DIRECT SUPPORT MAINTENANCE
FIREFIGHTING, FIRE ALARM, AND FIRE SUPPRESSION SYSTEMS FOR
INLAND AND COASTAL LARGE TUG (LT)
FIRE DETECTION SYSTEM, REPLACE
Tools and Special Tools:
Tool Kit, General Mechanic's (Item 1, Table 2,
Two Watercraft Engineers, 88L
CLOSE valves FO-21, F.O. SPLY TO S.S.D.G. NO.
1, FO-22, F.O. SPLY TO S.S.D.G. NO. 2, and
FO-32, F.O. SPLY TO ENG. Lock out and tag
Tag, Danger (Item 8, Table 1, WP 0050 00)
out (FM 55-502).
Lock out and tag out (FM 55-502) the SHORE PWR.
Fire detection system prepared for removal
Fire detection panel component modules removed
Never reuse locking hardware. Reuse of locking hardware such as lockwashers,
locking nuts, cotter pins, and lock wire can result in undetected loosening of
fastening hardware causing catastrophic component failure resulting in death,
injury, or damage to equipment. In accordance with TB 43-0218, ensure that all
locking hardware is discarded upon removal and replaced with new.
FIRE AND SMOKE DETECTION PANEL REPLACEMENT
The fire and smoke detection panel can only be removed by opening the main switch-
board. All power to the vessel must be secured. Crewmembers will need to provide
battery powered lighting for the Removal and Installation procedures of the fire and
smoke detection panel.
1. Loosen the two captive screws (figure 1, item 1) on the number 2 generator control panel (figure 1, item 2) of
the main switchboard (figure 1, item 3).
2. Loosen the four captive screws (figure 1, item 4) on the inboard 460 volt panel (figure 1, item 5).