Quantcast FIRE AND SMOKE DETECTION PANEL - TM-55-1925-292-14-P0054

 

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Figure 3. Fire Alarm System Remote Indicating Panel (Pilothouse)
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TM-55-1925-292-14-P Firefighting Fire Alarm and Fire Suppression Systems Inland and Coastal Large TUG (LT) Manual
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Figure 4. Components of the Fire Alarm Systems by Zone (sheet 1 of 3)
0003 00
TM 55-1925-292-14&P
There are 15 24-volt ionization smoke detectors in various locations throughout the vessel. The 24- volt ioniza-
tion smoke detectors contain a set of normally open contacts that close when smoke is detected. When the
contacts are closed, the fire and smoke detection panel in the EOS detects the condition and sounds the alarm.
There are three thermal heat detectors. One each is located in the Emergency Diesel Generator (EDG) room,
the galley, and the crew's mess/recreation area. The thermal heat detectors are similar to the smoke detectors
except the contacts close when a temperature of 135 F (55.2 C) is sensed.
The fire alarm system sounds two system bells and energizes a beacon. One bell is located in the pilothouse,
and the other one is in the EOS. The beacon is mounted in the radio room. The bells and beacon are provided
as an independent indication of a fire alarm condition.
The fire alarm system is capable of detecting heat and smoke. It relies on various sensors placed throughout
the vessel to detect the alarm condition. The sensors are grouped into four zones on the vessel (Refer to figure
4):
Zone 1
Pilothouse and radio room
Zone 2
01 level and Emergency Diesel Generator (EDG) room
Zone 3
Boatswain's store, main deck passageway, galley, and crew's mess area
Zone 4
Auxiliary Machine Space (AMS) 1, engine room, AMS 2, and towing gear locker
0003 00-4

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