ML17250B295

Rev 8 to EOP AP-CCW.3, Loss of CCW - Plant Shutdown

ML17250B295
Person / Time
Site:	Ginna
Issue date:	06/03/1993
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17250B293	List: ML17250B291 ML17250B294 ML17250B295 ML17250B296 ML17250B297 ML17250B299 ML20045F670
References
AP-CCW.3, NUDOCS 9307080214
Download: ML17250B295 (10)

Text

EOP:

AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV:

8 PAGE 1 of 8 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE jd

~ra

~

/(4 PLANT SUPERINTENDENT 0-+la EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

9307080214 930h28 PDR ADQCK 05000244 PDR

EOP:

AP-CCW.3 TITLE:

LOSS OF CCW - PLANT SHUTDOWN REV:

8 PAGE 2 of 8 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.

ENTRY CONDITIONS This procedure may be entered from:

a.

AP-CCW.1, LEAKAGE INTO THE COMPONENT COOLING LOOP, or b.

AP-ELEC. 3, LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW 350'F), or c.

AP-RHR.1, LOSS OF RHR, or d.

AP-RHR.2, LOSS OF RHR WHILE OPERATING AT REDUCED RCS INVENTORY CONDITIONS, when CCW malfunction indicated.

2.

SYMPTOMS -

The symptoms of LOSS OF CCW

PLANT SHUTDOWN are:

a.

Annunciator A-6, CONT SPRAY PUMP COOLING WATER OUT LO FLOW 15 GPM, lit, or b.

Annunciator A-7, (A-15),

RCP A (B)

CCW RETURN HI TEMP OR LO FLOW 165 GPM 125'F, lit, or c.

Annunciator A-9, RHR PUMP COOLING WATER OUTLET LO FLOW 15 GPM, lit, or d.

Annunciator A-13, CCW SURGE TANK LO LEVEL 41.24, lit, or e.

Annunciator A-14, SAFETY INJ PUMPS COOLING WATER OUT LO FLOW 25 GPM, lit, or

'I f.

Annunciator A-17, MOTOR OFF RCP CCWP, lit, or g.

Annunciator A-22, CCW PUMP DISCHARGE LO PRESS 60 PSI, lit, or h.

Annunciator A-24, (A-32),

RCP A (B)

OIL LEVEL

+/- 1.25, lit, or i.

Annunciator A-31, CCW SYSTEM LO FLOW 1800 GPM, lit.

EOP:

AP-CCW.3 TITLE:

LOSS OF CCW PLANT SHUTDOWN REV:

8 PAGE 3 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED CAUTION o

IF CCW FLOW TO A RCP IS INTERRUPTED FOR GREATER THAN 2 MINUTES OR IF EITHER RCP MOTOR BEARING TEMPERATURE EXCEEDS 200'F, THEN TRIP THE AFFECTED RCP.

o IF CCW IS LOST, THEN SEAL INJECTION SHOULD BE MAINTAINED TO THE RCP(S)

UNTIL RCS TEMPERATURE IS LESS THAN 200'F, OR UNTIL CCW IS RESTORED.

NOTE:

o If leakage from the CCW system is indicated, then refer to SC-6, HAZARDOUS AND MIXED WASTE MANAGEMENT AND CONTROL, for guidance.

o If CCW is lost to operating CS, RHR, or SI pumps, they may be left running for brief periods while isolating a CCW leak.

S 1

Check CCW Pump Status:

o Both CCW pump.breaker white disagreement lights EXTINGUISHED o

Annunciator A-17, MOTOR OFF, RCP CCWP EXTINGUISHED IF a CCW pump has tripped, THEN perform the following:

a.

Ensure the other CCW pump is running.

b. Attempt to reset and start the affected CCW pump if required for cooling.

c. IF no CCW pumps available, THEN go to Step 4.

2 Verify CCW Surge Tank Level Normal:

o Annunciator A-13, CCW SURGE TANK LO LEVEL 41.2%

- EXTINGUISHED o

Level -

STABLE IF CCW surge tank level is decreasing, THEN perform the following:

a.

Open RMW to CCW surge tank, MOV-823.

b. Start both RMW pumps.

c. Dispatch AO to AUX BLDG to investigate for CCW leak

EOP:

AP-CCW.3 TITLE:

LOSS OF CCW - PLANT SHUTDOWN REV:

8 PAGE 4 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 3 Verify Annunciator A-22, CCW PUMP DISCHARGE LO PRESS 60 PSIG EXTINGUISHED Dispatch AO to the AUX BLDG to perform the following:

a. Throttle CCW to RHR Hxs as necessary to restore CCW pump discharge pressure.

MOV-738A

~ MOV-738B

b. Investigate for CCW leaks.

CAUTION IF ANY RCP IS TRIPPED, THEN SHUTDOWN MARGIN REQUIREMENTS SHOULD BE VERIFIED (REFER TO 0-3.1, BORON CONCENTRATION FOR THE XENON FREE ALL RODS IN, MOST REACTIVE ROD STUCK OUT SHUTDOWN MARGIN).

4 Check RCS Temperature STABLE OR DECREASING IF S/G cooling available, THEN control S/G ARVs to stabilize RCS temperature.

IF S/G ARVs do NOT provide adequate

cooling, THEN perform the following:

a.

Stop all but one RCP.

b. Initiate S/G blowdown from both S/Gs.

c. Maintain both S/G levels stable by controlling AFW flow.

EOP:

AP-CCW.3 LOSS OP CCW PLANT SHUTDOWN REV:

8 PAGE 5 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 5 Verify CCW Surge Tank Level GREATER THAN 10%

Perform the following:

a.

Stop any running RCP.

b. Pull stop both CCW pumps.

c. Verify natural circulation (Refer to Attachment NC),

6 Check CCW Cooling To RCPs:

a.

RCPs

- ANY RUNNING b.

Check RCP indications:

o Annunciator A-7 (A-15),

RCP A (B)

CCW RETURN HI TEMP OR LOW FLOW 165 GPM 125'F EXTINGUISHED o

Verify RCP motor bearing temperatures (PPCS GD -

RCPS or RK-30A recorder)

- LESS THAN 200'F a.

Go to Step 7.

b. IF CCW lost to RCF(s),

THEN perform the following:

1) Stop the affected RCP(s).

2) IF no RCPs running, THEN verify natural circulation (Refer to Attachment NC).

7 Check CCW System Leakage-ANY LEAKAGE INDICATED Go to Step 11.

EOP:

AP-CCW.3 TITLE:

LOSS OF CCW PLANT SHUTDOWN REV:

8 PAGE 6 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 8

Check For CCW Leakage In CNMT:

a.

Check CNMT sump A level:

o Level -

STABLE o

Sump A pumps

- OFF a. IF abnormal increase in CNMT sump level, THEN perform the following:

1) Direct HP Tech to sample sump A for chromates.

2) Prepare to make CNMT entry to check for CCW leak, b.

RCP oil levels

- STABLE

b. IF any RCP oil level increasing uncontrollably, THEN perform the following:

1) Stop affected RCP.

J

2) Close CCW supply and return for affected RCP(s).

~ RCP A, MOV-749A and MOV-759A

~ RCP B, MOV-749B and MOV-759B

3) IF no RCPs running, THEN verify natural circulation (Refer to Attachment NC).

9 Check for CCW Leakage In AUX BLDG:

o Start frequency of AUX BLDG sump pump(s)

NORMAL (Refer to RCS daily leakage log) o Waste holdup tank level STABLE OR INCREASING AS EXPECTED Dispatch AO to investigate AUX BLDG for CCW leakage.

EOP:

AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV:

8 PAGE 7 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 10 Verify CCW System Leak IDENTIFIED AND ISOLATED Perform the following:

a. Direct HP Tech to sample CCW HX SW outlet for chromates.

b. Return to Step 2.

ll Check CCW Valve Alignment-AS REQUIRED FOR PLANT CONDITIONS Realign valves as necessary to restore CCW to individual components.

12 Evaluate Plant Conditions:

a.

RHR normal cooling - IN SERVICE b.

Check RCS Cooling:

o RCS temperature

- STABLE OR DECREASING o

CCW system status

- ADEQUATE FOR RHR NORMAL COOLING

a. Adjust S/G ARVs as necessary to stabilize RCS'emperature and go to Step 13.

b. IF CCW inadequate for RHR normal

cooling, THEN go to AP-RHR.1, LOSS OF RHR or AP-RHR.2, LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS.

NOTE:

Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.

13 Notify Higher Supervision

EOP:

AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV 8

PAGE 8 of 8 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 14 Return To Procedure Or Guidance Xn Effect

-END-

EOP:

AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV 8

PAGE 1 of 1

AP-CCW.3 APPENDIX LIST TITLE PAGES 1)

FIGURE MIN SUBCOOLING 2)

ATTACHMENT NC

l'y EOP:

AP-CCW.3 LOSS OF CCW PLANT SHUTDOWN REV 8

PAGE l 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 1500 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 CNMT 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)