Hull Construction Regulations

190 (1) Every cargo pump room shall be fitted with a suction type mechanical ventilation system that

• (a) has a capacity sufficient to provide at least 20 air changes per hour based on the gross volume of the space of the room and sufficient to minimize the possibility of flammable vapours accumulating in the room;

• (b) is arranged so as to effectively ventilate the complete space of the room and to permit extraction of air from the vicinity of the pump room bilges immediately above the transverse floor plates or bottom longitudinals;

• (c) has an emergency intake that is

  • (i) placed in the ventilation ducting at a height of approximately 2 m above the lower platform of the room, and

  • (ii) fitted with a fire damper that is capable of being opened and closed from the weather deck or the lower platform of the room;

• (d) provides a means of ensuring a free flow of gases through the lower platform of the room to the ventilation ducting intakes; and

• (e) is constructed and arranged so as to prevent the risk of sparks.

(2) The air, gases and vapours extracted from the cargo pump room by the ventilation system referred to in subsection (1) shall be discharged from the system at a safe place on an open deck.