3.1.2.11
Insulation and Identification
Insulate piping in accordance with Section 15080 THERMAL INSULATION FOR
MECHANICAL SYSTEMS. [Frostproof air vents by insulating or shielding from
night sky reverse radiation.] After piping has been insulated, apply
identification labels and arrows in accordance with MIL-STD-101. Apply
identification over the insulation jacket of piping. Provide two copies of
the piping identification code framed under glass and install where
directed.
3.1.2.12
Excavating and Backfilling
Provide in accordance with Section 02300 EXCAVATION. Coordinate provision
of utility warning and identification tape with backfill operation.
Provide tapes above buried lines at a depth of 200 to 300 mm 8 to 12 inches
below finish grade.
3.1.3
Install instruments as recommended by the control manufacturers. [For the
monitoring system to detect [water] [and] [heat transfer fluid], locate the
sensor probe in the lowest corner of double-wall [tank] [and] [heat
exchanger].] Locate control panels [inside mechanical room] [_____].
3.2
FIELD QUALITY CONTROL
3.2.1
Field Inspection
Prior to initial operation, inspect the piping system for conformance to
drawings, specifications and ASME B31.1. Inspect the following information
on each collector:
a.
Manufacturer's name or trademark
b.
Model name or number
c.
Certifying agency label and rating.
3.2.2
Tests
Provide equipment and apparatus required for performing tests. Correct
defects disclosed by the tests and repeat tests. Conduct testing in the
presence of the [Contracting Officer] [QC Representative].
3.2.2.1
Piping Test
**************************************************************************
NOTE: Use pneumatic test if non-aqueous heat
transfer fluid are used, to avoid contamination of
fluids with water and to eliminate seepage problems.
**************************************************************************
[Pneumatically test new piping for leakage using air at a pressure of]
[Test new water piping for leakage using water at a pressure of at least
690 kPa (gage) 100 psig or] 1.5 times the system pressure. Install a
calibrated test pressure gage in the system to indicate loss in pressure
occurring during the test. Apply and maintain the test pressure for one
hour, during which time there shall be no evidence of leakage, as detected
by a reduction in test pressure. Should a reduction occur, locate leaks,
SECTION 13610N
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