ML17263A615

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Rev 9 to EOP FR-C.2, Response to Degraded Core Cooling
ML17263A615
Person / Time
Site: Ginna Constellation icon.png
Issue date: 03/30/1994
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A585 List:
References
FR-C.2, NUDOCS 9404190168
Download: ML17263A615 (40)
v • d • e


Text

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 1 of 14 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 3

PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

4.00ip b8

~+o+00+244 PDR A

PDR

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EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV 9

PAGE 2 of 14 A.

PURPOSE This procedure provides actions to restore adequate core cooling.

B.

ENTRY CONDITIONS/SYMPTOMS l.

ENTRY CONDITIONS This procedure is entered from:

a.

F-0.2, CORE COOLING Critical Safety Function Status

Tree, on any ORANGE condition.

EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 3 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

Adverse CNMT values should, be used whenever CNMT ~ressure is greater than 4 psig or CNMT radiation is greater than 10+

R/hr.

1 Check RWST Level GREATER THAN 284 Perform the following:

a.

Ensure SI system aligned for cold leg recirculation using Steps 1 through 11 of ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

b.

Go to Step 3.

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 4 of 14 STEP

,ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 2 Verify SI Pump And RHR Pump Emergency Alignment:

a.

RHR pump discharge to Rx vessel deluge OPEN

~ MOV-852A

~ MOV-852B a.

Ensure at least one valve open.

b. Verify SI pump C

RUNNING

b. Manually start pump on available bus.
c. Verify SI pump A -

RUNNING

d. Verify SI pump B -

RUNNING

c. Perform the following:
1) Ensure SI pumps B and C

running.

2) Ensure SI pump C aligned to discharge line A:

o MOV-871B closed o

MOV-871A open 3)

Go to Step 3.

d. Perform the following:
1) Ensure SI pumps A and C

running.

2) Ensure SI pump C aligned to discharge line B:

o MOV-871B open o

MOV-871A closed

e. Verify both SI pump C discharge valves OPEN

~ MOV-871A

~ MOV-871B 3)

Go to Step 3.

e. Manually open valves as necessary.

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV 9

PAGE 5 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 3 Verify SI Pump Suction aligned to RWST:

a.

SI pump suction valves from RWST OPEN

~ MOV-825A

~ MOV-825B a.

Ensure at least one SI pump suction valve from RWST open

~ MOV-825A

~ MOV-825B

b. SI pump suction valve from BASTs CLOSED

~ MOV-826A

~ MOV-826B

~ MOV-836C

~ MOV-826D b.

Ensure at least one valve in each SI pump suction line from BAST closed.

~ MOV-826A or MOV-826B

~ MOV-826C or MOV-826D 4 Verify SI Flow In Both Trains:

a.

SI line'oop A and B flow indicators CHECK FOR FLOW a.

Perform the following:

l) Manually start SI pumps and align valves as necessary.

2) Establish maximum charging flow.

b.

RCS pressure LESS THAN 250 psig

[465 psig adverse CNMT]

c.

RHR loop flow indicator CHECK FOR FLOW b.

Go to Step 5.

c. Manual'ly start RHR pumps and align valves.

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV' PAGE 6 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED x **************

x***

CAUTION IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR

PRESSURE, IT SHOULD BE CLOSED AFTER PRESSURE DECREASES TO LESS THAN 2335 PSIG (REFER TO STEP 5B).
  • * * * * * * * * * * * * * * * * * * * * * * * * * * *
  • 4 * * * * * * * * *:**

5 Check RCS Vent Path@:

a.

Power to PRZR PORV block valves AVAILABLE

a. Restore power to block valves unless block valve was closed to isolate an open PORV:

b.

PORVs CLOSED

~ MOV-515, MCC C position 6C' MOV-516, MCC D position 6C

b. IF PRZR pressure less than 2335 psig, THEN manually close PORVs.

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

c. Block valves

- AT LEAST ONE OPEN c.

Open one block valve unless it was closed to isolate an open PORV.

d.

Rx vessel head vent valves CLOSED

d. Manually close valves.

~ SOV-590

~ SOV-591

~ SOV-592

~ SOV-593

4

t. '.

~

EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV' PAGE 7 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

Normal conditions for running RCPs are desired, but RCPs should not be tripped if normal conditions cannot be established "or maintained.

6 Check RCP Status:

a. At least one RCP RUNNING a.

Go to Step 9.

b. Support conditions for the operating RCP(s) available (Refer to Attachment RCP START)
b. Try to establish support conditions for the operating RCP.

7 Check RVLIS Fluid Fraction

a. Fluid fraction (any RCP on)

GREATER THAN 60%

a. IF increasing, THEN return to Step 1.

IF NOT, then go to Step 8.

b. Return to procedure and step in effect.

8 Check If One RCP Should Be Stopped:

a.

Both RCPs RUNNING

b. Stop one RCP c.

Go to Step 10 a.

Go to Step 10.

EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV' PAGE 8 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 9

Check Core Cooling:

a.

RVLIS level (no RCPs)

GREATER THAN 43%

[46% adverse CNMT]

a. IF increasing, THEN return to Step 1.

IF NOT, THEN go to Step 10.

b.

Core exit T/Cs LESS THAN 700'F

b. IF decreasing, THEN return to Step 1.

IF NOT, THEN go to Step 10.

c. Return to procedure and step in

.effect 10 Check SI ACCUM Discharge Valves OPEN

~ MOV-841

~ MOV-865 IF SI ACCUM discharge valves closed after ACCUM discharge, THEN go to Step ll.

IF NOT, THEN perform the following:

a. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves.

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C b.

Open SI ACCUM discharge valves.

~ ACCUM A, MOV-841

~ ACCUM B, MOV-865

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 9 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED

  • * * * * * * * * * *
  • x * *
  • x * * * * * *
  • x x
  • x
  • x
  • x
  • x * * * * * *
  • CAUTION o

IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).

o A FAULTED OR RUPTURED S/G SHOULD NOT BE USED IN SUBSEQUENT STEPS UNLESS NO INTACT S/G IS AVAILABLE.

x x **x x ******************

NOTE:

TDAFW pump flow control valves fail open on loss of IA.

  • ll Monitor Intact S/G Levels:

a.

Narrow range level GREATER THAN 5%

[25% adverse CNMT]

b. Control feed flow to maintain narrow range level between 17%

[25% adverse CNMT] and 50%

a. Increase total feed flow to restore narrow range level greater than 5%

[25% adverse CNMT] in at least one S/G.

12 Verify Condenser Steam Dump In Manual:

a. Verify condenser available:

o Intact S/G MSIV -

OPEN a.

Place intact S/G ARV controller in MANUAL and go to Step 13.

o Annunciator G-15, STEAM DUMP ARMED - LIT

b. Place steam dump mode selector switch in MANUAL
c. Place steam dump controller in MANUAL

I 1

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 10 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED

                      • x**x*x************%

CAUTION THE FOLLOWING STEP WILL CAUSE SI ACCUMULATOR INJECTION WHICH MAY RESULT IN A RED PATH CONDITION IN F-0.4, INTEGRITY STATUS TREE.

THIS PROCEDURE SHOULD BE COMPLETED BEFORE TRANSITION TO FR-P.1,

RESPONSE

TO IMMINENT PRESSURIZED THERMAL SHOCK.

13 Depressurize All Intact S/Gs To 200 PSIG:

a. Maintain cooldown rate in RCS cold legs LESS THAN 100'F/HR b.

Dump steam to condenser

b. Manually or locally dump steam from intact S/Gs:

o Use S/G ARVs.

-OR-o Open TDAFW pump steam supply valve(s) for affected S/G(s):

~ S/G A, MOV-3505A

~ S/G B, MOV-3504A

-OR-o Locally perform the following:

o Open intact S/G MSIV bypass valve.

o Open priming air ejector steam isolation valves.

~ V-3580

~ V-3581 c.

Check S/G pressures LESS THAN 200 PSIG

c. Return to Step 11.

d.

Stop S/G depressurization

.I l

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV' PAGE 11 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED

~ *4 *********************

CAUTION RHR PUMPS SHOULD NOT BE RUN LONGER THAN 1 HOUR WITHOUT CCW TO THE RHR HEAT EXCHANGERS.

x ****x

  • x x x *******************

14 Check RHR Pumps RUNNING Manually start pumps as necessary.

15 Check If SI ACCUMs Should Be Isolated:

a.

RCS hot leg temperatures BOTH LESS THAN 400'F a.

Go to Step 17.

b. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves if necessary

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

c. Close SI ACCUM discharge valves

~ MOV-841

~ MOV-865

c. Vent any unisolated ACCUMs:
1) Open vent valves for unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

d. Locally reopen breakers for MOV-841 and MOV-865
2) Open HCV-945.

EOP:

FR-C.2 TITLE:

RESPONSE

TO DEGRADED CORE COOLING REV 9

PAGE 12 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED

    • x ****x **% x *************************

CAUTION SYMPTOMS FOR FR-C.1,

RESPONSE

TO INADEQUATE CORE COOLING, SHOULD BE CLOSELY MONITORED DURING SUBSEQUENT STEPS.

16 Stop All RCPs 17 Depressurize All Intact S/Gs To Atmospheric Pressure:

a. Maintain cooldown rate in RCS cold legs LESS THAN 100'F/HR b.

Dump steam to condenser

b. Manually or locally dump steam from intact S/Gs:
1) Use S/G ARVs.

1

2) Open TDAFW pump steam supply valve(s) for affected S/G(s):

~ S/G A, MOV-3505A

~ S/G B, MOV-3504A

3) Locally perform the following:

o Open intact S/G MSIV bypass valve.

o Open priming air ejector steam isolation valves.

~ V-3580

~ V-3581

EOP:

FR-C.2 jITLE:

RESPONSE

TO DEGRADED CORE COOLING REV' PAGE 13 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 18 Verify SI Flow:

o SI line loop A and B flow indicators CHECK FOR FLOW Perform the following:

a.

Continue efforts to establish SI flow.

-OR-o RHR loop flow indi.cator CHECK FOR FLOW

b. Try to establish maximum charging flow.
c. Return to Step 17.

19 Isolate Both SI ACCUMs:

a.

Close SI ACCUM discharge valves

~ MOV-'841

~ MOV-865

a. Vent any unisolated ACCUMs:
1) Open vent valves for unisolated SI ACCUMs
b. Locally reopen breakers for MOV-841 and MOV-865

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

20 Stop All RCPs 21 Check Core Cooling:

o RVLIS level (no RCPs)

GREATER THAN 68%

[73% adverse CNMTj o

Both RCS hot leg temperatures LESS THAN 320'F Return to Step 17.

EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 14 of 14 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 22 Go to Appropriate Plant Procedure a.

Check RWST level GREATER THAN 28' b.

Go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step 17

-END-a.

Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.

I II

EOP:

FR-C.2

RESPONSE

TO DEGRADED CORE COOLING REV:

9 PAGE 1 of 1 FR-C.2 APPENDIX LIST TITLE 1)

ATTACHMENT RCP START PAGES

ECP:

FR-C.3

RESPONSE

TO SATURATED CORE COOLING REV 5

PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

(fm I

EOF.

FR-C.3

RESPONSE

TO SATURATED CORE COOLING REV:

5 PAGE 2 of 5 A.

PURPOSE - This procedure provides actions to restore core cooling.

B.

ENTRY CONDITIONS/SYMPTOMS 1.

ENTRY CONDITIONS This procedure is entered from:

a.

F-0.2, CORE COOLING Critical Safety Function Status

Tree, on a YELLOW condition.

I

EOP:

FR-C.3

RESPONSE

TO SATURATED CORE COOLING REV:

5 PAGE 3 of 5 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED NOTE:

o If either ECA-3.2, SGTR WITH LOSS OF REACTOR COOLANT -

SATURATED RECOVERY DESIRED or ES-1.3, TRANSFER TO COLD LEG RECIRCULATION is i'n effect, this procedure should not be performed.

o 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 RHR Normal Cooling-NOT IN SERVICE Refer to AP-RHR.1, LOSS OF RHR.

2 Check RWST Level GREATER THAN 284 Ensure SI system aligned for cold leg recirculation using Steps 1

through 11 of ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

3 Verify SI Flow:

a.

SI line loop A and B flow indicators CHECK FOR FLOW b.

RCS pressure

- LESS THAN 250 psig (465 psig, adverse CNMTj c.

RHR loop flow indicator CHECK FOR FLOW

a. Manually start SI pumps and align valves.

b.

Go to Step 4.

c. Manually start RHR pumps and align valves.

c h

EOP:

FR-C.3 tlTLE:

RESPONSE

TO SATURATED CORE COOLING REV' PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED x ~ *******************

CAUTION IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR

PRESSURE, IT SHOULD BE CLOSED AFTER PRESSURE DECREASES TO LESS THAN 2335 PSIG (REFER TO STEP 4B).

4 Check PRZR PORVs And Block Valves:

a.

Power to PORV block valves AVAILABLE

a. Restore power to block valves unless block valve was closed to isolate an open PORV:

b.

PORVs CLOS ED

~ MOV-515, MCC C position 6C

~ MOV-516, MCC D position 6C

b. IF PRZR pressure less than 2335 psig, THEN manually close PORVs.

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

c. Block valves

- AT LEAST ONE OPEN c.

Open one block valve unless it was closed to isolate an open PORV.

d.

Rx vessel head vent valves CLOSED

d. Manually close valves.

~ SOV-590

~ SOV-591

~ SOV-592

~ SOV-593

v g1

FR-C.3

RESPONSE

TO SATURATED CORE COOLING REV:

5 PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE

RESPONSE

NOT OBTAINED 5 Return To Procedure And Step In Effect

-END-

E

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