of surface preparation to SSPC SP 10 Abrasive Blast
to Near-White Metal, may be exorbitant compared to
the costs of maintenance overcoating where the
existing coating system is in fair-to-good condition.
Additionally, NAVFAC Design Policy Letter
DPL-09B-0001, Lead-containing Paint on
Non-residential Structures of 26 Mar 92 provides
guidance for managing paints containing lead and
other hazardous materials in place. The fact that
lead was highly used as a primer is indicative of
its value to the corrosion control industry.
Premature removal of sound lead primer is not
considered to be a good management practice.
Activities should consider an annual CCS to survey
all structures to be authorized for design in the
coming year. When accomplished for multiple
projects, the per-structure cost will decrease. By
accomplishing this survey prior to design, the basis
for design is fully identified.
The CCS can also be a very useful tool when used to
screen structures for maintenance painting
requirements. A CCS can be scoped to provide a
general inspection of many structures to screen for
near-term overcoating or recoating requirements, and
subsequent investigation can be made to provide
appropriate details for project planning and design.
It should be pointed out that the aesthetic features
of a coating do not define the coating condition;
they only describe how the coating looks. Many
coating systems have been replaced when only the
topcoat is in need of "refurbishment." Likewise,
many structures such as water tanks and fuel tanks
have had complete coating replacement when only the
roof coating needed replacement. A CCS can identify
the weak components as well as the satisfactory
components, and propose solutions to make maximum
use of existing resources.
The Society for Protective Coatings (formerly Steel
Structures Painting Council) (SSPC), has published a
Technology Update titled SSPC TU 3 Maintenance
Overcoating. This document should be used as a
guide for scoping the CCS, for accomplishing the
CCS, and for designing the coating work.
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NOTE: Designers are encouraged to contact J. H.
Brandon, LANTNAVFACENGCOM 1613G, 757 322-4645,
brandonjh@efdlant.navfac.navy.mil prior to beginning
a new Navy design.
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