach distance of an ordinary person to the electrical apparatus and the hazard controls of the work site; and b. agrees that no work is to be undertaken in relation to the electrical apparatus; and c. agrees to the continuous and dedicated supervision by a nominated authorised worker; and d. agrees to follow any instructions given at all times Rejection of a worker signing onto an electrical access permit A worker shall recommend the exclusion from an electrical access permit of any other worker who at any time is considered to be unsafe. Such instances shall be reported promptly to the person in control of the work and relevant supervisor Absence of an earth on electrical apparatus under electrical access permit Wherever practicable, electrical apparatus shall be earthed before the issue of an electrical access authority. Where an earth has not been applied to electrical apparatus prior to the issue of an electrical access authority the recipient shall arrange for discharging and/or earthing of the electrical apparatus before any worker touches the HV conductors. This clause would apply to isolated and racked out apparatus under maintenance Recipient working alone An electrical access authority may be issued to an authorised recipient who may work alone under the terms of an electrical access authority in accordance with procedures provided that: a. there is no exposed live electrical apparatus near the recipient, and there is no possibility of the recipient making contact under any circumstances; or b. warning notices are placed and suitable barriers are erected to prevent the recipient inadvertently infringing the normal safe approach distance to live electrical apparatus Issuer also a recipient An issuer of an electrical access authority may also be the recipient. This would only be the case when the work to be performed would be by a single worker or that no one else on site is an authorised recipient. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

70 SECTION 7 Issue of access authorities Temporary cessation of work or absence of workers from work site It shall be the duty of each worker signed onto an electrical access permit to sign off the electrical access permit before leaving the work site. Following a cessation of work, or when workers have been temporarily absent from the work site, each worker, before signing back onto the electrical access permit shall report to the recipient. The recipient shall confirm the condition of the electrical apparatus under electrical access authority and the nearby electrical apparatus. The workers shall not approach the electrical apparatus within the limits specified in Clause Safe approach distance - instructed persons and authorised workers, until they have re-signed onto the electrical access authority. If the recipient and all workers leave the work site the electrical access permit shall be relinquished unless an electrical access permit is required for work that will be carried over an extended period of time and approval gained from System Control prior to the permit being issued. Where an electrical access permit is for use over several days each worker shall sign off at the end of each work period, but the permit may be kept open with System Control approval. At the start of the next work period the recipient shall: 7 a. contact System Control to confirm that the isolation has not changed as noted in permit details; and b. visually check earths and isolation points. If there has been no change each worker can sign back onto the electrical access permit and commence work Transfer of an electrical access permit Where the recipient is unable to continue work or needs to leave the work site, the electrical access permit may be transferred to a new recipient. The transfer may only be carried out if: a. both workers are present on site; and b. the new recipient is an authorised recipient; and c. the original recipient ensures that the worker to whom the electrical access permit is to be transferred is fully aware and clearly understands all safety aspects of the permit and work prior to the transfer; and d. the work crew is notified. An electrical access permit may only be transferred once. If more than one transfer is required then the permit shall be cancelled and a new permit issued. Once the electrical access permit has been transferred, System Control shall be notified of the change of the recipient. If the intended new recipient has already signed onto the electrical access permit as a worker, that worker shall sign off before becoming the new recipient Working on multi-circuit overhead lines Where more than one HV circuit is carried on a pole or structure and work under an electrical access permit is to be performed on isolated and earthed circuits, while others remain live, the recipient shall ensure that, immediately before approaching near (Clause Safe approach distance - instructed persons and authorised workers) each worker correctly identifies the circuits. 56 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

71 SECTION 7 Issue of access authorities When work under an electrical access permit is to be carried out while other HV circuit/s on the same structure or pole remain live, each worker shall follow the procedure prescribed for this work (refer Appendix A). When conductor/s (other than a service line) are being erected, replaced or dismantled on any pole or structure which already carries live conductors of any description, the conductor/s being worked on shall be earthed until secured in their final positions and/or completely dismantled. Refer to Clause 2.9 Erection or dismantling of overhead conductors Change of electrical access permit conditions Earthing of overhead lines shall not be rendered ineffective by disconnection or by cutting conductor/s unless replacement earths are attached. The conditions of isolation specified on an electrical access permit shall not be changed until the electrical access permit is relinquished and then cancelled. The only exception being the removal of an earth as allowed under Clause 6.4 Removal of earth when working under an electrical access permit. A new electrical access permit may be issued after changes in isolation are complete Relinquishment and cancellation of an electrical access permit Workers signing off an electrical access permit 7 It shall be the duty of each worker that has signed onto an electrical access permit to sign off before the electrical access permit is relinquished Responsibilities of the recipient when relinquishing an electrical access permit When an electrical access permit is to be relinquished, the recipient shall: a. ensure that all workers signed onto the electrical access permit have ceased work covered by the electrical access permit and have signed off; and b. ensure that all tools and equipment are clear and will remain clear of the electrical apparatus and that the workers having signed off are aware that they shall remain clear; and c. sign off the electrical access permit to indicate that the electrical access permit has been relinquished; and d. advise electrical operator/system Control of any condition of the electrical apparatus which could affect its operation Absence of a worker at relinquishment Signing off an electrical access permit on behalf of another worker is not permitted. Where a worker leaves the site without signing off an electrical access permit all practical steps should be taken to obtain their signature. If the worker is unable to sign off the electrical access permit due to injury, illness or other legitimate reason, System Control may obtain authority from the appropriate supervisor for the cancellation on behalf of the absent worker. This shall be done in accordance with procedures (refer Appendix A). The supervisor shall sign off on behalf of the unavailable worker. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

72 SECTION 7 Issue of access authorities Lost or destroyed electrical access permit If an electrical access permit is lost or destroyed, work shall cease until an electrical operator attends to site, confirms the isolation and earthing (if applicable) and issues a new electrical access permit Responsibilities of the electrical operator when cancelling an electrical access permit The electrical operator shall: a. confirm that the recipient has relinquished the permit; and b. confirm that all workers have signed off; and c. verify with the recipient the condition of the apparatus; and d. check the suitability of the apparatus for service; and e. check the configuration of the apparatus in preparation for service. Electrical access permits shall be cancelled with System Control by an electrical operator by telephone or radio Exceptions for issuing an electrical access permit The exceptions for issuing and accepting electrical access permits are: a. in an emergency when there is an immediate risk to a person s life or property. The work shall be carried out under the supervision of the electrical worker who makes sure that the necessary procedures for isolating, proving de-energised, earthing and short circuiting the mains and apparatus are carried out in accordance with these rules; or b. if people are doing work outside of the minimum safe approach distances; or c. if qualified live line workers are working within the minimum safe approach distances and following authorised live line procedures (refer Appendix A); or d. all LV service conductors less than or equal to 50mm 2 and not requiring isolation of LV mains. 7.3 Sanction for testing General A sanction for testing shall be issued when, for the purpose of testing, it is necessary to work on electrical apparatus in such a manner that the prescribed procedure relating to an electrical access authority shall be waived. This would be done in order that the electrical apparatus may be made live from either normal or test sources at HV or at a voltage or current considered hazardous by the authorised applicant. A sanction for testing and any electrical access permit or permit to work shall not be on issue on the same electrical apparatus simultaneously. Only one sanction for testing shall be on issue on the same electrical apparatus at any time. A sanction for testing shall be issued on site by an electrical operator and relinquished by the tester in charge. Notification that sanction for testing has been relinquished shall be by telephone or radio to System Control by the tester in charge. 58 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

73 SECTION 7 Issue of access authorities Application for a sanction for testing Only an authorised applicant who can establish that the work is properly planned and can be done safely shall make an application for a sanction for testing. The electrical apparatus and the condition in which it is required shall be accurately defined and the proposed tests adequately described. This application request can be in the form of a verbal request in the case of cable fault locating and network restoration following emergency repairs to electrical apparatus. Where the scope of electrical apparatus to be covered is owned or operated by more than one Organisation, a protocol shall be established between those organisations for processing the application and testing requirements Workers permitted to sign onto sanctions for testing Workers permitted to sign onto sanctions for testing shall be authorised testers or be approved to work under that specific sanction for testing. Instructed persons may sign onto a sanction for test provided: a. it is noted on the risk assessment; and b. the tester in charge is aware Responsibilities of the tester in charge The tester in charge shall ensure that those workers, who will be making contact with electrical apparatus under test and any of the test connections, or approaching within the prescribed safe approach distance during the currency of the sanction for testing, sign onto the sanction for testing. 7 The tester in charge shall ensure that the workers are suitably experienced and trained for the work required of them and that adequate precautions are taken for the safety of all workers including ordinary persons as may be appropriate Rejection of an authorised tester A worker shall recommend the exclusion from a sanction for testing of any other worker who at any time is considered to be unsafe. Such instances shall be reported promptly to the person in control of the work and relevant supervisor Absence of an earth on electrical apparatus under sanction for testing Wherever practicable HV electrical apparatus shall be proved de-energised and earthed before the issue of a sanction for testing. This is to allow pre-test preparation work to be carried out. The tester in charge shall have control of any earths applied. The earths shall be reapplied at the completion of testing. Where an earth has not been applied to electrical apparatus prior to the issue of a sanction for testing, the tester shall arrange for discharging and/or earthing of the electrical apparatus before any worker touches the HV apparatus and/or conductors Issuer also an authorised tester An issuer of a sanction for testing shall not be the tester, but may sign onto the sanction for testing form as a worker. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

74 SECTION 7 Issue of access authorities Temporary cessation of work or absence of workers It shall be the duty of each worker signed onto a sanction for testing to sign off the sanction for testing before leaving the work site. Following a cessation of work, or when workers have been temporarily absent from the work site, each worker, before signing back onto the sanction for testing shall report to the tester in charge. The tester in charge shall confirm the condition of the electrical apparatus under sanction for testing and the adjacent electrical apparatus. The workers shall not approach the electrical apparatus within the limits specified in Clause Safe approach distance - instructed persons and authorised workers, until they have resigned onto the sanction for testing Transfer of a sanction for testing Where, in unforeseen circumstances, the tester in charge is unable to continue work or shall leave the work-site, the sanction for testing may be transferred to another authorised tester. The transfer may only be carried out if: 7 a. both workers are present on site; and b. the new tester in charge is an authorised tester; and c. the original tester in charge ensures that the worker to whom the sanction for testing is to be transferred is fully aware of all safety aspects of the sanction for testing and work prior to the transfer. Once the sanction for testing has been transferred, System Control shall be notified of the change of the tester in charge. If the intended new tester in charge has already signed onto the sanction for testing as a worker, that worker shall sign off before becoming the new tester in charge Relinquishment and cancellation of sanctions for testing Responsibilities of the tester in charge when relinquishing a sanction for testing At the conclusion of the testing, the tester in charge shall ensure that the electrical apparatus under test that has become electrically charged during test is fully discharged and left in a safe condition. When a sanction for testing is to be relinquished, the tester in charge shall: a. ensure that all workers signed onto the sanction for testing have ceased work covered by the sanction for testing and have signed off; and b. ensure that all equipment is clear of the electrical apparatus and that workers having signed off are aware that they shall remain clear; and c. sign off the sanction for testing as the tester in charge to indicate that it has been relinquished; and d. advise System Control of the condition of the electrical apparatus. 60 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

75 SECTION 7 Issue of access authorities Responsibilities of the electrical operator when cancelling a sanction for testing Sanction for testing shall be cancelled with System Control by an electrical operator. The electrical operator shall: a. confirm that the recipient has relinquished the permit; and b. confirm that all workers have signed off; and c. verify with the recipient the condition of the apparatus; and d. check the suitability of the apparatus for service; and e. check the configuration of the apparatus in preparation for service. 7.4 Permit to work A permit to work may be issued for work to be performed at safe approach distances or near isolated electrical apparatus Application for a permit to work Before making application for a permit to work, the applicant shall establish that the proposed work has been properly planned and can be carried out safely. Consideration shall be given to: 7 a. work method; and b. work environment; and c. the skills and authorisations of the workers. The electrical apparatus to be covered and its location shall be accurately defined and the work to be undertaken adequately described. A written application using a System Switching Request (SSR) form shall be completed for all prearranged de-energised work on ActewAGL s electricity network to initiate access requirements. All such applications shall be submitted to System Control Multiple working parties Where a permit to work is issued along with any other access authority (for example another permit to work, electrical access permit) on the same electrical apparatus, or where separate parties are working under the terms of one permit to work, there shall be coordination in planning and performing the work to ensure that the actions of one worker shall not endanger the safety of others. Overall coordination of the access authority issues shall be the responsibility of System Control Issue, receipt, relinquishment and cancellation of permits to work A permit to work and a sanction for testing shall not be on issue on the same electrical apparatus simultaneously. A permit to work shall be issued by an electrical operator to the recipient in person and relinquished by the recipient. Notification that the permit to work has been cancelled shall be by telephone or radio to System Control by the electrical operator. At the time of issue the electrical operator shall clearly describe and, where practicable, show the electrical apparatus covered by permit to work and the precautions taken, to the recipient. It is the SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

76 SECTION 7 Issue of access authorities responsibility of the recipient to ensure every worker clearly understands the conditions and extent of the permit to work before they sign onto the permit to work. The electrical operator shall also describe or point out the nearest points of supply and any nearby live electrical apparatus. Prior to the issue of a permit to work near or in the vicinity of HV conductors, one set of operational earths shall be applied within the isolation area (not necessarily visible from the work site) to prove de-energised (refer to Clause 14.4 Work by tree surgeons requiring the isolation of overhead conductors). Both the electrical operator and the recipient shall ensure that the condition of the electrical apparatus, covered by the electrical access permit, is safe for the proposed work. All workers shall satisfy themselves concerning the precautions taken, the location of the points of supply, and the proximity of any nearby live electrical apparatus. Any worker involved in the issue or receipt of a permit to work who is not satisfied with the conditions, may apply to have additional precautions taken, either before the permit to work is issued or during the currency of the work. 7 Subsequent to the issue of a permit to work additional workers may sign onto the permit to work, after appropriate instruction by the recipient. The person in control for the work shall perform a risk assessment and shall involve all workers in that risk assessment. Any particular precautions to be taken to eliminate hazards and prevent injury to any worker shall be specified before work is commenced. A risk assessment form shall be completed in accordance with procedures (refer Appendix A) Workers and persons permitted to sign onto permits to work Recipients of a permit to work shall be authorised recipients and workers who sign onto the permit to work shall be workers approved to work under that specific permit to work. If an ordinary person is required to sign onto the permit to work it shall be the responsibility of the recipient to ensure that such persons are placed in the care of a worker who is authorised to receive permits to work Workers permit to work The conditions under which a worker shall sign onto a permit to work are that the worker: a. understands the electrical apparatus covered and the limits of the permit to work; and b. is satisfied with the precautions taken; and c. is aware of the nearest live electrical apparatus; and d. have technical knowledge or relevant trade experience to perform the task concerned Ordinary persons permit to work The conditions under which an ordinary person shall sign onto a permit to work is that person: a. understands the safe approach distance of an ordinary person to the electrical apparatus and the hazard controls of the work site; and b. agrees that no work is to be undertaken in relation to the electrical apparatus; and 62 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

77 SECTION 7 Issue of access authorities c. agrees to the continuous and dedicated supervision by a nominated authorised worker; and d. agrees to follow to any instructions given at all times Rejection of a worker signing onto a permit to work A worker shall recommend the exclusion from a permit to work of any other worker who at any time is considered to be unsafe. Such instances shall be reported promptly to the person in control of the work and relevant supervisor Temporary cessation of work or absence of workers from work site It shall be the duty of each worker signed onto a permit to work to sign off the permit to work before leaving the work site. Following a cessation of work, or when workers have been temporarily absent from the work site, each worker, before signing back onto the permit to work shall report to the recipient. The recipient shall confirm the condition of the electrical apparatus under permit to work and the nearby electrical apparatus. The workers shall not approach the electrical apparatus until they have re-signed onto the permit to work If the recipient and all workers leave the work site the permit to work shall be relinquished Transfer of a permit to work Permits to work shall not be transferred. If the recipient is unable to continue work, or needs to leave the work site, the permit to work shall be relinquished Relinquishment and cancellation of a permit to work Workers signing off a permit to work It shall be the duty of each worker that has signed onto a permit to work to sign off before the permit to work is relinquished Responsibilities of the recipient when relinquishing a permit to work When a permit to work is to be relinquished, the recipient shall: a. ensure that all workers signed on to the permit to work have ceased work covered by the permit to work and have signed off; and b. ensure that all tools and equipment are clear and will remain clear of the electrical apparatus and that the workers having signed off are aware that they shall remain clear; and c. sign off the permit to work to indicate that the permit to work has been relinquished; and d. advise the electrical operator of any condition of the electrical apparatus which could affect its operation Absence of a worker at relinquishment Signing off a permit to work on behalf of another worker is not permitted. Where a worker leaves the site without signing off a permit to work all practical steps should be taken to obtain their signature. If the worker is unable to sign off the permit to work due to injury, illness or other legitimate reason, System Control may obtain authority from the appropriate supervisor for the cancellation on behalf of SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

78 SECTION 7 Issue of access authorities the absent worker. This shall be done in accordance with procedures (refer Appendix A). The supervisor shall sign off on behalf of the unavailable worker Lost or destroyed permit to work If a permit to work is lost or destroyed, work will cease until a new permit to work is issued Responsibilities of the electrical operator when cancelling a permit to work The electrical operator shall: a. confirm that the recipient has relinquished the permit; and b. confirm that all workers have signed off; and c. verify with the recipient the condition of the apparatus; and c. check the suitability of the apparatus for service; and d. check the configuration of the apparatus in preparation for service. Permits to work shall be cancelled with System Control by an electrical operator Electrical apparatus out of commission Declaring electrical apparatus out of commission An out of commission written declaration identifying the apparatus and the points of disconnection shall be submitted to System Control identifying associated control circuits, compressed air supplies, etc Access to out of commission electrical apparatus Electrical apparatus which is declared out of commission may be approached and worked upon without the issue of an access authority. When not immediately obvious a confirmation of apparatus status shall be sought from System Control. Although the electrical apparatus is not electrically connected due regard shall be given to the possibility of inadvertent energisation from other electrical apparatus, induction, lightning, static charges, or other means. 7.6 High voltage (HV) operating sticks HV operating sticks shall have a length which provides appropriate insulation from live parts and enables the worker using the stick to maintain the applicable safe approach distance (refer Section 2 Approach to electrical apparatus) at all times. When an operating stick rated for the voltage concerned is to be used in wet conditions or on voltages 66kV or 132kV, consideration shall be given to the potential for hazardous surface leakage currents. The operating stick shall have a minimum of 3 extensions when used for voltages of 66kV or 132kV. 64 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

79 SECTION 7 Issue of access authorities 7.7 Barriers and signs General Appropriate barriers shall be installed where necessary to indicate areas containing live electrical apparatus and the degree of hazard. Appropriate signs shall be installed where necessary to identify: a. electrical apparatus covered by an access authority; or b. adjacent live electrical apparatus and related hazard. Barriers shall not be altered or crossed except by specifically authorised workers (refer to Clause Barriers and signs for electrical access authorities) Hazards which are likely to be life threatening Situations where there is an immediate and probable risk of contact with live electrical apparatus shall be defined by the use of appropriate 'danger' barriers and/or signs. For example: a. areas where safe approach distance cannot be maintained; or b. areas in which HV testing is in progress Hazards which are not likely to be life threatening For the purpose of general identification of those areas where warning is necessary, warning barriers and/or signs shall be used for example between work areas and adjacent areas containing live HV electrical apparatus that do not present an electrical hazard to normal pedestrian movement Descriptions of barriers and signs Live sign Approved danger sign having the word 'LIVE' printed in white upon a red background or otherwise conforming to Australian standards (refer Appendix B). Danger barrier and/or sign A barrier and/or sign of suitable material preferably coloured red and white, or alternatively red, to indicate the presence of danger, or otherwise conforming to Australian standards (refer Appendix B). Under sanction for testing sign A danger sign of appropriate dimensions having the words 'Danger High Voltage Testing in Progress' printed in red on a white background or otherwise conforming to Australian standards (refer Appendix B). Warning barrier and/or sign A barrier and/or sign of suitable material, preferably coloured yellow, or alternatively yellow and black, to indicate the need for a warning, or otherwise conforming to Australian standards (refer Appendix B). Yellow tape barrier A barrier of suitable material, coloured yellow, to indicate a dividing line between live electrical apparatus and the electrical apparatus on which it is safe to perform work. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

80 SECTION 7 Issue of access authorities 7 Figure 7.1 Examples and diagram illustrating correct entry to a safe work area 66 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

81 SECTION 7 Issue of access authorities Bill Operator /04/ Isolated due to fault Figure 7.2 Examples of various HV apparatus which is taped and/or danger tagged to control access to various parts of the apparatus SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

82 SECTION 7 Issue of access authorities Barriers and signs for electrical access authorities Prior to the issue of an electrical access authority, barriers and/or signs shall be erected where practicable: a. to make it clearly evident, which electrical apparatus is under an electrical access authority and which is not; and b. to guard against mistaken or inadvertent contact with other electrical apparatus. Note: In particular instances where identification is positive, such as on some HV overhead lines and underground cables, and providing appropriate safeguards have been taken, procedures may dispense with the use of barriers and/or signs. The above shall be achieved with the appropriate use of signs and/or barriers, including live signs and yellow tape barriers. In positioning signs and barriers consideration shall be given to all approaches to the work area. The yellow tape barriers are used to define a safe area for work. Yellow tape barriers are used to indicate the dividing line between live electrical apparatus and the electrical apparatus on which it is safe to perform work. Only electrical operators shall erect and remove yellow tape barriers. 7 Additional barriers and signs may be erected after the issue of the electrical access authority by agreement between the electrical operator and the recipient. The provision and positioning of barriers shall take into account all likely and unlikely approaches to the work area. Workers working in a yellow tape area shall not pass over, under or interfere with such tape. After discussion with the recipient, other staff (supervisors or technical staff) may pass through the tape, for the purposes of inspection of other electrical apparatus not directly associated with the work under the access authority. When this occurs the recipient shall ensure the positioning of the tape shall be maintained to safeguard the interests of others Barriers and signs for sanction for testing Prior to the issue of a sanction for testing, barriers and signs shall be erected: a. to make it clearly evident which electrical apparatus is under sanction for testing and which is not; and b. to guard against mistaken or inadvertent contact with other electrical apparatus, or equipment under test. The above shall be achieved with the use of appropriate signs and barriers including danger barriers, live signs and under sanction for testing signs. In positioning signs and barriers consideration shall be given to all approaches to the work area. The electrical operator issuing the sanction for testing shall erect the initial yellow tape barriers. They are used to indicate the dividing line between live electrical apparatus and the electrical apparatus on which it is safe to perform work. Only electrical operators shall erect and remove yellow tape barriers. Danger barriers shall be used so as to indicate that equipment under sanction for testing presents an immediate and probable risk of contact with live electrical apparatus. The tester in charge shall erect danger barriers and Danger High Voltage Testing in Progress signs after the issue of the sanction for testing. The provision and positioning of barriers and signs shall take into account all likely and unlikely approaches to the work area including remote locations for example remote ends of cables under test. 68 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

83 SECTION 7 Issue of access authorities Only workers who have signed onto the sanction for testing are permitted to enter the designated test area. In particular instances where identification is positive, such as on some HV overhead lines and underground cables, and providing appropriate safeguards have been taken, procedures may dispense with the use of barriers and/or signs. 7.8 Working on insulated network, service or supervisory cables (SCADA) On-site identification of insulated cables (including out-ofcommission or abandoned cables) Where it is necessary for a cable to be de-energised to enable access to the cable, the de-energised state shall be confirmed on site by positive identification or by the use of a spiking device. Before working on cables remote from their exposed terminals it is essential that they be positively identified in accordance with approved procedures (refer Appendix A). There is a requirement for issue of an electrical access authority on a cable that has been isolated (not required if declared out of commission or abandoned). 7 Methods approved for the identification of cables are: a. tracing the cable visually throughout its entire length from one point of isolation where it can be proved de-energised to the point where the work is to be carried out; or b. use of a signal generator and sensing device at the work site; or c. by fault location tests, carried out on the cable, which produce a positive indication at the point where the work will be done; or d. by testing exposed cores at the work site of damaged cables with an approved test and/or continuity test; or e. cable has been spiked at the work site. Labels or drawings shall not be relied upon as a positive means of identification of cables Situations where cables should not be spiked Once identified and isolated, underground cables shall be proved de-energised by an approved spiking or cutting device wherever practicable. Where it is not practical to spike or cut a cable such as: a. a communications cable; or b. sheath repairs on a power or service cable; or c. an insulation repair where the cable is not to be cut; or d. installation of a tee joint by approved methods. Then the cable shall be identified either by: a. visual tracing from a point of isolation; or b. use of a signal generator and sensing device. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

84 SECTION 7 Issue of access authorities Spiking of cables When a cable is to be identified and spiked by a power operated spiking device, the following measures shall be taken: a. an electrical access permit (only required as per Clause 7.2.1, 7.5.2, 9.5.2) is to be issued for cable identification and spiking; where practicable the electrical condition of the remote ends of the cable shall be confirmed as isolated and earthed; and b. the relevant procedure shall be followed (refer Appendix A). Note: Providing the earth screen of the HV cable is connected elsewhere to an established earth, the use of an approved cable spiking device before contact is made with HV conductors satisfies the discharged and/or earthed requirement of Clause 8.1 a. Access for work on or near high voltage (HV) electrical apparatus Working under induced voltage and transfer voltage conditions Whenever work is to be carried out on a cable core, sheath, armouring, etc. of a fully insulated cable system, careful assessment shall first be given to the voltage that may appear on the conductor via induction or other means and appropriate earthing practices and work procedures adopted (refer to Clause 6.8 Equipotential bonding). advise relevant parties identify energy sources 1 de-energise or Isolate Isolation place tags, locks or permits 5 6 verify isolation commence work complete work check work 7 8 clear area Restoration 9 10 remove tags, locks or permits re-energise check operation Figure 7.3 Isolation and restoration process 70 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

85 SECTION 7 Issue of access authorities Check list prior to signing onto an access authority Start Yes Re-evaluation complete Can you identify the recipient for this job? Yes Have you received information from the recipient on the work to be carried out on the conductors and apparatus covered by this access authority? Yes Have all the appropriate isolations taken place? 7 Yes Has the appropriate earthing and/or bonding been applied, if applicable? Yes Do you understand all the yellow taping, danger tags and warning signs, if applicable? Yes No STOP! Ask your supervisor and re-evaluate Will all of your work be outside the safe approach distance (SAD) for mains and apparatus not covered by the access authority? Yes Do you fully understand the safety of work for this job? Yes Sign onto the access authority Access authorites used in these rules are: 7.2 electrical access permit 7.3 sanction for testing 7.4 permit to work. Chart 7.1 Access authority sign-on checklist SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

86 SECTION 7 Issue of access authorities Access Authority Page 1 of Access Authority Number: Switching Instruction Number: Access Authority Type: (mark 1 only with x) Electrical Access Permit Electrical Operator Name and Number: Telephone (mobile): Sanction for Testing Permit to Work This Access Authority has been issued in accordance with the ActewAGL Electrical Safety Rules for the following work: Location: Description of work: Voltage Isolated at or towards: 7 Operational earths located at: EXAMPLE Time Removed Special provisions: Low voltage parallels located at: Issue of Access Authority: I hereby issue this Access Authority to the Authorised Recipient. I certify that the requirements of the ActewAGL Electrical Safety Rules have been carried out and the isolation and operational earthing is as shown above. Issuer Name: Signed: Date: Time: Receipt of Access Authority: I hereby acknowledge by receiving this Access Authority that I fully understand my duties and the requirements of the ActewAGL Electrical Safety Rules. I am aware of the nature and position of the apparatus and conductors covered by this Access Authority. I fully understand that all apparatus and conductors other than those referred to above are to be treated as energised. I am satisfied that I, the persons under my control and those authorised by me to work on the apparatus referred to shall be kept clear of all other energised apparatus and conductors during the course of the work. Authorised Recipient Name: Signed: Date: Time: Telephone (mobile): CCA0511/07 ActewAGL House 40 Bunda Street Canberra ACT 2600 I GPO Box 366 Canberra ACT 2601 t I f I actewagl.com.au Yellow Copy: Access Authority (perforated) ActewAGL Distribution ABN a partnership of Jemena Networks (ACT) Pty Ltd ABN and Icon Distribution Investments Limited ABN White copy: Electrical Operator s Figure 7.4 Blank Access Authority form as an Electrical Access Permit or Sanction for Testing or Permit to Work 72 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

87 SECTION 7 Issue of access authorities Working earths and low voltage bonding located at: Time Removed Sign Onto the Access Authority: I hereby acknowledge having received instructions from the Authorised Recipient to carry out work on the apparatus and conductors referred to in this Access Authority and I am satisfied that I shall keep clear of any other energised apparatus or conductors in the course of the work. Sign Off the Access Authority: I hereby acknowledge having received instruction from the Authorised Recipient to discontinue work on the apparatus and conductors referred to in this Access Authority and now regard them as energised. Name Signature Date Time Signature Date Time EXAMPLE Transfer of Access Authority I hereby state that I have read and understood this Access Authority and I am taking responsibility as the Authorised Recipient from the time of transfer as shown below Access Authority Type (mark type with x) Electrical Access Permit Sanction for Testing From (name): To (name): Signature Date Time Signature Date Time 7 System Control notified: Relinquishment of the Access Authority I hereby state that all persons authorised by me to work under this Access Authority are now clear of the apparatus and conductors and all working earths and LV bonding have been removed. I hereby relinquish the Access Authority and now acknowledge that the apparatus and conductors must be treated as energised as per the ActewAGL Electrical Safety Rules. If NO, state condition & advise the Electrical Operator/System Control: Are the apparatus and conductors serviceable (circle) & safe to re-energise? YES / NO Authorised Recipient Name: Signature Date Time Cancellation of the Access Authority with System Control Electrical Operator Name: Signature Date Time CCA0511/07 ActewAGL House 40 Bunda Street Canberra ACT 2600 I GPO Box 366 Canberra ACT 2601 t I f I actewagl.com.au ActewAGL Distribution ABN a partnership of Jemena Networks (ACT) Pty Ltd ABN and Icon Distribution Investments Limited ABN SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

88 SECTION 7 Issue of access authorities This page left intentionally blank 7 74 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

89 8Section DANGER Access for work on or near high voltage electrical apparatus PRINCIPLE All high voltage (HV) electrical apparatus shall be regarded as live until: 1. isolated, tested and proved de-energised, earthed and short circuited; and 2. an appropriate safe access system has been applied to allow work to be carried out on or near the HV electrical apparatus; and 3. job risk assessments are completed for the types of work to be carried out on or near the HV electrical apparatus.

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91 SECTION 8 Access for work on or near high voltage electrical apparatus 8.1 General No worker shall touch the HV conductors of any electrical apparatus unless: a. the worker has been acknowledged as an authorised recipient of an electrical access authority or has signed onto an access authority covering that electrical apparatus and the HV conductors have been discharged and/or earthed at the work site, and the electrical access authority is available for reference at the site of the work; or b. the worker is a recipient of an electrical access authority covering the conductors of a HV cable and the de-energised state of the cable at the work site is confirmed in accordance with Clause 7.8 Working on insulated network, service or supervisory cables (SCADA), and the electrical access authority is available for reference at the site of the work; or c. in the case of a rackable circuit breaker or rackable voltage transformer, the electrical apparatus is removed from its rack or cubicle position and placed in a designated maintenance position; or d. the worker is working under the terms of a sanction for testing on that electrical apparatus; or e. that electrical apparatus has been declared out of commission in accordance with Clause 7.5 Electrical apparatus out of commission; or f. the worker is performing glove and barrier live-line work in accordance with procedures (refer Appendix A). 8 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

92 SECTION 8 Access for work on or near high voltage electrical apparatus Access for work on high voltage electrical apparatus Electrical operator Recipient 1. Isolate and test Section 5 Operation of electrical apparatus 8.6 Preparing high voltage (HV) electrical apparatus 4. Perform job risk assessment 4.1 Hazard identification, risk assessment and control 5. Receive electrical access authority and workers sign on Section 7 Issue of access authorities 7.2 Electrical access permit 7.3 Sanction for test 7.4 Permit to work 8 2. Install operational earths Section 6 Earthing of high voltage (HV) electrical apparatus 6.3 Earthing for access to high voltage (HV) electrical apparatus 6. For work on CABLES: positively identify or visually trace or spike 7.8 Working on insulated network, service or supervisory cables 6.4 Removal of earth when working under an electrical access authority Spiking of cables 3. Issue electrical access authority 6.8 Equipotential bonding Section 7 Issue of access authorities 7.2 Electrical access permit 7. Install working earths Section 6 Earthing of high voltage (HV) electrical apparatus 6.5 Working earths 6.8 Equipotential bonding 7.3 Sanction for test 7.4 Permit to work 7.7 Barriers and signs Barriers and signs for electrical access authorities 8. Complete work/task Section 10 Testing, commissioning, and de-commissioning of electrical apparatus Continued on p77 Chart 8.1 General workflow for high voltage (HV) access 76 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

93 SECTION 8 Access for work on or near high voltage electrical apparatus Access for work on high voltage electrical apparatus Electrical operator Recipient Continued from p76 9. Remove working earths. Section 6 Earthing of high voltage (HV) electrical apparatus 6.4 Removal of earth when working under an electrical access authority 10. Workers sign off electrical access authority Section 7 Issue of access authorities , and Relinquishment and cancellation of an electrical access authority Cancel electrical access authority & & Responsibilities when cancelling an electrical access authority 11. Relinquish electrical access authority Section 7 Issue of access authorities , and Responsibilities of the recipient when relinquishing an electrical access authority 13. All earths confirmed removed Section 6 Earthing of high voltage electrical apparatus Section 8 Access for work or near high voltage electrical apparatus 14 Restore network Section 5 Operation of electrical apparatus End SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

94 SECTION 8 Access for work on or near high voltage electrical apparatus 8.2 Live work high voltage (HV) General Clause 7.5 Electrical apparatus out of commission, is not applicable to the operation, washing or testing of live HV electrical apparatus. Live work should only be undertaken after first performing a switching needs assessment to determine whether the work should be done under isolated and earthed conditions or whether the work can be performed under energised conditions by appropriately trained, skilled and authorised workers. The safe approach distances for glove and barrier workers are shown in Table 8.1 Safe approach distance (mm) to live conductors for authorised glove and barrier workers. Before live work is undertaken a risk assessment shall confirm that the work can be performed safely. Work on or near exposed live HV conductors shall be performed by an authorised glove and barrier worker using approved methods as detailed in Clause Live high voltage work methods and in accordance with procedures (refer Appendix A). A written application using the System Switching Request (SSR) form shall be completed for all prearranged live line access requirements. All such applications shall be submitted to System Control Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

95 SECTION 8 Access for work on or near high voltage electrical apparatus Table 8.1 Safe approach distance (mm) to live conductors for authorised glove and barrier workers 11kV 33kV Stick Glove and barrier Live line worker 400 Contact wearing gloves and sleeves Live line EWP insulated section 400 Contact with covers Live line EWP and mobile plant un-insulated section (to uninsulated conductor) Live line EWP and mobile plant un-insulated section (to insulated conductor) Mobile plant load (for example pole) double insulated where the load is insulated and the conductors are insulated Inadvertent contact Insulated lifting equipment (insulated to twice the voltage) Contact Inadvertent contact Un-insulated lifting equipment (to insulated conductor) Un-insulated lifting equipment (to uninsulated conductor) Phase-to-phase distance (distance to be maintained between phases when moving conductors) Tool insulation distance (hand sticks) 450 Contact Notes: 1. When using an insulated elevating work platform (EWP) or insulated platform between circuits: a minimum of 250mm clearance shall be maintained between the basket of the EWP and the lower circuit, this includes aerial earths, catenary cable, pay television and any other conductive mediums; or when insulating barriers rated for the higher voltage are fitted to the lower circuit contact can be made with the covers. 2. If EWPs are utilised for live HV work: when one EWP is used only one phase at a time may be worked; or when two EWPs are used two phases may be worked simultaneously provided a minimum separation of 2m between the baskets and the booms of the EWPs is maintained; or when two EWPs are used on the same phase the minimum separation of 2m is not required; or no tools or equipment shall be passed between one basket and the other while working in this close proximity. Care shall be taken to ensure that the work of one person does not compromise the clearance for isolation of another. 3. Mobile plant being used shall be operated under the direction of an authorised live line worker. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

96 SECTION 8 Access for work on or near high voltage electrical apparatus Glove and barrier and/or stick work and access authority Glove and barrier and/or stick work and work under an access authority shall not be performed concurrently on a structure. If it is necessary to change between glove and barrier and/or stick work and to work under an access authority, a clear transition point shall exist. All workers shall be aware that the change process is occurring and act accordingly. At all times access authority isolations shall remain unchanged. No glove and barrier and/or stick work shall be carried out concurrently at over/under crossings of apparatus under access authority as the gap between the over/under crossing could be compromised Minimum Requirements for Live Line Work The minimum requirements for undertaking live line work shall include: 8 a. the workers performing live line work, and the appointed safety observers, shall be authorised Glove and Barrier workers; and b. the appointment of a safety observer where their sole duty shall be to observe the work being undertaken; and c. that the workers performing live line work shall wear and use appropriate rated and tested devices and PPE; and d. the work shall be performed in accordance with procedures (refer Appendix A). When undertaking live line work, the job risk assessment shall consider as a minimum; a. the condition of the electrical apparatus, for example the soundness of structures/conductors on either side of the structure to be worked on or the integrity of the insulators; and b. proximity of other electrical apparatus, for example potential second points of contact and drop zone considerations; and c. proximity of earthed equipment and structures; and d. protection and control settings, for example auto reclose suppression; and e. work environment, for examples heat, light or weather conditions; and f. estimated conductor weights and loadings, both electrical and mechanical; and g. working from multiple elevating work platforms (EWP) Live high voltage (HV) work methods High voltage (HV) live-line (hot stick) work An authorised glove and barrier and/or stick worker may access live HV conductors using insulating sticks at the safe approach distances as shown in Table 8.1 Safe approach distance (mm) to live conductors for authorised glove and barrier workers Glove and barrier live-line work An authorised glove and barrier and/or stick worker may make insulated contact with a live HV conductor up to and including 33kV when fully insulated from earth and other phases using approved and tested personal protective equipment and insulating devices. Glove and barrier work shall never be performed directly from a structure. 80 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

97 SECTION 8 Access for work on or near high voltage electrical apparatus 8.3 Use and testing of operating and live-line equipment All sticks, gloves, sleeves, mats, protective barriers or covers, earthing devices, insulating platforms, insulated elevating work platforms or other equipment used for operating HV electrical apparatus or performing live-line work shall be specifically approved for the particular application. Test intervals should not exceed 12 months. More frequent testing may be required depending on usage and the work environment. Equipment shall be marked to show the date of the next routine test. Equipment shall not be used after the marked test date until retested. Gloves, sleeves, mats and protective barriers or covers used for operating HV electrical apparatus or for performing glove and barrier work shall not be relied upon as the sole means of insulation. There shall be at all times two forms of insulation. 8.4 Insulated sticks Insulated sticks need not have a handle. Insulated sticks shall have a length which provides appropriate insulation from live parts and enables the worker using the stick to maintain the applicable safe approach distance at all times. (For HV refer to Clause 8.2 Live work high voltage (HV) and Table 8.1 Safe approach distance - glove and barrier). The live line stick shall have a minimum of 3 extensions when used for voltages of 66kV or 132kV Work on or near de-energised high voltage (HV) electrical apparatus Before work on or near de-energised HV electrical apparatus can begin, an electrical operator shall have carried out all of the following in accordance with procedures: a. clearly identified the HV electrical apparatus; and b. isolated the electrical apparatus from all possible sources of supply; and c. secured the isolation to prevent unauthorised operation by applying danger tags to all points of isolation and applying approved locking devices if there is provision; and d. proved de-energised the electrical apparatus if test equipment is used it shall be proved to be in good working order immediately before and after use; and e. install or directly supervise the installation of the operational earths and short circuited the electrical apparatus; and f. clearly identified the safe area for work; and g. issued an electrical access authority. Danger tags, which have been installed by the electrical operator, shall only be removed by an electrical operator under direction from System Control. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

98 SECTION 8 Access for work on or near high voltage electrical apparatus 8.6 Preparing high voltage (HV) electrical apparatus for access Isolation and earthing general HV electrical apparatus should not be regarded as being safe for the issue of an access authority until it has been isolated and operational earths applied. Isolation points shall be identified and danger tagged and secured where possible by locks as described in procedures. Consideration shall be given to the isolation of sources of supply from LV or secondary circuits including generation sources (for example voltage transformers, transformer back-feeds, motor generator sets, photovoltaic cells, lightning and induction). Precautions such as isolating a source of supply through an open link switch or fuse link and applying a danger tag shall be considered acceptable if application of bonders is not practicable or safe to do so. For remote controlled electrical apparatus, workers shall satisfy themselves that the remote/local switch is in the local position, or that the remote control has been made inoperative by other approved means, before starting work on the electrical apparatus. As appropriate remote-switching points should be danger tagged and/or SCADA tagged. These include the System Control SCADA system and zone substation mimic panels. 8 Isolation for access shall either be visible, or an approved test made to confirm that the electrical apparatus is de-energised. Such isolation may not eliminate the effects of electrical or magnetic induction. Earths shall be applied as described in Clause 6.3 Earthing for access to high voltage (HV) electrical apparatus Isolation of high voltage (HV) electrical apparatus for access General Procedures for preparing access to HV electrical apparatus connected to substations with interconnected LV shall be based on the following concepts: a. where a substation is connected to HV electrical apparatus being made isolated and at earth potential for access and the LV reticulation from that substation is capable of being energised by direct switching or bridge connections, that LV reticulation or substation transformer shall be considered as a source of supply ; and b. isolation of such LV reticulation or transformer is part of the access procedure and each isolation shall be danger tagged and recorded on the access authority; and c. two or more isolations in series do not remove the need for earthing or bonding. d. bonding of conductors on the LV side of a substation is an acceptable option otherwise other appropriate precautions need to be taken; and e. if bonding is not practicable then other acceptable precautions are having an open link, switch or fuse link and a danger tag applied. 82 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

99 SECTION 8 Access for work on or near high voltage electrical apparatus Embedded generation In order to protect workers against inadvertent back feed from embedded generating units or alternative sources of energy such as photovoltaic cells, the following factors shall be considered whilst planning for and preparing electrical apparatus for access: a. the danger of activation of both HV and LV assets from temporarily connected motor-generator sets or alternative sources of energy such as photovoltaic cells; or b. embedded generating units may be connected at any time and at any place during the progress of work; or c. the impracticability of isolation to completely eliminate such a risk; or d. the application of earths, short circuits and bonds, as appropriate on all sides of the work location will minimise the effect of inadvertent back feeding. Typical examples given in this clause might not cover all possible sources of supply such as back feeds. Note: Only approved means of bonding is to be used where practicable and isolation of micro photovoltaic cell (Class 1) installations is not required outside of the bonded work site Isolation by non-withdrawable switch Where the only means of isolating HV electrical apparatus from a source of supply is by a switch, which cannot be withdrawn and in which the actual disconnection is not visible, the isolation shall be regarded as satisfactory for the purpose of carrying out work provided that the switch position indicator shows that the switch is in the earthed position and the switch is locked manually. Only an electrical operator shall remove the locking device. 8 If the switch is a gas switch that does not have an earth position and cannot be locked in the open position, the isolation shall be regarded as satisfactory for the purpose of carrying out work provided that the switch position indicator shows that the switch is open and a set of operational earths is installed immediately adjacent to the switch. A switch that uses a vacuum interrupter alone is not an acceptable form of isolation. Where the switch has a local/remote function then the remote function shall be disabled in accordance with Clause Isolation and earthing general Isolation for test purposes Isolation of HV electrical apparatus by making the break in the circuit under oil, SF 6 gas, vacuum or air is not suitable for the application of HV for test purposes or for insulation resistance testing (> 2500 V). Nor is it a satisfactory form of isolation if work is to be carried out with the earth and short circuit removed at this point of isolation. A second break in the electrical circuit, in different switching chamber, is required. This is commonly referred to as a double break. The double break is required in separate switchgear units. Where isolation of HV electrical apparatus is to be provided for the application of HV for test purposes, and such isolation requires the removal of switchgear panels to enable the connection of test leads to the circuit to be tested, there shall be an earthed metal screen or barrier between the test circuit and any energised busbars within that switchgear. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

100 SECTION 8 Access for work on or near high voltage electrical apparatus Isolation for cable termination work Where cable termination work is to be performed on HV electrical apparatus, which requires the removal of cable box panels, there shall be an earthed metal screen or barrier between the cable circuit terminals and any energised busbars within that switchgear Apparatus without an earthed metal sheath HV electrical apparatus which has been insulated with tape, rubber, plastic or other insulation, but has not been covered with an earthed metal sheath or screen is not effectively insulated and shall be treated as exposed. There are some exceptions. Magnefix MD4 switchgear (Hazemeyer) and cable terminations covered with approved (manufacturer supplied terminations) screens are considered to be effectively shielded High voltage (HV) metal clad switchgear and associated electrical apparatus For the purpose of issuing an access authority, a circuit breaker or a voltage transformer may be regarded as isolated and at earth potential when it is racked out and appropriate precautions taken to prevent re energisation (refer Clause 8.1 Access for work on or near high voltage (HV) electrical apparatus). 8 For work on busbar circuits, where the physical separation of circuits within a chamber is not visibly evident, additional precautions shall be taken for the safety of the workers. The proposed means of access within metal clad chambers shall be described to the electrical operator by the recipient and both shall agree on the extent of access and that such access is safe. When access is required within spout bushings the contacts shall be confirmed as de-energised by an approved test. The circuit shall also be earthed elsewhere or other precautions taken to ensure that the spout contacts cannot become live by induction or other means. When it is not practicable to earth metal-clad circuits a risk assessment shall be conducted to determine the special precautions, including discharging, to ensure that the conductors can be regarded as isolated and earthed. The isolation and identification of the unearthed circuit shall be checked by more than one electrical operator. 8.7 Suppression of auto-reclose on HV overhead feeders The auto-reclose function on HV overhead feeders shall be suppressed: a. when any HV switching operations are in progress; or b. on total fire ban days; or c. when glove and barrier and/or stick electrical workers are carrying out work on energised HV electrical apparatus and/or conductors; or d. when authorised tree surgeons are cutting vegetation in the vicinity of energised HV overhead electrical apparatus and/or conductors in accordance with Clause Safe approach distancevegetation clearing general. 84 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

101 9Section Access to low voltage electrical apparatus PRINCIPLE All low voltage (LV) electrical apparatus shall be regarded as live until: 1. isolated, tested and proved de-energised; and 2. appropriate safe procedures of work are established for work on the LV electrical apparatus; and 3. job risk assessments are completed for the types of work to be carried out on or near the LV electrical apparatus.

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103 SECTION 9 Access to low voltage electrical apparatus 9.1 General Workers required to work on or near LV electrical apparatus shall be appropriately trained and authorised as detailed in Clause 3.6 Authority to work on live low voltage (LV) electrical apparatus, and Clause 3.13 Perform rescue. System Control should be informed of all work intended on the LV electricity network both energised and de-energised. Prior to a LV switching operation the available information regarding circuit conditions shall be taken into account and no electrical apparatus shall be operated if it is inappropriate for the duty to be performed. After switching, correct operation of the electrical apparatus should be confirmed whenever possible. All conductors shall be assumed to be live until tested by the worker who is conducting the work, to prove that they are not live before contact is made with them. (This includes new conductors which have apparently never been live). Network and service cables that have a fault identified are to be de-energised and danger tagged until repaired. 9.2 Temporary supply of electricity All connections to obtain temporary LV supply shall be made only through approved devices issued for the purpose. 9 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

104 SECTION 9 Access to low voltage electrical apparatus Access for work on low voltage electrical apparatus Electrical operator Recipient 1. Isolate 9.3 Work on or near live low voltage (LV) conductors 4. Perform job risk assessment 4.1 Hazard identification, risk assessment and control 2. Test and prove de-energised 9.5 Work on de-energised low voltage (LV) electrical apparatus Preparation of apparatus for access to electricity networks 5. Receive electrical access authority Section 7 Issue of access authorities 7.2 Electrical access authority 7.3 Sanction for test 7.4 Permit to work 9 3. Issue electrical access authority Section 7 Issue of access authorities 7.2 Electrical access authorities 7.3 Sanction for test 6. For work on CABLES: Positively identify or visually trace or spike 7.8 Working on insulated network, service or supervisory cables Spiking of cables 7.4 Permit to work 7.7 Barriers and signs Barriers and signs for electrical access authorities 7. Install LV bonders Bonding 8. Complete work/task Section 10 Testing, commissioning and decommissioning electrical apparatus 9. Remove LV bonders Bonding Continued on p87 Chart 9.1 General workflow for low voltage (LV) access 86 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

105 SECTION 9 Access to low voltage electrical apparatus Access for work on low voltage electrical apparatus Electrical operator Recipient Continued from p Workers sign off electrical access authority Section 7 Issue of access authorities & & Relinquishment and cancellation of an electrical access authority 12. Cancel electrical access authority Section 7 Issue of access authorities Section 9 Access for work on or near low voltage (LV) electrical apparatus 11. Relinquish electrical access authority Section 7 Issue of access authorities & & Responsibilities of the recipient when relinquishing an electrical access authority All earths and bonds removed & & Responsibilities when cancelling an electrical access authority 14. Restore network Section 9 Access for work on or near low voltage (LV) electrical apparatus End SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

106 SECTION 9 Access to low voltage electrical apparatus 9.3 Work on or near live low voltage (LV) conductors General When work is to be carried out on or near live LV electrical apparatus, approved precautions or live working techniques shall be taken to prevent simultaneous contact with conductors or conducting objects at different potential unless the conductors are de-energised. Live work should only be undertaken after first performing a switching needs assessment to determine whether the work should be done under isolated conditions or whether the work can be performed under energised conditions by appropriately trained, skilled and authorised workers in accordance with procedures (refer Appendix A). Before working on or near live LV conductors, a risk assessment shall be conducted to assist in the identification and control of hazards to ensure that the work can be performed safely. The risk assessment shall consider as a minimum: 9 a. the condition of the electrical apparatus, for example the soundness of structures, conductors and insulators; and b. proximity of other electrical apparatus, for example potential second points of contact; and c. proximity of earthed equipment and structures including communications cables/catenary, equipment and carriers, pillars and pits, public lighting and fittings; and d. work environment for example heat, light, weather conditions; and e. use of appropriately rated apparel and equipment; and f. the use of insulated barriers, mats and covers. When insulating gloves are required, they shall be worn on both hands with mechanical protection (outer gloves) and visually inspected prior to each use to ensure the integrity of the glove, for example checking for small holes that compromise the integrity of the glove and such the safety of the worker. In wet weather conditions leakage currents may flow in equipment and structures supporting live LV circuits. Insulating gloves and other suitable personal protective clothing shall be used when working on, or within reach, of such equipment and structures. Each worker shall ensure that they are aware of the: a. requirements of the work instruction; and b. work to be done by the workers; and c. work they are to perform; and d. PPE, tools and equipment; and e. precautions to be taken; and f. work method/s to be used. A safety observer shall be used when a worker is working on or near live exposed LV electrical apparatus in accordance with Clause 4.9 Use of safety observers. For exceptions to this refer to Clause 4.10 Working alone or without a safety observer. 88 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

107 SECTION 9 Access to low voltage electrical apparatus Insulation/covering of conductive and earthed structures All conductive and earthed structures/objects within reach, including exposed conductors (except the conductor being worked on), shall be shielded by approved covers. Conductive and earthed structures/objects include: a. conductive poles for example concrete, steel and stobie poles; and b. installed earthing metal components on wooden poles; and c. stays, operating pipes, earthing down leads; and d. catenary wires of communications cables; and e. streetlight conductors and switch circuits, streetlight fittings and brackets; and f. fittings in mini-pillars/link-pillars or underground pillars and pits. Actions to be considered are: a. without requiring a deliberate movement or over reach; or b. by accident; or c. while changing position; or d. while making movements in the ordinary course of work; or e. while fastening or unfastening a body belt/harness. Approved covers include electrical worker s rubber mats and other tested insulating devices. Covers shall be used liberally, secured in place and repositioned as necessary throughout the job. When workers need to pass between live LV conductors spaced less than 1200mm apart, the conductors shall be insulated (either permanently or temporarily) whenever they are in reach. Where it is very difficult to cover any conductor or conducting object (for example in mini-pillars, link-pillars, underground pillars or pits), the person in control of the work may decide that it is impracticable. In this case, special precautions shall be taken to prevent contact with the conductor or object by the use of barriers or with deliberately restrained movements. 9 LV electrical apparatus covered by tape, rubber, plastic or fabric, including cables and service wires exposed to ultra violet (UV) deterioration, shall be regarded as exposed conductor. 9.4 Notification of work on de-energised low voltage (LV) electrical apparatus Before making an application for planned LV access the person in control of the work shall establish that the proposed work has been properly planned and can be carried out safely. Consideration shall be given to: a. work method; and b. work environment; and c. the skills and authorisations of the workers; and d. how to energise and test after completion of work. The electrical apparatus to be covered and its location shall be accurately defined, and the work to be undertaken adequately described. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

108 SECTION 9 Access to low voltage electrical apparatus 9.5 Work on de-energised low voltage (LV) electrical apparatus General Where work is to be done on LV electrical apparatus under de-energised conditions an Electrical Access Authority shall be issued. All LV Service Conductors less than or equal to 50mm 2 and not requiring isolation of LV Mains, shall be excluded from the requirement for an Electrical Access Authority. Refer to Clause Access to Services. Notification of work should still be required to System Control prior and at completion of work. When connecting de-energised electrical apparatus, including connection to customers services, to a live LV source of supply, the final connections to be made shall be to the source of supply. When disconnection is being made, the connections at the source of supply shall be disconnected first. The neutral conductor shall be connected first and disconnected last. All LV uninsulated conductors and electrical apparatus shall be regarded as live until isolated, tested and proved de-energised by electrical workers using approved testing devices before commencement of work. LV bonders shall be applied where practicable by the recipient or by authorised workers under their supervision in accordance with Clause Low voltage (LV) bonding Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

109 SECTION 9 Access to low voltage electrical apparatus Network boundary 9 High voltage (HV) network An electrical access authority shall be issued when working on or near de-energised LV electrical apparatus. Exclusion: All LV service conductors less than or equal to 50mm 2 and not requiring isolation of LV mains shall be excluded from the requirements for an electrical access authority. Distribution substation Network boundary Low voltage (LV) network 50mm 2 or less overhead service Electrical access authority not required 50mm 2 or less underground service Larger (greater than 50mm 2 ) service Electrical access authority required Low voltage (LV) mains Pole mounted protection Tee d service Underground Overhead service service 50mm 2 service with no fuse, isolation of LV mains required, electrical access authority required. Figure 9.1 Low voltage (LV) network topography and permit requirements SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

110 SECTION 9 Access to low voltage electrical apparatus Access for work on services Check location and work task to be performed Section 9 Access to low voltage (LV) electrical apparatus Is service less than or equal to 50mm 2? Yes No An electrical access authority is required. Submit a system switching request and perform as per LV access procedure Go to LV access process 9.5 Work on deenergised low voltage electrical apparatus Is isolation of LV mains required? Yes No 9 Perform job risk assessment. Call System Control (Dispatch) Isolate and danger tag 4.1 Hazard identification, risk assessment and control 9 Access to low voltage (LV) electrical apparatus 10.1 Correct supply, polarity and rotation Access to services 4.17 Danger tags For work on cables use a signal generator, or use cable ID procedure Access to services 7.8 Working on insulated network, service or supervisory cables Perform work task Preparation of apparatus for access to electricity networks Restore 10.1 Correct supply polarity and rotation 10.6 Procedure prior to making apparatus live for service Notify system control job complete End Chart 9.2 General workflow for service access 92 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

111 SECTION 9 Access to low voltage electrical apparatus Access to services Where work is to be performed on services and an electrical access authority is not required, the point of isolation shall be danger tagged or appropriately flagged. Service cable identification may be performed by use of a signal generator or other approved test as described in Clause 7.8 Working on insulated power, service or supervisory cables (SCADA) Preparation of Apparatus for Access to Electricity Networks Before work on or near de-energised LV electrical apparatus can begin, an electrical operator shall have carried out all of the following in accordance with procedures: a. clearly identified the LV electrical apparatus; and b. isolated the electrical apparatus from all possible sources of supply, including embedded generating units and customer power factor correction capacitors. Isolation of micro photo voltaic cells (Class 1) installations is not required outside of the bonded work site; and c. secured the isolation to prevent unauthorised operation by applying danger tags to all points of isolation and applying approved locking devices where practicable; and d. tested and proved that the electrical apparatus is de-energised; and e. clearly identified the safe work area using appropriate barriers and/or signs (refer Clause 7.7 Barriers and Signs); and f. issued an electrical access authority. Danger tags, which have been installed by an Electrical Operator, shall only be removed by an Electrical Operator under direction from System Control. The procedure for Access Authorities for work or testing on LV electrical apparatus shall be as detailed in Clause 7.2 Electrical Access Permit and Clause 7.3 Sanction for Testing. 9 The principles outlined in Clause 7.5 Electrical Apparatus Out of Commission, and Clause 7.7 Barriers and Signs also apply to LV work. Electrical apparatus shall be tested and proved de-energised by means of an approved testing device. The test equipment shall be proved to be in good working order immediately before and after use. When newly constructed conductors reach a state whereby they are electrically connected, access to those conductors shall only be under an Electrical Access Permit or applying approved live LV procedures (refer Appendix A). De-energised LV cables shall be identified at the work site and proved de-energised in accordance with procedures. Refer to Clause 7.8 Working on insulated power, service or supervisory cables (SCADA). Precautions against induced and transfer voltages shall be in accordance with Clause Working under induced voltage and transfer voltage conditions Low voltage (LV) bonding Consideration shall be given to protection from other sources of supply such as embedded generating units, photovoltaic cells, lightning, induction etc. Where practicable, the application of bonders at the work site will minimise the effect of inadvertent energisation from alternative energy sources. Only approved means of bonding shall be used in accordance with procedures (refer Appendix A). Also refer to Clause 6.8 Equipotential bonding. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

112 SECTION 9 Access to low voltage electrical apparatus Before a worker makes contact with bare conductors of the electricity network, which have been isolated for the purpose of facilitating work under de-energised conditions, they shall complete a safe to touch test and where practicable, the conductors (all phases plus neutral) shall first be bonded at the work site in accordance with approved procedures (refer Appendix A). Where practicable, the bonders should be applied as part of the access authority. Either the electrical operator or the workers can apply the initial bond. The recipient of the access authority shall ensure that all bonders are removed before relinquishment of the access authority in accordance with procedures (refer Appendix A). If bonding is impracticable the risk shall be assessed, and other precautions as having an open link switch or fuse link, applying a danger tag as well as testing shall be taken as necessary. The recipient shall advise the authorised workers of the absence of bonders and any precautions taken shall be documented on the electrical access authority and risk assessment. 9 due Isolated to fault Bill Op erat / 123 or / Figure 9.2 Examples of LV earthing or bonding 94 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

113 10 Section Testing, commissioning and decommissioning electrical apparatus PRINCIPLE Electrical apparatus shall not be placed into service until it has been cleared for service.

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115 SECTION 10 Testing, commissioning and decommissioning electrical apparatus 10.1 Correct supply, polarity, and rotation Before an installation neutral is connected to the electricity network supply neutral, both shall be identified and confirmed by test. Electrical apparatus and/or conductors shall be visually identified before connections to the supply system are made. Service polarity, phase rotation and neutral continuity testing shall be carried out in accordance with prescribed procedures (refer Appendix A), to ensure that the conductors have been correctly identified and connected. The hazards of a transposed active and neutral supply connection (for example reversed polarity) and/ or a high impedance supply neutral will cause the installation neutral and earthing system, including earthed metal parts of equipment to become energised Use of testing devices Tong or clip-on testing devices Tong or clip-on testing devices are generally used on LV conductors. Specially designed tong testing devices provided for the purpose may be used on exposed HV electrical apparatus. In either case a worker shall not use tong or clip-on testing devices unless they have been instructed in the precautions which shall be observed in their use. If possible the testing devices shall be applied to the conductors where insulated parts exist rather than to an exposed part of the conductor. In particular the worker shall: a. not regard the insulation on the handles of the testing device as sufficient protection, and other precautions, such as the use of insulating gloves and/or mats as applicable, shall be taken where it is necessary to apply the testing device to an exposed conductor; and b. when the testing device is applied to an exposed conductor, take care to prevent the testing device from making contact with other exposed conductors or conducting materials. Suitable insulating screens shall be used where necessary Application of test voltages Voltage less than 2500V Services Application of test voltages on services can be conducted without an access authority on condition that the worker shall neither use insulation resistance testing on, nor apply low voltages for test purposes to, any electrical apparatus unless they have warned all workers working on the electrical apparatus of the proposed test. They shall have received assurances that everyone will stand clear of such electrical apparatus during the test. On completion of the test the electrical apparatus shall be discharged. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

116 SECTION 10 Testing, commissioning and decommissioning electrical apparatus Electricity network Application of test voltages on electrical apparatus shall require an electrical access permit unless the apparatus is out of commission. A recipient of the electrical access permit shall neither use insulation resistance testing on, nor apply low voltages for test purposes to, any electrical apparatus unless they have warned all workers working on the electrical apparatus of the proposed test. They shall have received assurances that everyone will stand clear of such electrical apparatus during the test. On completion of the test the electrical apparatus shall be discharged Voltage greater than 2500V Electricity network and services Application of test voltages >2500V shall require a sanction for testing authority unless the apparatus is out of commission or the service conductors are less than or equal to 50mm 2 and not requiring isolation of LV mains (refer to Clause 9.5 Work on de-energised low voltage (LV) electrical apparatus). The tester in charge of test voltages >2500V shall have staff stand-by at any part of the electrical apparatus that is exposed, and shall have warning notices displayed where such electrical apparatus could be exposed. They shall have received assurances that everyone will stand clear of such electrical apparatus during the test. On completion of the test the electrical apparatus shall be discharged and earthed. Isolation for tests >2500V including cable fault location and insulation resistance testing shall not be regarded as satisfactory in reliance upon a single break under oil, air, gas or vacuum (refer to Clause Isolation for test purposes). 10 Note: Application of test voltages on electrical apparatus not electrically connected to the electricity network, for example in a workshop or a yard environment, can be completed without an access authority but the person in control shall ensure that barriers are installed, warning notices are displayed and shall have received assurances that everyone will stand clear of such electrical apparatus during the test and on completion the electrical apparatus is discharged Clearance for service System Control shall not consider new or changed electrical apparatus, or electrical apparatus previously out of commission, as being available for service until it has been handed over from the constructing or maintaining authority by written notification or by other appropriate procedure. The appropriate notification to System Control shall be by means of the Electrical Network Alteration Advice (ENAA) form. In cases of electrical apparatus replacing like apparatus at the same location, the appropriate procedure for handing over from the constructing or maintaining authority shall include oral advice to System Control. Associated with advice to System Control shall be the completion of, and reporting on, approved pre-activation, pre-service tests and commissioning tests. 96 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

117 SECTION 10 Testing, commissioning and decommissioning electrical apparatus 10.4 Connections to electrical apparatus Before any electrical connection is made whereby new electrical apparatus, any changed electrical apparatus, or any electrical apparatus previously out of commission can be made live, either by direct switching or by energising other electrical apparatus, the person in control of the work shall: a. notify System Control of the intention to make such connection; and b. warn all workers associated with the work, and any others likely to be affected, that no further work on the electrical apparatus is permitted unless they are signed onto an electrical access permit or a sanction for testing covering the electrical apparatus; and c. arrange for the issue of an electrical access permit or sanction for testing on the appropriate electrical apparatus to enable the connection to be made Work on pilot cables Workers working on pilot cables shall be insulated to 15kV isolation from the local earth, within zone substations. Cable repair work of pilot cables shall proceed treating them as live LV until all cores being worked on are proved de-energised at the work site. Precautions against induced and transfer voltages shall be in accordance with Clause Working under induced voltage and transfer voltage conditions Prior to making apparatus live for service Before making any electrical apparatus live, System Control through the electrical operator or submitted documentation shall ensure that: a. in case of new electrical apparatus, all the necessary Electrical Network Alteration Advice forms are in the possession of System Control and the electrical operator; and b. any electrical access authority, or other document restricting the electrical apparatus to a deenergised state have been cancelled; and c. the results of any pre-activation tests required to be carried out on the electrical apparatus (for example earth test, insulation resistance test, rotation/phasing) are satisfactory and recorded; and d. all new cables, or cables associated with fault conditions, or cables out of service for more than one week shall be insulation resistance tested prior to energisation in accordance with procedures (refer Appendix A); and e. all new or repaired HV cables between the zone substation and the first switching point shall be HV tested prior to energisation; and f. all earths are removed; and g. a visual inspection shows that to all appearance the electrical apparatus is ready for service; and h. the labelling and numbering of all the electrical apparatus to be energised has been completed; and 10 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

118 SECTION 10 Testing, commissioning and decommissioning electrical apparatus i. the network configuration (for example HV feeder circuits, substation transformers, LV circuits) are isolated to prevent unintentional energisation of electrical apparatus and switching points are open to allow progressive and stage energisation of circuits (for example not to energise an entire suburb development with one operation); and j. warning live signs are attached to electrical apparatus where appropriate; and k. backfilling or appropriate fencing with a minimum of sand covering of cable joints is completed prior to energisation. Table 10.1 Insulation Resistance Values 8 Conductor type Old MΩ 1 New MΩ Test Voltage Time Who Customer Installation NA Licensed electrician Consumer Mains NA Licensed electrician LV OH Service NA Electrical worker 4 LV UG Service NA Electrical worker 4 LV Control Cabling² NA System fitter 4 LV Switchgear s System fitter 4 LV OH Mains s System fitter 4 LV UG Mains s System fitter 4 Tx (LV to HV + E)³ s System fitter 4 Tx (Primary + Secondary)³ s System fitter 4 Tx (HV to LV + E)³ s System fitter 4 10 Pilot Cable s System fitter 4 11kV Switchgear s System fitter 4 11kV Cables s System fitter 4 11kV Busbar s System fitter 4 Fault location and other tests System fitter 5 6 Notes: 1. If the cable is unable to be traced in its entirety then the lower value can be used, with the exception of new cable installations. 2. Minimum cable diameter > 1.5mm. 3. Distribution transformers. 4. Suitably authorised, trained, equipped and electrically qualified. 5. Authorised tester, suitably trained, equipped and electrically qualified. 6. Protection technician. 7. In accordance with approved procedures (refer Appendix A). 8. Notify supervisor if resistance value cannot be met. 98 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

119 11 Section Work in electrical stations PRINCIPLE On entry or exit to any electrical station all workers shall adhere to correct entry and safe working practices in the electrical station.

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121 SECTION 11 Work in electrical stations 11.1 Entry of electrical stations No worker shall enter an electrical station or enclosure containing HV electrical apparatus unless: a. the worker is authorised to enter electrical stations; or b. the worker is an instructed person who has undertaken a work site induction to work in the electrical station; or c. an ordinary person is accompanied by a authorised worker to enter electrical stations. The ordinary person shall strictly obey all instructions given by the authorised worker; and d. all persons and/or workers are aware of the hazard, risks and controls for the electrical station, including safe approach distances. All persons shall make themselves aware of any emergency procedures, warning signs or other relevant information that is displayed in the electrical station; and e. all persons and/or workers shall sign onto a risk assessment and follow the conditions of any access authority. All consideration shall be made to any special requirements of indoor, basement and underground stations. When entering electrical stations where alternative exits are provided, the authorised or electrical worker shall ensure that these alternative exits can easily be opened and that there is no obstruction to free exit. Upon entering and leaving a zone substation, System Control shall be notified by an authorised or electrical worker and they shall ensure that all vehicle and entrance gates and doors are closed after them. All workers upon entering and while inside an electrical station or any other building or enclosure containing HV electrical apparatus shall wear protective clothing appropriate to the work being conducted, as detailed in Clause 4.2 Personal protective equipment. All workers shall ensure that all doors and gates are secured upon exit General working practices The following work practices shall be followed when working in electrical stations: 11 a. doors, panels or covers enclosing live equipment shall be kept closed except when work is being performed inside that enclosure and that the correct item of electrical apparatus is located and identified; and b. materials shall not be allowed to block points of egress, doorways, obstruct passageways, hinder normal operations, work, or access to fire extinguishers, deluge showers, first aid kits, and telephones, and control switches or any operating equipment; and c. long objects such as ladders, conduits, earthing rods, portable earthing devices etc, shall be handled with care in the vicinity of live exposed conductors. Where practicable, long objects shall be carried by two people, holding the objects below shoulder height in a horizontal position and as close as practical to the ends of the object, so as to maintain maximum control; and d. when mobile plant is being used within the confines of an electrical station and is likely to come within less than twice the safe approach distances specified in Table 2.2 Safe approach distance (mm) to live conductors for vehicles and mobile plant, or when the plant is carrying out excavation work, then the mobile plant shall be fitted with a trailing earth cable attached SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

122 SECTION 11 Work in electrical stations to a suitable connection point and connected to the earth grid of the electrical station that is capable of carrying the maximum prospective earth fault current in that station (refer to Clause Use of mobile plant). e. excavation within an electrical station shall not be commenced until the location of all underground cables, earthing conductors, ducts, conduits, pits or other underground infrastructure in the vicinity of the proposed excavation have been positively identified and marked; and f. the integrity of any earthing conductors or other earthing system shall be maintained during any excavation by bonding or other acceptable means; and g. in the event that a circuit breaker is inadvertently tripped, the network operator should be immediately notified. No attempt shall be made to operate the tripped circuit breaker without approval from the System Control; and h. climbing of structures to gain access to equipment which is under access authority conditions is not permitted. Appropriate ladders, elevating work platforms, scaffolding and or other approved work platforms shall be used; and i. where work is to be carried out on or near HV electrical station busbars, a minimum, of one set of earthing and short-circuiting equipment shall be applied directly to the de-energised busbar or bus section that is being worked on. When the busbar or bus section is divided into sections, each section shall be short-circuited and earthed before being divided. 11 Figure 11.1 Example of operational earths in zone substation 100 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

123 SECTION 11 Work in electrical stations 11.3 Hazards within electrical stations Persons entering electrical stations shall make themselves aware of any special hazards that exist and place into effect reasonable control measures to manage those hazards. Protective devices or interlock systems shall not be interfered with, bypassed or made inoperative except in accordance with procedures (refer Appendix A) Electrical conductors Low voltage (LV) Persons working on or near LV panels, instrument transformer secondaries and panel wiring shall treat them as LV exposed conductors unless contact is prevented by a barrier of rigid material or they are covered by insulation in sound condition and of adequate rating for the voltage concerned, in accordance with relevant Australian standards (refer Appendix B). High voltage (HV) All electrical stations shall be designed, constructed and maintained, to ensure that live exposed electrical conductors maintain both statutory and design clearances in accordance with relevant Australian standards (refer Appendix B). Extra Low Voltage (ELV) When work is carried out in close proximity to ELV, where there is a risk of harmful arcing, electric shock, burns, fire or explosion, appropriate controls shall be implemented such as isolation and or the use of insulating tools or barriers Electrical induction Suitable precautions shall be taken by persons to avoid the dangers of induction when carrying out work on isolated electrical apparatus that is located near live conductors. Additional working earths, short circuits and bonds shall be applied where necessary to ensure equipotential conditions are maintained under all conditions Earth potential rise Equipment that may be subjected to earth potential rise shall be insulated, isolated, bonded, or other approved measures taken to reduce the risk to a satisfactory level Chemical hazards Where chemical hazards exist, signs (either temporary or permanent) shall be erected warning of the dangers present. Instructions for persons responding to the hazards shall be prominently displayed. Extreme care shall be exercised to reduce the possibility of injury occurring following the decomposition of products which may occur as a result of faults and explosions or from the residues of chemicals, such as polychlorinated biphenyls (PCBs) and sulphur hexafluoride (SF 6 ) Confined spaces When an area within an electrical station has been identified as a confined space approved work procedures shall be followed (refer Appendix A). When working in a confined space the risk of injuries may increase as a result of exposure to HV from cable sheaths, earthing systems, the close proximity to moving parts on switchgear and the possibility of engulfment due to release of SF 6 or other gases. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

124 SECTION 11 Work in electrical stations Stored energy Equipment prepared for work which is capable of storing some form of energy, such as circuit breaker operating mechanisms, shall be fully discharged or otherwise disabled in a manner approved prior to work commencing unless otherwise specifically requested by the workers. Gas cylinders shall be transported and secured upright to prevent rocketing. Where capacitors or capacitive charge may exist, work shall not commence until the equipment has been isolated, earthed and short-circuited and the equipment should be regarded as live until discharged in accordance with approved procedures (refer Appendix A) Battery Rooms A worker working in the battery room of a zone substation, or on batteries in a distribution substation shall be appropriately trained and instructed, wear approved protective clothing, including safety glasses and always work in accordance with procedures (refer Appendix A). Because of the hazards associated with batteries and the potential risk of explosion, smoking or the use of an exposed flame in a battery room, or any enclosure where vented batteries are installed, is strictly prohibited. Persons working in battery rooms shall ensure that the rooms are adequately ventilated by means of the natural or forced ventilation if provided. Battery leads shall not be connected/disconnected as this may generate sparks. Leads shall be disconnected only when no current is flowing in the battery circuit. Connections should not be made if they result in current flow (i.e. operating isolating devices in first instance). Precautions shall be in place to ensure that arcing caused by the sparking caused by power tools or by short circuiting with conductive materials such as tools and jewellery does not occur. Only insulated tools shall be used on batteries. Eye wash facilities shall be provided in the immediate vicinity of battery rooms where a voltage greater than 60V DC are part of an electrical station Pilot, signalling, telephone and optic cables When working on any signalling type cable, all workers shall make use of the insulation provided by wooden cubicles, insulating barriers or screens, isolating transformers or other isolating devices. Work on protection equipment connected to overhead pilot cables may be carried out with the overhead HV mains live provided that the protection equipment is electrically isolated from the overhead pilots by isolating transformers, interposing relays or other suitable devices. Before jointing work is carried out on either overhead or underground pilot cables, they should first be disconnected from all sources of supply. In all cases work shall proceed on pilot cables treating them as live LV apparatus. When work is required to be carried out on pilot cable end terminations (except as specified above), this may be done with other cores of the pilot cable energised at normal operating potential, provided that all precautions are taken as for live LV work until the cores or terminals being worked on have been identified and proved de-energised. All cores or terminals that are not to be worked on shall be treated as though they are energised. All fibre optic cables shall be treated as active and bare ends should not be viewed directly unless it can be confirmed that the fibre is not connected. Further precautions should be taken to avoid exposure from glass fibre splinters entering body. Fusion splicers use an electric arc to make splices and should not be used around flammable gases or where explosive gases could accumulate. 102 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

125 SECTION 11 Work in electrical stations Current and voltage circuits Before working on the secondary circuits of current transformers including protection and revenue metering, the worker shall ensure that all necessary precautions are taken to prove that secondary conductors are at earth potential and to prevent an open circuited secondary situation. Before working on voltage circuits and where practicable, the circuit shall be isolated by removing the fuse cartridges for permanently fused voltage circuits or opening the voltage links in the test block. Testing to prove de-energised shall be conducted before commencing work Voltage and auxiliary transformers Before working on voltage transformers, other than draw out type transformers, isolation, earthing and short-circuiting of the HV windings and isolation of all secondary windings of the voltage transformers shall be carried out where practicable. If the HV conductors to which the voltage and auxiliary transformers are connected is isolated, earthed and short circuited, the voltage transformer may remain connected to the HV conductors provided that the LV windings are isolated and danger tagged. For capacitive voltage transformers or similar equipment, do not apply earths immediately after isolation. Allow a minimum period of 5 minutes to discharge before applying any earths Fire protection systems When persons are carrying out work in electrical stations with fixed fire protection systems, suitable control measures shall be taken to ensure the safety of workers and equipment. Precautions may include the isolation, or the making non-auto of fire detection and extinguishing systems. Persons should also check for the existence of remote fire control gas injection systems (such as bulk injection carbon dioxide) to ensure that operation cannot occur during occupancy. On exiting an electrical station, fire detection and extinguishing systems made non-auto prior to work commencing, shall be reset for normal automatic operation. 11 Figure 11.2 Example of vehicle earthing in a zone substation SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

126 SECTION 11 Work in electrical stations This page left intentionally blank Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

127 12 Section Metering PRINCIPLE For work on metering installations, workers shall be appropriately trained or authorised. The basic safe working principles set out in Section 9 Access to low voltage electrical apparatus apply.

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129 SECTION 12 Metering 12.1 General A risk assessment shall be conducted to assist in the identification and control of hazards to ensure that the work can be performed safely. The risk assessment shall consider as a minimum the: a. condition of the electrical apparatus, for example wiring, meters and terminals; and b. proximity of other electrical apparatus, for example potential second points of contact; and c. proximity of earthed equipment and structures; and d. work environment, for example heat, light, weather conditions; and e. use of personal protective apparel and insulated tools; and f. use of insulated barriers and covers. Subject to the outcomes of the risk assessment and procedures, revenue metering activities may be performed by workers working alone Metering new installations Before proceeding with such work, the worker shall test all components of the installation to be worked on to prove that they are not live and make the work area secure by isolating at the service fuse, locking off switches or providing other physical breaks as appropriate in accordance with procedures (refer Appendix A) Metering changes to existing installations Only authorised workers shall change metering equipment. When work is to be done, the worker shall isolate in an approved manner, test the conductors to prove that they are not live and make the work area secure by isolating at the service fuse, locking off switches or applying other physical breaks as appropriate Metering work on live equipment Only authorised workers are permitted to work on live metering equipment for testing or investigative purposes. Test equipment shall only be connected/disconnected from live metering equipment terminals when it can be done safely and the actions of connection/disconnection do not involve the making or breaking of customer load. 12 Workers about to work on or within reach of live circuits shall: a. be appropriately trained and authorised for the purpose of work; and b. undertake a hazard identification and risk assessment; and c. use appropriate PPE including insulating gloves; and d. only use insulated tools; and e. apply an approved insulating sheath over any exposed conductor that is removed from its terminal. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

130 SECTION 12 Metering 12.5 Metering work on transformer operated equipment Work on transformer operational equipment shall be performed by authorised workers only Earthed secondary system Current circuits This applies to all current transformer circuits, including protection and revenue metering. Before working on the secondary circuits of current transformers, the worker shall ensure that all necessary precautions are taken: a. by undertaking a hazard identification and risk assessment having regard to the surrounding conditions and the movement of other people in the area; and b. to prove that secondary conductors are at earth potential; and c. to prevent an open circuited secondary situation Voltage circuits Before working on voltage circuits on a meter panel the circuit shall be isolated by: a. removing the fuse cartridges for permanently fused voltage circuits; or b. opening the voltage links in the meter test block; and c. testing to prove de-energised before commencing work. Voltage circuits connected on the supply side of a meter panel shall be isolated and tested to prove de-energised before work is commenced on them Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

131 13 Section Public lighting PRINCIPLE Public lighting is lighting in streets and in public areas owned by the ACT or Federal Government.

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133 SECTION 13 Public lighting 13.1 General Isolation of and work on public lighting is to be carried out in accordance with street lighting procedures (refer Appendix A). When working upon public lighting conductors, luminaires, photo electric cells, conductive (steel/ concrete) columns, outreach arms, stays, hauling wires (if used) and other associated conducting materials, they shall be treated as live at all times until appropriate precautions are taken to isolate or de-energise the apparatus. This is necessary because they may become live through wet or defective insulation: a. while the circuit is live; or b. when someone makes the circuit live for testing; or c. if the wiring is disturbed, for example when a mid-hinge column is moved or during equipment replacement. Note: Columns may be supplied permanently from mini-pillars, traffic light controllers or overhead conductors Precautions to be taken A risk assessment shall be conducted to assist in the identification and control of hazards to ensure that the work can be performed safely. The risk assessment shall consider as a minimum: a. the condition of the electrical apparatus, for example the soundness of structures, conductors and insulators; and b. proximity of other electrical conductors or objects at different potential, for example potential second points of contact; and c. proximity of earthed equipment and structures including communications equipment and carriers, pillars and pits; and d. work environment, for example heat, light, weather conditions; and e. use of appropriately rated apparel and equipment; and f. the use of insulated barriers, mats and covers. All work shall be performed in accordance with procedures (refer Appendix A). Only electrical workers, or apprentice electrical workers under their supervision, shall be permitted to work on public lighting systems Testing conductive objects Other than as provided by Clause 13.4 Changing tubes or lamps from an elevating work platform, outreach arms, and conductive (steel/concrete) columns shall be tested to an independent earth with an approved voltage tester before work is commenced. When an outreach arm, or conductive (steel/concrete) column is found to be energised, the supply to the public light shall be disconnected and made safe and/or the fault corrected. The fault should be reported in accordance with procedures (refer Appendix A). SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

134 SECTION 13 Public lighting 13.4 Changing tubes or lamps from an elevating work platform When working from an approved, insulated and tested elevating work platform, the test of outreach arms may be dispensed with when changing tubes or lamps (refer to Clause 13.3 Testing conductive objects) Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

135 14 Section Work by other personnel not under the supervision of ActewAGL PRINCIPLE A safe system of work shall be provided for other persons not under the on-site supervision of ActewAGL.

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137 SECTION 14 Work by other personnel not under the supervision of ActewAGL 14.1 General Following receipt of notification of intention of ordinary persons to work near or at safe approach distance or, when appropriate in the vicinity of electrical apparatus, the use of procedures incorporating an appropriate permit to work or SCAP shall be considered for application during the proposed works. For the purposes of this clause, persons not under the supervision of ActewAGL are persons or organisations that have no contractual obligation to ActewAGL and are not performing work for ActewAGL for the particular task Work on abandoned cables For work by external persons on abandoned cables owned by ActewAGL, the use of appropriate identification processes shall be followed during the proposed works. If it is necessary to spike abandoned cables on site to prove they are de-energised this shall be done by ActewAGL in accordance with procedures (refer Appendix A) Permit to work issued to non-actewagl personnel ActewAGL may issue a permit to work. When a request is received for isolation of electrical conductors or apparatus, then the isolation and issue of a permit to work shall be in accordance with these Electrical Safety Rules. The permit to work shall be issued to an authorised recipient for permits to work. If the person is not an authorised recipient for permits to work then the permit to work shall be issued to an ActewAGL employee who is an authorised recipient for electrical access permits. The person shall sign onto the permit to work following the procedures as outlined in Clause 7.4 Permit to work. 14 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

138 SECTION 14 Work by other personnel not under the supervision of ActewAGL 14.4 Work by tree surgeons requiring the isolation of overhead conductors When tree surgeons engaged to clear vegetation near overhead lines require the isolation of those overhead lines, then the isolation and issue of a permit to work shall be in accordance with these Electrical Safety Rules (refer Clause 7.4 Permit to work). Prior to the issue of a permit to work near or in the vicinity of HV conductors, one set of operational earths shall be applied within the isolation area (not necessarily visible from the work site) to prove de-energised (refer Clause Issue, receipt, relinquishment and cancellation of permits to work). Where the permit to work is issued to an ActewAGL employee in accordance with Clause 14.3 Permit to work issued to non-actewagl personnel, the worker shall remain on-site as the recipient of the access authority and is responsible to ensure the tree surgeon maintains safe approach distances while vegetation clearing near the overhead lines. The use of approved and tested insulated equipment is required by the tree surgeon. For work near LV conductors, the application of bonders is not required for the issue of a permit to work and isolation of micro photovoltaic cell (class 1) installations is not required Work by electrical contractors requiring the isolation of electrical apparatus For the purpose of this section, an electrical contractor means a licensed electrician not employed or engaged by ActewAGL. When electrical contractors require the isolation of ActewAGL s electrical apparatus to enable them to work on the customer s Installation in accordance with AS/NZS 3000 Wiring Rules and ActewAGL s Service and Installation Rules, then the isolation and issue of a SCAP shall be in accordance with these Electrical Safety Rules Statement of condition of apparatus and plant (SCAP) The SCAP is a statement that covers the condition of ActewAGL s apparatus or plant and does not itself authorise work on or near the apparatus or plant. The SCAP shall only be used to isolate ActewAGL s electricity network to provide a private representative safe access to conduct works on their private network. 14 A SCAP shall only be issued by an authorised worker to a licensed electrician or a person who has been granted permission by ActewAGL to accept a SCAP (the representative). A SCAP shall not be issued to any employee or contractor of ActewAGL. The SCAP does not apply to another supply authority which maintains a 24 hour control room. The conditions of isolation shall remain unchanged until the SCAP is cancelled Application for a SCAP Before making an application for a SCAP, the representative shall establish that the proposed work has been properly planned and can be carried out safely. Consideration shall be given to; 110 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

139 SECTION 14 Work by other personnel not under the supervision of ActewAGL a. safe work methods; and b. all hazards, risks and controls; and c. the work environment; and d. the skills and authorisations of the workers. Application for a SCAP may be in writing using the request for service form or by to the appropriate section The issue and acceptance of a SCAP A SCAP and another access authority shall not be on issue on the same plant or apparatus simultaneously. A SCAP shall be issued by an authorised worker in person. The authorised worker shall contact System Control for a clearance number before the plant or apparatus is isolated. Before the SCAP is issued, testing to prove de-energised shall be in the presence of the representative. At the time of issue the authorised worker shall clearly describe and, where practicable, show the plant or apparatus covered by the SCAP to the representative. The authorised worker shall also describe and indicate the nearest points of supply and any nearby live electrical apparatus. The representative shall acknowledge that they understand the condition of the plant or apparatus by signing the SCAP form and accepting the SCAP. It is the responsibility of the representative to ensure every worker clearly understands the conditions of the plant or apparatus before they begin work. Once issued, ActewAGL will not change the condition of the electrical plant or apparatus recorded on the SCAP form until such time as the SCAP has been returned by the representative Return and cancellation of a SCAP When a SCAP is returned, the representative shall: a. ensure that all tools and equipment are clear and will remain clear of the plant or electrical apparatus; and b. ensure that all work has ceased and that all workers are informed of the return of the SCAP; and c. sign off to indicate that the SCAP is ready for return to the authorised worker who issued it; and d. understand that the condition of the plant or apparatus can now change without further notice; and e. advise the authorised worker of any condition of the plant or apparatus which could affect its operation. Before a SCAP is cancelled by the authorised worker. The authorised worker shall: a. confirm the that representative has returned the signed SCAP; and b. confirm that the representative understands that the condition of the plant or apparatus can now change without further notice; and c. conduct a job risk assessment for the site and proposed work; and d. verify the condition of the plant or apparatus with the representative; e. contact System Control to confirm cancellation of the SCAP; and f. re-energise the representative s installation from the electricity network. 14 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

140 SECTION 14 Work by other personnel not under the supervision of ActewAGL Issue, acceptance, return and cancellation of Statement of Condition of Apparatus and Plant (SCAP) Application received Request for service form or via Key Authorised worker Representative Are there any other access authorities on plant or apparatus? Yes Do not issue SCAP and contact system control No Has the work been planned? Yes Can work be carried out safely? No Refer back to the Representative to amend No Yes SCAP issued by authorised electrical worker SCAP accepted by the Representative Work completed Issue and acceptance of SCAP Authorised worker shall: contact System Control before isolation; and prove de-energised to the Representative; and point out nearest points of supply and live electrical apparatus; and issue the SCAP to Representative. Representative shall ensure every worker understands SCAP conditions Return and cancellation of SCAP Representative shall: ensure that all tools, equipment and workers are clear; and ensure that all work has ceased; and sign off to indicate that the SCAP is ready for return; and advise the Authorised worker of conditions affecting the apparatus; and agree the condition of the apparatus can change without notice. 14 SCAP returned by the Representative SCAP cancelled by the authorised worker Return and cancellation of SCAP Authorised worker shall: confirm the Representative has returned the signed SCAP; and verify with the Representative the condition of the apparatus; and contact System Control to cancel the SCAP; and then re-energise the Representative s installation. End Chart 14.1 Process for the issue of a SCAP 112 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

141 SECTION 14 Work by other personnel not under the supervision of ActewAGL Statement of condition of apparatus or plant (SCAP) No. This statement covers only the state of the apparatus or plant specified hereon and does not itself authorise work on or near the apparatus or plant. Work order number Date / / System Control or Dispatch issued clearance number (if applicable) Time (24hr time) Disconnection and reconnection (DNR) request number (if applicable) Time (24hr time) This SCAP is issued for Streetlighting Low voltage apparatus High voltage apparatus I hereby certify to (representative/business name) That I have isolated (where applicable) the following electrical apparatus and/or conductors at (location) on Date Time (24hr time) The electrical apparatus and/or conductors have been: Tested and proven de-energised: and Earthed and/or bonded (where applicable): ActewAGL will not change this condition until such time as this SCAP has been returned by the representative it has been issued to. 1. Tested at location/s High voltage earthing applied at Low voltage bonders applied at Acceptance I acknowledge and understand the condition of apparatus or plant as stated above and hereby accept this statement. Representative (Licenced electrician / authorised person - not engaged by ActewAGL) EXAMPLE Print name Title Signed Site contact number Date / / Time (24hr time) Electrical licence number Issuer (ActewAGL authorised worker) I hereby issue this statement in accordance with ActewAGL s Electrical Safety Rules. Print name Title Signed Contact number / / Date Time (24hr time) Authorised operator number (Network switching only) Return I hereby return this statement and fully understand that the condition of the aforesaid apparatus or plant may be changed without further reference to me. All relevant personnel have been advised and are informed that this SCAP has been returned and I further state that any work carried out will not have an impact on ActewAGL s apparatus or plant that was the subject of this SCAP. Representative (Licenced electrician / authorised person not engaged by ActewAGL) Name Signed Date / / Time (24hr time) Cancellation Issuer (ActewAGL authorised worker) Name Signed Date / / Time (24hr time) Confirmation of cancellation with System Control and / or Dispatcher Date / / Time (24hr time) ActewAGL House 40 Bunda Street Canberra ACT 2600 I GPO Box 366 Canberra ACT 2601 t I f I actewagl.com.au ActewAGL Distribution ABN a partnership of Jemena Networks (ACT) Pty Ltd ABN and Icon Distribution Investments Limited ABN Stock code: NSF112-B Green - representative White - book IMS NO: PR CCA0914/24 14 Figure 14.1 Example of a SCAP form SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

142 SECTION 14 Work by other personnel not under the supervision of ActewAGL This page left intentionally blank Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

143 APPENDIX Appendix A ActewAGL policy and procedure list The following is a list of ActewAGL documents referred to in these safety rules. This list is not exhaustive and is subject to withdrawal, revision or addition at any time. Procedure Number SM11144 PR4658 PR1301 PR1202 WO1306 WO1307 PR4609 WO1310 PR4901 PR1123 PO4203 PR1312 SM1144 WF1318 PR1134 PR4620 PR4621 PR4636 PR4619 PR4601 PR4610 PR4605 PR4649 PR1313 WF4651 PR4608 WF4611 PR4625 WO1222 Procedure Title ActewAGL service and installation rules Access authorities Activating/isolating street light control points Approval to work on or near ActewAGL s overhead assets Cable identification and spiking Cable identification and testing Confined space procedure Confined space trailer use and storage Control of work sites Distribution substation battery and battery charger maintenance Drugs and alcohol policy Earthing of street lighting columns Earthing principles Electrical safety testing of high voltage testing equipment Elevating work platform (EWP) rescue Environmental spills Excavation and trenching Explosive powered hand tools Fatigue management First aid in the workplace Hazardous manual tasks and ergonomics Hazardous substances Health monitoring High voltage switching Identification and use of cable cutting and stripping tools Incident and near miss investigation procedure Instructions for safe to climb test Job risk assessment (pre start) procedure Live HV network access SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

144 APPENDIX SM1305 PR4630 PR4668 PR1315 PR4614 PR4607 PR1316 WO1221 PR4602 WF4655 SM11888 WF4648 WO1201 PR4631 PR4639 PR 4623 PR1200 PR1349 WF1371 PR1203 PR4626 PR4618 PR4617 PR1124 PR1146 Live line manual Lock out / tag out procedure Low voltage bonding Low voltage switching Management of asbestos and synthetic mineral fibres Management of noise Network access Network access acceptance criteria Personal protective clothing and equipment Polarity, phasing and rotation tests Pole and line inspection manual Pole top rescue Preparation and checking of disconnection and reconnection instructions Prevention of falls Protection technician sanction for test recipient requirements Safe working in adverse weather conditions Standard apparatus terminology and labelling Statement of condition of apparatus or plant (SCAP Procedure) Street light maintenance System switching request information instructions Tools and equipment testing and inspection procedure Traffic control at work sites Working alone and or in isolated areas Zone substation battery deep cycle discharge test Zone substation inspections and maintenance strategy 116 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

145 APPENDIX Appendix B Reference documents The list of documents in this appendix is not exhaustive and is for guidance only. Other relevant documents and standards may be applicable. Acts and Regulations current to the time of review. B1 Electrical Safety Act Legislation Electrical Safety Regulation Utilities Technical Regulation Act Work Health and Safety Act Work Health and Safety Regulation B2 Industry guidelines ACT building and construction industry safety handbook 5 th edition 2013 Code of practice on electrical safety for the distribution businesses in the victorian electricity supply industry (The Green Book) Energy Networks Association guidelines ENA Doc ENA Doc ENA Doc ENA Doc ENA Doc ENA Doc ENA NENS ENA Doc ENA NENS ENA NENS ENA NENS ENA Doc ENA NENS ENA NENS ENA NENS Cross-arm supply and performance specification ENA industry guideline for the inspection, assessment and maintenance of overhead power lines ENA national guideline for mobile plant earthing Guideline for the management of risks when working alone Joint use of power poles model agreement National electricity network safety code National fall protection guidelines for the electricity industry National guideline for management of tools and equipment used in the electricity supply industry National guidelines for aerial surveillance of overhead electricity networks National guidelines for contractor occupational health and safety management National guidelines for manual reclosing of high voltage electrical apparatus following a fault operation (manual reclose guidelines) National guidelines for prevention of unauthorised access to electricity infrastructure National guidelines for safe access to electrical and mechanical apparatus National guidelines for safe approach distances to electrical and mechanical apparatus National guidelines for the selection, use and maintenance of personal protective equipment for electrical hazards SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book

146 APPENDIX ENA Doc ENA Doc ENA Doc ENA Doc ENA Doc ENA EG National guidelines on electrical safety for emergency service personnel National low voltage electricity network electrical protection guideline Network passport guideline Pole supply and performance specification Specification for polemounting distribution transformers Substation earthing guide B3 Australian standards AS Confined spaces AS/NZS 3000:2007 AS :2010 AS AS :2010 AS AS/NZS :2007 AS/NZS 3760:2010 AS/NZS 4801:2001 AS/NZS 4836:2011 AS 1319:1994 AS 2067:2008 Electrical installations (wiring rules) High voltage live working general High-voltage live working bare hand High-voltage live working glove and barrier work High-voltage live working stick work Industrial fall-arrest systems and devices In-service safety inspection and testing of electrical equipment Occupational health and safety management systems specification with guidance for use Safe working on or near low-voltage electrical installations and equipment Safety signs for the occupational environment Substations and high voltage installations exceeding 1 kv a.c. 118 Blue Book 2015 SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED

147 APPENDIX Version register Revision number Revision date Page number Description of revision Initial 4/12/09 Initial Legal review 29/12/09 Blue revision marks Formatting Review Some legal issues; some grammar. This publication is important enough to deserve the attention of a competent editor/proof reader. I have taken on that role to a degree, but the Marketing unit should be asked to have one of its people review the document for style and clarity of prose. Ian Macara. 17/01/10 Confirming formatting and revision from legal. Final Review 19/01/10 Completed formatting and revision from legal. Legal review 20/01/10 Victoria Parkinson. Chapter 8 onwards. OPTEC 11/02/10 Definition of SCAP moved. Definition of vicinity added Cancellation of SFT method added. Corrected formatting and SCAP procedure added to Dead replaced with isolated and earthed. VO.1 14 July 2011 Updates Updates from committee meeting 16/3/2011 Maher/Wilson 2013 Feb 2013 Complete review 2014 June 2014 Complete review 2015 April 2015 Review Review and update Project team established and reviewed items identified previously. Work Practices created to take ownership of Blue Book and tasked with complete review. This area is to be issued each update. SM4605 REVISION 1 UNCONTROLLED WHEN PRINTED Blue Book