NOTE: Coordinate nameplate information with the
manufacturer. Select 50 ppm for Army projects and 2
ppm for Air Force projects.
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Power transformers shall be provided with nameplate information in
accordance with IEEE C57.12.00. Nameplates shall indicate the number of
liters gallons and composition of liquid-dielectric, and shall be
permanently marked with a statement that the transformer dielectric to be
supplied is non-polychlorinated biphenyl. If transformer nameplate is not
so marked, the Contractor shall furnish manufacturer's certification for
each transformer that the dielectric is non-PCB classified, with less than
[50] [2] ppm PCB content in accordance with paragraph LIQUID DIELECTRICS.
Certifications shall be related to serial numbers on transformer
nameplates. Transformer dielectric exceeding the [50] [2] ppm PCB content
or transformers without certification will be considered as PCB insulated
and will not be accepted.
2.3
CORROSION PROTECTION
2.3.1
Aluminum Materials
[Aluminum shall not be used in contact with earth or concrete. Where
aluminum conductors are connected to dissimilar metal, fittings conforming
to UL 486A-486B shall be used.] [Aluminum shall not be used.]
2.3.2
Ferrous Metal Materials
2.3.2.1
Hardware
Ferrous metal hardware shall be hot-dip galvanized in accordance with ASTM
A 153/A 153M and ASTM A 123/A 123M.
2.3.2.2
Equipment
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NOTE: A 120-hour test will be specified in a
noncorrosive environment and a 480-hour test will be
specified in a corrosive environment.
**************************************************************************
Equipment and component items, including but not limited to transformer
stations and ferrous metal luminaries not hot-dip galvanized or porcelain
enamel finished, shall be provided with corrosion-resistant finishes which
shall withstand [120] [480] [_____] hours of exposure to the salt spray
test specified in ASTM B 117 without loss of paint or release of adhesion
of the paint primer coat to the metal surface in excess of 1.6 mm 1/16 inch
from the test mark. The scribed test mark and test evaluation shall be in
accordance with ASTM D 1654 with a rating of not less than 7 in accordance
with TABLE 1, (procedure A). Cut edges or otherwise damaged surfaces of
hot-dip galvanized sheet steel or mill galvanized sheet steel shall be
coated with a zinc rich paint conforming to the manufacturer's standard.
2.3.3
Finishing
Painting required for surfaces not otherwise specified and finish painting
of items only primed at the factory shall be as specified in Section 09900
PAINTS AND COATINGS.
SECTION 16375A
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