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Page Title:
Bow Thruster Room Halon Operation. |
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 TM 55-1915-200-10
NOTE
NOTE
Both pull boxes are mounted on the
Further resetting is not required.
bulkhead forward of the starboard
The Halon and C02 cylinders must be
engine room door.
recharged or replaced and the pull
boxes must be reset by depot
The Halon 1301 Fire Suppression
maintenance when the vessel is
System for the engine room cannot
docked.
be automatically activated unless
2-5.9.2. Bow Thruster Room Halon Operation.
both pull box handles are pulled.
WARNING
(1) Break glass on VALVE RELEASE surface
pull box (FIGURE 2-141) with hammer (3).
All personnel shall leave the bow
thruster room immediately upon
(2) Pull handle (2) away from pull box (1) 4 to
activation of the Halon 1301 Fire
6 inches. Release handle.
Suppression System alarm. System
discharges within 25 seconds after
(3) Break glass on CYLINDER RELEASE
activation.
Evacuating personnel
surface pull box with hammer (3).
must secure all hatchways and doors
as they evacuate the area.
(4) Pull handle (2) away from pull box (1) 4 to
6 inches. Release handle.
a. Watertight Pull Box Operation.
NOTE
NOTE
Alarm siren will sound in engine
Both watertight pull boxes are
room. Discharge of Halon will be
mounted on the exterior bulkhead to
delayed for 25 seconds to allow
the right of the DECK STORES
evacuation
of
engine
room.
watertight door.
Discharge of Halon is completed in
10 seconds.
WARNING
Pressure Operated Switches Reset.
The Halon 1301 Fire Suppression
During the 25 second warning time,
System for the bow thruster room
four
PRESSURE
OPERATED
cannot be automatically activated
SWITCHES automatically shut down
unless both watertight pull box
the engine room console, two main
handles are pulled.
engines,
two
ship's
service
generators, fuel oil supplies, and the
(1) Turn handle (2, FIGURE 2-143) on
ventilation system in the engine
VALVE
RELEASE
pull
box
180
degrees
room. Before this equipment can be
counterclockwise.
restarted, the four PRESSURE
OPERATED SWITCHES must be
(2) Pull down on handle and open cover.
reset.
(3) Break glass on VALVE RELEASE pull box
b. Reset the four pressure switches located above
with hammer (3).
Halon bottles on the forward bulkhead of the Upper
Machinery Room by pushing the stem (1, FIGURE 2-
142) down to the SET position.
2-409
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