ML17261A977
| ML17261A977 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-CW.1, NUDOCS 9003080327 | |
| Download: ML17261A977 (12) | |
Text
EOP:
AP-CW.1 TITLE:
LOSS OF A CIRC WATER PUMP REV:
4 PAGE 1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE aP P
T SUPERINT ND NT EFFECTIVE DATE QA~ NON-QA REVIEWED BY:
CATEGORY 1. 0 GlNNASTAT(PN START:
DATE TIME TlME:
COMPLETED:
DATE 9003080327 900227 PDR ADQCK 05000240 F
PNU
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AP-CW. 1 LOSS OF A CIRC WATER PUMP REV 4
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.
SYMPTOMS The symptoms of LOSS OF A CIRC WATER PUMP are; a.
Annunciator J-16 MOTOR OFF CW-EH, EMERG OIL, SEAL OIL BU alarm, or b.
Annunciator G-8 4 KV MOTOR OVERLOAD alarm.
I k
EOP:
AP-CW.1 TITLE:
LOSS OF A CIRC WATER PUMP REV 4
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.
NOTE:
Step l is an Immediate Action Step.
O 1
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 VITHOUT RX TRIP REQUIRED.
EOP:
AP-CW. 1 TITLE:
LOSS OF A CIRC WATER PUMP REV:
4 PAGE 4 of 6
STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION TURBINE LOAD DECREASE SHOULD BE COMPLETED AS QUICKLY AS POSSIBLE CONSISTANT WITH MINIMIZINGTHE AMOUNT OP 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 LBSS THAN 50X, THEN trip the reactor and go to E-O, REACTOR TRIP or SAPBTY INJECTION.
3 Check ROD CONTROL IN AUTO AND STEPPING IN TO CONTROL TAVG Manually insert'control rods to control Tavg.
4 Check S/G Levels:
a.
S/G levels - GREATER THAN 30X AND STABLE OR INCREASING b.
S/G levels - LESS THAN 67X OR PEEDWATER ISOLATED
- a. Restore S/G Level
- 1) Decrease turbine load and minimize steam dump as necessary.
- 2) IP MFP suction press and flow are low, THEN:
o Verify standby condensate pump starts.
o Verify condensate bypass valve opens.
o Close trim valve to control pressure.
- b. IP necessary, take manual control of the MPW regulation valves.
EOP:
AP-CW.1 TITLE:
LOSS OF A CIRC WATER PUMP REV 4
PAGE 5 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5 Verify Tavg Trending To Tref:
o Auto rod control - CONTROLLING TAVG o
Manually insert/withdraw control rods as necessary to control Tavgo 6 Verify Condenser Vacuum GREATER THAN 25 INCHES Hg AND STABLE OR INCREASING IP condenser vacuum less than 25 inches Hg OR decreasing, THEN refer to AP-TURB.4, LOSS OP CONDENSER VACUUM.
7 Verify Proper Rod Control Bank Positioning:
- a. All bank insertion limit alarm-EXTINGUISHED b.
bX within i 5X of target value
- a. Borate to clear insertion limit alarms.
(Refer to AP-CVCS.2, IMMEDIATE BORATION.)
- b. Borate/dilute to restore M to within limits.
'1
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AP-CW. 1 LOSS OF A CIRC WATER PUMP REV:
4 PAGE 6 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8 Establish Whether Tripped CW Pump Will Restart:
a.
Have AO check the CW pump and CV pump breaker for obvious damage prior to CV pump restart NO PUMP OR BREAKER DAMAGE OBSERVED
- b. Reset tripped CV pump start/stop switch
- c. Restart tripped CV pump -
CV PUMP RESTARTED
- a. IF damage is evident, THEN:
1)
Do NOT restart CV pump.
- 2) Notify electricians.
- 3) Adjust waterbox outlet valves to bala'nce condenser cooling.
(Refer to T-SA, Step 5.6, STARTUP AND SHUTDOVN "A" AND "B" CIRCULATING WATER PUMPS).
4)
Go to Step 9.
- c. IF CV pump will NOT restart, THEN:
- 1) Notify electricians.
- 2) Ad]ust waterbox outlet valves to balance condenser cooling.
(Refer to T-SA, Step 5.6, STARTUP AND SHUTDOWN "A" AND "B" CIRCULATING VATER PUMPS.)
9 Establish - APPROPRIATE OPERATING'ONDITIONS (Refer to 0-5.1, LOAD REDUCTION)
-END-
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