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TB 55-1900-231-15
J. Tanks:
(1) Diesel Oil Day Tanks: Upon completion of cleaning each tank will be filled to 90% capacity with diesel fuel
in a ready for service condition. LCM-8's have no day tanks, therefore, the LCM fuel storage tanks will be
filled to 90% in a ready for service condition. Additives will be added to diesel fuel stored in storage and/or
day tanks IAW MIL-S. 53021 (Appendix G).
(2) Diesel Oil Storage Tanks: Except for the LCM-8's, diesel fuel oil storage tanks will be cleaned and
atomize sprayed with P-10, Type I, Grade 30 preservative. Excess preservative accumulating in the
bottom of the tanks shall be removed, and the tanks closed, ready to be filled with diesel fuel.
(3) Lubricating Oil Storage Tanks: Lube oil storage tanks shall be filled with oil as specified in the applicable
lubrication order or technical manual to place watercraft in a ready for service condition.
(4) Dirty Oil and Sludge Tanks: Dirty oil and sludge tanks shall be drained, cleaned, closed up and left in a
ready condition.
(5) Raw Water/Ballast Tanks: Shall be drained and blown dry. In the case of large tanks (ballast tanks, etc.)
they will be pumped, cleaned and dried out. Reinstall access covers and leave any installed vents open.
Depending on paint system condition, the raw water/ballast tanks may require the removal of corrosion and
painting in accordance with TB 43-0144.
(6) Potable Water Tanks: Potable water tanks shall be inspected prior to preparation of Specifications for
Underwater Hull Protection work. For tanks severely deteriorated (needing more than touch-up painting)
an item shall be included in the Underwater Hull Protection Specifications to sandblast the tank(s) and
Paint IAW TB 43-0144. Potable water tanks (pressure tanks, hot water heater/tanks, etc.) will be drained
and blown dry with compressed air. Potable water storage tanks will be drained/pumped, dried, cleaned
and painted as required. Reinstall access covers and leave installed tank vents open. Preservatives will
not be applied or introduced into the potable water systems. Chlorine for sanitizing water and tanks at the
time of activation shall be placed aboard the respective craft in a cool dry place with a copy of TB 43-0153,
water supply afloat.
(7) Air Tanks: Air tanks will be bled down. The valves for purging moisture from the tanks will be left open
until activation. No other preservation required.
(8) Oil and Water Separator Vessels: Shall be drained. No other preservation required.
K. Pumps: (Other than engine mounted)
(1) Raw Water Pumps: Raw water pumps shall be drained and flushed with fresh water, and then blown dry
with compressed air. Drain plugs shall be reinstalled.
(2) Fresh Potable Water Pumps: Fresh/potable water pumps shall be drained and blown dry with compressed
air. Drain plugs shall be reinstalled.
NOTE
Do not drain and blow dry the engine cooling water pumps since these systems have antifreeze
protection.
(3) Fuel and Lubricating Oil Pumps: No preservation required. Leave primed and ready for service.
(4) Pump Packing: Pump shaft packing shall be replaced when packing glands are taken up more than 50
percent.
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