ut
9.
Pipe lines shall be pressure tested in presence of the CQA Consultant.
CONTRACTOR to provide ENGINEER with a minimum of 7 days’ notice
before performing the test.
Provide necessary connections between section of pipe being tested and
nearest available source of water or air supply, together with test
pressure equipment, meters, pressure gauge, other equipment, materials
and facilities necessary to make specified tests.
Owner will provide a source of water for testing.
Provide bulkheads, flanges, valves, bracing, blocking, or other temporary
sectionalizing devices as required to perform the tests safely.
Pipe to be tested shall be exposed in the trench, except that bends,
reduced pressure rated fittings and components should be buried or
restrained. Flange connections shall be visible to check for leaks.
Contractor shall notify on-site personnel of the testing schedule, and only
allow personnel required to perform the test in the test area for the
duration of the test.
Contractor shall provide a system without leaks.
B. Test all non-perforated HDPE leachate force main pipe and fittings. Test all
PVC pipe in the Sump Riser Building, installed in accordance with specification
section 15212 and 15310, using this procedure as well.
C. Preparation
1.
Remove or isolate valves, flow meters, and instruments that may not
withstand the required test pressure from within the test sections.
Reconnect pipes with temporary fittings. Vent isolated equipment.
Flush pipe with clean water until pipe section to be tested is clean and
free of dirt, sand, pipe shavings, or other foreign material.
Plug pipe outlets with test plugs, blind flanges or other devices suitable
for the test pressure. Brace securely to prevent blowouts. Verify test
pressure does not exceed any component of the pipe system.
Restrain or remove expansion joints.
Pressurizing equipment shall include a pressure regulator, set to avoid
over-pressurizing and damaging otherwise acceptable pipe.
D. Hydrostatic Pressure Testing
1.
2.
3.
Contractor shall use a hydrostatic test pump specifically designed for
performing hydrostatic pressure tests on pipe.
Clean potable water shall be used as the testing medium to fill the pipes.
Pipe shall be tested at 1.5 times the rated working pressure of the pipe or
the lowest rated pressure of any component of the system being tested.
In no case exceed maximum allowable pressure for any pipeline
component, including valves, fittings, and instruments.
File No. 3066.09
High-Density Polyethylene Pipe 15210 - 10 of 13 December 2017
