NFPA 24. This includes the requirement to flush the lead-in connection to
the fire protection system at a flow rate not less than the maximum water
demand rate of the system.
3.5.2
The underground and aboveground piping systems, including AFFF concentrate,
shall be hydrostatically tested in accordance with NFPA 13 at not less than
1379 kPa 200 psi, or 345 kPa 50 psi in excess of maximum system operating
pressure, for 2 hours. There shall be no visible leakage from the piping
when the system is subjected to the hydrostatic test.
3.5.3
Alarm Check and Automatic Water Control Valves
Each valve shall be tested to verify operation in accordance with
manufacturer's published operating instructions. This shall include tests
of valves and switches connected thereto.
3.5.4
Nozzles
Nozzles shall be discharge tested for proper operation and coverage.
Oscillating nozzles shall be operated to verify that angle of elevation,
angle of oscillation, and discharge range, are in accordance with
requirements.
3.5.5
AFFF Concentrate System
Tests shall be conducted under the supervision of a technical
representative employed by the AFFF concentrate manufacturer. The
complete AFFF concentrate system shall be adjusted and tested to assure
proper operation. Test results, including all pressure settings and
readings, shall be recorded on an appropriate test form signed and dated by
manufacturer's representative certifying that the system is in compliance
with contract requirements and the manufacturer's recommended practices.
Testing shall include, but not be limited to, the following:
a.
Filling the AFFF concentrate tank.
b.
Adjustment of pressure sustaining valves, pump relief valves, and
proportioners.
c.
Collection of AFFF samples and testing with a conductivity meter
to verify proportioning accuracy.
d.
Testing AFFF concentrate pumps for proper automatic operation.
This shall include start and stop settings, automatic shutoff, and
relief valve operation.
e.
Testing low liquid level alarms and pump shutoff.
f.
Other operational checks recommended by the AFFF proportioner
manufacturer.
3.5.6
Control System Tests
**************************************************************************
NOTE: The specified tests are based upon preaction
and deluge systems with integral detection and
control systems. Revise to suit applications using
SECTION 13955A
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