ML17263A256
| ML17263A256 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/14/1993 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A255 | List: |
| References | |
| AP-CW.1, NUDOCS 9305140013 | |
| Download: ML17263A256 (7) | |
Text
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EOP:
AP-CW.1 LOSS OF A CIRC WATER PUMP REV:
5 PAGE 1 of 6
ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE I
PLANT SUPERINTENDENT I
i
/
CATEGORY 1.0 REVIEWED BY:
EFFECTIVE DATE 9305140013 930505 PDR ADOCK 05000244 PDR
EOP:
AP-CW.1 LOSS OF A CIRC WATER PUMP REV:
5 PAGE 2 of 6 A.
PURPOSE This procedure provides the actions necessary to respond to a loss of a circ water pump while the plant is at power.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from AP-TURB.4, LOSS OF CONDENSER VACUUM, when circulating water system malfunction indicated.
2.
SYMPTOMS The symptoms of LOSS OF A CIRC WATER PUMP are; a.
Annunciator Z-16 MOTOR OFF CW-EH EMERG OIL SEAL OIL BU alarm, or b.
Annunciator G-8 4
KV MOTOR OVERLOAD alarm.
EOP:
AP-CW.1 TITLE:
LOSS OF A CIRC WATER PUMP REV:
5 PAGE 3 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF, AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI
- OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.
l Verify One Circ Water Pump RUNNING IF power greater than 8%,
THEN verify Rx trip and go to E-O, REACTOR TRIP OR SAFETY INJECTION.
IF power LESS THAN 8%,
THEN verify turbine trip and go to AP-TURB.l, TURBINE TRIP WITHOUT RX TRIP REQUIRED.
CAUTION TURBINE LOAD DECREASE SHOULD BE COMPLETED AS QUICKLY AS POSSIBLE CONSISTANT WITH MINIMIZINGTHE AMOUNT OF STEAM DUMP OPERATION.
2 Place EH Control In MANUAL And Reduce Turbine Load To-LESS THAN 504 IF turbine load can NOT be reduced to LESS THAN 50%,
THEN trip the reactor and go to E-O, REACTOR TRIP OR SAFETY INJECTION.
NOTE:
Automatic rod control is desired, if available.
3 Check Rod Control:
o Rod control bank selector switch in AUTO o
Control rods stepping in as required Ensure rod control bank selector switch in manual and drive rods in as necessary to control Tavg and minimize condenser steam dump.
EOP:
AP-CWe1 LOSS OF A CIRC WATER PUMP REVT 5
PAGE 4 of 6
STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Monitor S/G Level Control:
o S/G levels
- TRENDING TO PROGRAM o
MFW regulating valves CONTROLLING IN AUTO Per form the following:
- a. IF MFP suction pressure and flow are low, THEN perform the following:
o Verify standby condensate pump starts.
o Verify condensate bypass valve opens.
o Close trim valve to control pressure.
- b. IF S/G level NOT controlling in AUTO, THEN take manual control of the MFW regulating valves.
5 Verify Tavg TRENDING TO TREF Place ROD CONTROL BANK SELECTOR switch to MANUAL and insert or withdraw control rods as necessary to control Tavg.
6 Check Condenser Vacuum:
o Vacuum -
GREATER THAN 25 INCHES HG IF condenser vacuum less than 25 inches Hg OR decreasing, THEN refer to AP-TURB.4, LOSS OF CONDENSER VACUUM.
o Vacuum - STABLE OR INCREASING
Eop:
AP-CW.1 LOSS OF A CIRC WATER PUMP REV:
5 PAGE 5 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7
Dispatch AO To Align The Circulating Water System For One Pump Operation (Refer to T-SA, STARTUP AND SHUTDOWN A AND B CIRCULATING WATER PUMPS).
8 Establish Stable Plant Conditions:
a.
PRZR pressure
- TRENDING TO 2235 PSIG
- a. Verify proper operation of PRZR heaters and spray or take manual control of PRZR pressure controller 431K.
IF pressure can NOT be controlled, THEN refer to AP-CVCS.2, IMMEDIATE BORATION.
b.
PRZR level - TRENDING TO PROGRAM c.
Rod insertion limit alarms-EXTINGUISHED
- d. NIS PR EI - WITHIN 2 5%
OF TARGET VALUE e.
Steam dump valves CLOSED
- b. Ver'ify proper operation of charging pump speed controllers OR take manual control of speed controllers to control PRZR level.
- c. Borate as necessary and withdraw control rods to clear insertion limit alarms (refer to affected rod bank alarm response procedures if necessary).
- d. Borate/dilute to restore AI to within limits.
e.
Ensure proper operation of steam dump control system.
EOP:
AP-CW. 1 LOSS OF A CIRC WATER PUMP REV 5
PAGE 6 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9
Evaluate Status Of Affected CW Pump:
- b. Notify electricians 10 Notify Higher Supervision 11 Go To 0-5.1, LOAD REDUCTION/
For Additional Guidance
-END-