OVERSEAS MARINE CERTIFICATION SERVICES (OMCS)

Transcription

1 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 1 de 8 CARRIAGE OF DANGEROUS GOODS SECTION 1 General 1.1 Surveyors carrying out surveys for the carriage of dangerous goods should be familiar with the applicable provisions of the SOLAS and the IMDG (International Maritime Dangerous Goods) code. 1.2 Compliance with 1974 SOLAS Chapter II-2, Regulation 54 is a mandatory requirement for a ship carrying, or intending to carry, dangerous goods as defined in 1974 SOLAS Chapter VII, Regulation 2, except class 6.2 and 7, and is: a passenger ship constructed on or after 1 September 1984; or a cargo ship of 500 gross tons or over constructed on or after 1 September 1984; or a cargo ship of less than 500 gross tons constructed on or after 1 February All such ships must be issued with a carriage of dangerous goods document of compliance. Ships falling outside these parameters, and ships of countries which have not signed SOLAS 74 will, in many cases wish to comply with Regulation 54, as the port state control of a number of major trading nations require all ships entering their ports to fully comply if dangerous goods are being carried. In such instances the full requirements of 1974 SOLAS Chapter II-2, Regulation 54, as appropriate to the classes of dangerous goods to be carried, must be met. In order to assist the operators carrying cargoes defined in SOLAS Chapter VII, on request, a Document of Compliance may be issued provided the requirements of this section and the Survey Checklist (Form No. DGC-01) are applicable. 1.3 The surveyor should ascertain which of the cargoes are to be carried, by reference to the existing certificate of compliance or owner s instructions. The survey requirements will differ depending upon which cargoes are to be carried. The applicable survey requirements for each cargo are listed in SOLAS. 1.4 The expiry date of any Certificate of Compliance for the carriage of Dangerous Goods should be harmonized with that of the Safety Construction Certificate. 1.5 Every effort must be made to complete the survey in one operation but, if this cannot be achieved due to lack of facilities or other justifiable reason and only items of a minor nature are outstanding, OMCS HO should be advised of the outstanding items. The Certificate of Compliance should not be endorsed until the survey has been entirely completed. At initial/renewal surveys, the validity of the short term certificate issued is to be limited to maximum two months and the certificate is to be marked conditional. 1.6 The initial/renewal survey should be a thorough and complete examination with tests where appropriate. On completion, the equipment should, given adequate routine maintenance, be expected to remain in good condition and working order

2 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 2 de 8 until the next renewal survey. On completion of the survey, short term Document of Compliance may be issued for five months. The List of Cargoes should be included in the Appendix, attached to the certificate. OMCS Head Office will issue the full term certificate after review of the reports. 1.7 Annual Surveys should be held within three (3) months before or three months after the anniversary date of the Certificate of Compliance. Anniversary date means the day and month of each year that corresponds to the expiry date of the Certificate of Compliance. 1.8 For an annual survey, an examination of all the applicable items of equipment should be carried out, together with tests as considered necessary, all to an extent which, in the surveyor's judgment, indicates adequate condition until the next due survey given proper maintenance. The stringency of the survey is to be to the surveyor's satisfaction and in general will depend upon the condition of the equipment. If any shortcomings are noted then the cargoes to which that requirement is applicable cannot be carried and should be removed from the certificate of compliance and the surveyor site report (RPT-01) must be filled. After completion of an Annual Survey, the Certificate of Compliance is to be endorsed. The Certificate of Compliance shall cease to be valid if the Annual Survey is not carried out within the specified period. 1.9 An additional survey shall be held after the repair of a defect or replacement or renewal of equipment that affects the safety of a ship or the completeness of its equipment with respect to the applicable requirements of SOLAS. The Owner/Master of the vessel should report such repairs, replacements or renewals to the organization responsible for the issue of the relevant certificate, in order that an additional survey may be held if considered necessary The purpose of these surveys is to ensure that: (a) the ship and its equipment are maintained to conform to the requirements of 1974 SOLAS Chapter II-2 Regulation 54, and (b) the ship remains fit in all respects to carry those classes of dangerous goods listed on the document of compliance The survey checklist (Form DGC-01) lists all of the requirements of 1974 SOLAS Chapter II-2, Regulation 54. Only those requirements applicable to the classes of dangerous goods, and type of ship/cargo space in which the dangerous goods are to be carried, need be verified It should be confirmed that all of the requirements applicable to a particular cargo are met, and all equipment and arrangements should be confirmed as being found in a satisfactory condition. If any shortcomings are noted then the document of compliance should not be issued and OMCS Head Office should be consulted to advise a revised list of classes of dangerous goods, permitted to be carried.

3 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 3 de For a ship not previously issued with a document of compliance, or one, which is to carry additional classes of dangerous goods, OMCS Head Office will advice the relevant survey instructions. SECTION 2 Survey Requirements 2.1 The survey requirements vary depending on the cargo/cargoes carried. The survey carried out should ensure that the applicable requirements for the cargo/cargoes are met. 2.2 The Owner s representative should confirm that no unapproved modifications have been carried out or new equipment installed, which would affect the validity of the Document of Compliance for Ships Carrying Dangerous Goods 2.3 The Surveyor should verify the validity of the existing Document of Compliance and other Statutory Certificates and the Class Certificate at the time of survey? 2.4 Water supplies: If permanent pressurization is not a feature, then suitably placed remote starting arrangements for the fire pumps should be verified and tested. Immediate availability of water supply can be achieved either by automatic start of at least one fire pump or by remote starting from the navigation bridge of at least one fire pump. If the pump starts automatically or if the bottom valve cannot be opened from where the pump is remotely started, the bottom valve should always be kept open. Surveyors should verify the arrangement to provide four jets of water to be trained on any part of the cargo space when empty unless equivalent means are provided. The total required capacity of the water supply should satisfy Ch II-2, Regulations and (if applicable), simultaneously calculated for the largest designated cargo space. The capacity requirement for Ch II-2, Regulation should be met by the total capacity of the main fire pump(s) not including the capacity of the emergency fire pump, if fitted. If a drencher system is used to satisfy Ch II-2, Regulation , the drencher pump should also be taken into account in this total capacity. For water spraying systems, Surveyors should check the condition of the pipe work and ensure that all valves operate freely. The pump should be run and, in turn, each section of the system should be operated for a short period to check that the system operates satisfactorily and that there are no obstructions in the piping or nozzles. It is recommended that the piping up to the sectional control valves be tested to 1½ times the working pressure of the system at intervals of 10 years. For a fixed arrangement of spraying nozzles, the quantity of water is not to be less than 5 litres/minute per square meter of the horizontal area of cargo spaces. The amount of water required for fire-fighting purposes in the largest hold should allow simultaneous use of the water spray system plus four jets of water from the hose nozzles. 2.5 Detection System (Ch II-2/54.2.3): Surveyors should check initially the operation of the visual and audible fault signal which should be initiated by a power supply

4 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 4 de 8 failure or fault condition in the electrical circuits. Surveyors should also check initially the activation of 10 per cent of detector heads, randomly selected, by producing hot air at the appropriate temperature, or smoke or aerosol particles having the appropriate range of density or particle size or other phenomena associated with incipient fires to which the detector is designed to respond. An indication of the activated detector head is to be given, both visually and audibly, at the control panel and indicating units. If the signals have not received attention within two minutes, an audible alarm is to automatically sound throughout the crew accommodation and service spaces, control stations and machinery spaces of Category A'. The Surveyor may test more than 10 per cent of detector heads, should this be considered necessary. The total number of heads tested to be to the Surveyor s discretion and satisfaction. The operation of all manually operated fire-alarm call points and their indication at the control panel is to be tested. Clear information is to be displayed on or adjacent to each control panel indicating the spaces covered and the location of the system sections. Information should be in the language or languages stipulated by the National Administration and are understood by the crew. If the system serving the cargo spaces is of the sample extraction smoke detection type which utilizes either dedicated or CO 2 distribution piping, it should be checked by ensuring that smoke from the various compartments can be detected visually, or by the initiation of a visual and audible signal. Where a sample extraction smoke detection system is fitted, provision should be made to discharge samples from the detection system to the open air at a safe location. Where samples may be toxic, a notice is to be permanently displayed at the equipment. 2.6 Ventilation (Ch II-2/54.2.4): The ventilation system should be tested and the correct number of air changes verified (where provided). Protection screens of not more than 13 mm square mesh are to be fitted in the inlet and outlet of ventilation ducts. The purpose of suitable wire mesh guards is to prevent foreign objects from entering into the fan casing. If adjacent spaces are not separated from cargo spaces by gastight bulkheads or decks, ventilation requirements should apply as for the cargo space itself, required under Ch II-2, Regulation and its interpretations. Where 2 fans per hold are required in the BC Code, a common ventilation system with 2 fans connected is acceptable. Requirements for individual cargoes: 1. Cargoes liable to give off vapors or gases, which can form an explosive mixture with air (see the BC Code, Appendix B, e.g. IMO Class 4.3 materials): Two separate fans should be permanently fitted or, being of a portable type, adapted for being permanently fitted prior to loading and during the voyage. The fans should be either explosion proof or arranged such that the escaping gas flow is separated from electrical cables and components. The total ventilation should be at least six air changes per hour, based upon the empty space. Ventilation should be such that any escaping gases cannot reach living spaces on or under deck. Mechanical ventilation arranged for continuous operation, i.e. height of ventilation inlets and outlets, must satisfy the requirements of the Load Line

5 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 5 de 8 Convention for openings not fitted with means of closure. Means of closure for fire protection purposes as required by Regulation II-2/16.9 must be fitted. 2. Cargoes liable to spontaneous combustion (only applicable to seed cake (b) and (c)): Two separate fans should be permanently fitted or, being of a portable type, adapted for being permanently fitted prior to loading and during the voyage. The fans should be either explosion proof or arranged such that the escaping gas flow is separated from electrical cables and components. The total ventilation should be at least six air changes per hour, based upon the empty space. Ventilation should be such that any escaping gases cannot reach living spaces on or under deck. Mechanical ventilation arranged for continuous operation, i.e. height of ventilation inlets and outlets, must satisfy the requirements of the Load Line Convention for openings not fitted with means of closure. Means of closure for fire protection purposes as required by Regulation II-2/16.9 must be fitted. 3. For the carriage of Sulphur only: Mechanical ventilation arranged for intermittent operation, i.e. height of ventilation inlets and outlets, must satisfy the requirements of the Load Line Convention for openings fitted with means of closure. The fan(s) may be of portable type with a capacity sufficient to provide adequate dust removal by at least 2 air changes per hour based on the empty hold volume. 4. For open-top container ships: Power ventilation should be required only for the lower part of the cargo hold for which purpose ducting is required. The ventilation capacity should be at least two air changes per hour, based on the empty hold volume below the weather deck 2.7 Bilge pumping (Ch II-2/54.2.5): If bilge drainage of cargo spaces is arranged by gravity drainage, the drainage should either lead directly overboard or to a closed drain tank located outside of the machinery spaces. The tank should be provided with a vent pipe to a safe location on the open deck. Enclosed spaces outside of machinery spaces containing bilge pumps serving cargo spaces intended for carriage of flammable or toxic liquids should be fitted with separate mechanical ventilation giving at least 6 air changes per hour. If the space has access from another enclosed space, the door is to be self-closing. Drainage from a cargo space into bilge wells in a lower space is only permitted if that space satisfies the same requirements as the cargo space above. 1. Cargo spaces intended for carriage of flammable liquids with flash points less than 23ºC or toxic liquids shall be fitted with a fixed bilge drainage system independent or separated from the bilge system in the machinery space and located outside of the machinery space. If a single bilge drainage system completely independent of the machinery space is provided, the system is to comply with the Rule requirement to redundancy and capacity based on the size of the space or spaces, which it serves. This system will deal with leakages of dangerous cargo or any other flooding contingency.

6 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 6 de 8 2. If the bilge drainage system for cargo spaces is additional to the system served by pumps in the machinery space, the capacity of the system is to be not less than 10 m³/h per cargo space served. If the additional system is a common system serving more than one cargo space, the capacity need not exceed 25 m³/h. The additional bilge system need not be arranged with redundancy. 3. Whenever flammable liquids with a flash point less than 23ºC or toxic liquids are carried, the bilge line into the machinery space should be isolated either by fitting a blank flange or by a closed lockable valve, such that the bilge pumps in the machinery space may come into service for hold pumping duties on removal of the blank or unlocking the valve. The blank flanges or lockable valves are usually fitted at the machinery space bulkhead where individual bilge suction lines are led in the machinery space. 2.8 Personnel protection (Ch II-2/54.2.6): Surveyors should verify that at least four sets of chemical resistant (according to the class and liquid or gaseous state of the goods carried - not all protective clothing is resistant to all dangerous goods and, therefore, the manufacturers recommendations on suitability of clothing for use with particular substances should be obtained. Other materials of reasonable thickness do, however, afford a fair degree of protection, even if the material itself may be attacked by the dangerous substance. ) Protective clothing and two self-contained breathing apparatuses are provided in addition to the normal safety equipment requirements. Protective clothing should be examined for cracking or general deterioration of the material. For each of the breathing apparatuses, two complete sets of air bottles are required, i.e. 2 x 1200 litres of compressed air for each breathing apparatus. These spare bottles are to be in addition to the spare bottles required for fireman s outfits. 2.9 Portable fire extinguishers (Ch II-2/54.2.7): The requirement is applicable to the ship as a whole; additional extinguishers are not required for each cargo hold Insulation of machinery space boundaries (Ch II-2/54.2.8): In the case that a closed or semi-closed cargo space is located partly above a machinery space and the deck above the machinery space is not insulated, dangerous goods are prohibited in the whole of that cargo space. If the un-insulated deck above the machinery space is a weather deck, dangerous goods are prohibited only for the portion of the deck located above the machinery space Space Type Definitions: The space Types listed in the Document of Compliance refer to the following types of cargo space in which dangerous goods may be carried: 1 Ships and cargo spaces not specifically designed for the carriage of freight containers but intended for the carriage of dangerous goods in packaged form including goods in freight containers and portable tanks.

7 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 7 de 8 2A Purpose-built container ships and cargo spaces intended for the carriage of dangerous goods in freight containers and portable tanks (Open and closed freight containers). 2B Purpose-built container ships and cargo spaces intended for the carriage of dangerous goods in freight containers and portable tanks (Closed freight containers and portable tanks only). 3A Ro-ro ships and ro-ro cargo spaces intended for the carriage of dangerous goods (Closed ro-ro cargo spaces not capable of being sealed). 3B Ro-ro ships and ro-ro cargo spaces intended for the carriage of dangerous goods (Closed ro-ro cargo spaces capable of being sealed). 3C Ro-ro ships and ro-ro cargo spaces intended for the carriage of dangerous goods (Open ro-ro cargo spaces). 4 Ships and cargo spaces intended for the carriage of solid dangerous goods in bulk. 5 Ships and cargo spaces intended for the carriage of dangerous goods other than liquids and gases in bulk in shipborne barges. 6 Weather decks, space types 1 to 5 inclusive General Notes (a) Goods of Class 1 should not be stowed within a horizontal distance of 6 meters from any fire, machinery exhausts, galley uptakes, lockers used for combustible stores or other potential sources of ignition and not less than a horizontal distance of 8 meters from the bridge, living quarters and life saving appliances. (b) When Dangerous Goods of Classes 2.1, 2.3, 3.1, 3.2, 4, 5.1, 6.1(B), 6.1(C), 6.1(D), 8(B) and 8(C) are carried under deck, they are to be carried in closed freight containers only. (c) As an alternative to the insulation of bulkheads forming boundaries between cargo spaces and machinery spaces of category A to A-60 standard, all dangerous goods must be stowed at least 3 meters horizontally from such bulkheads. If the uninsulated deck above the machinery space is a weather deck, dangerous goods are prohibited only for the portion of the deck located above the machinery space. (d) Stowage and segregation of freight containers of different classes of dangerous goods in the hold and on the upper deck in compliance with the applicable requirements of the IMDG code remain the responsibility of the Master. (e) The Special Requirements for each product, as stated in the Code of Safe Practice for Solid Bulk Cargoes (BC Code), should also be complied with. (f) There are no special requirements in Regulation II-2/54 for the carriage of dangerous goods of classes 6.2 and 7, or for the carriage of dangerous goods in limited quantities as defined in section 18 of the General Introduction to the IMDG Code. (g) Prior to the carriage of any Class of Dangerous Goods, a fixed gas fire-extinguishing system must be provided, in accordance with 1974 SOLAS Chapter II-2, Regulation SECTION 3 Reporting

8 SURVEYOR S MANUAL - STATUTORY TD-SP-DGC Page. 8 de The relevant survey checklist Form DGC-01 should be used when carrying out surveys and relevant portions of the checklist is to be filled as applicable for the types of cargoes to be carried (and indicated on the certificate). A copy submitted to OMCS Head Office along with survey reports. 3.2 At first surveys by OMCS, copies of the previous society s certificates along with the list of cargoes to be carried out and list of any outstanding deficiencies, recommendations etc should also be forwarded. 3.3 On completion of renewal surveys or First Survey by Overseas Marine Certification Services (OMCS), an SHORT TERM certificate should be issued, valid for five (5) months. 3.4 On completion of other surveys (annual and intermediate), the existing full term certificate on board is to be endorsed in the relevant column indicating the date, place and surveyors name and endorsed using the OMCS seal/stamp. A copy of the endorsed certificate must be submitted to OMCS Head Office. If the surveyor finds any deficiencies and these are not corrected during surveys, the specific cargoes to which the deficiency relates to must be deleted from the certificate under cover of office stamp, signed and dated by the surveyor. A copy of the amended certificate must be submitted to OMCS Head Office. 3.5 If the owner requests for a change in the list of cargoes to be carried (to carry a cargo which is not covered in the certificate), a survey must be carried out to ensure that the additional requirements, if any, for that specific cargo / cargoes are complied with. If found satisfactory, the additional cargoes may be listed in the existing certificate under cover of the OMCS stamp and signed and dated by the attending surveyor. A copy of the amended certificate and the survey checklist Form No. DGC-01 duly filled up as applicable for the additional cargo/cargoes is to be submitted to OMCS Head Office.