Where an enclosed pipe trunk is situated within the cargo
tanks deck area, the pipe trunk:
-
.1 should be protected by a fixed fire-extinguishing
system in accordance with regulation
II-2/10.9. The extinguishing system should be operated from
a readily accessible position outside the pipe trunk;
-
.2 is not considered part of the cargo tanks deck
area;
-
.3 the area of the pipe trunk need not be included
in the calculation of the foam solution rate of supply for the deck
foam system required by regulation
II-2/10.8;
-
.4 should be adequately ventilated and protected
in accordance with regulations II-2/4.5.10.1.2
and II-2/4.5.10.1.3; and
-
.5 should contain no flammable gas sources other
than pipes and flanges. If the pipe trunk contains any other source
of flammable gas, i.e. valves and pumps, it should be regarded as
a cargo pump-room.