DIRECT SUPPORT MAINTENANCE
FIREFIGHTING, FIRE ALARM, AND FIRE SUPPRESSION SYSTEMS FOR
INLAND AND COASTAL LARGE TUG (LT)
FM-200 SYSTEM, TEST
Two Watercraft Engineers, 88L
Set to ON the FM-200 SYSTEM circuit breaker in
120V main deck, 01 & 02 emergency lighting
panel No. 1.
DA Form 4640
FM-200 system set for normal operation
DA Form 4993
SSDG 1, SSDG 2, bow thruster engine, and the
pump drive engine operating normally (TM 55-
EDG ready to accept a load, or vessel operating on
1. Ensure that the equipment controlled by pressure switch PS-1 (figure 1, item 1) identified below has been
powered up and is operating normally (TM 55-1925-273-10):
a. Engine Room Supply Fans 1 and 2
b. Engine Room Exhaust Fans 1 and 2
SSDG 1 and SSDG 2
d. Bow Thruster Engine
e. Pump Drive Engine
AMS 1 Supply Fan
g. Fuel Oil Transfer Pumps 1 and 2
2. Ensure that all other non-essential equipment has been properly secured.
If the vessel is operating on the ship's service diesel generator, the vessel will go dark
once pressure switch PS-1 is activated and will remain dark until the emergency gen-
erator comes online.
3. Manually operate pressure switch PS-1 (figure 1, item 1) by pulling up on the plunger (figure 1, item 2) to the
4. Verify that the amber strobe lights are operating in AMS 1, AMS 2, and the engine room.
5. Verify that the alarm bell sounds on the exterior main deck.
6. Verify that the equipment controlled by pressure switch PS-1 (figure 1, item 1) identified in step 1 of this work
package is no longer operating.