2.10.2
Helipad IMC Approach Lights
The IMC helipad approach lights fixtures shall be [FAA specification FAA
E-982 lampholder for Type PAR-56 lamps without filters]. The fixtures
shall be frangibly mounted on [steel stakes] [FAA AC 150/5345-42, Type
L-867 bases]. The lamps shall be as required by the contract drawings.
The lights shall be energized by a [6.6 ampere] [20 ampere] series circuit
through isolation transformers. The isolation transformers shall be FAA
AC 150/5345-47, Type L-830-6, 6.6/6.6 ampere, 200 watt, 60 hertz
transformers.
2.10.3
Helipad IMC Landing Direction Lights
The helipad IMC landing direction lights fixtures shall be FAA AC
150/5345-46, Type L-862 elevated, high-intensity, bidirectional, fixtures
with aviation yellow filters. The lights shall be frangibly mounted on [
FAA AC 150/5345-42, Type [L-868] [L-867]] bases. These lights shall be
energized from a [6.6 ampere series circuit through isolation transformers]
[120/240 volt multiple circuit] power source as required by the contract
drawings. The isolation transformers for series circuits shall be FAA AC
150/5345-47, Type L-830-6, 6.6/6.6 ampere, 200 watt, 60 hertz transformers.
2.11
AIRFIELD AND HELIPORT LIGHTING SYSTEMS
Lighting at airfield or heliport interfaces shall be as specified in
[Section 16526A, AIRFIELD AND HELIPORT LIGHTING AND VISUAL NAVIGATION AIDS.]
2.12
FACTORY COATING
**************************************************************************
NOTE: A 200-hour test will be specified in a
noncorrosive environment and a 500-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 [200] [500] 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) 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 SSPC Paint 20 in
accordance with ASTM A 780.
PART 3
EXECUTION
3.1
GENERAL INSTALLATION REQUIREMENTS
Circuits installed underground shall conform to the requirements of Section
16375A ELECTRICAL DISTRIBUTION SYSTEM, UNDERGROUND, except as covered
herein. Steel conduits installed underground shall be installed and
protected from corrosion in conformance with the requirements of Section
16402 INTERIOR DISTRIBUTION SYSTEM. Except as covered herein, excavation,
trenching, and backfilling shall conform to the requirements of Section
02300 EARTHWORK. Concrete work shall conform to the requirements of Section
SECTION 16525A
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