1 A fan room solely serving the engine-room or
multiple spaces containing an engine-room, may be treated as machinery
space having little or no fire risk. In this case:
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.1 boundaries between the fan room and engine-room
casing should be of "A-0" fire integrity; In this case:
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.2 duct penetrations should comply with SOLAS regulation II-2/9.7.3.1.2;
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.3 ducts serving the engine-room should be routed
directly to the relevant fan(s) and from the fan to the louvers; and
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.4 closing of the ventilation duct to/from the
engine-room should be possible from outside the engine-room. In this
case, the controls for the closing of the engine-room ventilation
duct (i.e., a fire damper installed in accordance with SOLAS regulation II-2/9.7.3.1.2) can
be located inside the fan room.
2 A fan room solely serving the engine-room may
be considered as part of the engine-room. In this case:
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.1 requirements for fire integrity of the horizontal
boundary between fan room and engine-room need not apply; and
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.2 closing the ventilation duct to/from engine-room
should be possible from outside the engine-room. In this case, the
controls for closing of the ventilation trunk (i.e., a fire damper
installed as per SOLAS regulation
II-2/9.7.3.1.2) should be located outside the fan room.
3 For both of the cases described above:
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.1 for any space(s) adjacent to the fan room superstructure,
the fire integrity of the separating bulkhead(s) should meet the applicable
fire integrity requirements contained in the table set out in SOLAS regulation II-2/9; and
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.2 the 1966 Load Line Conventionfootnote requirements relevant to the means of closing
for downflooding protection should be applied, if necessary.