4.8.1 Arrangements for the storage, distribution
and utilization of oil fuel should be such as to ensure the safety
of the unit and persons on board.
4.8.2 Arrangements for the storage, distribution
and utilization of oil used in pressure lubrication systems should
be such as to ensure the safety of the unit and persons on board.
4.8.3 Arrangements for the storage, distribution
and utilization of other flammable oils employed under pressure in
power transmission systems, control and activating systems and heat
transfer systems should be such as to ensure the safety of the unit
and persons on board.
4.8.4 In machinery spaces pipes, fittings and
valves carrying flammable oils should be of a material approved by
the Administration, having regard to the risk of fire.
4.8.5 Location and arrangement of vent pipes for
fuel oil service, settling and lubrication oil tanks should be such
that, in the event of a broken vent pipe, the risk of ingress of rainwater
or seawater is minimized.
4.8.6 Two fuel oil service tanks for each type
of fuel used on board necessary for propulsion and vital systems or
equivalent arrangements should be provided, each with a capacity of
at least eight hours at the maximum continuous rating of the propulsion
plant, if any, and normal operating load of the generator plant.
4.8.7 High pressure fuel delivery lines
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.1 All external high pressure fuel delivery lines
between the high pressure fuel pumps and fuel injectors should be
protected with a jacketed piping system capable of containing fuel
from a high pressure line failure. A jacketed pipe incorporates an
outer pipe into which the high pressure fuel pipe is placed forming
a permanent assembly. The jacketed piping system should include a
means for collection of leakages and arrangements should be provided
for an alarm to be given of a fuel line failure.
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.2 All surfaces with temperatures above 220°C,
which may be impinged as a result of a fuel system failure, should
be properly insulated.
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.3 Oil fuel lines should be screened or otherwise
suitably protected to avoid, as far as practicable, oil spray or oil
leakages onto hot surfaces, into machinery air intakes, or other sources
of ignition. The number of joints in such piping systems should be
kept to a minimum.