Hull Construction Regulations

158 (1) Every door in an “A” Class division or “B” Class division shall be in accordance with TP 439, Structural Fire Protection Standards: Testing and Approval Procedures, as amended from time to time, and shall have a fire rating that is at least equal to the fire rating of the division in which the door is fitted.

(2) Every door in a machinery space that gives direct access into an accommodation space shall be self-closing and of gas-tight construction.

(3) No door that is required under this Part to be self-closing shall be fitted with a hold-back hook but such doors may be fitted with a hold-back system of a fail-safe type that is capable of being released at the door and from the wheelhouse.

(4) Doors having a ‘B’ Class fire rating fitted in corridor bulkheads may have ventilation openings but stairway enclosure doors shall not have such openings.