Safety Policy and Procedure

Transcription

1 Safety Policy and Procedure Policy Number 020 Authorized By: The Cianbro Companies Alan Burton Title: Electrical Safety and Effective Date: 04/18/94 Page 1 of 18 1 Status 1.1 Update of existing policy, effective 06/03/11. 2 Purpose 2.1 Provide installation and maintenance procedures for temporary power equipment and systems and identify requirements and procedures for live circuit work and arc flash personal protection. 3 Applicability 3.1 This policy applies to all subsidiary companies and departments of The Cianbro Companies. 3.2 All organizations are required to comply with the provisions of this policy and procedure. Any deviation, unless spelled out specifically in the policy, requires the permission of the Corporate Safety Officer or designee. 4 Definitions 4.1 Arc Flash: A dangerous condition of extreme heat (energy) created by an electrical explosion. (A secondary dangerous condition resulting from an electrical explosion would be molten and solid metals and plastics.) 4.2 Arc Flash Hazard: A dangerous condition associated with the possible release of energy caused by an electric arc. 4.3 Boundary: An approach limit at a distance from exposed live parts within which a person could receive a second degree burn if an electrical flash were to occur. The arc flash boundary for systems which are 600 volts or less shall be a minimum of four feet unless specifically calculated. 4.4 Bonded: The electrical interconnection of conductive parts to maintain a common electrical voltage. 4.5 Competent Person: A person who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to team members, and who has authorization to take prompt corrective measures to eliminate them. 4.6 Energized: Electrically connected to or having a voltage. 4.7 Exposed To: Capable of being inadvertently touched or approached nearer than a safe distance by a person. It is applied to parts that are not suitably guarded, isolated, or insulated. 4.8 Flame-Resistant (FR): The property of a material whereby combustion is prevented, terminated, or inhibited following the application of a flaming or non-flaming source of ignition, with or without subsequent removal of the ignition source. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 1

2 4.9 Flash Hazard Analysis: A study investigating a workers potential exposure to arc-flash energy, conducted for the purpose of injury prevention and the determination of safe work practices, arc flash boundary and the appropriate levels of PPE Ground Fault Circuit Interrupter (GFCI): A fast-acting circuit breaker that senses small imbalances in circuit current (5 milliamps or more) caused by current leakage to ground and in a fraction of a second shuts off the electricity. The purpose of the GFCI is to provide protection from electrical shock to the user NEC (NFPA 70): National Electrical Code is the standard for electrical installations NFPA 70E: National Fire Protection Association (publication) 70E is the Standard for Electrical Safety in the Workplace Qualified Person: A person who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training and experience has successfully demonstrated their ability to solve or resolve problems relating to the subject matter, the work, or the project Voltage: The greatest difference of potential between any two conductors of a circuit Working On: Touching, handling, connecting or disconnecting energized parts. 5 Policy 5.1 When temporary electrical equipment and systems are installed and maintained, or when any temporary or permanent live circuit work occurs, Cianbro will meet applicable OSHA standards, the NEC and NFPA 70E requirements. 6 Responsibilities 6.1 The Corporate Safety Officer or designee is responsible electrical safety and arc flash protection under this policy. 6.2 The top Cianbro manager of the job site is responsible for the implementation of this policy on the job site. 6.3 Corporate Safety is responsible for maintaining this document. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 2

3 7 Electrical Safety and Index 7.2 Training Ground Fault Circuit Interrupters (GFCI) for Personnel Protection Power Cord Inspection Program Portable Electric Generators/Welders/Light Stands Temporary Lighting Special Conditions Electrical Surveys Cianbro Policy and Procedure Safety At Home Related Documents Appendix A Cianbro Wiring Procedures for Portable Cords On our construction projects, we widely use temporary power and portable tools. Hazards are created when cords, cord connectors, cord and plug connected equipment, and receptacles are improperly used and maintained. Generally, flexible cords are more vulnerable to damage than other electrical equipment and deserve special attention. In addition, we often work around energized electrical circuits from operating a 120 V breaker by properly trained team members to working in cabinets with exposed live parts by qualified electricians. 7.2 Training All team members must be trained in the requirements of this policy Team members who are required to work within the limited approach boundary as defined in NFPA 70E must be qualified and have additional training. See 050 Electrical Operations Program Safety Policy and Procedure for specific training topics required Training shall include identifying and understanding the relationship between the electrical hazard and potential injury Training shall be documented with name, date, trainer, and content and sent to the Cianbro Training Center for retention through entry into our system. 7.3 Ground Fault Circuit Interrupters (GFCI) for Personnel Protection The Ground Fault Circuit Interrupter (GFCI) is a fast-acting circuit breaker that senses small imbalances in the circuit (5 milliamps or more) caused by current leakage to ground and in a fraction of a second shuts off the electricity. The purpose of the GFCI is to provide protection from electrical shock to the user. A. GFCI protection is required on all 120-volt single-phase 15, 20, and 30 amp receptacle outlets. The GFCI plug receptacles, panel breakers or cord pigtails must be in place before using a cord set so the cord set and all down stream loads are protected. B. All 120 volt 15, 20, and 30 amp single-phase outlets, cord sets, and cord and plug connected equipment shall be protected by GFCI. C. GFCI devices like plug receptacles or cord pigtails are required to be tested each day before use. This is to be done by the person using the GFCI. The test is performed by pushing the test button on the GFCI, the reset button will pop out and the electricity will be shut off. This will be verified by having the user plug a tool or light into the GFCI, turn the tool switch on and make sure there is no power to the tool. A competent person may also verify by using a voltage tester to make sure there is no power. A plug-in GFCI tester can be used to test the device for proper trip functions. If the button does not pop out, take the GFCI out of service either by tagging it out or if it s a portable device, tag it out of service (out of order, Policy: 020 Electrical Safety and Rev. 06/03/11 Page 3

4 for repair, damaged, etc.) and return it to the tool crib for repair by a qualified electrician. D. GFCI circuit breakers located in electrical panels used to protect outlet circuits must be tested at least monthly, after any violent thunderstorm or more often if required by the manufacturer. GFCI circuit breakers tests shall be documented. Know what systems are protected that may be in use, before checking a GFCI breaker or cord pigtail device. E. OSHA requires testing of GFCI devices used for personnel protection. F. Refer to Cianbro Electrical Operations Program for GFCI testing procedure. 7.4 Power Cord Inspection Program Cianbro has a power cord inspection program that requires inspection of all outlets, cord sets, and cord/plug connected tools and equipment cords before use Implementation of this program is the responsibility of the supervisor in charge. It is the responsibility of every team member to verify that each cord set (extension cord) and any equipment connected by cord and plug is visually inspected before each day's use for defects such as deformed or missing prongs, damaged insulation, indications of possible internal damage or incorrect quarterly identification. Equipment found damaged shall be removed from service, tagged, and not used until repairs have been made by a qualified electrician The project manager/superintendent or supervisor in charge shall ensure a qualified person is assigned the responsibility to conduct quarterly inspections of all outlets, cord sets, and cord/plug connected equipment. This specifically includes 240 and 480 volt cords and all other cords but does not include those cords that are 120 volt singlephase 15, 20, and 30 amps or those cord sets in storage. The following tests and inspections shall be performed. A. Conduct visual inspections for external defects and possible internal damage. B. With the use of testers, test to determine correct connections and whether or not the outlet, cord set, or cord/plug connected equipment is properly grounded. C. Inspections and tests must be performed before first time use, (new equipment or cords) before equipment is used following repairs or suspected damage and before every quarter of each calendar year. D. Rental or other equipment shall also be inspected and tested in the same way Quarterly checks and tests must be accomplished and documented by using the proper colored electrical tape wrapped around the cord approximately three to six inches from the male plug end. Remove old quarter tape before applying new color tape. A. Equipment shall be marked as follows. Test/Inspection Quarter Tape Color Memory Code Month December Jan, Feb, Mar White Snow/Winter March Apr, May, Jun Green Grass/Spring June Jul, Aug, Sep Red Hot/Summer September Oct, Nov, Dec Orange Foliage/Fall B. Remove old tape and apply new color each quarter. C. Double-insulated tools, other than 120 volt single-phase 15, 20, or 30 amp, should also be taped in the same manner to document that a visual inspection has been done. D. Electrical equipment that remain in a fixed location like a field office trailer; do not have to be checked per this power cord inspection program. E. Quarterly intervals shall not exceed three months. In order to ensure turnover from quarter to quarter, tests and inspections should start during the month prior to the Policy: 020 Electrical Safety and Rev. 06/03/11 Page 4

5 start of the new quarter and should be completed by the first day of the new quarter Subcontractors must also show evidence of their assured equipment grounding conductor (AEGC) or GFCI program and method of documenting inspection or checks. They may adopt our electrical program; however, they shall be fully responsible for inspection/testing and controlling their equipment Repairs to cord sets or the electrical components of power tools must be made by a qualified electrician. This includes plug and cap connections. The only exception to this is that qualified persons other than electricians may make repairs to 120 V cord assemblies (repairs to cords and plugs, not internal repairs to power tools) if they have been approved through the procedure contained in SD1070 found out on Cianbro.net See 9.1 Appendix A for Cianbro Wiring Procedure for Portable Cords See SD1070 for Authorized Electrical Cord Repair Person Requirements Cable Stripping methods and tools require special planning to avoid personal injury from cuts. Specialty cable/wire stripping tools shall be used whenever possible. Some cable stripper tools that work well are: A. MK01A, ABECO- cable stripper, 3/8 to 1 inch diameter cable B. Ideal cable stripper, for larger size cables C. Rotastrip ABECO - cable stripper, works well, blades will brake D. Stripmaster - cable stripper, works well, less fatigue to wrist E. Reflex T, - cable stripper, works well, light and easy to use Only as a last resort and as determined to be a safer method, shall utility or personal knives be used. A job hazard analysis (JHA) must be completed and justification documented in the activity specific plan allowing the use of utility or personal knives. A. Cut resistant sleeves and cut resistant gloves shall be used for all cable and wire stripping when using a utility or jack knife. B. Proper instructions/training shall be given on how to safely strip cable/wire. C. Refer to Safety Policy and Procedure Numbers 017 Hand and Finger Protection and 031 Personal Protective Equipment for additional information in regard to working with sharp tools or objects. 7.5 Portable Electric Generators/Welders/Light Stands Portable electric generating equipment shall be equipped with GFCI s or portable plugin GFCI s shall be used Under the following conditions, the frame of the generator does not need an external ground (such as using a ground rod) if: A. The generator supplies only equipment mounted on the generator such as light stands, arrow boards, welders, etc. and/or plug and cord connected equipment. B. When mounted on a vehicle or barge, the frame of the generator is bonded to the frame of the vehicle or barge, and the generator supplies only equipment located on the vehicle and/or cord and plug connected equipment. C. The generator is bonded to its supporting frame and if on a trailer or vehicle to the frame of the trailer or vehicle In all other cases, generators shall be grounded by a ground rod or connection to the building grounding system as required. 7.6 Temporary Lighting Temporary area lighting is required to be supplied by its own circuit. Temporary lighting circuits are not to be used for any other purposes. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 5

6 7.6.2 Portable electric lighting used in wet or other conductive locations such as drums, tanks, and vessels shall be low voltage (12 volts or less) or 120 volts protected by GFCI s. 7.7 Special Conditions Written activity plans must be developed which address the specific work to be accomplished and all electrical hazards associated with it. Activity plans should be based on inspection of the work area and elimination, isolation, or control of identified hazards including Process Safety Management (PSM) consideration. A competent supervisor must be assigned to coordinate planning and monitor activities. Activity plans must be communicated with all persons associated with the work to be involved prior to the start of work Unanticipated or Unique Electrical Hazards A. Unique electrical hazards created during work performed by Cianbro team members shall be reported to the client including what measures are in place to control the hazard. B. Unanticipated electrical hazards identified during the work activity shall be reported to the client including what measures are in place to control the hazard and to prevent the hazardous condition from reoccurring Work on Energized Panels or Equipment A. Work on energized panels or equipment is prohibited. Whenever possible, electrical equipment must be de-energized, tested, and positively locked-out in accordance with our Zero Energy State Safety Policy and Procedure prior to conducting any work on or around it ( Tick Tracers are not to be used when identifying or testing for energized conductors.) Energized work will only be done, as an exception, when the work cannot be done with the equipment in an electrically safe working condition. Only electricians approved by the Cianbro Electrical Committee and designated as persons qualified to work on live electrical parts are authorized to perform work in energized panels or equipment. For work on or near live electrical parts reference NFPA 70E Article Working on or Near Live Parts - Justification for Work. This indicates that if live parts are not placed in electrically safe working condition, the work to be performed shall be considered energized electrical work and shall be performed by written permission only. Unqualified workers are not allowed in these areas unless the space has been placed in an electrically safe working condition. B. A completed Cianbro Energized Work Permit is required. A detailed activity plan developed with review and input by a qualified electrician is also required. Required PPE and insulated tools (with current inspection date if applicable) must be used by the qualified electrician when working on or around energized circuits where incidental contact or an arc flash could occur Work on live circuits will require using specialized equipment and protective clothing following OSHA, NEC, and NFPA 70E guidelines. A. All insulating personal protective equipment must be inspected before use each day and after any incident that could possibly have damaged the PPE. B. Rubber insulating PPE must be tested periodically. Refer to 050 Electrical Operations Program Safety Policy and Procedure for specific intervals (not to exceed 6 months for gloves or 12 months for other insulating PPE) Work on or adjacent to live circuits in confined spaces or enclosed areas with limited space will require the use of protective shields, barriers, or insulating materials to prevent team members from inadvertently touching electrical hazards. Ladders used for access to such areas must be non-conductive. Protective barriers must also be considered if team members are required to work with or handle conductive materials Policy: 020 Electrical Safety and Rev. 06/03/11 Page 6

7 adjacent to electrical hazards. Adequate lighting must always be provided in areas that contain live electrical parts There must be a minimum of two Cianbro team members, one being a qualified electrician, working at all times in an Electric Room when panels are open. No team member will ever be left alone All other work in an Electric Room will be evaluated for electrical hazards by a qualified electrician. If electrical hazards are not found to exist, work may proceed until change in conditions occurs. Should a change in conditions occur, work will be stopped and be re-evaluated by a qualified electrician Fifty (50) amp cord caps and connector bodies for both 480v and 240v cord connections used in temporary power systems are subject to failure under various environmental conditions. Items such as moisture and dust penetrate the plug s terminals and contacts. Several considerations for protection against failure are as follows: A. Temporary systems can be hard-wired very cost effectively, eliminating plug-in connections completely. B. Cords may be custom made by a qualified person (in the field or in Pittsfield) where long runs are needed in order to eliminate plug-in connections. C. Locate plug-in connections out of wet/moist areas. D. Keeping plug-in connections above floors or ground. E. Cover plug-in connections to allow water to run off without contacting the plugs. F. When plug-in connections must be used in a moist/wet environment, manufacturer s specified boots shall be installed with coupling rings, kept off wet surfaces, and covered in a manner which will allow water to run off. 7.8 Electrical Surveys The following should be surveyed routinely: A. Are electric panels completely and accurately labeled? Panels greater than 600 volts between phases shall be labeled High Voltage. Is each circuit accurately labeled? B. Are electric panels clearly accessible and not blocked off? C. Are electrical boxes and panels properly located, supported, covered, and openings sealed (no open holes)? D. Are all light bulbs properly covered, guarded, and not broken? Metal guards must be grounded as required by National Electrical Code. E. Are power cords routed up and out of travel ways? F. Are lugs and leads on electric welders properly insulated? G. Are Cianbro conex boxes correctly wired to the Cianbro standard? (Available from Cianbro Equipment LLC.) H. Are buried cables properly flagged and signed? I. Have overhead power lines been marked for work that requires cranes to be in the area? J. Are installations and modifications of electrical equipment being performed only by licensed electricians and qualified persons? K. Does this site have electrically safe working conditions? Has a detailed activity plan been developed? Has the Cianbro Energized Work Permit been filled out if energized work must be done? Does this site have electricians qualified to do energized work and certified by the Electrical Safety Committee? L. Are insulated tools and protective clothing and equipment available for work on energized systems? M. Has protective equipment and clothing been inspected each day before use for rips, tears, and damage? N. Do environmental conditions exist which create the conditions of working in or around water? (Rain, snow, foggy conditions). O. Are all electrical receptacles, covers, and cord plugs intact and free from cracks? P. Old style Cianbro 240/480 volt distribution boxes should not be used in wet environments unless covered or protected. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 7

8 Q. New style Cianbro 240/480 volt distribution boxes must be used with the covers closed at all times other than when installing or removing a cord. Extension cords must enter from under the cover and not through the side where they would be subject to damage by the cover. 7.9 Cianbro Policy and Procedure Cianbro team members and subcontractors shall perform work on electrical equipment and circuits in a de-energized electrically safe state if at all possible. The tables of NFPA 70E will be utilized, unless more accurate information is available from a system specific Arc Flash Hazard Study, to determine Arc Flash Hazard/Risk Categories. Required personal protective equipment based on the Arc Flash Hazard/Risk Category for that portion of the electrical system being worked on will be used. In addition, a live work permit including a hazard analysis is required to be completed with appropriate signatures before any energized work is performed See SD1063 for Cianbro Energized Electrical Work Permit available on Cianbro.net>Standard Operating Procedures SOP. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 8

9 Table 130.7(C)(9) Hazard/Risk Category Classifications Task Performed on Energized Equipment Hazard/Risk Category Voltage Rated Gloves Insulated Hand Tools Panelboards or Other Equipment Rated 240 V and Below - Note 1 Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 0 N N Circuit breaker (CB) or fused switch operation with covers on 0 N N CB or fused switch operation with covers off 0 N N Work on energized electrical conductors and circuit parts, including voltage testing 1 Y Y Remove/Install CB's or fused switches 1 Y Y Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 1 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 0 N N Work on energized electrical conductors and circuit parts of utilization equipment fed directly by a branch circuit of the panel board 1 Y Y Panelboards or Switchboards Rated >240 V and up to 600 V (with molded case or insulated case circuit breakers) - Note 1 Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 1 N N CB or fused switch operation with covers on 0 N N CB or fused switch operation with covers off 1 Y N Work on energized electrical conductors and circuit parts, including voltage testing 2* Y Y Work on energized electrical conductors and circuit parts of utilization equipment fed directly by a branch circuit of the panel board 2* Y Y 600 V Class Motor Control Centers (MCC's) Note-2 except as indicated Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 1 N N CB or fused switch operation with enclosure doors closed 0 N N Reading a panel meter while operating a meter switch 0 N N CB or fused switch or starter operation with enclosure doors open 1 N N Work on energized electrical conductors and circuit parts, including voltage testing 2* Y Y Work on control circuits with energized electrical conductors and circuit parts 120 V or below, exposed 0 Y Y Work on control circuits with energized electrical conductors and circuit parts >120 V, exposed 2* Y Y Insertion or removal of individual starter "buckets" from MCC - Note 3 4 Y N Application of safety grounds, after voltage test 2* Y N Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) - Note 3 4 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) - Note 3 1 N N Work on energized electrical conductors and circuit parts of utilization equipment fed directly by a branch circuit of the motor control center 2* Y Y Policy: 020 Electrical Safety and Rev. 06/03/11 Page 9

10 600 V Class Switchgear (with power circuit breakers or fused switches) - Note 4 Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 2 N N CB or fused switch operation with enclosure doors closed 0 N N Reading a panel meter while operating a meter switch 0 N N CB or fused switch operation with enclosure doors open 1 N N Work on energized electrical conductors and circuit parts, including voltage testing 2* Y Y Work on control circuits with energized electrical conductors and circuit parts 120 V or below, exposed 0 Y Y Work on control circuits with energized electrical conductors and circuit parts >120 V, exposed 2* Y Y Insertion or removal of CB's from cubicles,doors open or closed 4 N N Application of safety grounds, after voltage test 2* Y N Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 4 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 2 N N NFPA 70E TABLE (C) (9) Hazard/Risk Category Classifications Task Performed on Hazard/Risk Voltage Insulated Energized Equipment Category Rated Gloves Hand Tools Other 600 v Class (277 V through 600 V, nominal) Equipment - Note 2 (except as indicated) Lighting or small power transformers (600 V, maximum) Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 2* N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 1 N N Work on energized electrical conductors and circuit parts, including voltage testing 2* Y Y Application of safety grounds, after voltage test 2* Y N Revenue meters (kw-hour, at primary voltage and current) Insertion or removal 2* Y N Cable trough or tray cover removal or installation 1 N N Miscellaneous equipment cover removal or installation 1 N N Insertion or removal of plug-in devices into or from busways 2* Y N Arc-Resistant Switchgear Type 1 or 2 (for clearing times of < 0.5 sec with a perspective fault current not to exceed the arc resistant rating of the equipment) CB operation with enclosure door closed 0 N N Insertion or removal (racking) of CB's from cubicles,doors closed 0 N N Insertion or removal of CB's from cubicles, door open 4 N N Work on control circuits with energized electrical conductors and circuit parts 120 V or below, exposed 2 Y Y Insertion or removal (racking) of ground and test device with door closed 0 N N Insertion or removal (racking) of voltage transformers on or off the bus door closed 0 N N NEMA E2 (fused contactor) Motor Starters, 2.3kV Through 7.2 kv Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 3 N N Contactor operation with enclosure doors closed 0 N N Reading a panel meter while operating a meter switch 0 N N Contactor operation with enclosure doors open 2* N N Policy: 020 Electrical Safety and Rev. 06/03/11 Page 10

11 Work on energized electrical conductors and circuit parts, including voltage testing 4 Y Y Work on control circuits with energized electrical conductors and circuit parts 120 V or below, exposed 0 Y Y Work on control circuits with energized electrical conductors and circuit parts >120 V, exposed 3 Y Y Insertion or removal (racking) of starters from cubicles, doors open or closed 4 N N Application of safety grounds, after voltage test 3 Y N Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 4 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 3 N N Insertion or removal (racking) of starters from cubicles, of arc-resistant construction, tested in accordance with IEEE C , doors closed only 0 N N NFPA 70E TABLE (C) (9) Hazard/Risk Category Classifications Task Performed on Hazard/Risk Voltage Insulated Energized Equipment Category Rated Gloves Hand Tools Metal Clad Switchgear, 1 kv through 38 kv Perform Infrared Thermography and other non-contact inspections outside the restricted approach boundary 3 N N CB operation with enclosure doors closed 2 N N Reading a panel meter while operating a meter switch 0 N N CB operation with enclosure doors open 4 N N Work on energized electrical conductors and circuit parts, including voltage testing 4 Y Y Work on control circuits with energized electrical conductors and circuit parts 120 V or below, exposed 2 Y Y Work on control circuits with energized electrical conductors and circuit parts >120 V, exposed 4 Y Y Insertion or removal (racking) of CB's from cubicles, doors open or closed 4 N N Application of safety grounds, after voltage test 4 Y N Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 4 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 3 N N Opening voltage transformer or control power transformer compartments 4 N N Other Equipment 1 kv Through 38 kv Metal - enclosed interrupter switchgear, fused or un-fused Switch operation of are-resistant-type construction, tested in accordance with IEEE C , doors closed only 0 N N Switch operation, doors closed 2 N N Work on energized electrical conductors and circuit parts, including voltage testing 4 Y Y Removal of bolted covers (to expose bare, energized electrical conductors and circuit parts) 4 N N Opening hinged covers (to expose bare, energized electrical conductors and circuit parts) 3 N N Outdoor disconnect switch operation (hookstick operated) 3 Y Y Outdoor disconnect switch operation (gang-operated, from grade) 2 Y N Insulated cable examination, in manhole or other confined space 4 Y N Insulated cable examination, in open area 2 Y N Policy: 020 Electrical Safety and Rev. 06/03/11 Page 11

12 General Notes (applicable to the entire table): (a) Rubber insulating gloves are gloves rated for the maximum line-to-line voltage upon which work will be done. (b) Insulated and insulating hand tools are tools rated and tested for the maximum line-to-line voltage upon which work will be done, and are manufactured and tested in accordance with ASTM F 1505, Standard Specification for Insulated and Insulating Hand Tools. (c) Y = yes (required), N = no (not required). (d) For systems rated less than 1000 volts, the fault currents and upstream protective device clearing times are based on an 18 in. working distance. (e) For systems rated 1 kv and greater, the Hazard/Risk Categories are based on a 36 in. working distance. (f) For equipment protected by upstream current limiting fuses with arcing fault current in their current limiting range (1/2 cycle fault clearing time or less), the Hazard/Risk Category required may be reduced by one number. Specific Notes (as referenced in the table): 1. Maximum of 25 ka short circuit current available; maximum of 0.03 sec (2 cycles) fault clearing time. 2. Maximum of 65 ka short circuit current available; maximum of 0.03 sec (2 cycles) fault clearing time. 3. Maximum of 42 ka short circuit current available; maximum of 0.33 sec (20 cycles) fault clearing time. 4. Maximum of 35 ka short circuit current available; maximum of up to 0.5 sec (30 cycles) fault clearing time Flame Retardant Arc Rated Garments A. Team members working on energized electrical equipment or circuits, or exposed to the hazards of an electrical arc flash, shall wear long sleeved flame retardant shirt, pants and/or outer garment designed to meet the requirements of the Cianbro Flash Protection Matrix and NFPA 70E Table 130.7(C) (10) Protective Clothing and Personal Protective Equipment (PPE) Matrix. B. Proper Inspection, Use, and Care of FR Arc Rated Garments Arc Rated clothing is intended to be used while team members are within the Arc Flash/Blast boundary, and not as a part of their daily working attire unless otherwise specified. This clothing is to be purchased and maintained by Cianbro. Proper inspection and use is the responsibility of the user. 1. Inspection: Inspect the garment thoroughly for cleanliness Be sure there are no stains in garment as this could indicate the presence of contaminants. Check for embedded foreign materials or foreign fibers. Inspect for excessive wear, or torn fabric before each use. Look for signs of repair such as stitches, patches etc. Check hood shield or face shield for damage and for excessive scratches which could limit visibility. Do not use the garment if it does not pass inspection. 2. Use: Be sure to fasten all closures to eliminate the possibility of skin exposure to an Arc event. Be sure to use the correct Arc Rated garment for the task, as per NFPA 70E requirements. Take care not to snag or tear the fabric, as it cannot be repaired by conventional means. The integrity of the garment will be jeopardized by repairs with inferior materials. If damaged remove it from service. If garment is exposed to an arc event, remove it from service. Take care not to expose the garment to oils and grease which could be absorbed into the fabric, causing it to burn if involved in an arc event. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 12

13 3. Care and Cleaning: Follow manufacturer s recommendations for proper care and cleaning. Be sure that the garment is washed after using. Hygiene can become an issue when garments are shared by team members. Do not wash Arc Rated garments with other garments, as this can cause foreign material to become embedded in the Arc Rated fabric. Do not use fabric softeners, or bleach while cleaning these garments. Store the garments in a clean container, and in a safe location. Be sure to protect face shields from scratches and other damage while storing them When exposed to electrical hazards, team members shall not wear conductive articles such as key or watch chains, rings, wristbands, necklaces or other jewelry, or belt buckles which could come into contact with live parts unless such articles are covered to prevent contact Team members whose job classification may require them to work on, or be exposed to, energized equipment or circuits and wear flame retardant garments shall be prepared to do so. The team member should not need to leave the job site to change clothing in order to be in compliance. Flame retardant coveralls, suits, or other garments, where warranted, shall be added over acceptable cotton or other natural fiber work clothing at the job site Shock arc flash boundaries shall be delineated and marked by red barricade tape with appropriate information tags Flash Protection Matrix A. The intent of the Flash Protection Matrix is to specify the minimum necessary clothing and personal protective equipment to be worn while working on or near energized electrical equipment within the flash protection boundary. (per NFPA 70E Table 130.7(C)(10) Protective Clothing and Personal Protective Equipment (PPE) B. Hazard/Risk 4 work should not be undertaken due to the extreme nature of forces which would be present should there be an electrical explosion. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 13

14 Table 130.7(C)(10) Protective Clothing and Personal Protective Equipment (PPE) Hazard/Risk Category Hazard/Risk Category 0 Protective clothing, Nonmelting (according to ASTM F ) or untreated natural fiber FR protective equipment Protective Clothing and PPE Shirt (long sleeve) Pants (long) Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (AN) (note 2) Hazard/Risk Category 1 FR clothing, minimum arc rating of 4 (note 1) Arc-rated long-sleeve shirt (note 3) Arc-rated pants (note 3) Arc-rated coverall (note 4) Arc-rated face shield or arc flash suit hood (note 7) Arc-rated jacket, parka or rainwear (AN) FR protective equipment Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (note 2) Leather work shoes (AN) Hazard/Risk Category 2 FR clothing, minimum arc rating of 8 (note 1) Arc-rated long-sleeve shirt (note 5) Arc-rated pants (note 5) Arc-rated coverall (note 6) Arc-rated face shield or arc flash suit hood (note 7) Arc-rated jacket, parka or rainwear (AN) FR protective equipment Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (note 2) Leather work shoes Hazard/Risk Category 2* FR clothing, minimum arc rating of 8 (note 1) Arc-rated long-sleeve shirt (note 5) Arc-rated pants (note 5) Arc-rated coverall (note 6) Arc-rated arc flash suit hood (note 10) Arc-rated jacket, parka or rainwear (AN) FR protective equipment Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (note 2) Leather work shoes Hazard/Risk Category 3 FR clothing, minimum arc rating of 25 (note 1) Arc-rated long-sleeve shirt (AR) (note 8) Arc-rated pants (AR) (note 8) Arc-rated coverall (AR) (note 8) Arc-rated arc flash suit jacket (AR) (note 8) Arc-rated arc flash suit pants (AR) (note 8) Arc-rated arc flash suit hood (note 8) Arc-rated jacket, parka or rainwear (AN) Policy: 020 Electrical Safety and Rev. 06/03/11 Page 14

15 FR protective equipment Hard hat FR hard hat liner (AR) Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Arc-rated gloves (note 2) Leather work shoes Hazard/Risk Category 4 FR clothing, minimum arc rating of 40 (note 1) Arc-rated long-sleeve shirt (AR) (note 9) Arc-rated pants (AR) (note 9) Arc-rated coverall (AR) (note 9) Arc-rated arc flash suit jacket (AR) (note 9) Arc-rated arc flash suit pants (AR) (note 9) Arc-rated arc flash suit hood (note 9) Arc-rated jacket, parka or rainwear (AN) FR protective equipment Hard hat FR hard hat liner (AR) Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Arc-rated gloves (note 2) Leather work shoes AN = As needed (optional) AR = As required SR = Selection required Notes: 1. See Table 130.7(C) (11). Arc rating for a garment or system of garments is expressed in cal/cm². 2. If rubber insulating gloves with leather protectors are required by Table 130.7(C) (9), additional leather or arc-rated gloves are not required. The combination of rubber insulating gloves with leather protectors satisfies the arc flash protection requirement. 3. The FR shirt and pants used for Hazard/Risk Category 1 shall have a minimum arc rating of Alternate is to use FR coveralls (minimum arc rating of 4) instead of FR shirt and FR pants. 5. FR shirt and FR pants used for Hazard/Risk Category 2 shall have a minimum arc rating of Alternate is to use FR coveralls (minimum arc rating of 8) instead of FR shirt and FR pants. 7. A face shield with a minimum arc rating of 4 for Hazard/Risk Category 1 or a minimum arc rating of 8 for Hazard/Risk Category 2, with wrap-around guarding to protect not only the face but also the forehead, ears and neck (or, alternatively, an arc-rated arc flash suit hood), is required. 8. An alternate is to use a total FR clothing and hood, which shall have a minimum arc rating of 25 for Hazard/Risk Category The total clothing system consisting of FR shirt and pants and/or FR coveralls and/or arc flash coat and pants and hood shall have a minimum arc rating of 40 for Hazard/Risk Category Alternate is to use a face shield with a minimum arc rating of 8 and a balaclava (sock hood) with a minimum arc rating of 8 and which covers the face, head and neck except for the eye and nose areas Fall Protection PPE A Fall protection PPE shall be Arc Flash/Flame resistant rated for the applicable Hazard/Risk category. B. Specific information on products can be obtained from manufacturers such as DBI/SALA-Fall Protection Testing A. Testing requires PPE and tools suitable for the hazard/risk category of the equipment or circuits being tested. B. The proper test instrument must be chosen. Test instruments, equipment, and their accessories will meet the requirements contained in ANSI/ISA Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use Part 1 General Requirements, for rating and design requirements for voltage measurement and test instruments designed for use on electrical systems 1000 volts and below. C. For voltages over 50 volts, the test instrument shall be verified both before and after an absence of voltage test is performed (Live, dead, live test). The person Policy: 020 Electrical Safety and Rev. 06/03/11 Page 15

16 performing the test must be qualified according to the guidelines in 050 Electrical Operations Program Safety Policy and Procedure High Voltage Line Work Refer to 046 Electrical Transmission and Distribution Safety Policy and Procedure Switchyard and Substation Work Refer to 051 Electrical Substations Safety Policy and Procedure Safety At Home OSHA estimates that approximately 1000 electrocutions occur annually in the home. This is around three times the number of electrocutions in the workplace. One of the key contributors is that people are generally complacent when it comes to using electrical appliances and tools at home. They feel they are in a Safe Zone and never give safety a thought. The fact that the use of electrical equipment has increased, combined with the frequent use of equipment by basically untrained people has done much to increase the risk. As construction workers we should strive to set a good example of safety in the home even though we may feel that it is a Safe Zone Following are several examples which could eliminate the possibility of electric shock or electrocution. Use GFCI protection whenever we use electrical equipment outside, near plumbing fixtures, in damp basements, near swimming pools, etc. Test each GFCI device based on the manufacturer s recommendation at a minimum. Understand which outlets are required by the National Electrical Code to be GFCI protected. Take steps to ensure that electrical outlets are protected from contact by children, and explain the hazards to them. Disconnect power when working on any portion of a circuit. Unplug cords when working on tools, equipment, or lights (even when changing a light bulb). Avoid cutting trees that are within reach of a power line. Avoid using aluminum ladders or ariel lifts near power lines. Avoid working near service drops without involving the power company for advise and protection. Determine the location of buried cables prior to digging with a machine or by hand. 8 Budget / Approval Process 8.1 Purchase and maintenance of company supplied tools and equipment is the responsibility of Cianbro Equipment, LLC. 8.2 Fire Retardant Clothing Electricians engaged in normally de-energized installations are not required to furnish FR clothing. Projects will furnish and maintain required FR clothing as needed Electricians, utility line workers and any personnel that work in live substations are subject to the Cianbro Fire Retardant Clothing policy. 8.3 Cost of following this policy is the responsibility of the projects. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 16

17 9 Related Documents 9.1 See attachments 9.2 Documents available on Cianbro.net or Cianbro.net>Standard Operating Procedures - SOP Authorized Electrical Cord Repair Person Requirements SD1070 SOP Authorized Electrical Cord Repair Person Exam SD1068.Net Energized Work Permit SD1063 SOP 9.3 Please Note: Training manual for presenter and student is available on Cianbro.net>Standard Operating Procedures SOP November_Electrical_&_ZES and 11.1 November_Electrical_&_ZES. 9.4 Authorized Electrical Cord Repair Person Exam Answers located on Cianbro.net Resources Safety Resources. Policy: 020 Electrical Safety and Rev. 06/03/11 Page 17

18 9.1 Appendix A Cianbro Wiring Procedures for Portable Cords Cianbro Wiring Procedures For Portable Cords This wiring procedure is to be used with the new style plugs only. This replaces the Safety Policy and Procedure dated Notes: 1. Bryant catalog numbers are for reference only. Blue Box Receptacle/Spider Basket EQUIPMENT GROUND GREEN WIRE EQUIPMENT GROUND GREEN WIRE Neutral White Wire Hot Red Wire Hot Black Wire Hot Black Wire 20 Amp 125V, Gr. NEMA L5-20 BRYANT Receptacle 70520FR Nylon Plug 70520NP Nylon Connector 70520NC Neutral White Wire 30 Amp 125/250V,Gr. NEMA L14-30 BRYANT Receptacle 71430FR Nylon Plug 71430NP Nylon Connector 71430NC EQUIPMENT GROUND GREEN WIRE EQUIPMENT GROUND GREEN WIRE Neutral White Wire Hot Red Wire Hot Black Wire 50 Amp 125/250V, Gr. BRYANT BOOTS Receptacle CS B Nylon Plug CS6365N 7117B Nylon Connector CS6364N Nylon Male Base CS6375N Hot Black Wire Hot Red Wire 50Amp 480V, 3 Phase Gr. BRYANT BOOTS Receptacle B Nylon Plug 3765N 7117B Nylon Connector 3764N Nylon Male Base 3775N Policy: 020 Electrical Safety and Rev. 06/03/11 Page 18