Hull Construction Regulations (C.R.C., c. 1431)

• 149. (1) Every bulkhead required by Table I to section 148 to have a ‘B-0’ Class fire rating shall extend from deck to deck and to the shell or other boundaries unless the bulkhead terminates at a continuous ‘B’ Class ceiling or continuous ‘B’ Class lining.

• (2) Where the external boundaries of the main hull and superstructures required by subsection 146(1) to be constructed of steel or an equivalent material are not required to have an ‘A’ Class fire rating, those external boundaries may be pierced for the fitting of doors, windows and sidescuttles.

• (3) To avoid the risk of heat transmission at intersections and terminal points of thermal barriers, the insulation of the bulkhead or deck having the higher fire rating shall be extended at least

  • (a) 380 mm beyond the intersection or terminal point if the bulkhead or deck is constructed of steel; or

  • (b) 450 mm beyond the intersection or terminal point if the bulkhead or deck is constructed of aluminum.

• 150. (1) All linings, ceilings, draught stops and associated grounds in accommodation spaces, service spaces and control stations shall be made of non-combustible materials.

• (2) Subject to subsections (3) and (4), all insulation shall be composed of non-combustible materials.

• (3) Insulation in cargo spaces or refrigerated compartments of service spaces may be composed of combustible materials.

• (4) Vapour barriers, adhesives used in conjunction with insulation and insulation on pipe fittings for cold service systems may be made of combustible materials if they are kept to the minimum quantity practicable and their exposed surfaces have low flame spread characteristics.

• 151. (1) Subject to subsection (2), no non-combustible bulkhead, lining or ceiling fitted in an accommodation space or service space shall have a combustible veneer exceeding 2 mm in thickness.

• (2) No non-combustible bulkhead, lining or ceiling fitted in a corridor, stairway enclosure or control station shall have a combustible veneer exceeding 1.5 mm in thickness.

152. Every air space enclosed behind a ceiling, panel or lining within an accommodation space, service space or control station shall be

• (a) divided by close fitting draught stops spaced not more than 14 m apart; and

• (b) closed in a vertical direction at each deck.

• 153. (1) All surfaces, including their grounds, in concealed or inaccessible spaces in accommodation spaces, service spaces and control stations, all exposed surfaces in corridors and stairway enclosures and all exposed surfaces of ceilings in accommodation spaces, service spaces and control stations shall have low flame spread characteristics.

• (2) Any paint, varnish or other finish used on an interior surface in an accommodation space, service space, control station or machinery space shall have low flame spread characteristics and shall not produce, when on fire, excessive quantities of smoke or any toxic fumes.

• (3) The surface of the insulation on an interior boundary of a machinery space of Category A shall be impervious to oil and oil vapours.