3.3.5
Electrodes
Electrodes shall be stored and dried in accordance with AWS D1.1/D1.1M or
as recommended by the manufacturer. Electrodes that have been wetted or
that have lost any of their coating shall not be used.
3.4
QUALITY CONTROL
3.4.1
General Test Requirements
Tests shall be conducted before, during, and after the installation of the
system. All instruments, equipment, facilities, and labor required to
properly conduct the tests shall be provided by the Contractor. Test
pressure gages for a specific test shall be approved by the Contracting
Officer and shall have dials indicating not less than 1 1/2 times nor more
than 2 times the test pressure. Any deficiencies shall be corrected at the
Contractor's expense. Failure to correct any deficiencies will be cause
for rejection of the system.
3.4.2
Field Tests
The following field tests shall be conducted when applicable to the system
involved. If any failures occur, the Contractor shall make such
adjustments or replacements as directed by the Contracting Officer, and the
tests shall be repeated at the Contractor's expense until satisfactory
installation and operation are achieved.
3.4.2.1
Hydrostatic Tests of Service Piping
All service piping shall be tested hydrostatically before insulation is
applied at field joints, and shall be proved tight at a pressure 1 1/2
times the maximum operating pressure or 1379 kPa 200 psi, whichever is
greater, except hot water lines shall not be tested at more than 4136 kPa
600 psi. Hydrostatic test pressures shall be held for a minimum of 4 hours.
3.4.2.2
After completion of the system, or testable portions thereof, operational
tests shall be conducted as in service to demonstrate satisfactory function
and operating effectiveness. The tests on each system, or portion thereof,
shall last not less than 6 hours.
3.5
SCHEDULE
Some metric measurements in this section are based on mathematical
conversion of inch-pound measurements, and not on metric measurements
commonly agreed on by the manufacturers or other parties. The inch-pound
and metric measurements shown are as follows:
Products
Inch-Pound
Metric
a.
Fluid Filled Thermometer
Nominal Scale Diameter
= 5 inches
= 127 mm
b.
Bimetal Thermometer
Scale Diameter
= 3 1/2 inches
= 90 mm
c.
Operating Condition
= 400 psi
= 2758 kPa
SECTION 15184N
Page 20
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