MIL-HDBK-1110
c) Configurations That Permit Vapors or Liquids to
Impinge on Structural Components. Structures such as steam
lines.
d) Configurations Restricting Access. Structures that
restrict access for painting receive poor quality maintenance.
e) Designs Creating Crevices. Crevices are difficult
to coat, and the oxygen deficiencies in them produce a type of
galvanic corrosion.
f) Other Difficult to Paint Surfaces. Sharp edges and
welds should be ground, pits should be filled, and corners should
be avoided.
12.2.1.2 Design of Coating System. The original coating system
must be designed to be compatible with both the environment in
which it is to be located and the substrate to which it is to be
applied. Sections 4 and 5 of this handbook list systems that
meet this requirement and are cost effective. As far as
possible, it is desirable to specify coating systems that are
easy to apply and maintain. It is always preferable to do the
surface preparation and the paint application in the controlled
environment of a shop as compared to the field. If this is not
possible, this work should be accomplished at the work site
before rather than after erection.
12.2.2
Plan for Monitoring Conditions of Structures and Their
Protective Coatings. Annually, each coated structure at each
military activity should be inspected for deterioration of both
the substrates and their coatings. Both the types and the extent
of deterioration should be noted, and the generic type of the
finish coat should be determined if it not already known. An
estimate should also be made as to when structural and coating
repairs should be made to prevent more serious damage. Other
structures at the activity that require the same type of
maintenance should also be noted, since it would be more
economical to include as many structures as appropriate in a
single contract. An example of an inspection form which has been
successfully used for routine inspections and could be modified
to meet an installation's needs is shown in Figure 26.
12.2.2.1 Determining the Type of Coating Failure. The type of
coating failure can be determined by following the procedure
given in Section 11.
12.2.2.2 Determining the Extent of Coating Failure. In
maintenance painting, it is necessary to determine the extent of
coating failure to permit realistic bidding for the repair work.
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