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77. Restriction of combustible materials
(1) Within accommodation spaces, service spaces and control stations the following provisions shall apply—
(a) the following surfaces shall be such that a Class 1 or 2 surface spread of flame will not be exceeded— (E.R. 3 of 2022)
(i) exposed surfaces in corridor, stairway enclosures, bulkheads, wall and ceiling linings; and
(ii) concealed or inaccessible spaces;
(b) the total volume of combustible facings, mouldings, decorations and veneers shall not exceed a volume equivalent to 2.5 millimetres of veneer on the combined area of walls and ceilings. In the case of ships fitted with an automatic sprinkler system complying with the provisions of Schedule 11 to the Merchant Shipping (Safety) (Fire Appliances) (Ships Built On or After 25 May 1980 but Before 1 September 1984) Regulations (Cap. 369 sub. leg. X), the above volume may include some combustible material used for the erection of “C” Class divisions;
(c) veneers used on surfaces and linings to which subregulation (1)(a) applies shall not have a gross calorific potential exceeding 45 megajoules per square metre of surface area for the thickness used as measured in accordance with International Standard ISO 1716-1973(E);
(d) furniture in the corridors and stairway enclosures shall be kept to a minimum;
(e) primary deck coverings, if applied, shall be of approved material which will not readily ignite or give rise to toxic or explosive hazards at elevated temperatures;
(f) waste-paper receptacles shall be constructed of non-combustible materials and with solid sides and bottoms. (E.R. 3 of 2022)
(2) Within accommodation spaces, service spaces, control stations and machinery spaces the following requirements should be complied with—
(a) all ceilings, linings, draught stops and insulating materials shall be of non-combustible materials except in respect of—
(i) mail rooms and baggage rooms;
(ii) materials used to insulate refrigerated compartments;
(iii) materials used to insulate valves associated with hot and cold service systems if their exposed surfaces are such that a Class 1 or 2 surface spread of flame will not be exceeded;
(iv) vapour barriers and adhesives used in conjunction with insulating materials if their exposed surfaces are such that a Class 1 or 2 surface spread of flame will not be exceeded; and
(b) paints, varnishes and other finishes used on exposed interior surfaces shall not be capable of producing excessive quantities of smoke and toxic products.

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78. Miscellaneous items of fire protection
(1) The following provisions shall apply to all parts of any ship to which this Part applies—
(a) any pipe which penetrates an “A” Class or “B” Class division shall be of suitable material and having regard to the temperature such divisions are required to withstand;
(b) pipes intended for oil or other flammable liquids shall be of suitable material having regard to the risk of fire; and
(c) overboard scuppers, sanitary discharges or other outlets close to or below the waterline shall not be of a material likely to fail in the event of fire and thereby give rise to a danger of flooding.
(2) The following provisions shall apply to the accommodation and service spaces, control stations, corridors and stairways of any ship to which this Part applies—
(a) every air space enclosed behind a ceiling, panel or lining shall be divided by close-fitting draught-stops, which shall be spaced not more than 14 metres apart and which shall be closed at each deck; and
(b) every ceiling panel and lining shall be so constructed as to enable a fire patrol to detect any smoke originating in a concealed or inaccessible space without impairing the efficiency of the fire protection of the ship. The Director may exempt any ship from the requirements of this regulation if he is satisfied that there is no risk of fire originating in such a space.

79. Automatic sprinkler and fire alarm and fire detection system or automatic fire alarm and fire detection system
(1) In every ship to which this Part applies there shall be installed throughout each separate zone, whether vertical or horizontal, in all accommodation and service spaces and in control stations either—
(a) an automatic sprinkler and fire alarm and fire detection system complying with the requirements specified in Schedule 11 to the Merchant Shipping (Safety) (Fire Appliances) (Ships Built On or After 25 May 1980 but Before 1 September 1984) Regulations (Cap. 369 sub. leg. X) and so arranged to protect all such spaces in the ship; or
(b) an automatic fire alarm and fire detection system complying with the requirements specified in Schedule 12 to the Merchant Shipping (Safety) (Fire Appliances) (Ships Built On or After 25 May 1980 but Before 1 September 1984) Regulations (Cap. 369 sub. leg. X) and so arranged to detect the presence or the signs of a fire and its location in any such spaces. (E.R. 3 of 2022)
(2) The Director may exempt any ship from the requirements of this regulation in so far as they apply to—
(a) any space which he is satisfied affords no substantial fire risk; or
(b) any control station.

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81. Protection of cargo spaces, other than special category spaces, intended for the carriage of motor vehicles with fuel in their tanks for their own propulsion
In every ship to which this Part applies, the following provisions shall apply to any cargo space, other than special category spaces, containing motor vehicles with fuel in their tanks for their own propulsion—
Fire detection
(a) an automatic fire alarm and fire detection system complying with the requirements specified in Schedule 12 to the Merchant Shipping (Safety) (Fire Appliances) (Ships Built On or After 25 May 1980 but Before 1 September 1984) Regulations (Cap. 369 sub. leg. X) shall be provided; (E.R. 3 of 2022)
Fire-extinguishing arrangements
(b) a fixed fire-extinguishing system complying with the requirements specified in Schedule 9 to the Merchant Shipping (Safety) (Fire Appliances) (Ships Built On or After 25 May 1980 but Before 1 September 1984) Regulations (Cap. 369 sub. leg. X) shall be provided; (E.R. 3 of 2022)
Ventilation system
(c) every such space shall be provided with a ventilation system capable of changing the atmosphere within such spaces at least 6 times per hour based upon the gross volume of the space. The ventilation system shall be arranged to prevent stratification of the atmosphere and the formation of gas pockets in such spaces. The ventilating system shall be separate from any other ventilation system and the master shall ensure that it shall be operated at all times when vehicles are in such spaces. Any loss or reduction of the ventilation system capacity shall be indicated on the navigating bridge. The outlet from any exhaust ventilation duct shall be sited in a safe position having regard to possible sources of ignition; and
Precautions against ignition of flammable vapours
(d) electrical equipment and wiring within such spaces and their exhaust ventilation trunks shall be of a type suitable for use in an explosive petrol vapour and air mixture. Other equipment which may constitute a source of ignition of flammable vapours shall not be fitted.