Hull Construction Regulations

61 (1) If any “A” Class division is pierced for the passage of electric cables, pipes, trunkways, girders or beams, or for other purposes, the arrangements shall be such that the effectiveness of the division in resisting fire is not thereby impaired.

(2) Where a trunkway passes through an “A” Class division,

• (a) an automatic-closing fusible link fire damper shall be fitted adjacent to the division, the fusible link being located within the trunkway;

• (b) the damper shall be capable of being manually operated from both sides of the division and the operating positions shall be readily accessible and permanently marked in red;

• (c) indicators shall be fitted to show whether the damper is open or shut; and

• (d) the trunkway between the damper and the division shall be as effective as the division in resisting fire.

(3) Any opening in a division shall be provided with means of closure permanently attached to the division and the means of closure shall be as effective as the division in resisting fire.

(4) Any door in “A” Class division shall be of an approved type and shall be so constructed that it can be opened and closed by one person from either side of the division and the door and the means of keeping it closed shall be as effective as the division in resisting fire, except that a watertight door shall not be required to be insulated.