UPDATED 26 NOV 2007

Document Sample
UPDATED 26 NOV 2007 Powered By Docstoc
					                                                                                                          UPDATED: 26 NOV 2007

             FIREMAIN PRESSURE CONTROL VALVE (PCV) CHECK SHEET (DDG 51 CLASS ONLY)
                                 FOR USS ____________________
                                      DATE:____________

REF:      (A) DDG SIB S9DDG-CZ-SIB-030
          (B) BIW TEST PROCEDURE

A. INSPECT FIREMAIN PRESSURE CONTROL VALVE (PCV):
1. Is the duplex gage on the Cascade Orifice Resistive Device (CORD) in good working order?      Ref. A
2. Are the CORD and associated piping systems lagged and in good condition?                      Ref. A
3. Is the GPM flow placard posted near the duplex gage?                                          Ref. A
4. Is the regulator attached to the cla-valve in good working order?                             Ref. A
5. Is the cla-valve is good working order?                                                       Ref. A
6. Is the valve labeled (Valve Number)?                                                          Ref. A
7. Is the firemain pressure control valve (PCV) aligned for proper operation?                    Ref. A


B. TEST FIREMAIN PRESSURE CONTROL VALVE (PCV):
1. Ensure the PCV is aligned for proper operation.                                               Ref. B
2. Provide normal loads of 200 gpm or less on the firemain system with one firepump online.      Ref. B
3. Observe the PCV valve. The valve should be at least partially open and the upper firemain     Ref. B
header pressure should be at approximately 150 psi. Firemain pressure should be read from
gages in Repair 2, Repair 5, and from the TAC-4 console in Repair 5. (Note: Actual position of
the PCV can only be verified if the valve has an installed stem and sight glass.)
4. Gradually increase firemain system loads to about 1000 gpm. As loads are increased, verify    Ref. B
the PCV closes and remains fully closed when the FM header pressure drops to 150 psig or
below (dp at gauge FM-GA-61 should read zero). In order to increase loads for this step,
recommend using any mainspace eductor. Ensure that the bilge suction valves are closed.
5. Start a second firepump to verify the PCV / CORD will pass about 500 gpm at full open         Ref. B
position. (Note that the header pressure may go above 150 psig in this case since the PCV is
designed for one pump in operation.)
6. Secure the second firepump and return to the operating condition as stated in step B.2.       Ref. B



 REMARKS:




Assessor(s): ____________                                                                __ Date: _______________