(IV-7-3) General Safety

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Rules IV Industrial Services Part 7 Offshore Substations Chapter 3 General Safety Section 7 Passive Fire Protection B.4.4 The integrity of the machinery space or galley boundaries is maintained at the penetrations. Or alternatively: B.4.5 The ducts where they pass through a machinery space of category A or a galley are constructed of steel in accordance with B.3.1. B.4.6 Ducts are insulated to "A-60" standard within the machinery space or galley. B.5 Ducts passing "B" class bulkheads Ventilation ducts with a cross-sectional area exceeding 0.02 m 2 passing through "B" class bulkheads shall be lined with steel sheet sleeves of 900 mm in length divided preferably into 450 mm on each side of the bulkhead unless the duct is of steel for this length. B.6 Ducts from galley ranges Where they pass through accommodation spaces or spaces containing combustible materials, the exhaust ducts from galley ranges shall be of equivalent fire integrity to "A" class divisions. Each such exhaust duct shall be fitted with: • a grease trap readily removable for cleaning • a fire damper located in the lower end of the duct and in addition a fire damper in the upper end of the duct • arrangements, operable from within the galley, for shutting off the exhaust fans, and • fixed means for extinguishing a fire within the duct. B.7 Inlets and outlets The main inlets and outlets of all ventilation systems shall be capable of being closed from outside the spaces being ventilated. B.8 Power ventilation Power ventilation of accommodation spaces, service spaces, control stations, machinery spaces and hazardous areas shall be capable of being stopped from an easily accessible position outside the space being served. The accessibility of this position in the event of a fire in the spaces served shall be specially considered. The means provided for stopping the power ventilation serving machinery spaces or hazardous areas shall be entirely separate from the means provided for stopping ventilation of other spaces. B.9 Accommodation spaces and control stations • The ventilation of the accommodation spaces and control stations shall be arranged in such a way as to prevent the ingress of flammable, toxic or noxious gases or smoke from surrounding areas. Edition 2013 Germanischer Lloyd Page 7–8
Rules IV Industrial Services Part 7 Offshore Technology Chapter 3 General Safety Section 8 Active Fire Protection Section 8 Active Fire Protection A General ....................................................................................................................... 8-1 B Arrangements in Machinery Spaces and Spaces Containing Fired Processes ......... 8-2 C Arrangements in Spaces Containing Large Oil Filled Electrical Equipment............... 8-2 D Additional Requirements for Specific Lockers and Galley Facilities........................... 8-3 E Water Fire Extinguishing Systems.............................................................................. 8-3 F Foam Fire Extinguishing Systems .............................................................................. 8-6 G Fixed Gas Fire Extinguishing Systems ....................................................................... 8-8 H Portable Fire Extinguishers and Fireman's Outfit ..................................................... 8-13 A General A.1 Scope The purpose of fire-fighting system (Active Fire Protection) is to provide quick and reliable means for fighting fires and mitigate explosion effects. They have to be installed in areas where the major fire risk are present. Every offshore installation/unit shall be equipped with a general water fire extinguishing system in accordance with E and with portable and mobile extinguishers as specified in H. For helideck safety requirements incl. firefighting see Section 5, D. A.2 Fire-resistance of components in fixed fire-extinguishing systems Unless otherwise specified in this Section, piping, pipe fittings and related components except gaskets of fixed fire-extinguishing systems inside in the protected spaces shall be designed to withstand a temperature of 925 °C. A.3 Approval of fire-extinguishing appliances and equipment Approvals of Administrations or other Certifying Bodies if applicable to the specific application, are generally accepted for fire-fighting equipment and components such as fire-extinguishers, fire-hoses, foam concentrates, etc. A.4 Codes and standards Following codes and standards shall apply: • IMO – Code for the Construction and Equipment of Mobile Offshore Drilling Units (MODU Code) • SOLAS • IMO -International Code for -Fire Safety System (FSS Code) • ISO 13702 Petroleum and natural gas industries – Control and mitigation of fires and explosions on offshore production installations – Requirements and guidelines • ISO 1776 Petroleum and natural gas industries – Offshore production installations – Guidelines on tools and techniques for hazard identification and risk assessment • other international codes and standards can be agreed, such as VdS, NFPA or others • National Rules to be observed Edition 2013 Germanischer Lloyd Page 8–1
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(IV-7-3) General Safety

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