(IV-7-3) General Safety

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Rules IV Industrial Services Part 7 Offshore Substations Chapter 3 General Safety Section 6 Fire Safety - General 2. separation of accommodation spaces from the remainder of the unit by thermal and structural boundaries; 3. restricted use of combustible materials; 4. detection of any fire in the zone of origin; 5. containment and extinction of any fire in the zone of origin; 6. protection of means of escape and access for fire-fighting; 7. ready availability of fire-extinguishing appliances; B Fire Control Stations B.1 Arrangement At least one control station, which is to be permanently manned or remote controlled, shall be provided in the safe area. Depending on the design of the offshore installation or unit, a second control station may be required. The arrangement of the control station(s) is to be determined from case to case. B.2 Equipment In the control station with the central fire alarm consoles the following items shall be provided: a) Means of communication between the stations essential to the safety of the installation/unit; b) arrangements for starting the fire pumps; c) manual means to set off the general and fire alarms; d) means of indicating whether fire doors are closed; e) the fire alarm central consoles, lists and location plans/tables of fire detectors and the control plans; f) the electric and electronic equipment as defined in GL Rules for Instrumentation (IV-7-6), Section 9, C C Fire Control Plans A fire control plan to be submitted with following details: • control systems and stations • fire sections for “A” and “B” class divisions boundaries of fire areas • fire detectors and manual call points • fire detection system • fire alarm sounders, e.g. bells, loud speakers, etc. • fixed fire systems including release stations for accommodation, boiler and/or engine rooms, lockers, work shop, etc. • portable fire extinguishing appliances • ventilation systems with dampers, control stations for fans, stopping of forced ventilation and closing appliances for inlets and outlets • emergency escape breathing devices (EEBD) • fire pumps (main and emergency), fire main, hydrants, hoses and nozzles • remote stop of fuel pumps and quick closing valves for fuel tanks • locations of fire control plans • remote closures of fire doors, if required Additionally following drawings required: Edition 2013 Germanischer Lloyd Page 6–2
Rules IV Industrial Services Part 7 Offshore Substations Chapter 3 General Safety Section 6 Fire Safety - General • general arrangement with all levels of the installation/unit indicating the purpose of each area or room and the arrangements of machinery and equipment • categories of fire sections horizontally and vertically including typical details of each category D Definitions D.1 Non-combustible material Non-combustible material means a material which neither burns nor gives off flammable vapours insufficient quantity for self-ignition when heated to approximately 750 °C, this being determined to the satisfaction of GL by an established test procedure. Reference is made to the Fire Test Procedure Code, Annex 1, Part 1 adopted by IMO by Resolution MSC.307(88). Any other material is a combustible material. D.2 Standard fire test A standard fire test is a test in which specimens of the relevant bulkheads or decks are exposed, in a test furnace, to temperatures corresponding approximately to the standard time-temperature curve. Reference is made to the 2010 Fire Test Procedure Code (FTP Code). D.3 "A" class divisions "A" class divisions are divisions formed by bulkheads and decks which comply with the following requirements. D.3.1 D.3.2 "A" class divisions shall be constructed of steel or other equivalent material. "A" class divisions shall be suitably stiffened. D.3.3 "A" class divisions shall be so constructed as to be capable of preventing the passage of smoke and flames to the end of the one-hour standard fire test. D.3.4 "A" class divisions shall be insulated with approved non-combustible materials such that the average temperature of the unexposed side will not rise more than 140 °C as per FTP Code above the original temperature, nor will the temperature, at any one point, including any joint, rise more than 180 °C above the original temperature within the time listed below: Class "A-60" 60 minutes Class "A-30" 30 minutes Class "A-15" 15 minutes Class "A-0" 0 minutes D.4 "B" class divisions "B" class divisions are divisions formed by bulkheads, decks, ceilings or linings which comply with the following requirements. D.4.1 "B" class divisions shall be so constructed as to be capable of preventing the passage of flames until the end of the first half of the standard fire test. Reference is made to the 2010 Fire Test Procedure Code. D.4.2 "B" class divisions shall have an insulation value such that the average temperature of the unexposed side will not rise more than 140 °C above the original temperature, nor will the temperature at any one point, including any joint, rise more than 225 °C above the original temperature, within the time listed below: Class "B-15" 15 minutes Class "B-0" 0 minutes Edition 2013 Germanischer Lloyd Page 6–3
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(IV-7-3) General Safety

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