UFC 4-150-07
19 June 2001
3-4.3.1 Protective Coatings for Steel. Steel in a marine environment will
corrode freely if left unprotected and without a coating system. Coating systems
are designed according to three marine zones:
constantly submerged
intertidal and splash zone
above the splash zone
Steel in the submerged zone is best protected through a combination
of a coating system and cathodic protection. Maintenance coating systems are
employed as follows:
Overcoats on sound coatings
Repairs to coating systems with spot failing
Complete reapplication where coating systems have failed
Surface preparation of previously coated steel may consist of the
following sequential procedures:
100% removal of biological growth
removal of unsound coatings and rust
removal of surface contamination such as oil, grease, dirt
removal of surface chloride contamination
brush-off blasting of sound coatings
abrasive blasting of uncoated steel to produce an angular anchor
profile between 0.05 to 0.08 mm (2 to 3 mils)
3-4.3.2 Coating Systems. The below coating systems have displayed high
performance and may be used for either spot repairs or complete reapplication. It
is recommended that a coating specialist be contacted prior to specifying one of
the below coating systems for overcoating sound coatings. DOD and other
Federal activities may wish to contact an NFESC coating specialist.
3-4.3.2.1 Submerged
Underwater cure, two-component, 100% solid liquid epoxy: 1 to 2
coats at 0.2 to 0.3 mm (7.87 to 11.81 mils) DFT
3-21
Previous Page
