3.1.2
Existing Equipment
The Contractor shall connect to and utilize existing lighting equipment and
devices as shown. Lighting equipment that is usable in their original
configuration without modification may be reused with Government approval.
The Contractor shall perform a field survey, including testing and
inspection of existing lighting equipment and control lines intended to be
incorporated into the lighting system, and furnish a report to the
Government. For those items considered nonfunctioning, specification
sheets, or written functional requirements to support the findings and the
estimated cost to correct the deficiency shall be provided with the report.
As part of the report, the Contractor shall include the scheduled need
date for connection to all existing equipment. The Contractor shall make
written requests and obtain approval prior to disconnecting any control
lines and equipment, and creating equipment downtime. Such work shall
proceed only after receiving Government approval of these requests. If any
device fails after the Contractor has commenced work on that device, the
Contractor shall diagnose the failure and perform any necessary corrections
to the equipment. The Government is responsible for maintenance and repair
of Government equipment. The Contractor shall be held responsible for
repair costs due to Contractor negligence or abuse of Government equipment.
3.2
ENCLOSURE PENETRATIONS
Enclosure penetrations shall be from the bottom unless the system design
requires penetrations from other directions. Penetrations of interior
enclosures involving transitions of conduit from interior to exterior, and
penetrations on exterior enclosures shall be sealed with rubber silicone
sealant to preclude the entry of water. The conduit riser shall terminate
in a hot-dipped galvanized metal cable terminator. The terminator shall be
filled with an approved sealant as recommended by the cable manufacturer,
and in such a manner that the cable is not damaged.
3.3
PREVENTION OF CORROSION
3.3.1
Aluminum
Aluminum shall not be used in contact with earth or concrete, and where
connected to dissimilar metal, shall be protected by approved fittings and
treatment.
3.3.2
Steel Conduits
Steel conduits shall not be installed within concrete slabs-on-grade.
Steel conduits installed underground or under slabs-on-grade, or
penetrating slabs-on-grade, shall be field wrapped with 254 micrometers
(0.010 inch) 0.010 inch thick pipe-wrapping plastic tape applied with a 50
percent overlap, or shall have a factory-applied plastic resin, epoxy
coating. Zinc coating may be omitted from steel conduit which has a
factory-applied epoxy coating.
3.3.3
Cold Galvanizing
Field welds and/or brazing on factory galvanized boxes, enclosures,
conduits, etc. shall be coated with a cold galvanized paint containing at
least 95 percent zinc by weight.
SECTION 16528A
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