of leakage, locate and repair leak by rewelding and repeat test. Materials
and equipment shall be subject to inspection at the installation site by
the Contracting Officer.
3.2.1
Piping Test
Before final acceptance of the work, test each system as in service to
demonstrate compliance with contract requirements. Furnish electricity,
instruments, connecting devices, and personnel for the tests. Correct
defects in work provided by the Contractor and repeat tests until work is
in compliance with contract requirements. Government will furnish fuel for
piping testing and flushing provided by the Contractor. Contractor shall
be responsible for test fuel losses greater than 10 percent.
**************************************************************************
NOTE: On projects that provide modifications to
existing piping systems, pneumatic pressure testing
and hydraulic pressure testing of newly installed
piping is much more difficult than the same testing
on a complete new system. Therefore, by means of
the following design techniques, provide for the
Contractor a piping modification design that
facilitates acceptance testing: piping design which
includes flanges at appropriate locations for
flanged blanks to be installed for testing;
specifications which include requirements for how
the modified piping shall be pressure tested;
specifications which specify which pipe sections
shall be pressure tested in the shop if absolutely
necessary.
**************************************************************************
3.2.1.1
Pneumatic Test
Pneumatically test each piping system to 172 kPa (gage) 25 psig, examine
joints with soap solution. Gradually increase to 345 kPa (gage) 50 psig
and hold for 1 hour. The pneumatic test is more hazardous than a
hydrostatic test, therefore, special safety measures, including the wearing
of face masks, shall be taken during testing under pressure. Only
authorized personnel shall be permitted in the area during pneumatic and
hydrostatic testing.
3.2.1.2
Upon completion of pneumatic testing, hydrostatically test each piping
system at 1.5 times maximum system operating pressure but in no case more
than 1896 kPa (gage) 275 psig in accordance with ASME B31.3 and API RP 1110,
with no leakage or reduction in gage pressure for 4 hours.
3.2.1.3
Flushing
Thoroughly flush piping before placing in operation. Flush piping,
including branch piping, at a minimum velocity of 2.40 meters 8 feet per
second.
3.2.2
Secondary Containment Piping Test
The secondary containment piping system shall undergo a 34 kPa 5 psi
minimum air-pressure/soap test upon completion of installation to confirm
SECTION 15192N
Page 25
Previous Page
