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 TB 55-1900-231-15
1.
Stbd. machinery house door.
2.
Crews mess stbd. outboard center porthole (above refrigerator).
3.
Accesses to living quarters storerooms (2 each).
4.
Crews' washroom door.
5.
Passageway to living quarters door.
6.
CHT room aft scuttle.
7.
Ballast tank vents (6 each).
8.
Fuel oil day tank vents (2 each).
9.
Lube oil service tank vent.
10.
Freshwater expansion tankents (2 each).
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11.
Fuel oil drain tank vent.
12.
Lube oil drain tank vent.
13.
OWS dirty oil tank vent.
14.
Main fuel oil tank vent.
15.
CHT holding tank vent.
16.
Main potable water tank vent.
17.
Machinery house fuel oil day tank vent.
18.
Operators cab door.
All other doors and hatches will be closed and dogged.
D. Install wooden plywood blanks over the boom, main and auxiliary hoist cable penetrations on top and
fwd. of the machinery house. (See Chapter III, Section 4, paragraph F.) The blanks will be fitted with
7/8 inch diameter holes for the auxiliary hoist cables, 1-1/4 inch diameter holes for the boom hoist
cables, and 1-1/8 inch diameter holes for the main hoist cables. Seal the blanks with pressure sensitive
tape, glue and strip coat. Pack duct seal around the cable penetration holes.
E. Install wooden plywood blanks equipped with simple quick acting dogging devices or strongback
securing devices and with 1/8 inch neoprene rubber strips that will provide a flexible seal between the
wood and its mounting surface over the manhole accesses to the machinery house from underneath
the machinery house. Seal any gaps with pressure sensitive tape, glue and strip coat. Ensure that the
accesses (2 each) to the rotary collector box are properly secured. One of the two accesses is inboard
in the boom trolley extension void.
F. Inspect all penetrations to the machinery house from underneath the machinery house. These shall
include electrical cable stuffing tubes, hydraulic line tubing, conduit, piping, and spud and pawl linkage
penetrations. Pack gaps and openings with duct seal. Seal any other holes found with pressure
sensitive tape, glue and strip coat. After completion of sealing under the machinery house, seal the
access to underneath the machinery house from the machinery house with pressure sensitive tape,
glue and strip coat.
G. The natural gooseneck vents on top of the machinery house (4 each) will be sealed with pressure
sensitive tape, glue and strip coat. Pack any gaps in the electrical cable stuffing tube penetrations with
duct seal. Upon completion of sealing on top of the machinery house, shut and dog the access hatch.
Seal any gaps with pressure sensitive tape.
H. Inspect all the windows in the machinery house and operators cab. Seal gaps with pressure sensitive
tape and glue.
I.
Seal the machinery house counterweight deck drains (2 each) in the port and stbd. aft corners adjacent
to the boom hoist drum and the exit holes underneath the counterweight outside the machinery house
with pressure sensitive tape and glue.
D-2
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