MIL-HDBK-1130
Sluices. Stop logs should be placed at all discharge outlets.
b)
Flooding sluice gates should remain closed, and stop log gates
should be placed in the screen guides. The following items
should be cleaned of marine growth, fouling, and corrosion and
coated with anti-corrosive compound, bituminous primer and
enamel, or standard ships' bottom coating, if available:
(1) Trash racks.
(2) Sluice gates, guides, and stop logs.
(3) Dock floor gratings and culvert air vents.
(4) Collector channel screens and gratings and sluice gates.
(5) Dewatering sumps (clean only, coating unnecessary).
(6) Backwash trash rack and hinged stop gate.
c)
Ship Blocking. Leave all bilge and keel blocking in place
unless the dock will be used for berthing or placement
elsewhere is called for. Loose timber should be removed.
d) End Closures. All end closures and seats should be inspected.
If the caisson is to be left in place, damaged closures and
seats should be repaired before inactivating the dock. End
closures and seats should be left in such condition that they
will be usable if the dock is reactivated. In docks that are
to be left in the flooded condition, it is normally desirable
to remove the caisson gate and maintain it afloat. A caisson
in poor condition, when determined practical by an engineering
analysis, may be sold or scrapped. For those drydocks that
have flap gates for end closures, contact NAVFAC EFD for
guidance.
Caisson-type closures that have not been drydocked and
overhauled within a 12-month period prior to inactivation
should be drydocked, repaired, and preserved, unless they are
to be disposed of as discussed in this section. Exterior
surfaces of end closures should be given protective coatings
and cathodic protection as recommended by NAVFAC EFD. All
interior surfaces should have protective coatings, and some
spaces may be dehumidified (See para. 2.3.3.2.e, below).
e)
Machinery and Equipment. Machinery spaces housing the main
dewatering pumps and valve motors should be kept in a
dehumidified state. If this is not possible, all electrical
gear, pump motors, and control equipment should be shrouded in
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