FPACHKVV-SA Fire Protection Alarm Check Valves and Acc. - Semi-Annual

Application:                                                Man Hours .5

This applies to all sprinkler valves.

Special Instructions:

The work required may cause the activation of an alarm and/or a supervisory
signal.  (See FPAUTOFDCT/AL-A).  The field office manager and the control center
or fire department that will receive the alarm and/or signal must be notified
prior to start of work.  If drains are not piped to outside of building, take
necessary steps to prevent water damage during full flow drain test.  Rate of
discharge from 2-inch drain may exceed capacity of floor drain.  Preventive
maintenance should be scheduled for the control valve (main supply) of the wet
pipe sprinkler system at this time.  (See Inspections FPFPSTINDW-A &
FPCNTRVV>4-A).  Review manufacturer's instructions.

Items to Check & Initial Completion:

1. ___ Record static pressure (pressure on supply side gauge).
2. ___ Check for proper water flow through 2-inch drain.  If
       water flow is weak, (considerable drop in water pressure when 2-
       inch is wide open), supply valves may not be fully open or there
       may be other piping obstructions.
3. ___ Record the flow full drain residual pressure (lowest
       pressure on supply side gauge).
4. ___ Close 2-inch drain.
5. ___ Close main supply valve for the sprinkler system, then open
       2-inch drain valve.
6. ___ Immediately close drain valve when water pressure on
       incoming side of alarm check valve has dropped to 10 to 20 psi.
       If pressure rises within one minute, main supply valve is not
       seating properly.  In such case, open drain valve and
       alternately open and close supply valve several times in an
       attempt to flush the valve seat.  If not successful, supply
       valve needs to be repaired.
7. ___ With supply valve open, check operation of alarm check
       valve, water motor gong and its drain, and all other alarm or
       supervisory signals, such as water flow paddle alarms, pressure
       switches, etc. by flowing water through inspector's test both at
       valve and at remote connection.
8. ___ When applicable, check that excess pressure, booster,
       jockey, and fire pumps equipped with automatic start are
9. ___ Perform any other steps required in manufacturer's
10.___ Check that water flow through water motor gong is stopped to
       ensure that clapper of alarm check valve is properly seated.
11.___  Record static pressure (pressure on supply side gauge).
12.___  Perform internal inspections of alarm valves when normal testing
        procedures indicate the need.  Examine valve body for tuberculation and
        check freedom of clapper operation.  Replace clapper facings or
        resurface seat rings, if necessary.
13.___  Clean up and remove all debris from work area.

Tools & Materials:

1.  Standard Tool Kit
    Plus Pipe wrenches to 24"
         Tubing cutters
         Flaring tool
         Small acetylene outfit
         Packing tool kit and packing
         3/4" socket set
         Crescent wrenches to 14"

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