OPERATING PROCEDURES.

TM 55-1915-200-10

Section IV. OPERATION UNDER UNUSUAL CONDITIONS - Continued

2-7.1.1. Emergency Equipment Available . When the

2-6. GENERAL . This section contains operating

procedures for individual equipment during periods of

emergency generator is operating and the emergency

equipment failure, abnormal conditions, or periods of

power is applied, the following equipment is available:

unusual weather conditions. Emergency conditions that

occur as a result of storm damage, accident at sea or

a. Fire Pump.

battle damage are covered in TM 55-1915-200-SDC, the

Shipboard Damage Control Manual. Only those unusual

b. Steering Gear Hydraulic Pump Number 2.

conditions associated with equipment failures or normal

c. Emergency Generator Room Steering Gear

breakdowns are described here.

Compartment Fan.

2-7. OPERATING PROCEDURES.

d. Air Compressor Number 2.

e. Emergency Generator Air Supply Fan.

2-7.1. Power Generation. Normal power from ship

service generators through the main switchboard,

f. Emergency Load Center Panel Transformer.

maintain bus tie breakers in the normal (on-line)

configuration. This power (voltage) steps down through

2-7.1.2. Reset Emergency Generator. As soon as an

a transformer and applies 110 volts to the main and

electrical failure has occurred, the process of correcting

emergency bus tie breakers. This voltage keeps the

the failure and restoring power from the ship service

main bus tie breaker closed and the emergency bus tie

generators will begin.

Troubleshooting and

breaker open. In the event of a power failure, the main

maintenance procedures are in TM 55-1915-200-24&P.

bus tie breaker will open and kill all AC voltage. After

When power is available, and ship service generators

AC power is lost, the voltage holding the main bus tie

are operating, perform the following procedures:

breaker is lost and the main bus tie breaker will open.

Simultaneously, several actions take place. First, a

mechanical dead bus timer will start; this energizes the

a. Turn the Emergency Generator Engine Control

auto crank of the emergency generator. Second, 24

Switch (15, FIGURE 2-20) to the RESET position.

VDC battery will take over the operation of emergency

communication circuits and emergency lighting. Finally,

b. This will stop the Emergency Generator Engine.

the dead bus timer starts a 45 second time delay. This

Allow the engine to idle down and stop with the Engine

time delay allows the emergency generator to come up

Control Switch (15) in RESET.

to speed and settle out before the emergency bus tie

c. Return Engine Control Switch (15) to the

breaker closes and applies a load to the emergency

AUTOMATIC position. This places the emergency

generator. At this point, AC voltage is applied to the

generator ready in the event of another power failure.

emergency switchboard. All of this operation and

switching requires no action from the operator.

Change 11 2-580.1