ML022410335

Emergency Operating Procedures for R.E. Ginna Nuclear Power Plant, ECA-0.2, Revision 14 - FR-Z.1, Revision 6

ML022410335
Person / Time
Site:	Ginna
Issue date:	08/13/2002
From:	Widay J Rochester Gas & Electric Corp
To:	Clark R Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML022410335 (124)

Text

EOP:

TITLE:

ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 1 of 9 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIBL MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

EOP:

TITLE:

ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 2 of 9 A.

PURPOSE - This procedure provides actions to use engineered safeguards systems to recover plant conditions following restoration of AC emergency power.

B.

ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS - This procedure is entered from:

a.

ECA-0.0, LOSS OF ALL AC POWER, when AC emergency power is restored and SI is required.

b.

ECA-0.1, LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED, if SI is required.

EOP:

TITLE:

ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 3 of 9 SE ACTION/EXPECED REPONSE IRESPONSE NOT OBTAINED NOTE:

o CSFSTs should be monitored for information only.

FR procedures should not be implemented prior to completion of Step 10.

o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.

1 Reset SI 2 Check RCP CCW Isolation Status:

a.

CCW pumps -

BOTH PUMPS OFF

b.

RCP CCW return valves -

CLOSED o MOV-759A o MOV-759B

a.

Go to Step 3.

b. Manually close valves as necessary:

o RCP CCW thermal barrier outlet valves

• AOV-754A

• AOV-754B

-OR o

RCP CCW supply valves

• MOV-749A e MOV-749B 3 Check RWST Level -

GREATER THAN 28%

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

EOP:

TITLE:

ECA-O.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV: 14 REQUIRED PAGE 4 of 9 NOTE:

SI actuation to establish safeguards valve alignment is not recommended.

4 Manually Align SI And RHR Pumps To Establish SI Injection:

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. Verify SI pump C discharge valves -, OPEN

b. Manually open valves as necessary.

e MOV-871A w MOV-871B

c.

RHR pump discharge to Rx vessel deluge -

OPEN

"* MOV-852A

"* MOV-852B

c. Ensure at least one deluge valve open.

"* MOV-852A

"* MOV-852B

EOP:

TITLE:

ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 5 of 9

.A..0...

C.

• 0*.

• .0.

• 0. 0

• A* * **I CAUTION THE LOADS PLACED ON THE ENERGIZED AC CAPACITY OF THE POWER SOURCE.

EMERGENCY BUS SHOULD NOT EXCEED THE 5 Manually Load Following Safeguards Equipment On AC Emergency Bus:

a. Start all SI pumps

b. Check RCS pressure:

o Pressure 250 psig CNMT]

GREATER THAN

[465 psig adverse

a. Perform the following:

1) Start available SI pumps.

2)

IF SI pump A or B NOT available, THEN verify SI pump C aligned as follows:

"o IF SI pump A NOT available, THEN ensure MOV-871B closed.

"o IF SI pump B NOT available, THEN ensure MOV-871A closed.

b. Manually start both RHR pumps and go to Step 5d.

o Pressure - STABLE OR INCREASING

c.

Place RHR pump switches in AUTO

d. Start all available CNMT RECIRC fans

EOP:

TITLE:RE

1 ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 6 of 9 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 IF SIG NR LEVEL DECREASES TO LESS THAN 5% [25% ADVERSE CNMT]

AND FEED FLOW IS LESS THAN 200 GPM, THEN THE MDAFW PUMPS SHOULD BE MANUALLY LOADED ON AC EMERGENCY BUS TO SUPPLY WATER TO THE S/G(S).

NOTE:

o If MDAFW pump operation is not required, pump switches should be maintained in PULL-STOP to prevent automatic start.

o TDAFW pump flow control AOVs may drift open on loss of IA.

• 6 Monitor Intact S/G Levels:

a. Narrow range level GREATER THAN 5% [25% adverse CNMT]

a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5% [25%

adverse CNMT]

in at least one S/G.

IF feed flow less than 200 gpm, THEN perform the following:

1) Verify MDAFW pump discharge valve to intact S/G(s) open.

"* S/G A. MOV-4007

"* S/G B, MOV-4008

2) Manually start MDAFW pumps as necessary (223 kw).

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

[25% adverse CNMT] and 50%

EOP:

TITLE:

REV:

14 ECA-O.2 LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED PAGE 7 of 9 7 VrREfPOyN NIOTOAdTAIECD 7 Verify CI And CVI:

a. CI and CVI annunciators

- LIT e Annunciator A-26.

CNMT ISOLATION

• Annunciator A-25, CONTAINMENT VENTILATION ISOLATION

b. Verify CI and CVI valve status lights - BRIGHT

c.

CNMT RECIRC fan coolers SW outlet valve status lights BRIGHT

a. Depress manual CI pushbutton.

b. Manually close CI and CVI valves.

IF valves can NOT be verified closed by MCB "indication, THEN dispatch AO to locally close valves (Refer to Attachment CI/CVI).

c. Dispatch AO to locally fail open valves.

"* AOV-4561

"* AOV-4562

EOP:

TITLE:

ECA-0.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV:

14 REQUIRED PAGE 8 of 9 STP ACTION/EXPECTED RSPONSEI RESPONSE NOT OBTAINEDI 8 Verify CNMT Spray Not Required:

"o Annunciator A-27.

CNMT SPRAY EXTINGUI SHED "o CNMT pressure -

LESS THAN 28 PSIG IF CNMT pressure is less than 28 psig, THEN perform the following:

a. Reset CNMT spray.

b. Place CNMT spray pump discharge valve switches to CLOSE to deenergize open contactor.

IF NOT, THEN perform the following:

a. Depress manual CNMT spray pushbuttons (2 of 2).

b. Ensure CNMT spray pump discharge valves open.

o CNMT spray pump A:

"* MOV-860A

"* MOV-860B o

CNMT spray pump B:

"* MOV-860C

"* MOV-860D

c. Verify NaOH tank flow (FI-930).

IF NaOH flow NOT indicated, THEN place switches for NaOH tank outlet valves to OPEN.

• AOV-836A

• AOV-836B

d. Start both CNMT spray pumps.

e.

Go to step 10.

EOP:

TITLE:

REV :

14 ECA-O.2 LOSS OF ALL AC POWER RECOVERY WITH SI 2REQUIRED PAGE 9 of 9 9 Place CNMT Spray Pumps In AUTO 10 Check RCP Seal Injection Needle Valves -

CLOSED Locally close valves before starting charging pump.

e V-300A

• V-300B NOTE:

FR procedures may now be implemented as necessary.

11 Go to E-1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1

-END-

EOP:

TITLE:

ECA-O.2 LOSS OF ALL AC POWER RECOVERY WITH SI REV: 14 REQUIRED PAGE 1 of 1 ECA-0.2 APPENDIX LIST TITLE

1) ATTACHMENT CI/CVI (ATT-3.0)

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 1 of 34 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RES PONS I BLEOMANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:___________

~

TITLE:

I

'CA-1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24

-2.

GENERATORS PAGE 2 of 34 A.

PURPOSE -

This procedure provides actions to mitigate and minimize a loss of secondary coolant from both steam generators.

B.

ENTRY CONDITIONS/SYMPTOMS

1.

ENTRY CONDITIONS -

This procedure is entered from:

a.

E-2, FAULTED STEAM GENERATOR ISOLATION, when an uncontrolled depressurization of both steam generators occurs.

'I ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV:

24 GENERATORS PAGE 3 of 34 CAUTION IF THE TDAFW PUMP IS THE ONLY AVAILABLE SOURCE OF FEED FLOW, THEN STEAM SUPPLY TO THE TDAFW PUMP MUST BE MAINTAINED FROM ONE S/G.

NOTE:

o FOLDOUT page should be open AND monitored periodically.

"o Conditions should be evaluated for Site Contingency Reporting (Refer to EPIP 1-0. GINNA STATION EVENT EVALUATION AND CLASSIFICATION).

"o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.

1 Check Secondary Pressure Manually close valves one loop at a Boundary:

time.

"o MSIVs -

CLOSED IF valves can NOT be closed.

THEN dispatch AO to locally isolate "o MFW flow control valves -

CLOSED flowpaths, as necessary, one loop at a time.

o MFW regulating valves

• MFW bypass valves, "o MFW pump discharge valves CLOSED "o S/G blowdown and sample valves CLOSED "o TDAFW pump steam supply valves PULL STOP "o TDAFW pump flow control valves CLOSED "o SIG ARVs - CLOSED "o Dispatch AO to locally isolate S/Gs (Refer to Attachment FAULTED S/G)

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 4 of 34 ACTONEXP.TD.RSPNSE..ESPNS.NO.OTAIED CAUTION A-MINIMUM FEED FLOW OF 50 GPM MUST BE MAINTAINED TO EACH SIG WITH A NARROW RANGE LEVEL LESS THAN 5% [25% ADVERSE CNMT].

NOTE:

Shutdown margin should be monitored Figure SDM).

2 Control Feed Flow To Minimize RCS Cooldown:

a. Check cooldown rate in RCS cold legs -

LESS THAN 100°F/HR

b. Check narrow range level in both S/Gs - LESS THAN 50%

c.

Check RCS hot leg temperatures STABLE OR DECREASING

• 3 Monitor RCP Trip Criteria:

a.

RCP status -

ANY RCP RUNNING

b.

SI pumps AT LEAST TWO RUNNING

c.

RCS pressure minus maximum S/G pressure - LESS THAN 175 psig

[400 psig adverse CNMT]

u r i n f

t during RCS cooldown (Refer to

a. Decrease feed flow to 50 gpm to each SIG and go to Step 2c.

b. Control feed flow to maintain narrow range level less than 50%

in both S/Gs.

c. Control feed flow or dump steam to stabilize RCS hot leg temperatures.

a.

Go to Step 4.

b.

Go to Step 4.

c.

Go to Step 4.

d.

Stop both RCPs

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS SE ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 4 Check CST Level -

GREATER THAN 5 FEET Switch to alternate AFW suction supply (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).

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).

• 5 Monitor PRZR PORVs And Block Valves:

a.

Power to PORV block valves AVAILABLE

b.

PORVs - CLOSED

c. Block valves -

AT LEAST ONE OPEN

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

"* MOV-515, MCC D position 6C

"* MOV-516, MCC C 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.

IF block valve can NOT be closed, THEN dispatch AO to locally check breaker.

"* MOV-515.

MCC D position 6C

"* MOV-516.

MCC C position 6C

c.

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

.1 REV: 24 PAGE 5 of 34

====i

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV:

24 GENERATORS PAGE 6 of 34 STEP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINED[

6 Check Secondary Radiation Levels -

NORMAL Go to E-3, STEAM GENERATOR TUBE RUPTURE.

Step 1.

"o Steamline radiation monitor (R-31 and R-32)

"o Dispatch AO to locally check steamline radiation "o Request RP sample S/Gs for activity CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, THEN MANUAL ACTION MAY BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

(REFER TO ATT-8.5, ATTACHMENT LOSS OF OFFSITE POWER) 7 Reset SI

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS PAGE 7 of 34 A..T ON....EXPECTE.D. RESPONSER*SPONSENOT.OB CAUTION RCS PRESSURE SHOULD BE MONITORED.

IF RCS PRESSURE DECREASES IN AN UNCONTROLLED MANNER TO LESS THAN 250 PSIG [465 PSIG ADVERSE CNMT].

THEN THE RHR PUMPS MUST BE MANUALLY RESTARTED TO SUPPLY WATER TO THE RCS.

• 8 Monitor If RHR Pumps Should Be Stopped:

a.

RHR pumps -

ANY RUNNING

b. Check RCS Pressure:

1) Pressure -

GREATER THAN 250 psig [465 psig adverse CNMT]

2)

Pressure -

STABLE OR INCREASING

c. Stop RHR pumps and place in AUTO

a.

Go to Step 9.

1) Go to E-1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1.

2)

Go to Step 9.

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS PAGE 8 of 34 SACTONIXP*TEDRESONSI iRESPOýNSE NýOTO0*TAINEý

• 9 Monitor If CNMT Spray Should Be Stopped:

a.

CNMT spray pumps RUNNING

b.

Check the following:

o CNMT pressure

- LESS THAN 4 PSIG o

Sodium hydroxide tank level LESS THAN 55%

c. Reset CNMT spray

d.

Check NaOH flow (FI-930) - NO FLOW

a. Go to Step 10.

b. Continue with Step 10.

WHEN BOTH conditions satisfied. THEN do Steps 9c through f.

d. Place NaOH tank outlet valve switches to CLOSE.

• AOV-836A

• AOV-836B

e.

Stop CNMT spray pumps and place in AUTO

f.

Close CNMT spray pump discharge valves

• MOV-860A e MOV-860B

• MOV-860C

• MOV-860D

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS 10 Check RWST Level -

GREATER THAN 28%

11 Reset CI:

a. Depress CI reset pushbutton

b. Verify annunciator A-26.

CNMT ISOLATION - EXTINGUISHED 12 Verify Adequate SW Flow:

a. Check at least two SW pumps RUNNING REV: 24 PAGE 9 of 34 Go to ES-1.3. TRANSFER TO COLD LEG RECIRCULATION, Step 1.

b. Perform the following:

1) Reset SI.

2) Depress CI reset pushbutton.

a. Manually start SW pumps as power supply permits (257 kw each).

IF less than two SW pumps running, THEN perform the following:

1) Ensure SW isolation.

2) Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-i)

3)

IF N0 SW pumps running. THEN refer to ATT-2.4.

ATTACHMENT NO SW PUMPS.

4)

IF only one SW pump running, THEN refer to AP-SW.2, LOSS OF SERVICE WATER.

5)

Go to Step 14.

b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-I)

I i

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS 13 Establish IA to CNMT:

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

Bus 13 normal feed -

CLOSED

-OR o

Bus 15 normal feed - CLOSED

b. Verify SW isolation valves to turbine building -

OPEN

• MOV-4613 and MOV-4670 o MOV-4614 and MOV-4664

c. Verify adequate air compressor(s) -

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

f.

Verify IA to CNMT AOV-5392 OPEN REV: 24 PAGE 10 of 34

a. Perform the following:

1) Close non-safeguards bus tie breakers:

o Bus 13 to Bus 14 tie

• Bus 15 to Bus 16 tie

2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).

IF

NOT, THEN evaluate if CNMT RECIRC fans should be stopped (Refer to Attachment CNMT RECIRC FANS).

3)

WHEN bus 15 restored, THEN reset control room lighting.

b. Manually align valves.

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.l.

LOSS OF INSTRUMENT AIR).

2) Continue with Step 14.

WHEN IA restored, THEN do Steps 13e and f.

7ý_

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 11 of 34 SACTI ON/EXPECTED RESPONSE[

RESPONSE NOT OBTAINED[

14 Check If SI ACCUMs Should Be Isolated:

a. Both RCS hot leg temperatures LESS THAN 400°F

b. 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

c. Close SI ACCUM discharge valves e MOV-841 e MOV-865

d. Locally reopen breakers for MOV-841 and MOV-865 15 Check Normal Power Available To Charging Pumps:

"o Bus 14 normal feed breaker CLOSED "o Bus 16 normal feed breaker CLOSED

a.

Go to Step 15.

c. Vent any unisolated ACCUMs:

1) Open vent valves for unisolated SI ACCUMs, e ACCUM A, AOV-834A 2 ACCUM B, AOV-834B

2) Open HCV-945.

Verify adequate emergency D/G capacity to run charging pumps (75 kw each).

IF NOT, THEN evaluate if CNMT RECIRC fans can be stopped (Refer to Attachment CNMT RECIRC FANS).

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 12 of 34 16 Check If Charging Flow Has Been Established:

a. Charging pumps -

ANY RUNNING

b. Align charging RWST:

pump suction to o

LCV-112B -

OPEN o

LCV-112C -

CLOSED

a. Perform the following:

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP #1 seal outlet temperature offscale high, THEN dispatch AO with key to RWST gate to close seal injection needle valve(s) to affected RCP:

• RCP A. V-300A e RCP B. V-300B

2) Ensure HCV-142 open, demand at 0%.

b.

IF LCV-112B can NOT be opened, THEN dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).

IF LCV-112C can NOT be closed, THEN perform the following:

1) Verify charging pump A NOT running and place in PULL STOP.

2) Direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).

c. Start charging pumps as necessary and adjust charging flow to restore PRZR level

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV:

24 PAGE 13 of 34

"*17 Monitor SI Termination Criteria:

a. SI pumps -

ANY RUNNING

b. Check RCS pressure:

o Pressure -

GREATER THAN 1625 psig [1825 psig adverse CNMT]

o Pressure - STABLE OR INCREASING

c.

RCS subcooling based on core exit T/Cs GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

d.

PRZR level -

GREATER THAN 5%

[30% adverse CNMT]

a. Go to Step 19.

b.

DO NOT stop SI pumps.

the following:

Perform

1) Energize PRZR heaters and operate PRZR spray as necessary to stabilize RCS pressure greater than 1625 psig [1825 psig adverse CNMT]

2) Return to Step 2.

c.

DO NOT stop SI pumps.

Step 2.

d.

Do NOT stop SI pumps.

the following:

Return to Perform

1) IF normal PRZR spray available, THEN try to stabilize RCS pressure with PRZR spray.

2) Return to Step 17a.

NOTE:

o Following SI termination, RCP trip criteria is no longer applicable.

o Foldout Page E-2 transition criteria does not apply while performing steps 18 and 19.

18 Stop SI and RHR Pumps And Place In Auto

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS PAGE 14 of 34

• 19 Monitor SI Reinitiation Criteria:

a.

RCS subcooling based on core exit T/Cs -

GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

b.

PRZR level -

GREATER THAN 5%

[30% adverse CNMT]

20 Check RCS Hot Leg Temperatures -

STABLE OR DECREASING 21 Check Narrow Range Level In Both S/Gs -

LESS THAN 50%

a. Manually start SI pumps as necessary and return to Step 2.

b. Control charging flow to maintain PRZR level.

IF PRZR level can NOT be maintained.

THEN manually start SI pumps as necessary and return to Step 2.

Control feed flow or dump steam to stabilize RCS hot leg temperatures.

Control feed flow to maintain narrow range level less than 50% in both S/Gs.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 15 of 34 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 22 Verify Adequate CCW Hx:

a. Verify at least RUNNING SW Flow To two SW pumps

a. Manually start pumps as power supply permits (257 kw per pump).

IF less than two SW pumps can be operated.

THEN perform the following:

1)

NF LO SW pumps running, THEN refer to ATT-2.4. ATTACHMENT NO SW PUMPS.

2)

IF only one SW pump running, THEN refer to AP-SW.2, LOSS OF SERVICE WATER.

3)

Go to Step 28.

b. Verify AUX BLDG SW isolation valves -

OPEN

b. Manually align valves.

"* MOV-4615 and MOV-4734

"* MOV-4616 and MOV-4735 This Step continued on the next page.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 16 of 34 SCoTIONuED fRO p

RESPgONSE NOTeOBTAINE)D (Step 22 continued from previous page)

c. Verify CNMT annunciator TEMPERATURE RECIRC fan C-2. HIGH ALARM - EXTINGUISHED

c. Perform the following:

1) Determine required SW flow to CCW HXs per table:

2) Direct AO to adjust SW flow to required value.

"o IF on normal SW discharge:

• V-4619, CCW Hx A e V-4620.

CCW Hx B

-OR "o IF on alternate SW discharge:

• V-4619C, CCW Hx A

• V-4620B, CCW Hx B SW DISCHARGE CCW HXs IN REQUIRED SW FLOW ALIGNMENT SERVICE Normal 2

Total of 5000 6000 gpm equally divided to both HXs Normal 1

5000 -

6000 gpm to in-service UX Alternate 2

30-33" d/p across each HX Alternate 1

95-100" d/p across in-service HX

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 17 of 34 23 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

b. Verify instrument bus D ENERGIZED

a. Continue with Step 28.

WHEN IA restored, THEN do Steps 23 through 27.

b. Energize MCC B.

available, THEN following:

IF MCC B NOT perform the

c.

CCW pumps ANY RUNNING

d.

Charging pump ANY RUNNING

1) Verify MCC A energized.

2) Place instrument bus D on maintenance supply.

c. Perform the following:

1) IF any RCP #1 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

2) Manually start one CCW pump.

d. Continue with Step 28.

WHEN any charging pump running, THEN do Steps 24 through 27.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 18 of 34 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 24 Verify PRZR Level -

GREATER THAN 13% [40% adverse CNMT]

25 Establish Normal Letdown:

a. Verify charging line flow to REGEN Hx -

GREATER THAN 20 GPM

b. Place the following switches to CLOSE:

"* Letdown orifice valves (AOV-200A.

AOV-200B, and AOV-202)

"* AOV-371, letdown isolation valve

"* AOV-427, loop B cold leg to REGEN Hx

c.

Place letdown controllers in MANUAL at 40% open

"* TCV-130

"* PCV-135

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 Continue with Step 26.

WHEN PRZR level increases to greater than 13%

[40% adverse CNMT],

THEN do Step 25.

IF RCP seal return has been established, THEN establish excess letdown as follows:

"o Place excess letdown divert valve, AOV-312, to NORMAL.

"o Ensure CCW from excess letdown

open, (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.

"o Adjust charging pump speed as necessary.

IF RCP seal return NOT established, THEN consult TSC to determine if excess letdown should be placed in service.

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS PAGE 19 of 34 26 Check VCT Makeup System:

"a. Adjust boric acid flow control valve in AUTO to 9.5 gpm

b. Adjust RMW flow control valve in AUTO to 40 gpm

c. Verify the following:

1) RMW mode selector switch in AUTO

2)

RMW control armed RED LIGHT LIT

d.

Check VCT level:

"o Level GREATER THAN 20%

-OR "o Level STABLE OR INCREASING

c. Adjust controls as necessary.

d. Manually increase VCT makeup flow as follows:

1) Ensure BA transfer pumps and RMW pumps running.

IF NOT, THEN reset MCC C and MCC D UV lockouts as necessary.

2) Place RMW flow control valve HCV-111 in MANUAL and increase RMW flow.

3) Increase boric acid flow as necessary.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 20 of 34 27 Check Charging Pump Suction Aligned To VCT:

a. VCT level -

GREATER THAN 20%

b. Verify charging pumps aligned to VCT:

a. IF VCT level can NOT be maintained greater than 5%,

THEN perform the following:

1) Ensure charging pump suction aligned to RWST "o LCV-112B open "o LCV-112C closed

2)

Continue with Step 28.

WHEN VCT level greater than 40%.

THEN do Step 27b.

b. Manually align valves as necessary.

"o LCV-112C -

OPEN "o LCV-112B - CLOSED

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 21 of 34 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINED[

28 Check RCP Cooling:

a.

Check CCW to RCPs:

Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).

"o Annunciator A-7.

RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED "o Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW

- EXTINGUISHED

b. Check RCP seal injection:

"o Labyrinth seal D/Ps -

GREATER THAN 15 INCHES OF WATER

-OR "o RCP seal injection flow to each RCP -

GREATER THAN 6 GPM Zý1-

EOP:

TITLE:

ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV:

24 GENERATORS PAGE 22 of 34 29 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

c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313

d.

Open RCP seal return isolation valve MOV-313

e. Verify RCP #1 seal leakoff flow LESS THAN 6.0 GPM

f.

Verify RCP #1 seal leakoff flow GREATER THAN 0.8 GPM

a.

Go to Step 30.

b. Manually open valves as necessary.

d. Perform the following:

1) Place MOV-313 switch to OPEN.

2) Dispatch AO with key to RWST gate to locally open MOV-313.

e. Perform the following:

1) Trip the affected RCP

2) Allow 4 minutes for pump coast down, THEN close the affected RCP seal discharge valve

• RCP A, AOV-270A a RCP B, AOV-270B IF both RCP seal discharge valves are shut, THEN go to Step 30.

f.

Refer to AP-RCP.l, RCP SEAL MALFUNCTION.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 23 of 34 NOTE:

o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

o When using PRZR PORV.

select one with an operable block valve.

30 Energize Heaters And Operate Normal Spray As Necessary To Maintain RCS Pressure Stable IF normal spray NOT available and letdown is in service, THEN use auxiliary spray valve (AOV-296).

IF PRZR spray NOT available, THEN use one PRZR PORV.

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

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS PAGE 24 of 34 SE ACTION/EXPECTED RESPONSEI RESPONSE NO OTAINEDI 31 Verify All AC Busses ENERGIZED BY OFFSITE POWER o

Normal feed breakers to all 480 volt busses CLOSED o

480 bus voltage -

GREATER THAN 420 VOLTS o

Emergency D/G output breakers OPEN Perform the following:

a. IF any AC emergency bus normal feed breaker open, THEN ensure associated D/G breaker closed.

b. Perform the following, as necessary:

1) Close non-safeguards bus tie breakers:

o Bus 13 to Bus 14 tie o Bus 15 to Bus 16 tie

2) Place the following pumps in PULL STOP:

o EH pumps o Turning gear oil pump a HP seal oil backup pump

3) Restore power to MCCs.

o A from Bus 13 e B from Bus 15 o E from Bus 15 o F from Bus 15

4) Start HP seal oil backup pump

5) Ensure D/G load within limits.

6) WHEN bus 15 restored, THEN reset control room lighting.

7) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.

c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

EOP:

TITLE:

ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24

""GENERATORS PAGE 25 of 34 CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

32 Check RCP Status -

AT LEAST Try to start one RCP ONE RUNNING

a. IF RVLIS level (no RCPs) less than 95%,

THEN perform the following:

"o Increase PRZR level to greater than 65% [82% adverse CNMT]

Dump steam to establish RCS subcooling based on core exit T/Cs to greater than 20°F using Figure MIN SUBCOOLING "o Energize PRZR heaters as necessary to saturate PRZR water

b. Establish conditions for starting an RCP:

"o Verify bus 11A or liB energized.

"o Refer to Attachment RCP START.

c. Start one RCP.

IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).

IF natural circulation can NOT be verified. THEN increase feed flow or dumping steam.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 26 of 34 NOTE:

Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

33 Check If Source Range Detectors Should Be Energized:

a. Source range channels DEENERGIZED

b. Check intermediate range flux EITHER CHANNEL LESS THAN 10-10 AMPS

c. Check the following:

"o Both intermediate range channels - LESS THAN 10-10 AMPS

-OR "o Greater than 20 minutes since reactor trip

d. Verify source range detectors ENERGIZED

a.

Go to Step 33e.

b. Perform the following:

1) IF neither intermediate range channel is decreasing THEN initiate boration.

2)

Continue with Step 34.

WHEN flux is LESS THAN 10-10 amps on any operable channel, THEN do Steps 33c, d and e.

c. Continue with step 34.

WHEN either condition met, THEN do Steps 33d and e.

d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).

IF source ranges can NOT be restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 34.

e. Transfer Rk-45 recorder to one source range and one intermediate range channel.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 27 of 34 34 Check If Emergency D/Gs Should Be Stopped:

a. Verify AC emergency busses energized by offsite power:

"o Emergency D/G output breakers OPEN "o AC emergency bus voltage GREATER THAN 420 VOLTS "o AC emergency bus normal feed breakers - CLOSED

b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP)

a. Try to restore offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

III Lt:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV:

24 PAGE 28 of 34 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 35 Establish Normal Shutdown Alignment:

a. Check condenser - AVAILABLE

b. Perform the following:

"o Open generator disconnects e 1G13A71 e 9X13A73 "o Place voltage regulator to OFF "o Open turbine drain valves "o Rotate reheater steam supply controller cam to close valves "o Place reheater dump valve switches to HAND "o Stop all but one condensate pump

c. Verify adequate Rx head cooling:

1) Verify at least one control rod shroud fan - RUNNING

2) Verify one Rx compartment cooling fan - RUNNING

a. Dispatch AO to perform Attachment SD-2.

1) Manually start one fan as power supply permits (45 kw)

2) Perform the following:

"o Dispatch AO to reset UV relays at MCC C and MCC D.

"o Manually start one fan as power supply permits (23 kw)

d. Verify Attachment SD COMPLETE

---

I

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS S~ACTI ON/EXPECTED RESPONSE[

36 Maintain Plant Conditions STABLE "o RCS pressure "o PRZR level "o RCS temperatures

• 37 Monitor SI Reinitiation Criteria:

a. RCS subcooling based on core exit T/Cs -

GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

b.

PRZR level - GREATER THAN 5%

[30% adverse CNMT]

REV: 24 PAGE 29 of 34 SRESPONSE NOT OBTAINED Control plant systems as necessary to maintain conditions stable.

a. Manually start SI pumps as necessary.

Return to Step 2.

b. Control charging flow to maintain PRZR level.

IF PRZR level can NOT be maintained, THEN manually start SI pumps as necessary.

Return to Step 2.

TITLE:

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV:

24 GENERATORS PAGE 30 of 34

• ACION/.XPET*. *ES0*SE R SPýONSE Ný0T 0ýBTAINýEDI 38 Check If SI ACCUMs Should Be Isolated:

a. Check the following:

"o RCS subcooling based on core exit T/Cs -

GREATER THAN 0°F USING FIGURE MIN SUBCOOLING "o PRZR level GREATER THAN 5%

[30% adverse CNMT]

b. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves a MOV-841, MCC C position 12F

• MOV-865, MCC D position 12C

c.

Close SI ACCUM discharge valves e MOV-841

• MOV-865

a.

Go to Step 39.

c.

Vent any unisolated ACCUMs:

1) Open vent valves for unisolated SI ACCUMs.

e ACCUM A.

AOV-834A o ACCUM B, AOV-834B

2)

Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV:

24 PAGE 31 of 34 39 Verify Adequate Shutdown Margin

a. Direct RP to sample RCS for boron concentration

b. Verify boron concentration GREATER THAN REQUIREMENTS OF FIGURE SDM 40 Check RCS Hot Leg Temperatures -

LESS THAN 3500F

b. Borate as necessary.

Control feed flow and dump steam to establish RCS cooldown rate less than 100°F/hr in RCS cold legs.

"*41 Monitor RCP Operation:

a. RCPs ANY RUNNING

b.

Check the following:

a.

Go to Step 42.

b. Stop affected RCP(s).

"o RCP #1 seal D/P -

GREATER THAN 220 PSID "o RCP #1 seal leakoff -

WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 32 of 34 NOTE:

o If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

o When using PRZR PORV, select one with operable block valve.

• 42 Check RCS Pressure THAN 400 PSIG [300 adverse CNMT]

LESS PSIG Perform the following:

a. Depressurize RCS using normal PRZR spray.

IF normal spray NOT available and letdown is in service, THEN use auxiliary spray.

IF NOT, THEN use one PRZR PORV.

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

b. Maintain RCS subcooling based on core exit T/Cs GREATER THAN 0°F using Figure MIN SUBCOOLING.

c. Return to Step 37.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV:2 4 PAGE 33 of 34 43 Check If RHR Normal Cooling Can Be Established:

a.

RCS cold leg temperature - LESS THAN 350°F

b.

RCS pressure - LESS THAN 400 psig [300 psig adverse CNMT]

c.

Place letdown pressure controller (PCV-135) in MANUAL CLOSED

d.

Check following valves -

OPEN

"* AOV-371, letdown isolation valve

"* AOV-427, loop B cold leg to REGEN Hx

"* At least one letdown orifice valve (AOV-200A.

AOV-200B, or AOV-202)

e. Verify pressure on PI-135 LESS THAN 400 PSIG

f.

Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)

g. Establish RHR normal cooling (Refer to Attachment RHR COOL)

a. Return to Step 37.

b. Return to Step 41.

d.

Perform the following:

1) Reset both trains of XY relays for AOV-371 and AOV-427.

2)

Open AOV-371 and AOV-427.

3)

Open one letdown orifice valve.

e. Return to Step 41.

f.

IF RCS overpressure protection system can NOT be placed in service, THEN notify TSC of potential Tech Spec violation if RHR system is placed in service.

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 34 of 34 44 Continue RCS Cooldown To Cold Shutdown:

a. Maintain cooldown rate in RCS cold legs - LESS THAN 100°F/HR

b. Check narrow range level in both S/Cs LESS THAN 50%

45 Check Core Exit T/Cs -

LESS THAN 2000 F 46 Evaluate Long Term Plant Status:

a. Maintain cold shutdown conditions

b. Consult TSC

b. Control feed flow to maintain narrow range level less than 50%

in both S/Gs.

Return to Step 44.

- END-

"LOP:

TITLE:

ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM REV: 24 GENERATORS S~PAGE 1 of I ECA-2.1 APPENDIX LIST TITLE

1) RED PATH

SUMMARY

2)

3)

4)

5)

6)

7)

8)

9)

10)

11)

12)

13)

14)

15)

16)

17) 17)

SUBCOOLING (FIG-1.0)

(FIG-2.0)

SEAL LEAKOFF (FIG-4.0)

FAULTED S/G (ATT-10.0)

CNMT RECIRC FANS (ATT-4.0)

NC (ATT-13.0)

RCP START (ATT-15.0)

N2 PORVS (ATT-12.0)

SEAL COOLING (ATT-15.2)

SI/UV (ATT-8.4)

D/G STOP (ATT-8. 1)

SD-I (ATT-17.0)

SD-2 (ATT-17.1)

RHR COOL (ATT-14.1)

NO SW PUMPS (ATT-2.4)

LOSS OF OFFSITE POWER (ATT-8.5)

FIGURE MIN FIGURE SDM FIGURE RCP ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT FOLDOUT

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 1 of I RED PATH

SUMMARY

a.

SUBCRITICALITY - Nuclear power greater than 5%

b.

CORE COOLING -

Core exit T/Cs greater than 1200'F

-OR Core exit T/Cs greater than 7000F AND RVLIS level (no RCPs) less than 52% [55%

adverse CNMT]

c.

HEAT SINK -

Narrow range level in all S/Gs less than 5%

[25% adverse CNMT]

AND total feedwater flow less than 200 gpm

d.

INTEGRITY -

Cold leg temperatures decrease greater than 1000F in last 60 minutes AND RCS cold leg temperature less than 2850F

e.

CONTAINMENT -

CNMT pressure greater than 60 psig

UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS REV: 24 PAGE 1 of FOLDOUT PAGE

1. SI REINITIATION CRITERIA Manually start SI pumps as necessary if EITHER condition listed below occurs:

"o RCS subcooling based on core exit TCs -

LESS THAN 00 F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING "o PRZR level -

CHARGING CAN NOT CONTROL LEVEL GREATER THAN 5%

[30% ADVERSE CNMT]

2.

E-2 TRANSITION CRITERIA IF any S/G pressure increases at any time (except while performing SI termination in Steps 18 and 19),

THEN go to E-2, FAULTED STEAM GENERATOR ISOLATION, Step 1.

3.

COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 28%,

THEN go to ES-I.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.

4.

AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).

5.

E-3 TRANSITION CRITERIA IF any S/G level increases in an uncontrolled manner or any S/G has abnormal radiation, THEN manually start SI pumps as necessary AND go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 1.

"MI 1

===:!j

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 1 of 36 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIBL MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:___________

--,-I

- Cýý

~TITLE:

'CA-.

SGTR WITH LOSS OF REACTOR COOLANT -

.REV: 24

-31SbBCOOLED RECOVERY DESIRED PAGE 2 of 36 A.

PURPOSE - This procedure provides actions to cool down and depressurize the RCS to cold shutdown conditions while minimizing loss of RCS inventory and voiding in the RCS for an SGTR concurrent with a LOCA (i.e.

Ruptured-Faulted S/G).

B.

ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS - This procedure is entered from:

a.

E-3, STEAM GENERATOR TUBE RUPTURE, if ruptured S/G can not be isolated from any intact S/G.

b.

E-3, STEAM GENERATOR TUBE RUPTURE, if PRZR PORV can not be isolated by closing its block valve.

c.

E-3, STEAM GENERATOR TUBE RUPTURE, if ruptured S/G is faulted.

d.

E-3, STEAM GENERATOR TUBE RUPTURE, and ECA-3.3, SGTR WITHOUT PRESSURIZER PRESSURE CONTROL, if no intact S/G is available for RCS cooldown.

e.

E-3, STEAM GENERATOR TUBE RUPTURE, if minimum D/P between ruptured and intact S/G cannot be maintained.

f.

E-3, STEAM GENERATOR TUBE RUPTURE, if RCS subcooling is less than required.

g.

E-3, STEAM GENERATOR TUBE RUPTURE, if RCS pressure does not increase after closing PRZR PORV and block valve.

h.

E-3, STEAM GENERATOR TUBE RUPTURE, and ECA-3.3, SGTR WITHOUT PRESSURIZER PRESSURE CONTROL, if SI can not be terminated.

i.

E-3, STEAM GENERATOR TUBE RUPTURE, and ECA-3.3, SGTR WITHOUT PRESSURIZER PRESSURE CONTROL, if SI is reinitiated after termination.

j.

E-3, STEAM GENERATOR TUBE RUPTURE, ES-3.1, POST-SGTR COOLDOWN USING BACKFILL, ES-3.2, POST-SGTR COOLDOWN USING BLOWDOWN, and ES-3.3, POST-SGTR COOLDOWN USING STEAM DUMP, if SI accumulators should not be isolated.

I SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 3 of 36

k.

ES-3.1, POST-SGTR COOLDOWN USING BACKFILL, ES-3.2, POST-SGTR COOLDOWN USING BLOWDOWN, and ES-3.3, POST-SGTR COOLDOWN USING STEAM DUMP, if a non-ruptured S/G is not available for RCS cooldown.

I.

ECA-3.1 SGTR WITH LOSS OF REACTOR COOLANT REV:

24 E

SUBCOOLED RECOVERY DESIRED PAGE 4 of 36 CAUTION o-IF RWST LEVEL DECREASES TO LESS THAN 28%.

THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING ES-1.3.

TRANSFER TO COLD LEG RECIRCULATION.

"o IF PRZR LEVEL IS LESS THAN 50% OR IF ADVERSE CNMT CONDITIONS EXIST, THEN PRZR HEATERS SHOULD NOT BE ENERGIZED UNTIL PRZR LEVEL IS EVALUATED BY THE TSC.

"o IF OFFSITE POWER IS LOST AFTER SI RESET, THEN MANUAL ACTION MAY BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

(REFER TO ATT-8.5.

ATTACHMENT LOSS OF OFFSITE POWER)

NOTE:

o Foldout page should be open AND monitored periodically.

o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.

1 Reset SI 2 Reset CI:

a. Depress CI reset pushbutton

b. Verify annunciator A-26, CNMT

b. Perform the following:

ISOLATION EXTINGUISHED

1) Reset SI.

2) Depress CI reset pushbutton.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 5 of 36 3 Verify Adequate SW Flow:

"a. Check at RUNNING least two SW pumps

a. Manually start SW pumps as power supply permits (257 kw each).

IF less than two SW pumps running, THEN perform the following:

1) Ensure SW isolation.

2) Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-i).

3) IF NO SW pumps running, THEN refer to ATT-2.4, ATTACHMENT NO SW PUMPS.

4) IF only one SW pump running, THEN refer to AP-SW.2, LOSS OF SERVICE WATER.

5) Go to Step 5.

b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-i)

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 6 of 36 4 Establish IA to CNMT:

a. Verify non-safeguards busses

a. Perform the following:

energized from offsite power o

Bus 13 normal feed CLOSED

-OR o

Bus 15 normal feed CLOSED

b. Verify SW isolation valves to turbine building - OPEN

1) Close non-safeguards bus tie breakers:

"* Bus 13 to Bus 14 tie

"* Bus 15 to Bus 16 tie

2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).

IF NOT.

THEN evaluate if CNMT RECIRC fans should be stopped (Refer to Attachment CNMT RECIRC FANS).

b. Manually align valves.

"* MOV-4613 and MOV-4670

"* MOV-4614 and MOV-4664

c. Verify adequate air compressor(s)

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

f.

Verify IA to CNMT AOV-5392 -

OPEN

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 5.

WHEN IA restored, THEN do Steps 4e and f.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 7 of 36 STP ACTION/EXPECTED RESPONSE I°IRESPONSE NOT OBTAINEDI

• 5 Monitor All AC Busses BUSSES ENERGIZED BY OFFSITE

- POWER o

Normal feed breakers to all 480 volt busses CLOSED o

480 bus voltage GREATER THAN 420 VOLTS o

Emergency D/G output breakers OPEN Perform the following:

a. IF any AC emergency bus normal feed breaker open, THEN ensure associated D/G breaker closed.

b. Perform the following, as necessary:

1) Close non-safeguards bus tie breakers:

"* Bus 13 to Bus 14 tie

"* Bus 15 to Bus 16 tie

2) Place the following pumps in PULL STOP:

EH pumps

"* Turning gear oil pump

"* HP seal oil backup pump

3) Restore power to MCCs.

"* A from Bus 13

"* B from Bus 15

"* E from Bus 15

"* F from Bus 15

4) Start HP seal oil backup pump.

5) Ensure D/G load within limits.

6) WHEN bus 15 restored. THEN reset control room lighting.

7) Refer to Attachment SI/UV for other equipment lost with loss of offsite power.

c. Try to restore offsite power to all AC busses (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

.1 1/4,.'

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 8 of 36

• 6 Monitor If CNMT Spray Should Be Stopped:

a.

CNMT spray pumps ANY RUNNING

b.

Check the following:

"o CNMT pressure - LESS THAN 4 PSIG "o Sodium hydroxide tank level LESS THAN 55%

c. Reset CNMT spray

d. Check NaOH flow (FI-930) - NO FLOW

a. Go to Step 7.

b. Continue with Step 7.

conditions satisfied.

Steps 6c through f.

WHEN BOTH THEN do

d. Place NaOH tank outlet valve switches to CLOSE.

"* AOV-836A

"* AOV-836B

e. Stop CNMT spray pumps and place in AUTO

f.

Close CNMT spray pump discharge valves 0

0 0

0 MOV-860A MOV-860B MOV-860C MOV-860D

.1

I SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 9 of 36 CAUTION IF ANY RUPTURED S/G IS FAULTED, FEED FLOW TO THAT SIG SHOULD REMAIN ISOLATED DURING SUBSEQUENT RECOVERY ACTIONS UNLESS NEEDED FOR RCS COOLDOWN.

7 Check Ruptured S/G Level:

a. Narrow range level -

GREATER THAN 5% [25% adverse CNMT]

b. Close MDAFW pump discharge valve to ruptured S/G

"* S/G A, MOV-4007

"* S/G B, MOV-4008

c. Pull stop MDAFW pump for ruptured SIG

d. Close TDAFW pump flow control valve to ruptured S/G

• S/G A, AOV-4297

• S/G B. AOV-4298

e. Verify MDAFW pump crosstie valves CLOSED

a. IF ruptured S/G NOT faulted, THEN perform the following:

1) Maintain feed flow to ruptured S/G until level greater than 5% [25% adverse CNMT].

2) Continue with Step 8.

WHEN ruptured S/G level greater than 5% [25% adverse CNMT],

THEN do Steps 7b through e.

b. Dispatch AO to locally close valve.

d. Dispatch AO with locked valve key to locally close TDAFW pump manual feedwater isolation valve to ruptured S/G.

- S/G A. V-4005

- S/G B. V-4006

e. Manually close valves.

"* MOV-4000A

"* MOV-4000B

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 10 of 36 CAUTION RCS PRESSURE SHOULD BE MONITORED.

IF RCS PRESSURE DECREASES IN AN UNCONTROLLED MANNER TO LESS THAN 250 PSIG [465 PSIG ADVERSE CNMT].

THEN THE RHR PUMPS MUST BE MANUALLY RESTARTED TO SUPPLY WATER TO THE RCS.

8 Check If RHR Pumps Should Be Stopped:

a. Check RCS pressure:

a. Go to Step 9.

"o Pressure -

GREATER THAN 250 psig [465 psig adverse CNMT]

"o Pressure STABLE OR INCREASING

b. Stop RHR pumps and place in AUTO

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 11 of 36 9 Evaluate Plant Status:

a. Check auxiliary building radiation - NORMAL

a. Notify RP and refer to appropriate AR-RMS procedure.

Plant vent iodine (R-10B)

Plant vent particulate (R-13)

Plant vent gas (R-14)

CCW liquid monitor (R-17)

Letdown line monitor (R-9)

CHG pump room (R-4)

b. Direct RP to obtain following samples:

"* RCS boron

"* RCS activity

"* CNMT hydrogen

"* CNMT sump boron

c. Verify adequate Rx head cooling:

1) Verify at least one control rod shroud fan -

RUNNING

2)

Verify one Rx compartment cooling fan -

RUNNING

1) Manually start one fan as power supply permits (45 kw).

2) Perform the following:

"o Dispatch AO to reset UV relays at MCC C and MCC D.

"o Manually start one fan as power supply permits (23 kw).

0 0

7ý-

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 2 4 PAGE 12 of 36 SSTEP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 10 Establish 75 GPM Flow:

Charging

a. Charging pumps ANY RUNNING

b. Align charging pump suction to RWST:

o LCV-112B OPEN o

LCV-112C CLOSED

a. Perform the following:

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP #1 seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally isolate seal injection to affected RCP.

"a RCP A. V-300A

"* RCP B. V-300B

2) Ensure HCV-142 open.

b.

IF LCV-112B can NOT be opened.

THEN dispatch AO to locally open manual charging pump suction from RWST (V-358 located in charging pump room).

IF LCV-112C can NOT be closed, THEN perform the following:

1) Verify charging pump A NOT running and place in PULL STOP.

2) Direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).

c. Start charging pumps as necessary and establish 75 gpm total charging flow

"* Charging line flow

"* Seal injection

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 13 of 36 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 11 Check If S/G Secondary Side Is Intact:

"o Pressure in both S/Gs -

STABLE OR INCREASING "o Pressure in both S/Gs -

GREATER THAN 110 PSIG IF any S/G pressure decreasing in an uncontrolled manner OR completely depressurized, THEN verify faulted S/G isolated unless needed for RCS cooldown:

"* Steamlines

"* Feedlines IF NOT, THEN go to E-2. FAULTED STEAM GENERATOR ISOLATION, Step 1.

NOTE:

TDAFW pump flow control AOVs may drift open on loss of IA.

"*12 Monitor Intact S/G Levels:

a. Narrow range level -

GREATER THAN 5% [25% adverse CNMT]

b. Control feed narrow range

[25% adverse flow to maintain level between 17%

CNMT] and 50%

a. Maintain total feed flow greater than 200 gpm until narrow range level greater than 5% [25%

adverse CNMT] in intact S/G.

b. IF narrow range level in the intact S/G continues to increase in an uncontrolled manner, THEN consider isolating unnecessary release paths:

"* TDAFW pump steam supply valves

"* S/G blowdown valves

"* Refer to Attachment RUPTURED S/G

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 14 of 36 SSTEP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI NOTE:

Shutdown margin should be monitored Figure SDM).

13 Initiate RCS Cooldown To Cold Shutdown:

a. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 100lF/HR

b. Use RHR system if in service

c. Dump steam to condenser from intact S/G

"*14 Monitor Conditions For Subcooled Recovery:

a. Check RWST level -

GREATER THAN 50%

b. Check ruptured S/G narrow level LESS THAN 90% [80% adverse CNMT]

during RCS cooldown (Refer to

c. Manually or locally dump steam using intact S/G ARV.

IF no intact SIG available, THEN perform the following:

"o Use faulted SIG.

-OR "o IF RHR system NOT in service, THEN use ruptured S/G.

a.

IF CNMT sump B level is less than 113 inches, THEN go to ECA-3.2, SGTR WITH LOSS OF REACTOR COOLANT -

SATURATED RECOVERY DESIRED, Step 1.

b. Consult TSC to determine if recovery should be completed using ECA-3.2, SGTR WITH LOSS OF REACTOR COOLANT -

SATURATED RECOVERY DESIRED.

.1

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 15 of 36 15 Check RCS Subcooling Based On Go to Step 28.

Core Exit T/Cs -

GREATER THAN

-00 USING FIGURE MIN SUBCOOLING 16 Check Safeguards Pump Status Go to Step 24.

"o SI pumps ANY RUNNING

-OR "o RHR pumps ANY RUNNING IN INJECTION MODE 17 Place PRZR Heater Switches In The Following Positions:

o PRZR heater control group PULL STOP o

PRZR heater backup group OFF 18 Check PRZR level LESS THAN 13% [40% adverse CNMT]

Go to Step 20.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:2 4 PAGE 16 of 36

• 1

• OX*

O.

• ..O.

• OT O*

A CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.

THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.

NOTE:

o When using PRZR PORV, select one with an operable block valve.

o If auxiliary spray is in use, then spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

19 Depressurize RCS To Refill PRZR:

a. Use normal PRZR spray valve associated with running RCP

"* RCP A, PCV-431A

"* RCP B, PCV-431B

b.

PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

a.

Use one PRZR PORV.

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

IF no PORV available, THEN use auxiliary spray valve.

b. Continue with Step 20.

WHEN level greater than 13% [40%

adverse CNMT].

THEN stop RCS depressurization.

c. Stop RCS depressurization

---

I

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 17 of SACTI0 IRXSPýON SE0 NOT O

0TAINED

ý ý N * *

• CAUTI ON o-IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED NOT BE STARTED PRIOR TO A STATUS EVALUATION.

RCP SHOULD o

INADVERTENT CRITICALITY MAY OCCUR FOLLOWING NATURAL CIRCULATION COOLDOWN IF THE RCP IN THE RUPTURED LOOP IS STARTED FIRST.

20 Check If An RCP Should Be Started:

a. Both RCPs -

STOPPED

b. RCS subcooling based on core exit T/Cs GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

c.

PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

d. Try to start an RCP

1) Establish conditions for starting an RCP "o Bus 11A or 1iB energized "o Refer to Attachment RCP START

a. Stop all but one RCP and go to Step 21.

b.

Go to Step 28.

c. Return to Step 18.

2) Start one RCP

'I 36

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 18 of 36 21 Check If One Of Three SI Pumps Should Be Stopped:

a. Three SI pumps -

RUNNING

b.

RCS subcooling based on core exit T/Cs -

GREATER THAN 35°F

[900F adverse CNMT] USING FIGURE MIN SUBCOOLING

c.

Check PRZR level GREATER THAN 13% [40% adverse CNMT]

a.

Go to Step 22.

b. IF RCS hot leg temperatures greater than 320'F [3101F adverse CNMT],

OR IF RHR normal cooling in service, THEN go to Step 28.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320°F

[310°F adverse CNMT].

THEN ensure at least one RHR pump running in injection mode and go to Step 21c.

IF no RHR pump can be started in injection mode, THEN go to Step 28.

c. Do NOT stop SI pump. Return to Step 18.

d.

Stop one SI pump

.1

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 19 of 36 22 Check If One Of Two SI Pumps Should Be Stopped:

a.

Two SI pumps -

RUNNING

b. Determine required RCS subcooling from table:

c.

RCS subcooling based on core exit T/Cs -

GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING

d.

PRZR level GREATER THAN 13%

[40% adverse CNMT]

a. Go to Step 23.

c.

IF RCS hot leg temperatures greater than 320°F [310'F adverse CNMT],

OR IF RHR normal cooling in service, THEN go to Step 28.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320°F

[3100F adverse CNMT],

THEN ensure at least one RHR pump running in injection mode and go to Step 22d.

IF no RHR pump can be started in injection mode, THEN go to Step 28.

d. Do NOT stop SI pump. Return to Step 18.

e.

Stop one SI pump Charging Pump RCS Subcooling Criteria Availability NONE 120'F [200'F adverse CNMT]

ONE 115°F [190°F adverse CNMT]

TWO 105 0 F [180°F adverse CNMT]

THREE 100°F [175°F adverse CNMT]

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 20 of 36 23 Check If Last SI Pump Should Be Stopped:

a. One SI pump RUNNING

a. IF any RHR pump running in injection mode, THEN go to Step 28.

IF NOT, THEN go to Step 24.

b. Determine required RCS subcooling from table:

c.

RCS subcooling based on core exit T/Cs -

GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING

d.

PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

c.

IF RCS hot leg temperatures greater than 320°F [310°F adverse CNMT]

OR IF RHR normal cooling in service, THEN go to Step 28.

IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320'F

[310'F adverse CNMT],

THEN ensure at least one RHR pump running in injection mode and go to Step 23d.

IF no RHR pump can be started in injection mode, THEN go to Step 28.

d. Do NOT stop SI pump.

Return to Step 18.

e. Stop running SI pump Charging Pump RCS Subcooling Criteria Availability NONE Insufficient subcooling to stop SI pump.

ONE 255°F [2950F adverse CNMT]

TWO 235°F [285°F adverse CNMT]

THREE 210'F [270'F adverse CNMT]

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 21 of 36 24 Check If Charging Flow Should Be Controlled To Maintain PRZR Level:

a. Check RHR pumps -

RUNNING IN INJECTION MODE

a. Start charging pumps and control charging flow to maintain PRZR level and go to Step 25.

b.

Go to Step 28 Zý-

E0P:

ITITLE:

I ECA-L SGTR WITH LOSS OF REACTOR COOLANT -

REV:

24 ECA-3.1 SUBCOOLED RECOVERY DESIRED PAGE 22 of 36 CAUTION o

IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

o INADVERTENT CRITICALITY MAY OCCUR FOLLOWING NATURAL CIRCULATION COOLDOWN IF THE RCP IN THE RUPTURED LOOP IS STARTED FIRST.

25 Check RCP Status:

a.

RCPs AT LEAST ONE RUNNING

a. Try to start one RCP

1) IF RVLIS level (no RCPs) less than 95%,

THEN perform the following:

"o Increase PRZR level to greater than 65% [82%

adverse CNMT]

Dump steam to establish RCS subcooling based on core exit T/Cs to greater than 20°F using Figure MIN SUBCOOLING "o Energize PRZR heaters as necessary to saturate PRZR water

2) Establish conditions for starting an RCP:

"o Verify bus 11A or liB energized.

"o Refer to Attachment RCP START.

3) Start one RCP.

IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).

IF natural circulation NOT verified, THEN increase dumping steam.

b. Stop all but one RCP

EOP:

TITLE:

ECA-3.1 SGTR WITH LOSS OF REACTOR COOLANT -

REV: 24 SUBCOOLED RECOVERY DESIRED PAGE 23 of 36

• _.. A 0.**X

• *0" *I 0 0 0 *A

• **I CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION.

THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.

NOTE:

o WHEN using a PRZR PORV.

THEN select one with an operable block valve.

o If auxiliary spray is in use, then spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

26 Depressurize RCS To Minimize RCS Subcooling:

a. Depressurize using normal PRZR spray if available

a. Depressurize using one PRZR PORV.

IF IA NOT available. THEN refer to Attachment N2 PORVS.

IF no PORV available. THEN use auxiliary spray valve (AOV-296).

b. Energize PRZR heaters as necessary

c. Depressurize RCS until EITHER of the following conditions satisfied:

"o RCS subcooling based on core exit T/Cs - LESS THAN 10°F USING FIGURE MIN SUBCOOLING

-OR "o PRZR level -

GREATER THAN 75%

[65% adverse CNMT]

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 24 of 36 STP ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDt NOTE:

Leakage from ruptured S/G into concentration.

27 Verify Adequate Shutdown Margin

a. Direct RP to sample RCS and ruptured S/G for boron concentration

b. Verify boron concentration GREATER THAN REQUIREMENTS OF FIGURE SDM

• 28 Monitor SI Reinitiation Criteria:

a. RCS subcooling based on core exit T/Cs -

GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

b.

PRZR level -

GREATER THAN 5%

[30% adverse CNMT]

RCS will dilute RCS boron

b. Borate as necessary.

a. Manually start SI pumps as necessary and go to Step 29.

b. Manually start SI pumps as necessary and return to Step 18.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 25 of 36 29 Check If SI ACCUMs Should Be Isolated:

a. RCS subcooling based on core exit T/Cs -

GREATER THAN 0°F USING FIGURE MIN SUBCOOLING

a. IF both RCS hot leg temperatures less than 4000F. THEN go to Step 29c.

IF NOT.

THEN go to Step 30.

b.

PRZR level -

GREATER THAN 5%

[30% adverse CNMT]

c. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves e MOV-841, MCC C position 12F

• MOV-865.

MCC D position 12C

d.

Close SI ACCUM discharge valves

"* MOV-841

"* MOV-865

b. Return to Step 18.

d. Vent any unisolated ACCUMs:

1) Open vent valves for unisolated SI ACCUMs.

& ACCUM A. AOV-834A e ACCUM B, AOV-834B

2) Open HCV-945.

e. Locally reopen breakers for MOV-841 and MOV-865

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 26 of 36 30 Check If Emergency D/Gs Should Be Stopped:

a. Verify AC emergency busses energized by offsite power:

o Emergency DIG output breakers OPEN o

AC emergency bus voltage GREATER THAN 420 VOLTS o

AC emergency bus normal feed breakers - CLOSED

b.

Stop any unloaded emergency DiG and place in standby (Refer to Attachment D/G STOP) 31 Minimize Secondary System Contamination:

a. Isolate reject from hotwell to CST:

"o Place hotwell level controller (HC-107) in MANUAL at 50%

"o Verify hotwell level -

STABLE

b. Verify local actions to complete isolation of ruptured S/G (Refer to Attachment RUPTURED S/G)

a. Try to restore offsite power (Refer to ER-ELEC.1.

RESTORATION OF OFFSITE POWER).

a. IF hotwell level increasing.

THEN direct RP to sample hotwells for activity.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 27 of 36 STEPH ACToN/xPECTE RESoNsE REPOS NoT oBT0AINE 32 Verify Adequate CCW Hx:

a. Verify at least RUNNING SW Flow To two SW pumps

a. Manually start pumps as power supply permits (257 kw per pump).

IF less than two SW pumps can be operated, THEN perform the following:

1) IF1 NO SW pumps running, THEN refer to ATT-2.4, ATTACHMENT NO SW PUMPS.

2)

IF only one SW pump running, THEN refer to AP-SW.2.

LOSS OF SERVICE WATER.

3)

Go to Step 33.

b. Verify AUX BLDG SW isolation valves OPEN

b. Manually align valves.

• MOV-4615 and MOV-4734 o MOV-4616 and MOV-4735 This Step continued on the next page.

.5 SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 28 of 36 (Step 32 continued from previous page)

c. Verify CNMT annunciator TEMPERATURE RECIRC fan C-2.

HIGH ALARM - EXTINGUISHED

c. Perform the following:

1) Determine required SW flow to CCW HXs per table:

2) Direct AO to adjust SW flow to required value.

"o IF on normal SW discharge:

"* V-4619, CCW Hx A

"* V-4620, CCW Hx B

-OR "o IF on alternate SW discharge:

"* V-4619C.

CCW Hx A

"* V-4620B, CCW Hx B SW DISCHARGE CCW HXs IN REQUIRED SW FLOW ALIGNMENT SERVICE Normal 2

Total of 5000 -

6000 gpm equally divided to both HXs Normal 1

5000 6000 gpm to in-service HX Alternate 2

30-33" d/p across each HX Alternate 1

95-100" d/p across in-service IIX

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED 33 Check RCP Cooling

a. Check CCW to RCPs o

Annunciator A-7.

RETURN HIGH TEMP EXTINGUISHED REV:

24 PAGE 29 of 36 Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).

RCP 1A CCW OR LOW FLOW o

Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED

b.

Check RCP seal injection "o Labyrinth seal D/Ps -

GREATER THAN 15 INCHES OF WATER

-OR "o RCP seal injection flow to each RCP GREATER THAN 6 GPM Zý'-

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 30 of 36 34 Check If Seal Return Flow Should Be Established:

a. Verify instrument bus D ENERGIZED

b. Verify RCP #1 seal outlet temperature LESS THAN 235°F

c. Verify RCP seal outlet valves OPEN

• AOV-270A

• AOV-270B

d. Reset both trains of XY relays for RCP seal return isolation valve MOV-313

e.

Open RCP seal return isolation valve MOV-313

f.

Verify RCP #1 seal leakoff flow LESS THAN 6.0 GPM

g. Verify RCP #1 seal leakoff flow GREATER THAN 0.8 GPM

a. Perform the following:

1) Ensure steam dump mode control in MANUAL.

2) Restore power to instrument bus D from MCC B or MCC A (maintenance supply).

b.

Go to Step 35.

c. Manually open valves as necessary.

e. Perform the following:

1) Place MOV-313 switch to OPEN.

2) Dispatch AO with key to RWST gate to locally open MOV-313.

f.

Perform the following:

1) Trip the affected RCP

2) Allow 4 minutes for pump coast down.

THEN close the affected RCP seal discharge valve o RCP A. AOV-270A o RCP B. AOV-270B IF both RCP seal discharge valves are shut. THEN go to Step 35.

g. Refer to AP-RCP.1.

RCP SEAL MALFUNCTION.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 31 of 36 NOTE:

Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

35 Check If Source Range Detectors Should Be Energized:

a. Source range channels DEENERGIZED

b. Check intermediate range flux EITHER CHANNEL LESS THAN 10-10 AMPS

c.

Check the following:

"o Both intermediate range channels - LESS THAN 10-10 AMPS

-OR "o Greater than 20 minutes since reactor trip

d.

Verify source range detectors ENERGIZED

a.

Go to Step 35e.

b. Perform the following:

1) IF neither intermediate range channel is decreasing, THEN initiate boration.

2) Continue with Step 36.

WHEN flux is LESS THAN 10-10 amps on any operable channel, THEN do Steps 35c.

d and e.

c. Continue with Step 36.

WHEN either condition met, THEN do Steps 35d and e.

d. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).

IF source ranges can NOT be restored, THEN refer to ER-NIS.1.

SR MALFUNCTION and go to Step 36.

e. Transfer Rk-45 recorder to one source range and one intermediate range channel 1

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 32 of 36 SE ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 36 Establish Normal Shutdown Alignment:

a. Check condenser

- AVAILABLE

b. Perform the following:

"o Open generator disconnects e 1G13A71 e 9X13A73 "o Place voltage regulator to OFF "o Open turbine drain valves "o Rotate reheater steam supply controller cam to close valves "o Place reheater dump valve switches to HAND "o Stop all but one condensate pump

c. Verify Attachment SD-1 COMPLETE

a. Dispatch AO to perform Attachment SD-2.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 33 of 36

• U * * * * * * * * *.

0 0* A

• **I CAUTION FEED FLOW SHOULD NOT BE ESTABLISHED TO UNLESS IT IS NEEDED FOR RCS COOLDOWN.

ANY RUPTURED S/G WHICH IS ALSO FAULTED U

U

• 37 Monitor Ruptured S/G(s)

Narrow Range Level -

GREATER THAN 17% [25% adverse CNMT]

Refill ruptured S/G to 80% [60%

adverse CNMT] using feed flow.

IF either of the following conditions occurs. THEN stop feed flow to ruptured S/G unless needed for RCS cooldown:

o Ruptured SIG pressure decreases in an uncontrolled manner.

-OR o

Ruptured S/G pressure increases to 1020 psig.

• 38 Monitor RCP Operation:

a. RCPs ANY RUNNING

b. Check the following:

a.

Go to Step 39.

b. Stop affected RCP(s).

o RCP #1 seal DIP -

GREATER THAN 220 PSID o Check RCP seal leakage WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 34 of 36 f STEPH ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 39 Check Condenser Steam Dump Available -

CONDENSER VACUUM GREATER THAN 20 INCHES HG Manually or locally dump steam using intact S/G ARV.

IF no intact S/G available, THEN:

"o Use faulted S/G.

-OR "o IF RHR system NOT in service, THEN use ruptured S/G.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

2 4 PAGE 35 of 36 40 Check If RHR Normal Cooling Can Be Established:

a.

RCS cold leg temperature - LESS THAN 350°F

b.

RCS pressure - LESS THAN 400 psig [300 psig adverse CNMTI

c. Place letdown pressure controller in MANUAL CLOSED

d.

Check following valves -

OPEN

"* AOV-371, letdown isolation valve

"* AOV-427, loop B cold leg to REGEN Hx

"* At least one letdown orifice valve (AOV-200A, AOV-200B.

or AOV-202)

e. Verify pressure on PI-135 LESS THAN 400 PSIG

f.

Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)

g. Consult TSC to determine if RHR normal cooling should be established using Attachment RHR COOL

a.

Go to Step 41.

b.

Go to Step 41.

d. Perform the following:

1) Reset both trains of XY relays for AOV-371 and AOV-427.

2) Open AOV-371 and AOV-427.

3) Open one letdown orifice valve.

e.

Go to Step 41.

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 36 of 36 NOTE:

This procedure should be continued while obtaining CNMT hydrogen sample in Step 41.

41 Check CNMT Hydrogen Concentration:

a. Direct RP to start CNMT hydrogen monitors as necessary

b. Hydrogen concentration -

LESS

b. Consult TSC to determine if THAN 0.5%

hydrogen recombiners should be 42 Check Core Exit T/Cs -

LESS THAN 2000 F 43 Evaluate Long Term Plant Status:

a. Maintain cold shutdown conditions

b. Consult TSC placed in service.

Return to Step 8.

-END-

.1 TITLE:

SGTR WITH LOSS OF REACTOR COOLANT -REV:

24 SUBCOOLED RECOVERY DESIRED PAGE 1 of 1 ECA-3.1 APPENDIX LIST TITLE

1)

RED PATH

SUMMARY

2)

FIGURE MIN SUBCOOLING (FIG-1.0)

3)

FIGURE SDM (FIG-2.0)

4)

FIGURE RCP SEAL LEAKOFF (FIG-4.0)

5)

ATTACHMENT CNMT RECIRC FANS (ATT-4.o)

6)

ATTACHMENT SI/UV (ATT-8.4)

7)

ATTACHMENT RUPTURED S/G (ATT-16.0)

8)

ATTACHMENT N2 PORVS (ATT-12.0)

9)

ATTACHMENT RCP START (ATT-15.0)

10)

ATTACHMENT D/G STOP (ATT-8.1)

11)

ATTACHMENT SEAL COOLING (ATT-15.2)

12)

ATTACHMENT SD-i (ATT-17.0)

13)

ATTACHMENT SD-2 (ATT-17.1)

14)

ATTACHMENT RHR COOL (ATT-14.1)

15)

ATTACHMENT NC (ATT-13.0)

16)

ATTACHMENT NO SW PUMPS (ATT-2.4)

17)

ATTACHMENT LOSS OF OFFSITE POWER (ATT-8.5)

17)

FOLDOUT I

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV: 24 PAGE 1 of 1 RED PATH

SUMMARY

a.

SUBCRITICALITY -

Nuclear power greater than 5%

b.

CORE COOLING -

Core exit T/Cs greater than 12000F

-OR Core exit T/Cs greater than 7000F AND RVLIS level (no RCPs) less than 52% [55%

adverse CNMT]

c.

HEAT SINK -

Narrow range level in all S/Gs less than 5%

[25% adverse CNMT]

AND total feedwater flow less than 200 gpm

d.

INTEGRITY -

Cold leg temperatures decrease greater than 1000F in last 60 minutes AND RCS cold leg temperature less than 285°F

e.

CONTAINMENT -

CNMT pressure greater than 60 psig I

SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED REV:

24 PAGE 1 of 1 FOLDOUT PAGE

1.

SI REINITIATION CRITERIA IF EITHER condition listed below occurs, THEN manually start SI pumps as necessary:

o RCS subcooling based on core exit TCs -

LESS THAN 00 F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING o

PRZR level -

CHARGING CAN NOT CONTROL LEVEL GREATER THAN 5% [30% adverse CNMT]

2.

SATURATED RECOVERY CRITERIA IF ruptured S/G narrow range level increases to greater than 90% [80% adverse CNMT],

THEN consult TSC to determine if recovery should be completed using ECA-3.2, SGTR WITH LOSS OF REACTOR COOLANT -

SATURATED RECOVERY DESIRED.

3.

SECONDARY INTEGRITY CRITERIA IF any S/G pressure is decreasing in an uncontrolled manner or is completely depressurized AND has not been isolated, THEN go to E-2, FAULTED S/G ISOLATION, Step 1, UNLESS faulted S/G needed for RCS cooldown.

4.

COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 28%,

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

5.

AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS)

EOP:

TITLE:

s sscREV:

27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 1 of 30 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER -o&

RESPONSIBL MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:___________

EOP:

TITLE:

REV: 27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 2 of 30 A.

PURPOSE - This procedure provides actions for responding to a loss of secondary heat sink in both S/Gs.

B.

ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS - This procedure is entered from:

a.

E-0, REACTOR TRIP OR SAFETY INJECTION, when minimum AFW flow is not verified AND normal range level in both S/Gs is less than 5% [25% adverse CNMT]

b.

F-0.3, HEAT SINK Critical Safety Function Status Tree on a RED condition.

EOP:

TITLE:

R V FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 3 of 30 ACTONEXPCTD RSPNSE*ESPNSNO0TAIED CAUTION o-IF TOTAL FEED FLOW IS LESS THAN 200 GPM DUE TO OPERATOR ACTION. THIS PROCEDURE SHOULD NOT BE PERFORMED.

o FEED FLOW SHOULD NOT BE REESTABLISHED TO A FAULTED S/G IF A NON-FAULTED S/G IS AVAILABLE.

NOTE:

Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.

1 Check If Secondary Heat Sink Is Required:

a. RCS pressure -

GREATER THAN ANY NON-FAULTED S/G PRESSURE

a. IF RWST level greater than 28%.

THEN return to procedure and step in effect.

IF RWST level less than 28%.

THEN go to ES-l.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.

This Step continued on the next page.

(Step 1 continued from previous page)

b. Check RCS cold leg temperature

b. IF RCS pressure less than GREATER THAN 350°F 400 psig [300 psig adverse CNMT],

THEN try to place RHR System in service while continuing with this procedure:

1) Reset SI.

2) Place letdown pressure controller in MANUAL CLOSED.

3) Open the following valves (reset xy relays):

e AOV-371, letdown isolation valve e AOV-427, loop B cold leg to REGEN Hx e At least one letdown orifice valve (AOV-200A, AOV-200B, or AOV-202)

4)

IF pressure on PI-135 less than 400 psig, THEN establish RHR normal cooling (Refer to ATT-14.1, ATTACHMENT RHR COOL).

5) IF adequate cooling with RHR system established, THEN return to procedure and step in effect.

EOP:

TITLE:

REV: 2 7 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 5 of 30 f STEPH ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI

• 2 Monitor Secondary Heat Sink:

0 Verify either S/G level -

WIDE RANGE GREATER THAN 50 inches

[100 inches adverse CNMT]

o Verify PRZR pressure -

LESS THAN 2335 PSIG IF a loss of heat sink is indicated, THEN perform the following:

a. Trip both RCPs.

b.

Go to Step 13 to initiate bleed and feed cooling.

EOP:

TITLE:

REV:

27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 6 of 30 R

N OBTAINED CAUTION 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).

3 Try to Establish AFW Flow To At Least One S/G:

a. Check SIG blowdown and samples valves -

CLOSED

b.

Check MCB indications for cause of AFW failure:

1) Verify CST level GREATER THAN 5 FEET

2) Verify busses supplying power to MDAFW pumps - ENERGIZED

"* Bus 14

"* Bus 16

3) Determine AFW flow requirements per ATT-22.0, ATTACHMENT RESTORING FEED FLOW

4) Check AFW valve alignment o

AFW pump discharge valves OPEN

a. Place S/G blowdown and sample valve isolation switch to CLOSE.

1) Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS.

2) Continue attempts to restore power to MDAFW pumps.

4) Dispatch AO to locally align valves.

"* MOV-4007

"* MOV-4008

"* MOV-3996 o

TDAFW pump flow control valves OPEN

• AOV-4297

• AOV-4298 This Step continued on the next page.

EOP:

TITLE:

REV: 2"7 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 7 of 30 STP ACTION/EXPECTED RESPONSE REISPONSE NOT OBTAINEDI (Step 3 continued from previous page)

c.

Check AFW pumps -

ALL RUNNING

c. Perform the following:

1) Manually start MDAFW pumps.

2)

Check TDAFW pump steam supply valves OPEN.

• MOV-3504A e MOV-3505A

3)

If necessary dispatch AO to locally reset TDAFW pump governor valve.

4) IF NO AFW pumps operable, THEN go to Step 4.

d. Control AFW flow per requirements of ATT-22.0, ATTACHMENT RESTORING FEED FLOW

e.

Check total flow to S/Gs GREATER THAN 200 GPM

e. Continue attempts to restore AFW flow and go to Step 4.

f.

Return to procedure and step in effect 4 Stop Both RCPs CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET.

THEN MANUAL ACTION MAY BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

(REFER TO ATT-8.5, ATTACHMENT LOSS OF OFFSITE POWER) 5 Reset SI If Actuated

EOP:

TITLE:

REV: 27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 8 of 30 S STEPH ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 6 Try To Establish MFW Flow To At Least One S/G:

a. Check any MFW pump - AVAILABLE

b. Check condensate system:

"o Condensate pump - ANY RUNNING "o MFW pump suction pressure GREATER THAN 185 PSIG

c. Establish MFW flow:

1) Check MFW pump discharge valves -

CLOSED

2) Verify MFW regulating or bypass valves - OPERABLE

3) Place A and B MFW regulating valve and bypass valve controllers in MANUAL at 0%

demand.

4) Dispatch AO to restore MFW pump SW cooling

5) Verify S/G blowdown key switches in NORMAL

6) Ensure Annunciator H-4,MAIN FEED PUMP OIL SYSTEM EXTINGUISHED

7) Close Condensate Bypass valve, AOV-3959.

8) Ensure Annunciator H-li.

FEED PUMP SEAL WATER LO DIFF PRESS 15 PSI -

EXTINGUISHED

9) Ensure one MFW pump recirc valve -

OPEN

10) Start selected MFW pump This Step continued on the next page.

a.

b.

Go to Step 7.

IF offsite power available. THEN try to place condensate system in service.

IF NOT, THEN go to Step 7.

c.

IF MFW flow can NOT be established, THEN go to Step 7.

EOP:

TITLE:

,REV: 2 7 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 9 of 30 (Step 6 continued from previous page)

11)

Open MFW pump discharge valve

12) Adjust MFW regulating or bypass valves to control MFW flow per requirements of ATT-22.0.

ATTACHMENT RESTORING FEED FLOW

d.

Go to Step 11 7 Establish SAFW Flow:

a. Perform the following:

1) Align SAFW system for operation (Refer to ATT-5.1.

ATTACHMENT SAFW)

2) Determine SAFW flow requirements per ATT-22.0.

ATTACHMENT RESTORING FEED FLOW

3) Start both SAFW pumps

4) Control SAFW flow per requirements of ATT-22.0.

ATTACHMENT RESTORING FEED FLOW

5) Verify SAFW total flow GREATER THAN 200 GPM

b.

Go to Step 11

a. IF greater than 200 gpm total SAFW flow can NOT be established. THEN go to Step 8.

A....0.

• O O *.

• CAUTION IF WIDE RANGE LEVEL IN BOTH SIGS DECREASES TO LESS THAN 50 INCHES [100 INCHES ADVERSE CNMT]

OR IF PRZR PRESSURE INCREASES TO GREATER THAN 2335 PSIG DUE TO LOSS OF HEAT SINK.

THEN STEPS 13 THROUGH 15 SHOULD BE IMMEDIATELY INITIATED FOR BLEED AND FEED.

8 Establish Conditions to Feed S/G(s) From Condensate System:

a. Check condensate pumps ANY RUNNING

b. Establish condensate flowpath (Refer to ATT-5.0, ATTACHMENT COND TO S/G)

c. De-energize PRZR heaters 9 Establish Condenser Steam Dump Pressure Control:

a. Verify condenser available:

"o Any MSIV OPEN "o Annunciator G-15, STEAM DUMP ARMED -

LIT

b. Adjust condenser steam dump controller HC-484 to highest S/G pressure

c. Verify condenser steam dump controller HC-484 in AUTO

d. Place steam dump mode selector switch to MANUAL

a. IF offsite power available, THEN manually start at least one condensate pump.

IF a condensate pump can NOT be started, THEN go to Step 12.

a. Place S/G ARV controllers in AUTO at desired pressure and go to Step 10.

RP E

R N

OBAINED*

CAUTION FOLLOWING BLOCK OF AUTOMATIC SI ACTUATION, MANUAL SI ACTUATION MAY BE REQUIRED IF CONDITIONS DEGRADE.

NOTE:

If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.

10 Establish Condensate Flow to S/G:

a. Check RCS pressure GREATER THAN 1950 PSIG

b. Depressurize RCS to less than 1950 psig:

1)

Check letdown -

IN SERVICE

2) Depressurize using auxiliary spray valve (AOV-296)

a.

Go to Step 10c.

1) Use one PRZR PORV.

IF IA to CNMT.

AOV-5392, NOT open, THEN refer to ATT-12.0, ATTACHMENT N2 PORVS.

a) IF PORV NOT available, THEN use auxiliary spray valve, AOV-296 and go to step 10c.

2) Use one PRZR PORV.

IF IA to

CNMT, AOV-5392.

NOT open, THEN refer to ATT-12.0, ATTACHMENT N2 PORVS.

c.

WHEN PRZR pressure less than 1950 psig, THEN place SI block switches to BLOCK o Train A e Train B

d. Verify SAFETY INJECTION BLOCKED status light - LIT This Step continued on the next page.

EOP:

TITLE:

REV:

27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 12 of 30 (Step 10 continued from previous page)

e. Stop depressurizing RCS and maintain RCS pressure less than 1950 psig

f.

Manually adjust MFW regulating or bypass valves to control feed flow per requirements of ATT-22.0.

ATTACHMENT RESTORING FEED FLOW

g. Dump steam to condenser at maximum rate to depressurize at least one S/G to less than 380 psig

h. Verify condensate flow to S/Gs

g. Manually or locally dump steam using intact S/G ARV at maximum rate to depressurize at least one S/G to less than 380 psig.

h. Go to Step 12.

11 Check S/G Levels:

a. Narrow range level in at least one S/G -

GREATER THAN 5% [25%

adverse CNMT]

b. Return to procedure and step in effect 12 Verify Secondary Heat Sink:

a. Check the following:

"o Either S/G level -

WIDE RANGE GREATER THAN 50 inches

[100 inches adverse CNMT]

"o PRZR pressure - LESS THAN 2335 PSIG

a. IF feed flow verified and level increasing in at least one S/G, THEN maintain flow to restore narrow range level greater than 5% [25% adverse CNMT].

IF NOT verified, THEN go to Step 12.

a.

IF loss of heat sink is indicated, THEN perform the following:

1) Go to Step 13 to initiate bleed and feed cooling.

b. Return to Step 1

A...C....*.

R O

• O O *A CAUTION STEPS 13 THROUGH 15 MUST BE PERFORMED QUICKLY IN ORDER TO ESTABLISH RCS HEAT REMOVAL BY RCS BLEED AND FEED.

13 Actuate SI and CI 14 Verify RCS Feed Path:

a. Check SI pumps AT LEAST ONE RUNNING

b. Check valve alignment for operating SI pumps -

PROPER EMERGENCY ALIGNMENT Manually start pumps and align valves as necessary to establish RCS feed path.

IF a feed path can NOT be established. THEN continue attempts to establish feed flow.

Return to Step 3.

EOP:

TITLE:

REV: 2 7 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 14 of 30 15 Establish RCS Bleed Path:

a. Open both PRZR PORV block valves

a. Ensure power to MCCs supplying block valves.

"* MCC D for MOV-515

"* MCC C for MOV-516 IF any block valve can NOT be opened.

THEN dispatch AO to locally check breaker:

"* MOV-515, MCC D position 6C

"* MOV-516, MCC C position 6C

b. Place both PRZR PORV switches to OPEN

c. Align RCS overpressure protection system to open both PRZR PORVs (Refer to ATT-12.0, ATTACHMENT N2 PORVS)

d. Verify PORVs -

BOTH OPEN

d. IF BOTH PRZR PORVs can NOT be opened.

THEN ensure both PORV switches in OPEN.

A* O*

• O.

...*O

• O O CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, TO RESTART SAFEGUARDS EQUIPMENT.

(REFER OFFSITE POWER)

THEN MANUAL ACTION MAY BE REQUIRED TO ATT-8.5, ATTACHMENT LOSS OF 16 Check If SI Can Be Reset:

a. Check SI blocked status light EXTINGUISHED

b. Check the following:

"o PRZR pressure -

LESS THAN 1750 PSIG

- OR "o Either steamline pressure LESS THAN 514 PSIG

a. Place SI block switches to UNBLOCK

b. IF PRZR pressure increasing, THEN to Step 17.

stable or reset SI and go IF PRZR pressure decreasing, THEN perform the following:

1) WHEN PRZR pressure less than 1750 psig. THEN reset SI.

2)

Go to Step 17.

c. Reset SI 17 Reset CI:

a. Depress CI reset pushbutton

b. Verify annunciator A-26.

CONTAINMENT ISOLATION EXTINGUISHED

b. Perform the following:

1) Reset SI.

2) Depress CI reset pushbutton

18 Verify Adequate SW Flow:

a. Verify at least RUNNING two SW pumps

a. Manually start pumps as power supply permits (257 kw each).

IF less than two SW pumps can be

operated, THEN perform the following:

1) IF NO SW pumps running, THEN refer to ATT-2.4.

ATTACHMENT NO SW PUMPS.

2)

IF only one SW pump running, THEN refer to AP-SW.2.

LOSS OF SERVICE WATER.

3)

Go to Step 21.

b. Verify AUX BLDG SW isolation valves -

AT LEAST ONE SET OPEN

b. Manually align valves.

"* MOV-4615 and MOV-4734

" MOV-4616 and MOV-4735

EOP:

TITLE:

REV: 27 FR-H.I RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 17 of 30 19 Establish IA to CNMT:

a. Verify non-safeguards busses energized from offsite power "o Bus 13 normal feed -

CLOSED

-OR "o Bus 15 normal feed - CLOSED

b. Verify turbine building SW isolation valves -

OPEN

a. Perform the following:

1) Close non-safeguards bus tie breakers:

"* Bus 13 to Bus 14 tie

"* Bus 15 to Bus 16 tie

2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).

IF NOT, THEN evaluate if CNMT RECIRC fans should be stopped (Refer to ATT-4.0, ATTACHMENT CNMT RECIRC FANS).

3) Start HP seal oil backup pump.

4)

WHEN bus 15 restored. THEN reset control room lighting.

b. Manually align valves.

e MOV-4613 and MOV-4670 e MOV-4614 and MOV-4664

c. Verify adequate air compressor(s) -

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

f. Verify IA to CNMT AOV-5392 - OPEN

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.l, LOSS OF INSTRUMENT AIR).

2) Continue with Step 21.

WHEN IA restored, THEN do Steps 19e, f and 20.

f.

Continue with Step 21.

WHEN IA restored to CNMT, THEN do Step 20.

EOP:

TITLE:

REV27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 18 of 30 NOTE:

PRZR PORVs may close temporarily until adequate IA pressure is restored in CNMT.

20 Restore RCS Overpressure Protection System To Standby:

a. Verify instrument bus D ENERGIZED

a. Perform the following:

1) Ensure steam dump mode control in MANUAL.

2) Restore power to instrument bus D from MCC B or MCC A (maintenance supply).

b. Place PORV PCV-430 and PCV-431C N2 arming switches to BLOCK

• SOV-8619A o SOV-8619B

c. Close PORV PCV-430 and PCV-431C N2 SURGE TK VLVs

"* SOV-8616A

"* SOV-8616B

SSTEP ACTION/EXPECTED REPONSEI IRSPONSE NOT OBTAINEDI 21 Verify Adequate RCS Bleed Path:

"o Core exit T/Cs STABLE OR DECREASING "o RVLIS Level (no RCPs)

GREATER THAN 77% [82% adverse CNMT]

Perform the following:

a. Open Rx head vent valves.

"* SOV-590

"* SOV-591

"* SOV-592

"* SOV-593

b. Align any available low pressure water source to intact S/Gs.

IF no low pressure water source can be aligned, THEN go to Step 22.

c. Depressurize at least one intact S/G to atmospheric pressure using S/G ARV.

CAUTION ACTIONS TAKEN TO INITIATE RCS BLEED AND FEED SHALL NOT BE REVERSED WHEN PERFORMING STEPS 1 THROUGH 12 OF E-0, REACTOR TRIP OR SAFETY INJECTION.

22 Complete Steps 1 through 12 Of E-0, REACTOR TRIP OR SAFETY INJECTION, While Continuing With This Procedure

EOP:

TITLE:

REV: 2"7 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 20 of 30 CAUTION THE RCS BLEED PATH MUST BE MAINTAINED EVEN THAN SI PUMP SHUTOFF HEAD.

IF RCS PRESSURE REMAINS GREATER 23 Maintain RCS Heat Removal:

"o Maintain SI flow "o Maintain both PRZR PORVs and block valves OPEN 24 Check Normal Power Available To Charging Pumps:

"o Bus 14 normal feed breaker CLOSED "o Bus 16 normal feed breaker CLOSED Verify adequate capacity to run (75 kw each).

emergency D/G charging pumps IF NOT, THEN evaluate if CNMT RECIRC fans can be stopped (Refer to ATT-4.0. ATTACHMENT CNMT RECIRC FANS).

EOP:

TITLE:

REV: 27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 21 of 30 25 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 #1 seal outlet temperature offscale high, THEN dispatch AO with key to RWST gate to locally close seal injection needle valve(s) to affected RCP:

"* RCP A. V-300A

"* RCP B, V-300B

2) Ensure HCV-142 open, demand at 0%.

b. Align charging pump suction to

b. IF LCV-112B can NOT be opened, RWST:

THEN dispatch AO to locally open manual charging pump suction "o LCV-112B OPEN from RWST (V-358 located in charging pump room).

"o LCV-112C CLOSED IF LCV-112C can NOT be closed, THEN perform the following:

1) Verify charging pump A NOT running and place in PULL STOP.

2) Direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).

c. Start charging pumps as necessary to establish maximum charging flow

R O *O OB*N*

CAUTION o-IF RWST LEVEL DECREASES TO LESS THAN 28%.

THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING STEPS 1 THROUGH 14 OF ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

o IF CONTAINMENT PRESSURE INCREASES TO GREATER THAN 28 PSIG, CONTAINMENT SPRAY SHOULD BE VERIFIED.

o RHR PUMPS SHOULD NOT BE RUN LONGER THAN EXCHANGERS.

1 HOUR WITHOUT CCW TO THE RHR HEAT

• 26 Monitor If CNMT Spray Should Be Stopped:

a.

CNMT spray pumps RUNNING

b.

Check the following:

CNMT pressure LESS THAN 4 PSIG Sodium hydroxide tank level LESS than 55%

c. Reset CNMT spray

d.

Check NaOH flow (FI-930)

NO FLOW

a.

Go to Step 27.

b. Continue with Step 27.

WHEN BOTH conditions satisfied, THEN do Steps 26c through 26f.

d. Place NaOH tank outlet valve switches to CLOSE.

"* AOV-836A

"* AOV-836B

e. Stop CNMT spray pumps and place in AUTO

f.

Close CNMT spray pump discharge valves S

S 0

S MOV-860A MOV-860B MOV-860C MOV-860D

"EOP:

TITLE:

REV:

27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 23 of 30 RESPONSE NOT OBTAINED 27 Continue Attempts To Establish Secondary Heat Sink

-In At Least One S/G:

a. Attempt to restore one or more of the following:

AFW flow

"* Main FW flow

"* Standby AFW flow

"* Condensate flow

b.

WHEN a feed source is available, THEN control feed flow per requirements of ATT-22.0.

ATTACHMENT RESTORING FEED FLOW 28 Check For Adequate Secondary Heat Sink:

a. Check narrow range level in at least one S/G -

GREATER THAN 5%

[25% adverse CNMT]

a. Return to Step 27.

b. Adjust S/G ARV controllers to existing S/G pressure CAUTION IF THE RCS IS WATER SOLID, THEN ANY INCREASE IN RCS TEMPERATURE MAY RESULT IN A SIGNIFICANT RCS PRESSURE INCREASE.

RCS HEATUP SHOULD BE PREVENTED.

29 Monitor RCS Temperatures:

"o Core exit T/Cs - DECREASING "o RCS hot leg temperatures DECREASING Perform the following:

a. Control steam dump and feed flow to establish natural circulation and stabilize RCS temperature.

b. Return to Step 27.

SE ACTION/EXPECTED RESPONSEI RESPONSE NOT OBTAINEDI 30 Check CCW Pumps -

ANY RUNNING Perform the following:

a.

IF any RCP #1 seal outlet temperature offscale high. THEN isolate CCW to thermal barrier of affected RCP(s).

e RCP A, MOV-749A and MOV-759A e RCP B. MOV-749B and MOV-759B

b. Manually start one CCW pump (122 kw).

CAUTION IF RCS IS SOLID, CLOSURE OF HEAD VENTS MAY RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS TEMPERATURE AND RCS INFLOW AND OUTFLOW ARE CAREFULLY CONTROLLED.

31 Verify Reactor Head Vent Valves -

CLOSED 0

0 0

0 Manually close valves.

SOV-590 SOV-591 SOV-592 SOV-593

R O *O O A*

CAUTION IF RCS IS SOLID, THEN TERMINATION OF BLEED AND FEED MAY RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS TEMPERATURE AND RCS INFLOW AND OUTFLOW ARE CAREFULLY CONTROLLED.

32 Check If One Of Three SI Pumps Should Be Stopped:

a. Three SI pumps -

RUNNING

b.

RCS subcooling based on core exit T/Cs GREATER THAN 35°F

[90°F adverse CNMT] USING FIG-1.0.

FIGURE MIN SUBCOOLING

c.

Check PRZR level -

GREATER THAN 13% [40% adverse CNMT]

a.

Go to Step 33.

b.

Check the following:

"o RCS pressure greater than 1625 psig [1825 psig adverse CNMT]

RCS subcooling based on core exit T/Cs greater than 0°F using FIG-1.0, FIGURE MIN SUBCOOLING IF NOT, THEN go to Step 35.

c.

Do NOT stop SI pump.

Go to Step 35.

d. Stop one SI pump

EOP:

TITLE:

REV: 27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 26 of 30 STP ACTION/EXPECTED RSPONSEt RESPONSE NOT OBTAINEDI 33 Check If One Of Two SI Pumps Should Be Stopped:

a. Two SI pumps RUNNING

b. Determine required RCS subcooling from table:

c.

RCS subcooling based on core exit T/Cs -

GREATER THAN VALUE FROM TABLE ABOVE USING FIG-1.0.

FIGURE MIN SUBCOOLING

d.

PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

a. Go to Step 34.

c.

Check the following:

"o RCS pressure greater than 1625 psig [1825 psig adverse CNNT]

RCS subcooling based on core exit T/Cs greater than 0°F using FIG-1.0. FIGURE MIN SUBCOOLING IF NOT.

THEN go to Step 35.

d.

Do NOT stop SI pump.

Go to Step 35.

e. Stop one SI pump Charging Pump RCS Subcooling Criteria Availability NONE 120°F [200°F adverse CNMT]

ONE 115'F [190*F adverse CNMT]

TWO 105'F [180'F adverse CNMT]

THREE 100°F [175°F adverse CNMT]

SE ACTION/EXPECTED RESPONS REISPONSE NOT OBTAINEDI 34 Check If Last SI Pump Should Be Stopped:

a.

One SI pump -

RUNNING

b.

Check the following:

o RCS subcooling based on core exit T/Cs greater than 0°F using FIG-1.0, FIGURE MIN SUBCOOLING o

RCS pressure greater than 1625 psig [1825 psig adverse CNMT]

c.

PRZR level -

GREATER THAN 13%

[40% adverse CNMT]

a. Go to Step 37.

b.

Go to Step 35.

c.

Do NOT stop SI pump.

Step 35.

d. Stop running SI pump

e.

Go to Step 37 NOTE:

After closing a PORV, it may be necessary to wait for RCS pressure to increase to permit stopping SI pumps in SI reduction steps.

35 Check PRZR PORVs And Associated Block Valves -

ANY BLEED PATH OPEN Go to appropriate plant procedure:

"o IF RWST level greater than 28%.

THEN go to E-1.

LOSS OF REACTOR OR SECONDARY COOLANT.

-OR "o IF RWST level less than 28%.

THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

Go to

...*...o

x.

o.

CAUTION IF RCS IS

SOLID, CLOSURE OF PORVS WILL RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS TEMPERATURE AND RCS INFLOW AND OUTFLOW ARE CAREFULLY CONTROLLED.

36 Isolate PRZR Bleed Paths:

a.

PRZR PORVs BOTH OPEN

a. Perform the following:

1) Stop all but one charging pump.

2) Control charging flow as necessary to maintain RCS pressure and PRZR level.

3) Establish excess letdown as follows:

a) Place AOV-312 to NORMAL.

b) Ensure CCW pump running.

c) Manually open CCW from excess letdown Hx open (AOV-745).

d) Ensure excess letdown flow control valve, HCV-123 is closed, demand at 0.

e) Reset both trains of XY relays for MOV-313.

f)

Open MOV-313.

g) Open excess letdown isolation valve AOV-310.

h) Slowly open HCV-123.

This Step continued on the next page.

EOP:

TITLE:

REV:

27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK I

PAGE 29 of 30 (Step 36 continued from previous page)

b. Close one open PRZR PORV

b. Close PORV block valve.

IF block valve can NOT be closed, THEN go to appropriate plant procedure:

o IF RWST level greater than 28%.

THEN go to E-1, LOSS OF REACTOR OR SECONDARY COOLANT.

-OR o

IF RWST level less than 28%.

THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

c. Return to Step 32 37 Check PRZR PORVs -

BOTH CLOSED 38 Check If RHR Pumps Should Be Stopped:

a. RHR pumps ANY RUNNING IN INJECTION MODE

b. Check RCS pressure:

1) Pressure -

GREATER THAN 250 psig [465 psig adverse CNMT]

2) Pressure - STABLE OR INCREASING Close both PRZR PORVs.

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

a. Go to Step 39.

b.

Go to appropriate plant procedure:

IF RWST level greater than 28%.

THEN go to E-1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1.

- OR "o IF RWST level less than 28%,

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

c. Stop RHR pumps and place in AUTO

"EOP:

TITLE:

REV: 27 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 30 of 30 39 Start Charging Pumps As Necessary And Control

-Charging Flow To Maintain PRZR Level 40 Go To ES-I.I, SI TERMINATION, Step 8

-END-

EOP:

TITLE:

REV: 27 FR-H.I RESPONSE TO LOSS OF SECONDARY HEAT SINK I

PAGE 1 of I FR-H.1 APPENDIX LIST TITLE FIGURE MIN ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT ATTACHMENT SUBCOOLING (FIG-1.0)

CNMT RECIRC FANS (ATT-4.0)

COND TO S/G (ATT-5.0)

N2 PORVS (ATT-12.0)

RHR COOL (ATT-14.1)

SAFW (ATT-5.1)

RESTORING FEED FLOW (ATI NO SW PUMPS (ATT-2.4)

LOSS OF OFFSITE POWER (I

1)

2)

3)

4)

5)

6)

7)

8) 9)

22.0) iTT-8.5)

EOP:

TITLE:

REV: 6 FR-Z.1 RESPONSE TO HIGH CONTAINMENT PRESSURE PAGE 1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSVLE MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:___________

EOP:

TITLE:

REV: 6 FR-Z.1 RESPONSE TO HIGH CONTAINMENT PRESSURE PAGE 2 of 6 A.

PURPOSE - This procedure provides actions to respond to a high CNMT pressure.

B.

ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS - This procedure is entered from:

a.

F-0.5, CONTAINMENT Critical Safety Function Status Tree, on a RED or ORANGE condition.

SE ACTION/EXPECTED RSPONSEt RESPONSE NOT OBTAINEDI 1 Verify All CI And CVI Valve Status Lights -

BRIGHT IF flow path NOT required, THEN manually close CI and CVI valves.

IF valves can NOT be verified closed by MCB indication, THEN dispatch AO to locally close valves. (Refer to Attachment CI/CVI).

CAUTION IF ECA-1.1.

LOSS OF EMERGENCY COOLANT RECIRCULATION, IS IN EFFECT.

THEN CNMT SPRAY SHOULD BE OPERATED AS DIRECTED IN ECA-1.1, RATHER THAN STEP 2 BELOW.

2 Verify CNMT Spray Actuated:

a. Verify RWST outlet to SI and CNMT spray pumps OPEN

"* MOV-896A

"* MOV-896B

a. IF in RHR recirculation mode, THEN perform the following:

1) Operate SI pumps and one CNMT spray pump as directed in ES-1.3.

TRANSFER TO COLD LEG RECIRCULATION.

Step 14.

2) Go to Step 3.

b. Verify CNMT spray pumps -

RUNNING

c. Verify NaOH flow (FI-930)

d. Verify CNMT spray pump discharge valves -

OPEN

b. Manually start pumps.

c. IF NaOH flow NOT indicated, THEN place switches for NaOH tank outlet valves to OPEN.

"* AOV-836A

"* AOV-836B

d. Ensure at least one in each set open.

e MOV-860A or MOV-860B

• MOV-860C or MOV-860D

• MOV-860A

• MOV-860B

• MOV-860C

• MOV-860D

EOP:

TITLE:

REV:

6 FR-Z.l RESPONSE TO HIGH CONTAINMENT PRESSURE S~PAGE 4 of 6 SACTON/XPETF.DRESONSI IRESPýONSE NýOT OBTAINEýD

ý 3 Verify CNMT RECIRC Fans Running:

a. All fans -

RUNNING

b. Charcoal filter dampers green status lights -

EXTINGUISHED

a. Manually start fans.

b. Dispatch personnel to relay room with relay rack key to locally open dampers by pushing in trip relay plungers.

"* AUX RELAY RACK RA-2 for fan A

"* AUX RELAY RACK RA-3 for fan C 4 Verify MSIVs -

CLOSED Manually close valves.

• ..0.

• O

• *T O

• I CAUTION o-AT LEAST ONE S/G SHALL BE MAINTAINED AVAILABLE FOR RCS COOLDOWN.

o IF BOTH S/GS ARE FAULTED.

THEN AT LEAST MAINTAINED TO EACH S/G.

50 GPM FEED FLOW SHOULD BE 5 Check If S/G Secondary Side Is Intact:

o Pressure in both S/Gs OR INCREASING o

Pressure in both THAN 110 PSIG STABLE S/Gs -

GREATER Isolate feed flow to faulted S/G:

a. Ensure faulted S/G MDAFW pump discharge valve closed.

"* SIG A. MOV-4007

"* S/G B. MOV-4008

b. Ensure faulted S/G TDAFW flow control valve closed.

"* S/G A. AOV-4297

"* S/G B. AOV-4298

c. Ensure faulted S/G MFW regulating valve and bypass valve closed.

"* SIG A.

HCV-466 and HCV-480

"* S/G B.

HCV-476 and HCV-481

d. Ensure MFW pump discharge valves closed.

IF valves can NOT be closed.

THEN dispatch AO to locally close valves as necessary to isolate flow.

6 Return To Procedure And Step In Effect

-END-

EOP:

TITLE:

REV: 6 FR-Z.1 RESPONSE TO HIGH CONTAINMENT PRESSURE PAGE I of 1 FR-Z.l APPENDIX LIST TITLE

1) ATTACHMENT CI/CVI (ATT-3.0)