ML17250B130

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Rev 2 to FR-I.1, Response to High Pressurizer Level
ML17250B130
Person / Time
Site: Ginna 
Issue date: 04/09/1990
From: Widay J
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17250B096 List:
References
FR-I.1, NUDOCS 9004200752
Download: ML17250B130 (24)
v • d • e


Text

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FR-I.1 TITLE:

RESPONSE

TO HIGH PRESSURIZER LEVEL REV:

2 PAGE 1 of 11 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE P

N SUPERINT DE T pc.

EFFECTIVE DATE QA K NON-QA CATEGORY 1.0 G INNASTATION START:

DATE REVIEWED BY:

COMPLETED:

DATE 9004200752

,PDR ADDCK I P 900420 Wl 05000244 PNUQ TIME:

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PAGE 2 of 11 A.

PURPOSE This procedure provides actions to respond to a high PRZR level.

B.

ENTRY CONDITIONS/SYMPTOMS 1.

ENTRY CONDITIONS This procedure is entered from:

a.

F-0.6, INVENTORY Critical Safety Function Status Tree on a YELLOW condition.

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PAGE 3 of 11 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10-

~ R/hr.

1 Check RCS Hot Leg Temperature STABLE OR DECREASING Dump,,steam from intact S/G(s) to stabilize RCS temperature.

2 Verify Adequate SW Flow:

a. At least three SW pumps-RUNNING
b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
c. Verify AUX BLDG SW isolation valves - AT LEAST ONE SET OPEN

~ MOV-4615 and MOV-4734

~ MOV-4616 and MOV-4735

d. Verify CNMT RECIRC fans annunciator C-2, HIGH TEMPERATURE ALARM - EXTINGUISHED
a. Manually start pumps as power supply permits (258 kw each).

IF less than two SW pumps can be

operated, THEN perform the following:
1) Ensure SW isolation 2)

Go to Step 7.

c. Establish SW to AUX BLDG.

(Refer to Attachment AUX BLDG SW.)

d. Dispatch AO to locally throttle flow to CCW Hx to between 5000 gpm and 6000 gpm total flow.

C

.C Ml.~

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2 PAGE 4 of 11 STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 3

Establish IA to CNMT:

a. Verify non-safeguards busses energized from offsite power o

Bus 13 normal feed -

CLOSED

a. Perform the following:
1) Close non-safeguards bus tie breakers:

-OR-o Bus 15 normal feed - CLOSED

b. Verify SW isolation valves to turbine building -

OPEN

~ MOV-4613 and MOV-4670

~ MOV-4614 and MOV-4664

~ Bus 13 to Bus 14 tie

~ Bus 15 to Bus 16 tie 2)

WHEN bus 15 restored, THEN reset control room lighting.

b. Manually align valves.
c. Verify at least two air compressors

- RUNNING

d. Check IA supply:

o Pressure

- GREATER THAN 60 PSIG o

Pressure

- STABLE OR INCREASING

e. Reset both trains of XY relays for IA to CNMT AOV-5392
c. Manually start air compressors as power supply permits (75 kw each).

IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.

d. Perform the following:
1) Continue attempts to restore IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
2) Continue with Step 7.

WHEN IA restored, THEN do Steps 3e and f.

f. Verify IA to CNMT AOV-5392-OPEN

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2 PAGE 5 of 11 STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED CAUTION CHARGING AND LETDOWN FLOW SHOULD BE CAREFULLY CONTROLLED TO AVOID SUDDEN RCS PRESSURE CHANGES SINCE THE PRZR MAY BE WATER SOLID.

4 Check If Normal CVCS Operation Can Be Established

a. Verify IA restored:

o IA to CNMT (AOV-5392) -

OPEN o

IA pressure

- GREATER THAN 60 PSIG

a. Continue with-Step 7.

WHEN IA

restored, THEN do Steps 4

through 6.

b.

CCW pumps

- ANY RUNNING

b. Perform the following:
1) IF any RCP gl seal outlet temperature offscale high','-

THEN isolate CCW to"thermal barrier of affected RCP(s).

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

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

c. Verify instrument bus D-ENERGIZED
2) Manually start one CCW pump.
c. Energize MCC B.

IF MCC B NOT available, THEN perform the following:

1) Verify MCC A energized.
2) Place instrument bus D on maintenance supply.

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NOT OBTAINED 5

Check If Seal Return Flow Should Be Established:

a. Verify RCP $ 1 seal outlet temperature

- LESS THAN 235'F

b. Verify RCP seal outlet valves-OPEN

~ AOV-270A

~ AOV-270B a.

Go to Step 7.

b. Manually open valves as necessary.
c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313 4

d.

Open RCP seal return isolation valve MOV-313

e. Verify RCP gl seal leakoff flov

- LESS THAN 5.5 GPM

f. Verify RCP fl seal leakoff flov

- GREATER THAN 0.25 GPM

d. Perform the folloving:
1) Place MOV-313 svitch to OPEN.
2) Dispatch AO with key to RWST gate to locally open MOV-313.
e. IF any RCP seal leakoff flow greater than 5.5 gpm THEN:

o Close the affected RCP seal discharge valve

~ RCP A, AOV-270A

~ RCP B, AOV-270B o

Trip the affected RCP IF both RCP seal discharge valves are shut, THEN go to Step 7.

f. Refer to AP-RCP,1, RCP SEAL MALFUNCTION.

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2 PAGE 7 of 11 STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 6

Check Normal Letdown. IN SERVICE Establish excess letdown as follows:

o Place AOV-312 to NORMAL o

Ensure CCV from excess

letdown, (AOV-745).

o Open excess letdown isolation valve AOV-310.

o Slowly open HCV-123 to maintain excess letdown temperature less than 195'F and pressure less than 100 psig.

J h

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2 PAGE 8 of ll STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 7

Check If Charging Flow Has Been Established:

a. Charging pumps

- ANY RUNNING

a. Perform the following:
1) IF CCW flow is lost to any RCP thermal barrier OR any RCP gl seal outlet temperature offscale high, THEN dispatch AO with key to RWST gate to locally close seal in)ection needle valve(s) to affected RCP:

~ RCP A, V-300A

~ RCP B, V-300B

b. Charging pump suction aligned to RWST:

o LCV-112B -

OPEN o

LCV-112C - CLOSED

2) Ensure HCV-142 open, demand at OX.
b. Manually align valves as necessary.

IF LCV-112B can NOT be opened, THEN perform the following:

1) Verify charging pump A NOT running and place in PULL STOP.
c. Start charging pumps as necessary and adjust charging flow to restore PRZR level
2) Dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).

3)

WHEN V-358 open, THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).

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2 PAGE 9 of 11 STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 8

Check Normal Letdown IN SERVICE Establish Normal Letdown:

a. Establish charging flow to REGEN

'x greater than 20 gpm.

b. Place the following switches to CLOSE:

~ Letdown orifice valves (AOV-200A, AOV-200B, and AOV-202)

~ AOV-427, loop B cold leg to REGEN Hx

~ AOV-371, letdown isolation valves

c. Place letdown controllers TCV-130 and PCV-135 in MANUAL at 25X open
d. Reset both trains of XY relays for AOV-371 and AOV-427 e.

Open AOV-371 and AOV-427

f. Open letdown orifice valves as necessary
g. Place TCV-130 in AUTO at 105'F
h. Place PCV-135 in AUTO at 250 psig
i. Adjust charging pump speed and HCV-142 as necessary
j. VHEN normal letdown in service, THEN secure excess letdown.

o Close excess letdown flow control valve, HCV-123.

o Close excess letdown isolation valve, AOV-310.

e

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PAGE 10 of ll STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 9

Check PRZR Pressure:

a. Pressure LESS THAN 2335 PSIG
b. Pressure

- LESS THAN 2260 PSIG

a. Verify at least one PRZR PORV and block valve open.

IF NOT, THEN open one PORV and block valve as necessary until pressure less than 2335 psig.

IF IA NOT available, THEN refer to Attachment N2 PORVS to operate PORVs.

b. Control charging and letdown flow as necessary to decrease PRZR pressure to less than 2260 psig.

10 Verify PRZR PORVs CLOSED Manually close PORVs.

IF any valve can NOT be closed, THEN manually close its block valve.

ll Restore PRZR To Saturation Conditions:

a. Verify letdown - IN SERVICE
b. Energize PRZR heaters a.

Do NOT energize PRZR heaters.

Continue with Step 13.

VHBN letdown established, THEN energize PRZR heaters.

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PAGE ll of 11 STEP ACTION/EXPECTED RESPONSE

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NOT OBTAINED 12 Check PRZR Spray Valves:

a. Auxiliary spray valve (AOV-296)

- CLOSED a ~ Manually close auxiliary spray valve.

IR valve can NOT be

closed, THEN perform the following:-
1) Establish excess letdown (Refer to Step 6).
2) Close loop B cold leg to REGEN Hx (AOV-427).
3) Ensure HCV-142 demand at OX.
b. Verify normal PRZR spray valve controllers DEMAND AT OX
b. Place controllers in manual at OX demand.

NOTE:

PRZR temperature at which bubble should form may be determined from steam table.

13 Control Charging And Letdown Flow As Necessary To Maintain RCS Pressure Stable 14 Check PRZR level LESS THAN 874 Perform the following:

a. Consult TSC to determine if RCPs should be stopped to isolated failed spray valve.
b. Return to Step 13.

15 Return To Procedure And Step In Effect

-END-

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2 PAGE 1 of 1 FR-I. 1 APPENDIX LIST TITLE PAGES 1)

ATTACHMENT N2 PORVS 2)

ATTACHMENT SD-1

/w/

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