Material Safety Data Sheets (MSDS), and certificate for compliance for VOC
content shall be submitted to the Contracting Officer. Application, curing
time, mixing and thinning of the coating materials shall be in strict
accordance with the manufacturers instructions. The use of thinners shall
not alter the required minimum dry thickness or adversely affect the VOC
content.
3.8.1
Exterior Surfaces (Welded Tanks)
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NOTE: For rural areas, mild to fairly heavy
industrial atmospheres, and mild marine atmospheres,
use the first bracketed paragraph. For moderately
severe to the most severe atmospheres, such as
seacoasts and in corrosive industrial areas, use the
second bracketed paragraph. The vinyl system is
fast drying and best in congested areas where there
is danger of property damage due to overspray but
should be used only in white or light gray colors
because it fades and chalks easily. The epoxy
polyurethane system retains its color and gloss well
and is highly abrasion resistant and graffiti is
easily removed. If the tank is or will be an
obstruction to air navigation, use the checkerboard
pattern.
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[A prime coat, minimum of 0.051 mm 2.0 mil thick followed by two coats of
alkyd enamel, each a minimum of 0.038 mm 1.5 mil thick shall be applied.
The prime coat shall be rust inhibitive red iron oxide, zinc oxide, oil and
alkyd primer without lead or chromate pigments, in accordance with SSPC
Paint 25. The finish coats shall be [white alkyd enamel in accordance with
Type I of SSPC Paint 104] [[_____] gloss alkyd enamel in accordance with
SSPC Paint 21] [alternating panels (checkerboard) of white alkyd enamel in
accordance with Type I of SSPC Paint 104 and international orange gloss
alkyd enamel in accordance with SSPC Paint 21 color 12197].]
[[A gray vinyl prime coat a minimum of 0.038 mm 1.5 mil thick followed by
two coats of [white] [light gray] vinyl paint, each a minimum of 0.038 mm
1.5 mil thick shall be applied. The primer and paint shall be VR-3 in
accordance with BOR Paint Mnl] [A two-component catalyzed epoxy prime and
intermediate coat, each a minimum of 0.076 mm 3.0 mil thick, followed by a
two-component catalyzed aliphatic polyurethane finish coat, a minimum of
0.038 mm 1.5 mil thick, conforming to Type V of SSPC PS Guide 17.00 shall
be applied. The prime coat shall be a green primer, Formula 150 in
accordance with MIL-P-24441/GEN. The intermediate coat shall be white
Formula 152 in accordance with MIL-P-24441/GEN and may be tinted with
pigment color. The finish coat shall be [white] [_____] [alternating
panels (checkerboard) of international orange and white]].]
3.8.2
Interior Surfaces (Welded Tanks)
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NOTE: Where surface and ambient temperatures of 10
degrees C (50 degrees F) and higher will be
maintained during curing, the epoxy system shall be
specified. When this is not the case and heating is
not practical but ambient temperatures will be
greater than 1 degree C (34 degrees F), specify the
SECTION 13209
Page 19
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