NOTE: Indicate piping, type of connection and
equipment, such as a test header with hose valves,
required for flow testing of the backflow preventer
at full system demand as required by NFPA 13.
Arrangement of test assembly should be coordinated
with the installation.
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Double-check backflow prevention assembly shall comply with ASSE 1015. The
assembly shall have a bronze, cast-iron or stainless steel body with
flanged ends. The assembly shall include pressure gauge test ports and
OS&Y shutoff valves on the inlet and outlet, 2-positive-seating check valve
for continuous pressure application, and four test cocks. Assemblies shall
be rated for working pressure of [1034] [1207] [_____] kPa [150] [175]
[_____] psi. The maximum pressure loss shall be 40 kPa 6 psi at a flow
rate equal to the sprinkler water demand, at the location of the assembly.
A test port for a pressure gauge shall be provided both upstream and
downstream of the double check backflow prevention assembly valves.
PART 3
EXECUTION
3.1
FIRE PROTECTION RELATED SUBMITTALS
The Fire Protection Specialist shall prepare a list of the submittals from
the Contract Submittal Register that relate to the successful installation
of the sprinkler systems(s). The submittals identified on this list shall
be accompanied by a letter of approval signed and dated by the Fire
Protection Specialist when submitted to the Government.
3.2
INSTALLATION REQUIREMENTS
The installation shall be in accordance with the applicable provisions of
NFPA 13, NFPA 24 and publications referenced therein.
3.3
INSPECTION BY FIRE PROTECTION SPECIALIST
The Fire Protection Specialist shall inspect the sprinkler system
periodically during the installation to assure that the sprinkler system
installed in accordance with the contract requirements. The Fire
Protection Specialist shall witness the preliminary and final tests, and
shall sign the test results. The Fire Protection Specialist, after
completion of the system inspections and a successful final test, shall
certify in writing that the system has been installed in accordance with
the contract requirements. Any discrepancy shall be brought to the
attention of the Contracting Officer in writing, no later than three
working days after the discrepancy is discovered.
3.4
ABOVEGROUND PIPING INSTALLATION
3.4.1
Protection of Piping Against Earthquake Damage
The system piping shall be protected against damage from earthquakes.
Seismic protection shall include flexible and rigid couplings, sway bracing,
seismic separation assemblies where piping crosses building seismic
separation joints, and other features as required by NFPA 13 for protection
of piping against damage from earthquakes.
SECTION 13935A
Page 23
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