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 TM 55-1905-223-24-18-1
Supply points are replenished by pressurizing the supply line with the hand pump
and filling containers at the supply points.
1-26. Fuel Oil Transfer Piping System. The fuel oil transfer piping system
replenishes the ship's fuel oil tanks from deck discharge/fill connections and
replenishes engine and generator day tanks by transferring fuel oil from storage
tanks. System control is maintained through a combination of valves as shown in
No. 1 fuel oil transfer pump is supplied power from the auxiliary machinery motor
control center and controlled by a START/STOP pushbutton and an emergency STOP
switch at the pump. No. 2 fuel oil transfer pump is supplied power from the
emergency switchboard 240 Vac distribution and controlled by a START/STOP pushbutton
and an emergency stop pushbutton. Each pump has a run indicator lamp on the engine
room operating station console. Each pump also will be shut down upon any HALON
pressure switch activation. Fuel oil purification is provided by the fuel oil
f i l t e r / s e p a r a t o r . Included in the fuel oil transfer piping system is dual fuel
filters for each main engine. In an emergency, fuel may be transferred by the hand
pump.
1-27. Compressed Air Piping System. The compressed air piping system delivers the
air pressure required for starting the main engines, No. 2 SSDG (port), and other
uses. System control is maintained through a combination of valves as shown in
FIGURE 1-15. The compressed air piping system consists of two compressors that
deliver compressed air to two 200-gallon air receivers at 200 pounds per square inch
(psi) pressure. This air passes through a reducing valve, reducing the pressure to
control air pressure of 125 psi, moisture separator, and an automatic dryer to
points of usage. Supply air is furnished to sea chest blow down. Service air is
supplied to the machine shop, bowthruster room, and above deck points. Control air
is supplied to the dual throttle control system. Air pressure is controlled from
individual compressor pressure switches. Compressor power is supplied by the
auxiliary machinery motor control center with pushbutton START/STOP stations located
at each compressor. Each compressor has a run indicator lamp on the engine room
control console.
1-28. Lubricating Oil Transfer and Purification Piping System. The lubricating oil
transfer and purification piping system supplies clean lubricating oil for proper
operation of the main propulsion engines. The system also transfers lubricating oil
from the storage tank to the main engines and ships service diesel generator engines
sumps. The system also draws lubricating oil, from the main engines sumps.
Prelubricating the main engines after an extended shutdown period is possible with
use of the prelube pump. The system can be aligned to transfer dirty lubricating
oil from the main, SSDG, and bowthruster engines and reverse reduction gearboxes to
t h e dirty oil tank. System alignment is maintained by a combination of valves and
hand pumps as shown in FIGURE 1-16. Dirty oil and sludge are discharged from the
system via the dirty oil pump to port or starboard dirty oil discharge deck
connections. Power for the lube oil purifier unit and heater, lube oil prelube
pump, and dirty oil pump is supplied by the auxiliary machinery motor control center
Each has a START/STOP pushbutton adjacent to the unit and run indicator lamps on the
engine room operating station engine room console panel. Containers for
replenishing lubricating oil at the bowthruster engine, main reduction gears, and
emergency generator diesel engine, may be filled at the storage tank container fill
valve.
1-51
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