10.2.1 The provisions of 7.1.2.2 apply to the use of oil as fuel.
10.2.2 Oil fuel, lubricating oil and other flammable
oil lines shall 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 shall be kept to a minimum. Flexible
pipes carrying flammable liquids shall be of an approved type. footnote
10.2.3 Fuel oil, lubricating oils and other flammable
oils shall not be carried forward of public spaces and crew accommodation.
10.2.4 In a craft in which oil fuel is used, the
arrangements for the storage, distribution and utilisation of the
oil fuel shall be such as to ensure the safety of the craft and persons
on board and shall at least comply with the following provisions.
10.2.4.1 As far as practicable, all parts of the
oil fuel system containing heated oil under pressure exceeding 0.18
N/mm2shall not be placed in a concealed position such that
defects and leakage cannot readily be observed. The machinery spaces
in way of such parts of the oil fuel system shall be adequately illuminated.
10.2.4.2 The ventilation of machinery spaces shall
be sufficient under all normal conditions to prevent accumulation
of oil vapour.
10.2.4.3 Location of fuel tanks shall be in accordance
with 7.5.2.
10.2.4.4 No oil fuel tank shall be situated where
spillage or leakage therefrom can constitute a hazard by falling on
heated surfaces. Reference is made to the fire safety requirements
in 7.5.
10.2.4.5 Oil fuel pipes shall be fitted with cocks
or valves in accordance with 7.5.3.
10.2.4.6 Every fuel tank shall, where necessary,
be provided with savealls or gutters to catch any fuel which may leak
from such tanks.
10.2.4.7 Safe and efficient means of ascertaining
the amount of oil fuel contained in any oil fuel tank shall be provided.
10.2.4.7.1 Where surrounding pipes are used, they
shall not terminate in any space where the risk of ignition of spillage
from the sounding pipe might arise. In particular, they shall not
terminate in public spaces, crew accommodation or machinery spaces.
Terminations shall be provided with a suitable means of closure and
provision to prevent spillage during refuelling operations.
10.2.4.7.2 Other oil-level gauges may be used
in place of sounding pipes. Such means are subject to the following
conditions:
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.1 In passenger craft, such means shall not require
penetration below the top of the tank and their failure or overfilling
of the tanks will not permit release of fuel.
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.2 The use of cylindrical gauge glasses shall
be prohibited. In cargo craft, the Administration may permit the use
of oil-level gauges with flat glasses and self-closing valves between
the gauges and fuel tanks. Such other means shall be acceptable to
the Administration and shall be maintained in the proper condition
to ensure their continued accurate functioning in service.
10.2.4.8 Provision shall be made to prevent overpressure
in any oil tank or in any part of the fuel system, including bunkering
pipes and any filling pipes served by on-board pumps. Any relief valves
and air or overflow pipes shall discharge to a safe position where
there is no risk of fire or explosion from the emergence of oils and
vapour, shall not lead into crew spaces, passenger spaces, special
category spaces, ro-ro spaces (other than open ro-ro spaces), machinery
spaces or similar spaces. For fuel of flashpoint less than 43°C
such valves and pipes, shall terminate with flame arresters in accordance
with the standards developed by the Organization.footnote
10.2.4.9 Oil fuel pipes and their valves and fittings
shall be of steel or other approved material,footnote except that restricted use of flexible pipes
shall be permissible in positions where the Administration is satisfied
that they are necessary.footnote Such flexible
pipes and end attachments shall be approved fire-resisting materials
of adequate strength and shall be constructed to the satisfaction
of the Administration.
Lubricating oil arrangements
10.2.5 The arrangements for the storage, distribution
and utilisation of oil used in pressure lubrication systems shall
be such as to ensure the safety of the craft and persons on board.
The arrangements made in machinery spaces and, whenever practicable,
in auxiliary machinery spaces shall at least comply with the provisions
of 10.2.4.1 and 10.2.4.4 to 10.2.4.8 except that:
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.1 this does not preclude the use of sight-flow
glasses in lubricating systems provided they are shown by test to
have a suitable degree of fire resistance;
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.2 sounding pipes may be permitted in machinery
spaces if fitted with appropriate means of closure; and
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.3 lubricating oil storage tanks with a capacity
of less than 500 l may be permitted without remote operated
valves as required in 10.2.4.5.
Arrangements for other flammable oils
10.2.6 The arrangements for storage, distribution
and utilisation of other flammable oil employed under pressure in
power transmission systems, control and activating systems and heating
systems shall be such as to ensure the safety of the craft and persons
on board. In locations where means of ignition are present, such arrangements
shall at least comply with the provisions of 10.2.4.4 and 10.2.4.7
and with the provisions of 10.2.4.8 and 10.2.4.9 in respect of strength
and construction.
Arrangement within machinery spaces
10.2.7 In addition to the requirements of 10.2.1
to 10.2.6, the oil fuel and lubricating oil systems shall comply with
the following:
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.1 Where daily service fuel tanks are filled automatically
or by remote control, means shall be provided to prevent overflow
spillages.
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.2 Other equipment which treats flammable liquids
automatically, such as oil fuel purifiers, which, whenever practicable,
should be installed in a special space reserved for purifiers and
their heaters, shall have arrangements to prevent overflow spillages.
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.3 Where daily service oil fuel tanks or settling
tanks are fitted with heating arrangements, a high-temperature alarm
shall be provided if the flashpoint of the oil can be reached due
to failure of the thermostatic control.