5.1.2 Tanks
for the storage of such fuel oil are to be located outside any machinery
space and at a distance of not less than 760 mm inboard from the shell
and bottom plating, and from decks and bulkheads.
5.1.3 The spaces
in which fuel oil tanks are located are to be mechanically ventilated
using exhaust fans providing not less than six air changes per hour.
The fans are to be such as to avoid the possibility of ignition of
flammable gas air mixtures. Suitable wire mesh guards are to be fitted
over inlet and outlet ventilation openings. The outlets for such exhausts
are to discharge to a safe position.
5.1.4 A fixed
vapour detection system is to be installed in each space through which
fuel oil lines pass, with alarms provided at a continuously manned
control station.
5.1.5 Safe and
efficient means of ascertaining the amount of fuel oil contained in
any tank is to be provided. Gauge glasses are not to be used. Other
means of ascertaining the amount of fuel oil contained in any tank
may be permitted if such means do not require penetration below the
top of the tank, and providing their failure or overfilling of the
tanks will not permit the release of fuel oil.
5.1.6 Vessel
to shore fuel oil connections are to be of closed type and suitably
grounded during bunkering operations.