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.
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Equipment and component items, including but not limited to transformer
stations and ferrous metal luminaires 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.
2.4
STATION ARRANGEMENT
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NOTE: Coordinate with paragraph SUBSTATION
EQUIPMENT.
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The main electric supply [station] [substation] shall be of the [substation
transformer type with an open-type bus-and-switch arrangement] [articulated
primary unit substation arrangement with close-coupled high-voltage and
low-voltage sections] [primary unit substation arrangement with
close-coupled low-voltage section].
2.4.1
Support Structures
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NOTE: Connections to aerial lines will be run
underground to new stations (35 kV or less), thus
SECTION 16311A
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