9.11.1 Helicopter decks of steel, aluminium or
other non-combustible materials are to be constructed to the satisfaction
of the Administration and should be of at least "A-O" class. as identified
in 1.3.38. Means should be provided
to prevent the collection of liquids on the helicopter deck and to
prevent liquids from spreading to or falling on other parts of the
unit. The Administration may accept an air gap of at least 1 m between
the deckhouse top and the underside of the helicopter deck as an alternative
to the "A-O" requirement. Deckhouse tops directly below helicopter
decks should have no openings.
9.11.2 On any helicopter deck there should be
provided and stored near to the means of access to that deck:
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.1 at least two dry powder extinguishers having
a total capacity of not less than 45 kg;
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.2 a suitable foam application system consisting
of monitors or foam-making branch pipes capable of delivering foam
solution to all parts of the helicopter deck at a rate of not less
than 6⋉/min for at least 5 min for each square metre of the
area contained within a circle of diameter "D", where "D" is the distance
in metres across the main rotor and tail rotor in the fore and aft
line of a helicopter with a single main rotor and across both rotors
for a tandem rotor helicopter. The Administration may accept other
fire-fighting systems which provide a fire-extinguishing capability
at least as effective as the required foam application system;
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.3 carbon dioxide extinguishers of a total capacity
of not less than 18 kg or equivalent, one of these extinguishers being
so equipped as to enable it to reach the engine area of any helicopter
using the deck; and
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.4 at least two dual purpose nozzles and hoses
sufficient to reach any part of the helicopter deck.
9.11.3 A designated area should be provided for
the storage of fuel tanks which should be:
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.1 as remote as is practicable from accommodation
spaces, escape routes and embarkation stations; and
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.2 suitably isolated from areas containing a source
of vapour ignition.
9.11.4 The fuel storage area should be provided
with arrangements whereby fuel spillage may be collected and drained
to a safe location.
9.11.5 Tanks and associated equipment should be
protected against physical damage and from a fire in an adjacent space
or area.
9.11.6 Where portable fuel storage tanks are used,
special attention should be given to:
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.1 design of the tank for its intended purpose;
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.2 mounting and securing arrangements;
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.3 electrical bonding; and
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.4 inspection procedures.
9.11.7 Storage tank fuel pumps should be provided
with means which permit shutdown from a safe remote location in the
event of a fire. Where a gravity fed fuelling system is installed,
equivalent closing arrangements should be provided.
9.11.8 The fuel pumping unit should be connected
to one tank at a time and the piping between the tank and the pumping
unit should be of steel or equivalent material, as short as possible
and protected against damage.
9.11.9 Fire-extinguishing arrangements for protection
of the designated area should be to the satisfaction of the Administration.
9.11.10 Electrical fuel pumping units and associated
control equipment should be of a type suitable for the location and
potential hazard.
9.11.11 Fuel pumping units should incorporate
a device which will prevent overpressurization of the delivery or
filling hose.
9.11.12 The procedures and precautions during
refuelling operations should be in accordance with good recognized
practice.
9.11.13 Attention should be paid to the electrical
bonding of all equipment used in refuelling operations.
9.11.14 "NO SMOKING" signs should be displayed
at appropriate locations.