ML17261B048
| ML17261B048 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/28/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| AP-CCW.1, NUDOCS 9004200601 | |
| Download: ML17261B048 (19) | |
Text
EOP:
AP-CCW.1 T1TLE:
LEAKAGE INTO THE COMPONENT COOLING LOOP REV 7
PAGE 1 of 11 ROCHESTER GAS AND ELECTRIC CORPORA ON GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIE 4 Q-Q3 -10 POR REVIEW DATE NT UP IN EN ENT EFFECTIVE DATE G 1Nf'q i Q i Q'P fQN QA~ NON-A
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REVIEWED BY CATEGORY 1.0 9004200601 900+PE~
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AP-CCW.1 LEAKAGE INTO THE COMPONENT COOLING LOOP REV:
7 PAGE 8 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Isolate Excess Letdown:
a.
Excess LTDN loop A cold to Hx AOV-310 -
CLOSED
- b. Excess LTDN (TI-122) HCV-123-CLOSED c.
Check CCV surge tank level-STABLE d.
Go to Step 18
- c. IF CCV surge tank level continues to increase, THEN restore excess letdown to service and go to Step 11.
ll Check RMW to CCW Surge Tank:
o MOV-823 -
CLOSED o
RMW pump(s)
NOT RUNNING IF RMV to CCW surge tank MOV-823
'pen OR RMV pump running, THEN:
- a. Close RMW to CCV surge tank MOV-823.
b.
Shut off running RMW pumps.
- c. IF CCV inleakage stops, THEN go to Step 19.
- d. IF CCW inleakage continues, go to Step 12.
C EOP:
AP-CCN.1 TITLE:
LEAKAGE INTO THE COMPONENT COOLING LOOP REV 7
PAGE 9 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED o
Sample return NORMAL latest 3)
Hx (PI-603) common CCW flow from sample Hxs-(Normal flow, found on Aux Bldg log sheet, 3 of 12 Check For Sample Hx Leaks In Nuclear Sample Room:
o Sample Hx (TI-602) common CCW return temperature from sample Hxs - NORMAL (Normal temperature found on latest Aux Bldg log
- sheet, 3 of 3)
Determine which sample Hx CCW outlet temperature is high, THEN:
- a. Isolate the affected HX.
b.
Check if inleakage has stopped to CCW surge tank. If inleakage has stopped, go to Step 18.
IP inleakage continues, go to Step 13.
CAUTION IP AN RHR PUMP OR HX IS REMOVED PROM SERVICE, REFER TO TECH SPEC SECTIONS 3.1.1.1 AND 3.3.1 POR LCO.
ONE RHR TRAIN SHOULD BE OPERABLE AT ALL TIMES.
13 Check RHR System IN SERVICE Go to Step 16.
Observe caution prior to Step 16.
14 Place 1
RHR Loop Out Of Service And Isolate The Idle Pump And Hx:
a.
RHR loop -
REMOVED FROM SERVICE
- b. Idle RHR pump and Hx - ISOLATED
EOP:
AP-CCW.1 TITLE:
LEAKAGE INTO THE COMPONENT COOLING LOOP REV 7
PAGE 10 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Check If CCW Inleakage Has Stopped:
a.
CCW surge tank level - STABLE
- a. IF CCW inleakage continues, THEN:
b.
Go to Step 18 o
Restore isolated RHR loop to service and repeat Steps 14 and 15 for the other RHR loop.
o IF leakage is not from either RHR loop, THEN restore both loops to operable and go to Step 16.
CAUTION IF AN SI OR CS PUMP IS TO BE REMOVED FROM SERVICE DURING AN EMERGENCY CONDITION, THEN CONSULT WITH THE TSC STAFF PRIOR TO REMOVING PUMP.
16 Check Any SI Or Containment Spray Pumps RUNNING IF no SI or CS pumps running, THEN go to Step 19.
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AP-CCW. 1 TITLE:
LEAKAGE INTO THE COMPONENT COOLING LOOP REV 7
PAGE ll of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Check For SI Or CS Pump Leakage:
a.
- b. Isolate the pump stopped in Step 17a
- c. Check CCW surge tank level-STABLE
- c. Repeat Steps
- 17a, b and c until either:
o All pumps are checked.
o CCW surge tank level stable.
IF inleakage can NOT be located, THEN go to Step 19.
18 Place The Affected Component IN AN ISOLATED AND HELD CONDITION 19 Verify THAT PLANT OPERATION IF plant shutdown is required, THEN CAN CONTINUE refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN.
20 Complete NOTIFICATION TO HIGHER SUPERVISION
-END-
EOP:
AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV:
7 PAGE 1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE P /9"
. L3 P
T SUPERIN EN ENT i4-j 9"I')
EFFECTIVE DATE 61NNA STATlON START:
DATE QA k'ON-QA CATEGORY 1.0 REVIEWED BY:
TiME COMPLETED:
DATE
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TlME:
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AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV:
7 PAGE 2 of 6 A.
PURPOSE This procedure provides the steps necessary to respond to a loss of CCW while the plant is shut down.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of Loss of CCW - Plant Shutdown are:
a.
Annunciator A-13, COMP COOLING SURGE TANK LO LEVEL 41.24 alarm, or b.
Annunciator A-22, CCW PUMP DISCHARGE LO PRESS 60 PSI alarm, or c.
Annunciator A-31, CCW SYSTEM LO FLOW 1800 GPM alarm, or d.
Annunciator A-17, MOTOR OFF RCP CCP alarm, or e.
Annunciator A-9, RHR PUMP COOLING WATER OUTLET FLOW 15 GPM alarm, or f.
Annunciator A-6, CONT SPRAY PUMP COOLING WATER OUT LO FLOW 15 GPM alarm, or g.
Annunciator A-14, SAFETY INJ PUMPS COOLING WATER OUT LO FLOW 25 GPM alarm, or h.
Annunciator A-7, (A-15),
RCP 1A (1B)
CCW RETURN HI TEMP OR LO FLOW 165 GPM 125'F alarm.
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AP-CCW.3 LOSS OF CCW - PLANT SHUTDOWN REV:
7 PAGE 3 of 6 STEP ACTION/EXPECTED RESPONSE RBSPONSB NOT OBTAINED 1
Check CCW Pump Status:
o Neither pump breaker white disagreement light - IS LIT o
Annunciator alarm A-17, Motor Off, RCP CCP - EXTINGUISHED UI 2
Check CCW Pump Discharge Lo Pressure 60 PSI ANNUNCIATOR ALARM A 22'XTINGUISHED IF 2 pumps were previously running and one has tripped, THEN reset and attempt to restart the tripped pump, if required for cooling.
IF one pump was previously running and it tripped, THEN ensure auto start of the standby pump or start pump manually.
IF CCV pump discharge pressure is low, THEN:
t a.
Check closed or close CCV to RHR Hx A(B) MOV-738A(B) unless on.-
RHR cooling.
- b. Dispatch an aux operator to the aux bldg to check discharge pressure locally and to look for leaks.
3 Check CCW.To Operating RCPs:
- a. Annunciator A-7 (A-15),
RCP 1A (1B)
CCV RETURN HI TBMP OR LOV FLOV 165 GPM 125'F-EXTINGlJISHED
- b. Verify -
NO RCP MOTOR BEARING TEMPERATURE ALARMS IF CCV is lost to operating RCPs for GREATBR THAN 2 minutes OR IF an RCP motor bearing temperature exceeds 200'F, THEN trip the affected RCP and see Attachment A, if natural circulation is required.
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AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV 7
PAGE 4 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Check For CCW Leak:
- a. Verify CCW Surge Tank Level Normal - Annunciator A-13, COMP COOLING SURGE TANK LO LEVEL 41.2X ALARM EXTINGUISHED AND LEVEL STABLE b.
Go to Step 8
- a. IF CCW surge tank level is decreasing, THEN:
- 1) Open RMW to CCW surge tank MOV-823 and start RMW pump 1A(1B) as necessary to fill the tank.
- 2) IF CCW surge tank level can NOT be restored, THEN:
a) Stop any running RCP.
b) Pull stop both CCW pumps.
c) Verify Natural Circulation as per Attachment A if required.
3)
Go to Step 5.
EOP:
AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV:
7 PAGE 5 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5
Check for CCW Leakage In CNMT:
a.
CNMT Sump A Levels - NOT INCREASING NOTICABLY b.
RCP Oil Levels - NOT INCREASING
- 1) Direct Health Physics Tech to sample Sump A for Chromates.
- 2) Prepare to make CNMT entry to check for CCV leak.
- b. IF any RCP oil level increasing:
uncontrollably, THEN:
- 1) Stop affected RCP.
- 2) Close CCV supply and return for affected RCP(s)
(MOV-749A and MOV-759A for A RCP; MOV-749B and MOV-759B for B RCP)
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- 3) Verify Natural Circulation as per Attachment A if required.
6 Check for CCW Leakage In AUX BLDG o
Start frequency of AUX BLDG sump pump(s) - INCREASED o
Waste':.holdup tank level-UNEXPLAINED INCREASE IF no leakage indicated in AUX BLDG, THEN:
b.
RETURN to step 3.
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AP-CCW.3 TITLE:
LOSS OF CCW PLANT SHUTDOWN REV:
7 PAGE 6 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AN RCP(S) IS TRIPPED DUE TO A LOSS OF CCV, SEAL INJECTION SHOULD BE MAINTAINED TO THE IDLE RCP(S)
UNTIL RCS TEMPERATURE IS LESS THAN 200'F, OR UNTIL CCV IS RESTORED.
NOTE: If CCV is lost to operating CS, RHR, or SI pumps, they may be left running for brief periods while isolating a CCV leak.
7 Establish SOURCE OF CCW LEAKAGE AND ISOLATE 8
Check CCW Valve Alignment-AS REQUIRED FOR PLANT CONDITIONS 4
Realign valves as necessary to restore CCV to individual components.
9 Verify CCW Available TO ANY IF RHR in operation and CCV is lost OPERATING RHR HX to RHR HX, GO TO AP-RHR.1, LOSS OF RHR.
10 Complete HIGHER SUPERVISION NOTIFICATION NOTE:
REF1gt TO 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.
ll 'Establish Further Guidance o
RETURN TO - APPROPRIATE OPERATING PROCEDURES
AP-CCW.3
'LOSS OF CCW - PLANT SHUTDOWN REV:
7 PAGE 1 of 1 ATTACHMENT A The following conditions support or indicate natural circulation flow:
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RCS subcooling based on core exit TCs-GREATER THAN REQUIREMENTS OF FIGURE MIN SUBCOOLING.
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S/G pressures STABLE OR DECREASING.
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RCS hot leg temperatures STABLE OR DECREASING
~ (ADMINISTRATIVELIMIT FOR COOLDOWN ON NATURAL CIRCULATION IS 25'F/HR.)
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Core exit TCs STABLE OR DECREASING.
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RCS cold leg temperatures AT SATURATION TEMPERATURE FOR S/G PRESSURE.
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Both control rod shroud fans should be running for head cooling.
NOTE:
Ensure that PRZR heaters are restored within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of initiation of natural circulation, REFER TO ER-PRZR.1, RESTORATION OF PRZR HEATERS DURING BLACKOUT.
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AP-CCW.3 TITLE:
LOSS OF CCW - PLANT SHUTDOWN REV:
7 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADVERSE NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'F 200 250 300.
350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)