MIL-HDBK-1110
Section 5:
COATING SYSTEMS FOR SPECIFIC USES
5.1
General. Section 4 of this document provides general
guidance for the selection of coating systems for wood,
concrete/masonry, steel, galvanized steel, and aluminum surfaces.
This section provides more detailed information on systems for
specific structures or components of structures. These
structures include metal storage tanks, pipe lines, towers,
waterfront structures, siding, fences, and hot surfaces; concrete
storage tanks, swimming pools, catchment basins, pavements, and
floors; and wood floors. This section also describes problems
associated with mildew on painted surfaces.
5.2
Painting New Construction. The designer of the first
coating system for a new fuel tank, pipe line or other
constructed facility has the unique opportunity to specify a
system that can provide the best service. Much of the coating
system - surface preparation, priming and in some cases
application of the complete coating system - can be carried out
in a shop environment where the environmental and application
parameters can be controlled. By controlling these conditions,
the surface can be very well prepared and the film properties
obtained after curing are optimum. Further, worker safety and
environmental controls may be more easily accomplished. Since
the cost difference of a white metal blast as compared to a near-
white blast may be small for new steel, and since the cost of the
"best" materials may not be much greater than the cost of "poor"
materials, the use of these procedures and materials should be
considered when selecting the coating system. Maintenance
painting is always more difficult than shop painting and frequent
maintenance painting on constructed facilities may interfere
unacceptably with the mission of the structure. Thus, in
summary, it is recommended that high-performance systems be
specified on new construction.
5.3
Fuel Storage Tanks. Steel fuel tanks are coated to
keep the fuel clean and prevent leaks resulting from corrosion.
Leaks can cause fires or serious contamination of soils or ground
waters. Underground steel fuel tanks should also be cathodically
protected or double walled to meet Department of Transportation
requirements directed at environmental protection from fuel
leaks.
For new tanks in most environments, effective
performance of most chemically cured (e.g., epoxies and
polyurethanes) has been obtained with a near-white finish (SSPC
SP 10) before coating. However, it is essential that the surface
preparation specified for a coating not be in conflict with that
provided by the coating manufacturer on the written coating data
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