ML17261A985
| ML17261A985 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-RCS.2, NUDOCS 9003080335 | |
| Download: ML17261A985 (10) | |
Text
EOP:
AP-RCS.2 TITLE:
LOSS OF REACTOR COOLANT FLOW REV:
5 H
PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE A 0
T SUPER T
DENT 29 0
EFFECTIVE DATE QA~ NON-QA CATEGORY 1.0 REVIEWED BY:
6 INNASTAT(ON START:
DATE TIME C~A J ~g E t D DATE TIME:
3080335 900'~7 ADDCK ODOCOgyg
'PNU
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AP-RCS.2 LOSS OF REACTOR COOLANT FLOW REV:
5 PAGE 2 of 5 A.
PURPOSE This procedure provides actions required to stabilize plant conditions following a loss of reactor coolant flow.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of LOSS OF REACTOR COOLANT FLOW are; a.
Annunciator A-17, MOTOR OFF RCP, CCP alarm, or
'b.
,Annunciator F-24, RCS AVG DELTA T DEVIATION 3'F alarm, or c.
Annunciator F-7, (F-S),
LO TAVG 545'F alarm, or d.
Steam flow rapidly decreasing in one loop and rapidly increasing in the other loop.
e.
Annunciator B-29, RCP BREAKER CHANNEL ALERT, or f.
Annunciator B-27, (28),
LO FLOW CHANNEL ALERT.
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AP-RCS.2 T!TLE:
LOSS OF REACTOR COOLANT FLOW REV:
5 PAGE 3 of 5 STEP ACTION/EXPECTED RESPONSB RBSPONSE NOT OBTAINED CAUTION IF) AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS) E-0)
REACTOR TRIP, OR SAFETY INJECTION)
SHALL BE PERFORMED.
NOTE Steps 1 and 2 are IMMEDIATE ACTION steps.
1 Check Reactor Power LESS THAN P-8 (494) 2 Check RCS Flow:
o Bither RCP - RUNNING
-AND-o Associated Loop Flow - GREATER THAN 91X Ensure reactor trip and go to E-O, RBACTOR TRIP or SAFETY INJECTION.
IF power greater than 8X, THEN ensure reactor trip and go to E-O, REACTOR TRIP or SAFETY INJECTION, OR IF power, less than 8X, THEN verify natural circulation.
See Attachment NC; THEN go to Step 6.
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AP-RCS. 2 LOSS OF REACTOR COOLANT FLOW REV:
5 PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Place Rod Control Bank Selector IN MANUAL NOTE:
A substantial decrease in idle S/G level should be anticipated.
Also, swell should be anticipated in the operating S/G due to load pickup from the idle loop.
4 Check S/G Levels:
o Automatic controls restoring S/G levels - TO PROGRAM LEVEL IF either main feed regulating valve is NOT controlling its associated S/G level, THEN take manual control and ad)ust as necessary.
5 Decrease Reactor Power TO LESS THAN 84 (Refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN)
NOTE:
Temperatures in the loop with the stopped RCP will not be indicative of true Tavg AND hT values.
6 Establish And Maintain Stable Plant Conditions:
o PRZR pressure
- 2235 PSIG o
PRZR level - AT PROGRAM o
Tavg - AT Tref NOTE:
Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.
7 Check FOR THE CAUSE OF THE LOSS OF REACTOR COOLANT FLOW
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AP-RCS.2 LOSS OF REACTOR COOLANT FLOW REV 5
PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8
Complete APPROPRIATE MAINTENANCE PERSONNEL AND HIGHER SUPERVISION NOTIFICATION 9 Establish Further Guidance:
o Return to - APPROPRIATE OPERATING PROCEDURES
-END-
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