ML17262A885

Rev 7 to EOP ECA-1.1, Loss of Emergency Coolant Recirculation.

ML17262A885
Person / Time
Site:	Ginna
Issue date:	05/06/1992
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A884	List: ML17262A883 ML17262A885 ML17262A886 ML17262A887 ML17262A888 ML17262A889 ML17262A890 ML17262A891 ML17262A892 ML17262A893 ML17262A895 ML17262A896 ML17262A897 ML17309A489
References
ECA-1.1, NUDOCS 9206160385
Download: ML17262A885 (132)

Text

EOP: T1TLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 1 of 27 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFF CTI E DATE CATEGORY 1.0 REVIEWED BY:

V 9206160385 920605 PDR ADOCK 05000244 PDR

Cgv EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 2 of 27 PURPOSE This procedure provides actions to restore emergency coolant recirculation capability, to delay depletion of the RHsT by adding makeup and reducing outflow, and to depressurize the RCS to minimize break flow.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure is entered from:

a. E-1, LOSS OF REACTOR OR SECONDARY COOLANT/

when cold leg recirculation capability cannot be verified.

b ~ ES 1 ~ 3 g TRANSFER TO COLD LEG REC IRCULATION/

when recirculation cannot be established or maintained.

c ~ ECA 1 2 g I LOCA OUTS DE CONTAINMENTg when a LOCA outside containment cannot be isolated.

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EOP: TITLE:

REV 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 3 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF EMERGENCY COOLANT RECIRCULATION CAPABILITY IS RESTORED DURING THIS PROCEDURE, FURTHER RECOVERY ACTIONS SHOULD CONTINUE BY RETURNING TO PROCEDURE AND STEP IN EFFECT.

o IF SUCTION SOURCE IS LOST TO ANY SI OR CNMT SPRAY PUMP, THE PUMP SHOULD BE STOPPED.

• • • • • • • • • • • • • • • • • • • g *********************

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

1 Check If Emergency Recirculation Equipment Coolant Manually or at least one locally try to restore train (Refer to Available: Attachment RHR SYSTEM to identify minimum components for one train).

o RHR pumps - OPERABLE o RHR suction valves from sump B OPERABLE

~ MOV-850A

~ MOV-850B o RHR pump discharge to Rx vessel deluge valves - OPERABLE

~ MOV-852A

~ MOV-852B o CCW to RHR Hx - OPERABLE

~ MOV-738A

~ MOV-738B

e1 EOP:

REV! 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 4 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 Add Makeup To RWST As Necessary o Refer to S-9J, BLENDING TO RWST

-OR-o Refer to S-3.2D, TRANSFERRING WATER FROM CVCS HUT(S) TO RWST OR SFP

-OR-o Refer to Attachment SFP-RWST

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EOP: TITLE:

REV: 7 ECA-1.1 .LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 5 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Shutdown margin should be monitored during RCS cooldown (Refer to Figure SDM) ~

3 Initiate RCS Cooldown To Cold Shutdown:

a. Establish and maintain cooldown rate in RCS cold legs - LESS

'THAN 100'F/HR

b. Dump steam to condenser from b. Manually or locally dump steam intact S/G(s) from intact S/G(s):

o Use S/G ARVs

-OR-o Open TDAFW pump steam supply valves.

-OR-o Dispatch AO to perform the following:

1) Open S/G MSIV bypass valves.

2) Open 1A and 1B priming air ejector isolation valves.

~ V-3580

~ V-3581 IF no intact S/G available, THEN use faulted S/G.

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EOP: TlTLE REV: 7 ECA-F 1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 6 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Verify CNMT RECIRC Fans Running:

a. All fans - RUNNING a. Manually start fans.

b. Charcoal filter dampers green b. Dispatch personnel with relay status lights - EXTINGUISHED rack key to locally open dampers using trip relay pushbuttons in relay room racks.

~ AUX RELAY RACK RA-2 for fan A

~ AUX RELAY RACK RA-3 for fan C 5 Check RWST Level GREATER Go to Step 25.

THAN 15%

~ e EOP: TlTLE REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 7 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Determine CNMT Spray Requirements:

a. Determine number of CNMT spray pumps required from table:

CNMT CNMT RWST CNMT RECIRC FANS SPRAY PUMPS LEVEL PRESSURE RUNNING REQUIRED GREATER THAN 60 PSIG GREATER 0 OR 1 THAN BETWEEN 28% 28 PSIG AND 60 PSIG 2 OR 3 ALL LESS THAN 28 PSIG THAN 60 PSIG 28'REATER BETWEEN 15@ 0, 1, 2> OR 3 AND BETWEEN 28 PSIG AND 60 PSIG ALL LESS THAN 28 PSIG LESS THAN 15'.

CNMT spray pumps running - EQUAL b. Manually operate CNMT spray TO MINIMUM NUMBER REQUIRED pumps as necessary.

IF CNMT spray pump(s) must be stopped, THEN place switch in PULL STOP.

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EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 8 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G. MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

7 Reset SI If Necessary 8 Establish One Train Of SI Flow

a. SI pumps - LESS THAN THREE a. Stop one SI pumps RUNNING

b. RCS pressure - LESS THAN b. Stop RHR pumps and go to Step, 9.

250 psig [465 psig adverse CNMT]

c. RHR pump - ONLY ONE RUNNING c. IF two RHR pumps running, THEN stop one RHR pump.

IF no RHR pumps running, THEN start one RHR pump.

9 Verify No Backflow From RWST To Sump:

a. Any RHR suction valve from a. IF both RHR suction valves from sump B - OPEN sump B closed, THEN go to Step 10.

~ MOV-850A

~ MOV-850B

b. RWST outlet valve to RHR pump b. Manually close valve.

suction (MOV-856) - CLOSED IF valve can NOT be closed manually, THEN direct AO to locally close valve.

EOP:

REV 7 ECA-1 ' LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 9 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 10 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.

11 Verify Adequate SW Flow:

a. Check at least two SW pumps a. Manually start SW pumps as power RUNNING supply permits (258 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-1)

3) Go to Step 14.

b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)

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EOP: TITLE:

REV: 7 ECA-1. 1 , LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 10 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Establish IA to CNMT:

a. Verify non-safeguards busses a. Perform the following:

energized from offsite power

1) Close non-safeguards bus tie o Bus 13 normal feed - CLOSED breakers:

-OR- ~ Bus 13 to Bus 14 tie

~ Bus 15 to Bus 16 tie o Bus 15 normal feed - CLOSED

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

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

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

b. Verify SW isolation valves to b. Manually align valves.

turbine building - OPEN

~ MOV-4613 and MOV-4670

~ MOV-4614 and MOV-4664

c. Verify at least two air c. Manually start air compressors compressors - RUNNING as power supply permits (75 kw each). IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.

d. Check IA supply: d. Perform the following:

o Pressure - GREATER THAN 1) Continue attempts to restore 60 PSIG IA (Refer to AP-IA.l, LOSS OF INSTRUMENT AIR).

o Pressure - STABLE OR INCREASING 2) Continue with Step 14. WHEN IA restored, THEN do Steps 12e and f.

e. Reset both trains of XY relays for IA to CNMT AOV-5392

f. Verify IA to CNMT AOV-5392 - OPEN

w eke EOP:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 11 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Establish Required Charging Line Flow:

a. Charging pumps - ANY RUNNING a. Perform the following:

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP ¹1 seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally close seal injection needle valves to affected RCP:

~ RCP A, V-300A

~ RCP B, V-300B

2) Ensure HCV-142 demand at 0%.

3) Start one charging pumps

b. Establish 20 gpm total charging flow

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~ MWC

EOP: TITLE:

REV 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 12 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF SEAL COOLING HAD PREVIOUSLY BEEN LOST, THE AFFECTED RCP(S) SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

14 Check RCP Status:

a. RCS subcooling based on core a. Stop all RCPs and go to Step 15.

exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING b, RCPs - AT LEAST ONE RUNNING b. Try to start an RCP:

1) Establish conditions for starting an RCP o Bus llA or 11B energized o Refer to Attachment RCP START

2) Start one RCP.

c. Stop all but one RCP

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EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 13 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check If SI Can Be Terminated: Limit RCS injection flow to that required to remove decay heat:

a. RCS subcooling based on core exit T/Cs - GREATER THAN 50'F o Determine required injection USING FIGURE MIN SUBCOOLING flow using Figure MIN RCS INJECTION

b. Check RVLIS indication:

o Stop SI pumps as necessary to o Level (no RCPs) - GREATER establish and maintain minimum THAN 68% [73% adverse CNMT] required SI flow.

-OR- o IF required injection flow is less than 100 gpm, THEN o Fluid fraction (any RCP establish required charging flow running) - GREATER THAN 80% and go to Step 16.

IF required injection flow is greater than 100 gpm, THEN perform the following:

a. Ensure one SI pump running

b. Establish minimum charging flow for RCP seal injection.

c. Consult TSC to determine if SI pump discharge valves should be locally throttled.

(Locked valve key required.)

d. Go'o Step 18.

16 Stop SI And RHR Pumps And Place In Auto

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EOP: T!TLE:

REV: 7 ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULAT1ON PAGE 14 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Verify SI Pump Suction Aligned To RHST:

a. SI pump suction valves from a. Ensure at least one valve in BASTs - CLOSED each flow path closed.

~ MOV-826A ~ MOV-826A or MOV-826B

~ MOV-826B ~ MOV-826C or MOV-826D

~ MOV-826C

~ MOV-826D

b. SI pump suction valves from RWST b. Ensure at least one valve is OPEN open.

~ MOV-825A

~ MOV-825B

c. Consult TSC to determine if SI flush is required (Refer to Attachment SI FLUSH) 18 Verify Adequate RCS Makeup Flow:

a. Check RVLIS indication: a. Increase RCS injection flow to maintain RVLIS indication as o Level (no RCPs) - GREATER necessary.

THAN 68% [73% adverse CNMT]

-OR-o Fluid fraction (any RCP running) - GREATER THAN 80%

b. Core exit T/Cs - STABLE OR b. Increase RCS injection flow to DECREASING maintain core exit T/Cs stable or decreasing.

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EOP: TITLE:

REV 7 ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 15 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Depressurize RCS To Decrease RCS Subcooling:

a. Check RCS subcooling based on a. Go to Step 20.

core exit T/Cs - GREATER THAN 20'F USING FIGURE MIN SUBCOOLING

b. Use normal .PRZR spray b. IF normal spray NOT available, THEN use one PRZR PORV. IF IA NOT available, THEN refer to Attachment N2 PORVS.

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

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 87%

[75% adverse CNMT)

d. Stop RCS depressurization

EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 16 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 20 Check Can Be IfEstablished:

RHR Normal Cooling

a. RCS cold leg temperature - LESS a. Go to Step 21.

THAN 350'F b, RCS pressure - LESS THAN b. Go to Step 21.

400 psig [300 psig adverse CNMT]

c. Place letdown pressure controller in MANUAL CLOSED

d. Check following valves - OPEN d. Perform the following:

~ AOV-371, letdown isolation 1) Reset both trains of XY valve relays for AOV-371 and

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

~ At least one letdown orifice Open AOV-371 and AOV-427.

valve (AOV-200A, AOV-200B, or AOV-202) 3) Open one letdown orifice valve.

e. Verify pressure on PI-135 - LESS e. Go to Step 21.

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 normal cooling should be if RHR established using Attachment RHR COOL

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EOP: T11LE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 17 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 Check Isolated:

If SI ACCUMs Should Be

a. Both RCS hot leg temperatures a. Continue with Step 22. WHEN LESS THAN 400'F both RCS hot leg temperatures less than 400'F, THEN do Steps 21b, c and d.

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 c. Vent any unisolated ACCUMs:

~ MOV-841 1) Open vent valves for

~ MOV-865 unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865 22 Check If RCPs Must Be Stopped:

a. RCPs - ANY RUNNING a. Go to Step 23.

b. Check the following: b. Go to Step 23.

o RCP ¹1 seal D/P - LESS THAN 220 PSID

-OR-o Check RCP seal leakage - LESS THAN 0.25 GPM

c. Stop affected RCP(s)

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EOP: TITLE:

REVS 7 ECA-l.l LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 18 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Check Core Exit T/Cs- Go to Step 38.

GREATER THAN 200'F 24 Check RWST Level LESS THAN Return to Step 1 ~

154 25 Minimize RWST Outflow:

a. Any SI pump(s) - RUNNING a. IF charging pump suction aligned to RWST, THEN perform the following:

1) Verify SI pump suction aligned to RWST, MOV-825A or MOV-825B open.

2) Start one SI pump and verify flow.

3) Stop running charging pumps.

4) Go to Step 25e.

b. Stop all but one SI pump

c. Check charging pump suction from c. Go to Step 25e.

RWST (AOV-112B) - OPEN

d. Stop all charging pumps

e. Stop both CNMT spray pumps

f. Stop both RHR pumps 26 Check SI pump flow STABLE IF SI flow zero or erratic, THEN stop running SI pump.

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EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 19 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION BAST DILUTION MAY HAVE OCCURRED DURING SI PUMP SUCTION SWAPOVER FROM BASTS TO RWST. IF DILUTION IS SUSPECTED, BASTS SHOULD BE SAMPLED.

27 Try To Add Makeup To RCS From VCT:

a. Check VCT level - GREATER THAN 5% a. Stop charging pumps taking suction from VCT and continue with Step 28. WHEN VCT level greater than 5%, THEN do Steps 27b and c.

b. Verify charging pumps aligned to b. Manually align valves as VCT necessary.

o LCV-112C - OPEN o LCV-112B - CLOSED

c. Start charging pumps as necessary to establish two pumps running

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EOP: TITLE:

REV: 7 ECA-1.1 ,LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 20 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 28 Establish Maximum VCT Makeup:

a. Check RMW control armed - RED a. Place RMW mode switch in AUTO LIGHT LIT and place RMW control switch to START.

b. Check VCT level - LESS THAN 20% b. Continue with Step 29. WHEN VCT level less than 20%, THEN do Steps 28c, d and e.

c. Check VCT makeup system- c. Perform the following:

OPERATING IN AUTO

1) Open makeup system valves.

~ AOV-110B

~ AOV-110C

~ AOV-ill

2) Start BA transfer pumps and RMW pumps.

3) Open boric acid flow control valve (AOV-110A).

d. Increase VCT makeup flow

1) Start both RMW pumps

2) Start both boric acid pumps

3) Adjust RMW controller (HC-111) in MANUAL to 80 gpm

4) Adjust boric acid flow controller (HC-110A) in MANUAL to 9 gpm

e. Adjust charging pump speed to stabilize VCT level

• 5' EOP:

REV: 7 ECA-1.1 LOSS OF EMERGENCY, COOLANT RECIRCULATION PAGE 21 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 29 Try To Add Makeup To RCS From Alternate Source:

a. Evaluate Use Of RCDT Pumps (Refer to ER-RHR.1, RCDT PUMP OPERATION FOR CORE COOLING)

b. Consult TSC to determine other means of makeup 30 Verify SI ACCUM Isolation IF valves were closed to prevent SI Valves OPEN ACCUM nitrogen injection, THEN go to Step 34.

~ MOV-841

~ MOV-865 IF NOT, THEN perform the following:

a. Dispatch AO to locally close breakers for SI ACCUM discharge valves

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

b. Open SI ACCUM discharge valves.

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EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 22 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 31 Depressurize All Intact S/Gs To 785 PSIG:

a. Check S/G pressures - GREATER a. Go to Step 32.

THAN 785 PSIG

b. Dump steam to condenser at b. Manually or locally dump steam maximum rate at maximum rate from intact S/G(s):

o Use S/G ARVs

-OR-o Open steam supply valves to TDAFW pump

-OR-o Dispatch AO to perform the following:

1) Open S/G MSIV bypass valves,

2) Open priming air ejector steam isolation valves

~ V-3580

~ V-3581

c. Check S/G pressures - LESS THAN c. Return to Step 31b.

785 PSIG

d. Stop S/G depressurization

EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 23 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: The intent of Step 32 is to depressurize S/Gs more slowly, but at a rate that will maintain required RVLIS level.

32 Depressurize Intact S/Gs To 200 PSIG Slowly To Inject SI ACCUMs:

a. Dump steam to condenser as a. Manually or locally dump steam necessary to maintain from intact S/G(s) to maintain appropriate RVLIS indication: appropriate RVLIS indication:

o Level (no RCPs) - BETWEEN 68% o Use S/G ARVs AND 73% [73% AND 76% adverse CNMT] -OR-

-OR- o Open steam supply valves to TDAFW pump o Fluid fraction (any RCP running) - BETWEEN 80% AND 90% -OR-o Dispatch AO to perform the following:

l) Open affected S/G MSIV bypass valve.

2) Open priming air ejector steam isolation valves

~ V-3580

~ V-3581

b. Check S/G pressures - LESS THAN b. Return to Step 32a.

200 PSIG cd Stop S/G depressurization

EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 24 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 33 Check Isolated:

If SI ACCUMs Should Be

a. Both RCS hot leg temperatures a. Continue with Step 34. WHEN LESS THAN 400'F both RCS hot leg temperatures less than 400'F, THEN do Steps 33b, c and d.

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 I

c. Close SI ACCUM discharge valves c. Vent any unisolated ACCUMs:

~ MOV-841 1) Open vent valves for

~ MOV-865 unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865 34 Check If RCPs Must Be Stopped:

a. RCPs - ANY RUNNING a. Go to Step 36.

b. Check the following: b. Go to Step 36 o RCP ¹1 seal D/P - LESS THAN 220 PSID

'OR-o Check RCP seal leakage - LESS THAN 0.25 GPM

c. Stop affected RCP(s)

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EOP: TITLE:

REV: 7 ECA-1.1 . LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 25 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 35 Check SI Pump Flow STABLE IF SI flow zero or erratic, THEN stop running SI pump.

36 Depressurize All Intact S/Gs.

To Atmospheric Pressure:

a. Maintain cooldown rate in RCS

'cold legs - LESS THAN 100'F/HR

b. Dump steam to condenser b. Manually or locally dump steam from intact S/G(s):

o Use S/G ARVs

-OR-o Open steam supply valves to TDAFW pump

-OR-o Dispatch AO to perform the following:

1)'pen S/G MSIV bypass valves.

2) Open priming air ejector steam isolation valves

~ V-3580

~ V-3581

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EOP: TITLE:

REV: 7 ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 26 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 37 Check Can Be IfEstablished:

RHR Normal Cooling

a. RCS cold leg temperature - LESS a. Return to Step 35.

THAN 350'F

b. RCS pressure - LESS THAN b. Return to Step 35.

400 psig [300 psig adverse CNMT]

c. Place letdown pressure controller in MANUAL CLOSED

d. Check following valves - OPEN d. Perform the following:

~ AOV-371, letdown isolation 1) Reset both trains of XY valve relays for AOV-371 and

~ AOV-427, loop B cold leg to AOV-427.

REGEN Hx

~ At least one letdown orifice 2) Open AOV-371 and AOV-427.

valve (AOV-200A, AOV-200B, or AOV-202) 3) Open one letdown orifice valve.

e. Verify pressure on PI-135 - LESS e. Return to Step 36.

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

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EOP: TITLE:

REV' ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 27 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 38 Maintain RCS Heat Removal:

a. Use RHR system if in service

b. Dump steam to condenser from b. Manually or locally dump steam intact S/Gs from intact S/G(s):

o Use S/G ARVs

-OR-o Open steam supply valves to TDAFW pump

-OR-o Dispatch AO to perform the following:

1) Open S/G MSIV bypass valves.

2) Open priming air ejector steam isolation valves

~ V-3580

~ V-3581 IF no intact S/G available and RHR system NOT in service, THEN use faulted S/G.

39 Consult TSC

-END-

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EOP: TITLE:

REV: '7 ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 1 of 1 ECA-1-1 APPENDIX LIST TITLE PAGES

1) FIGURE MIN SUBCOOLING

2) FIGURE SDM

3) FIGURE MIN RCS INJECTION

4) ATTACHMENT RHR COOL

5) ATTACHMENT SFP-EST I')

ATTACHMENT RCP START

7) ATTACHMENT SD-1

8) ATTACHMENT CNMT RECIRC FANS

9) ATTACHMENT RHR SYSTEM

10) ATTACHMENT N2 PORVS

11) ATTACHMENT SI FLUSH

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EOP: T1TLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC S PRESSURE (PSIG) 2500 2400 RCS PRESSURE 2300 INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 700 INADEQUATE SUBCOOLING 600 REGION DV ERSE CNM 500 400 300 200 NORMAL CNMT TEMPERATURE INCREMENTS 10'F 100 0

20 0 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)

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EOP: T1TLF.:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 1 of 1 FIGURE SDM BORON CONCENTRATION (PPH) 1800 BORON INCREMENTS 20 PPH 1600 1400 ADEQUATE SDM 1200 100 PPM CONSERVATISH INCLUDED 1000 800 600 400 BOR TE 200 BURNUP INCREMENTS 100 HWD/HTU 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 CYCLE 22 BURNUP (HWD/HTU)

NOTE: To obtain core burnup, use PPCS turn on code BURNUP.

I EOP: TITLE:

REV: 7 ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION PAGE 1 of 1 FIGURE MIN RCS INJECTION RE(URI ED INJECTION FLOW RATE (G PH) 350 300 250 200 150 100 INADE(UATE INJECTION FLOW 50 10 100 1000 10000 TINE FROM REACTOR TRIP (MINUTES)

EOP TITLE: REV' UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 1 of 31 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE T SUPERINTEN EN q/

E ECT VE DATE CATEGORY 1.0 REVIEWED BY:

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EOP: TITLE:

REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-F 1 GENERATORS PAGE 2 of 31 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.

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EOP: TITLE:

REV 6 ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS of 31 PAGE 3 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

• • • • • • • • • • • • • 0' **************************

CAUTION o IP ANY S/G PRESSURE INCREASES AT ANY TIME DURING THIS PROCEDURE, THEN E-2, FAULTED STEAM GENERATOR ISOLATION, SHOULD BE PERPORMED.

o WHEN BAST LEVEL DECREASES TO 10%, THEN SI PUMP AUTOMATIC SWITCHOVER TO RWST SHOULD BE ENSURED.

o IP THE TDAFW PUMP IS THE ONLY AVAILABLE SOURCE OF FEED PLOW, 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 ~ R/hr.

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

o MSIVs - CLOSED , IP valves can NOT be closed, THEN dispatch AO to~ocally isolate o MFW flow control valves - CLOSED flowpaths, as necessary, one loop at a time.

~ MPW regulating valves

~ MPW 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 S/G ARVs - CLOSED o Dispatch AO to locally isolate S/Gs (Refer to Attachment FAULTED S/G)

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EOP: TITLE: REV *6 ECA-2.1 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS PAGE 4 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION A MINIMUM FEED PLOW OF 50 GPM MUST BE MAINTAINED TO EACH S/G VITH A NARROV RANGE LEVEL LESS THAN 5% [25% ADVERSE CNMT].

2 Control Feed Flow To Minimize RCS Cooldown:

a. Check cooldown rate in RCS cold a. Decrease feed flow to 50 gpm to legs - LESS THAN 100'P/HR each S/G and go to Step 2c.

b. Check narrow range level in both b. Control feed flow to maintain S/Gs - LESS THAN 50% narrow range level less than 50%

in both S/Gs.

c. Check RCS hot leg temperatures- c. Control feed flow or dump steam STABLE OR DECREASING to stabilize RCS hot leg temperatures.

3 Check Stopped:

If RCPs Should Be

a. RCP status - ANY RCP RUNNING a. Go to Step 4.

b. SI pumps - AT LEAST TWO RUNNING b. Go to Step 4.

c. RCS pressure minus maximum S/G c. Go to Step 4.

pressure - LESS THAN 175 psig

[400 psig adverse CNMT]

d. Stop both RCPs 4 Check CST Level GREATER Switch to alternate APW suction THAN 5 FEET supply (Refer to ER-AFV.1, ALTERNATE VATER SUPPLY TO AFW PUMPS).

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EOP: TITLE:

REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 5 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF ANY PRZR'ORV OPENS BECAUSE OF HIGH PRZR PRESSURE, IT SHOULD BE CLOSED AFTER PRESSURE DECREASES TO LESS THAN 2335 PSIG (REFER TO STEP 5B).

5 Check PRZR PORVs And Block Valves:

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

~ MOV-515, MCC C position 6C

~ MOV-516, MCC D position 6C

b. PORVs - CLOSED 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 C position 6C

~ MOV-516, MCC D position 6C

c. Block valves - AT LEAST ONE OPEN c. Open one block valve unless it was closed to isolate an open PORV.

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EOP: TITLE:

REV: 6 UNCONTROLLED DEPRESSURIZATION OF -BOTH STEAM ECA-2.1 GENERATORS PAGE 6 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Check Secondary Radiation Go to E-3, STEAM GENERATOR TUBE Levels NORMAL RUPTURE, Step l.

o Steamline radiation monitor (R-31 and R-32) o Dispatch AO to locally check steamline radiation o Request HP sample S/Gs for activity CAUTION o RCS PRESS SHOULD BE MONITORED. IR RCS PRESS DECREASES TO LESS THAN ~ ~

250 PSIG [465 PSIG ADVERSE CNMT], THE RHR PUMPS MUST BE MANUALLY RESTARTED TO SUPPLY WATER TO THE RCS.

o IR ORRSITE POVER IS LOST ARTER SI RESET, SELECTED SV PUMPS AND ONE CCW PUMP VILL AUTO START ON EMERGENCY D/G. MANUAL ACTION WILL BE REQUIRED TO RESTART SAREGUARDS EQUIPMENT.

7 Reset SI 8 Check Stopped:

If RHR Pumps Should Be

a. Check RCS Pressure:

1) Pressure - GREATER THAN 1) Go to E-l, LOSS OR REACTOR OR 250 psig [465 psig adverse SECONDARY COOLANT, Step 1.

CNMT]

2) Pressure - STABLE OR 2) Go to Step, 9.

INCREASING

b. Stop RHR pumps and place in AUTO

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EOP: TITLE:

REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 7 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Check Shopped:

If CNMT Spray Should Be

a. CNMT spray pumps - RUNNING a. Go to Step 10.

b. Verify CNMT pressure - LESS THAN b. Continue with Step 10. @HEN 4 PSIG CNMT pressure less than 4 psig, THEN do Steps 9c through f.

c. Reset CNMT spray

d. Check NaOH tank outlet valves- d. Place NaOH tank outlet valve CLOSED controllers to MANUAL and close valves.

~ AOV-836A

~ AOV-836B ~ AOV-836A

~ AOV-836B

e. Stop CNMT spray pumps and place in AUTO

f. Close CNMT spray pump discharge valves

~ MOV-860A

~ MOV-860B

~ MOV-860C

~ MOV-860D 10 Check RWST Level GREATER Go to ES-1.3, TRANSFER TO COLD LEG THAN 28~a RECIRCULATION, Step 1.

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EOP: TITLE:

REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 8 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ll Check Isolated:

If SI ACCUMs Should Be

a. Both RCS hot leg temperatures- a. Go to Step 12.

LESS THAN 400'P

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

~ MOV-841, MCC C position 12P

+. MOV-865, MCC D position 12C

c. Close SI ACCUM discharge valves c. Vent any unisolated ACCUMs:

~ MOV-841 1) Open vent valves for

~ MOV-865 unisolated SI ACCUMs,

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865 12 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.

~ I h EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 9 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Verify Adequate SW Flow:

a. Check at least two SW pumps- a. Manually start SW pumps as power RUNNING supply permits (258 kw each).

IP 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-1)

3) Go to Step 15.

b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)

EOP: TITLE:

REV: 6 UNCONTROLLED DEPRESSURIZATION ADF BOTH STEAM ECA-2.1 GENERATORS PAGE 10 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 Establish IA to CNMT:

a. Verify non-safeguards busses a. Perform the following:

energized from offsite power

1) Close non-safeguards bus tie o Bus 13 normal feed - CLOSED breakers:

-OR- ~ Bus 13 to Bus 14 tie

~ Bus 15 to Bus 16 tie o Bus 15 normal feed - CLOSED

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

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

3) VHRN bus 15 restored, THEN reset control room lighting.

b. Verify SV isolation valves to b. Manually align valves.

turbine building - OPEN

~ MOV-4613 and MOV-4670

~ MOV-4614 and MOV-4664

c. Verify at least two air c. Manually start air compressors

'ompressors - RUNNING as power supply permits (75 kw each). IP air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.

d.. Check IA supply: d. Perform the following:

o Pressure - GREATER THAN 1) Continue attempts to restore 60 PSIG IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).

o Pressure - STABLE OR INCREASING 2) Continue with Step 15. VHEN IA restored, THEN do Steps 14e and f.

e. Reset both trains of XY relays for IA to CNMT AOV-5392

f. Verify IA to CNMT AOV-5392 - OPEN

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 11 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check Normal Power Available Verify adequate emergency D/G To Charging Pumps: capacity to run charging pumps (75 kv each).

o Bus 14 normal feed breaker-CLOSED IP NOT, THEN evaluate if CNMT RECIRC fans can be stopped (Refer o Bus 16 normal feed breaker- to Attachment CNMT= RECIRC PANS).

CLOSED

pt EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 12 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 16 Check Been If Charging Established:

Flow Has

a. Charging pumps - ANY RUNNING a. Perform the following:

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

~ RCP A, V-300A

~ RCP B, V-300B .

2) Ensure HCV-142 open, demand at OX.

b. Align charging pump suction to b. IF LCV-112B can NOT be opened, RWST: THEN perform the following:

o LCV-112B - OPEN 1) Verify charging pump A NOT running and place in PULL o LCV-112C - CLOSED STOP.

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

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

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

3ji EOP TITLE:

REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 13 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check- If Terminated:

SI Should Be

a. Check RCS pressure: a. DO NOT stop SI pumps. Perform the following:

o Pressure - GREATER THAN 1625 psig [1825 psig adverse 1) Energize PRZR heaters and CNMT] operate PRZR spray as necessary to stabilize RCS o Pressure - STABLE OR pressure greater than INCREASING 1625 psig [1825 psig adverse CNMT]

2) Return to Step 2.

b. RCS subcooling based on core b. DO NOT stop SI pumps. Return to exit T/Cs - GREATER THAN O' Step 2.

USING FIGURE MIN SUBCOOLING

c. PRZR level - GREATER THAN 5% c. Do NOT stop SI pumps. Perform

[30% adverse CNMT] the following:

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

2) Return to Step 17a.

18 Stop SI and RHR Pumps And Place In Auto

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EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 14 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Verify SI Flow Not Required:

a. RCS subcooling based on core a. Manually operate SI pumps as exit T/Cs - GREATER THAN O' necessary and return to Step 2.

USING FIGURE MIN SUBCOOLING

b. PRZR level - GREATER THAN 5% b. Control charging flow to

[30% adverse CNMT] maintain PRZR level.

IF PRZR level can NOT be maintained, THEN manually operate SI pumps as necessary and return to Step 2.

CAUTION ALIGNING SI PUMP SUCTION TO RWST BEFORE ISOLATING BAST MAY RESULT IN BACKFLOW FROM RWST TO BASTS.

20 Verify SI Pump Suction Aligned To RWST:

a. SI pump suction valves from a. Manually close at least one BASTs - CLOSED valve in each flow path.

~ MOV-826A ~ MOV-826A or MOV-826B

~ MOV-826B ~ MOV-826C or MOV-826D

~ MOV-826C

~ MOV-826D IF either flowpath can NOT be manually isolated, THEN dispatch AO to isolate flowpath locally.

b. SI pump suction valves from b. Ensure at least one valve is RWST - OPEN open.

~ MOV-825A

~ MOV-825B

c. Consult TSC to determine if SI flush is required (Refer to Attachment SI FLUSH)

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EOP: Z!TLE: REV' UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 15 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 Check RCS Hot Leg Control feed flow or dump steam to Temperatures STABLE OR stabilize RCS hot leg temperatures.

DECREASING 22 Check Narrow Range Level In Control feed flow to maintain Both S/Gs LESS THAN 504 narrow range level less than 50X in both S/Gs.

23 Verify Adequate SW Flow To CCW Hx:

a. Verify at least two SW pumps- a. Manually start pumps as power RUNNING supply permits (258 kw per pump). IP less than two SW pumps can be operated, THEN go to Step 30.

b. Verify AUX BLDG SW isolation b. Establish SW to AUX BLDG (Refer valves - OPEN to Attachment AUX BLDG SW).

~ MOV-4615 and MOV-4734

~ MOV-4616 and MOV-4735

c. Verify CNMT RECIRC fan c. Dispatch AO to locally throttle

. annunciator C-2, HIGH flow to CCW Hx to between TEMPERATURE ALARM - EXTINGUISHED 5000 gpm and 6000 gpm total flow.

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-F 1 GENERATORS PAGE 16 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 24 Check If Normal CVCS Can Be Established Operation

a. Verify IA restored: a. Continue with Step 30. WHEN IA restored, THEN do Steps 24 o IA to CNMT (AOV-5392) - OPEN through 29.

o IA pressure - GREATER THAN 60 PSIG

b. Verify instrument bus D- b. Energize MCC B. IP MCC B NOT ENERGIZED available, THEN perform the following:

1) Verify MCC A energized.

2) Place instrument bus D on maintenance supply.

c. CCW pumps - ANY RUNNING c. Perform the following:

1) IP any RCP fl 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. Charging pump - ANY RUNNING d: Continue with Step 30. WHEN any charging pump running, THEN do Steps 25 through 29.

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 17 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 25 Check If Seal Return Flow Should Be Established:

a. Verify RCP IIIl seal outlet a. Go to Step 28.

temperature - LESS THAN 235'P

b. Verify RCP seal outlet valves- b. Manually open valves as OPEN necessary.

~ 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 d. Perform the following:

valve MOV-313

1) Place MOV-313 switch to OPEN.

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

e. Verify RCP tl seal leakoff flow e. IP any RCP seal leakoff flow greater than 5.5 gpm THEN:

LESS THAN 5.5 GPM

~ o Close the affected RCP seal discharge valve

~ RCP A, AOV-270A

~ RCP B, AOV-270B o Trip the affected RCP IP both RCP seal discharge valves are shut, THEN go to Step 27.

f. Verify RCP fl seal leakoff flow f. Refer to AP-RCP.l, RCP SEAL GREATER THAN 0.25 GPM MALPUNCTION.

26 Verify PRZR Level GREATER Continue with Step 28. WHEN PRZR THAN 13% [404 adverse CNMT] level increases to greater than 13%

[40% adverse CNMT], THEN do Step 27.

~)pA EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 18 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 Establish Normal Letdown: IF RCP seal return has been established, THEN establish excess

a. Verify charging line flow to letdown as follovs:

REGEN Hx - GREATER THAN 20 GPM o Place excess letdown divert

b. Place the following switches to valve, AOV-312, to NORMAL.

CLOSE:

o Ensure CCW from excess letdovn

~ Letdown orifice valves open, (AOV-745).

(AOV-200A, AOV-200B, and AOV-202) o Open excess letdovn isolation

~ AOV-371, letdown isolation valve AOV-310.

valve

~ AOV-427, loop B cold leg to o Slovly open HCV-123 to maintain REGEN Hx excess letdovn temperature less than 195'F and pressure less

c. Place letdovn controllers in than 100 psig.

MANUAL at 25% open o Adjust charging pump speed as

~ TCV-130 necessary.

~ PCV-135 IF RCP seal return NOT established,

d. Reset both trains of XY relays 'THEN consult TSC to determine if for AOV-371 and AOV-427 excess letdown should be placed in service.

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

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EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 19 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 28 Check VCT Makeup System:

a. BAST levels - ANY GREATER THAN 5X a. Go to Step 29.

b. Check Annunciator B-23, BORIC b. Perform the folloving:

ACID TANK LO LO LEVEL-EXTINGUISHED 1) Adjust boric acid flow control valve to required flow from table.

BAST BORIC ACID LEVEL PLOW (GPM)

<10% 4.5 10-15% 6.7 15-20% 8.9

>20% 10.0

2) Go to Step 28d.

c. Adjust boric acid flov control valve in AUTO to 4.5 gpm

d. Verify the folloving: d. Adjust controls as necessary.

1) RMW mode selector switch in AUTO

2) RMW control armed - RED LIGHT LIT

e. Check VCT level: e. Manually increase VCT makeup flow as follows:

o Level - GREATER THAN 20X

1) Ensure BA transfer pumps and

-OR- RMD pumps running. Tp NOT, TMMN reset MCC C and MCC D UV o Level - STABLE OR INCREASING lockouts as necessary.

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

3) Increase boric acid flow as necessary.

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EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 20 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 29 Check Charging Pump Suction Aligned To VCT:

a. VCT level - GREATER THAN 20% 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 30. WHEN VCT level greater than 40%,

THEN do Step 29b.

b. Verify charging pumps aligned to b. Manually align valves as VCT: necessary.

o LCV-112C - OPEN o LCV-112B - CLOSED 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 IF normal spray NOT available and Normal Spray As Necessary To letdown .is in service, THEN use Maintain RCS Pressure Stable 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.

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EOP: TlTLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 21 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

~

31 Check RCP Cooling: Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).

a. Check CCW to RCPs:

o Annunciator A-7, RCP lA CCW RETURN HIGH TEMP OR LOW PLOW EXTINGUISHED o Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW PLOW EXTINGUISHED

b. Check RCP seal injection:

o Labyrinth seal D/Ps - GREATER THAN 15 INCHES OP WATER

-OR-o RCP seal injection flov to each RCP - GREATER THAN 6 GPM

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 22 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 32 Verify All AC Busses . Perform the following:

ENERGIZED BY OFFSITE POWER

a. IF any AC emergency bus normal o Normal feed breakers to all 480 feed breaker open, THEN ensure volt busses - CLOSED associated D/G breaker closed.

o 480 bus voltage - GREATER THAN b. Perform the following, as 420 VOLTS .nec'essary:

o Emergency D/G output breakers- 1) Close non-safeguards bus tie OPEN breakers:

~ Bus 13 to Bus 14 tie

~ Bus 15 to Bus 16 tie

2) Place the follows.ng 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) %HEN bus 15 restored, THEN reset control room lighting.

5) 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.l, RESTORATION OF OFFSITE POVER).

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 23 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.

33 Check RCP Status AT LEAST Try to start one RCP:

ONE RUNNING

a. Establish conditions for starting an RCP.

o Bus llA or 11B energized o Refer to Attachment RCP START.

b. 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.

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-F 1 GENERATORS PAGE 24 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

34 Check If Source Detectors Should Range Be Energized:

a. Source range channels- a. Go to Step 34e.

DEENERGIZED

b. Check intermediate range flux- b. Perform the following:

EITHER CHANNEL LESS THAN 1O- o AMPS 1) IF neither intermediate range channel is decreasing THEN initiate boration.

2) Continue with Step 35. WHEN ~

flux is LESS THAN 10-'mps on any operable channel, THEN do Steps 34c, d and e.

c. Check the following: c. Continue with step 35. WHEN either condition met, THEN do o Both intermediate range Steps 34d and e.

channels - LESS THAN 10-'MPS

-OR-o Greater than 20 minutes since reactor trip

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

IF source ranges can NOT be restored, THEN refer to ER-NIS.l, SR MALFUNCTION and go to Step 35.

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

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EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2. 1 GENERATORS PAGE 25 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 35 Check If Emergency Should Be Stopped:

D/Gs

a. Verify AC emergency busses a. Try to restore offsite power energized by offsite power: (Refer to ER-ELEC.l, RESTORATION OF 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)

EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 26 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 36 Establish Normal Shutdown Alignment:

a. Check condenser - AVAILABLE a. Dispatch AO to perform Attachment SD-2.

b. Perform the following:

o Open generator disconnects

~ 1G13A71

~ 9X13A73 o Place voltage regulator to OPP 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) Check IA to CNMT - AVAILABLE 1) Go to Step 37.

2) Verify at least one control 2) Manually start one fan as rod shroud fan - RUNNING power supply permits (45 kw)

3) Verify one Rx compartment 3) Perform the following:

cooling fan - RUNNING 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-1 - COMPLETE

"Y I fJ II

EOP: TjTLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 27 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 37 Maintain Plant Conditions Control plant systems as necessary STABLE to maintain conditions stable.

o RCS pressure o PRZR level o RCS temperatures 38 Verify SI Flow Not Required:

a. RCS subcooling based on core a. Manually operate SI pumps as exit T/Cs - GREATER THAN O' necessary. Return to Step 2.

USING FIGURE MIN SUBCOOLING

b. PRZR level - GREATER THAN 5X b. Control charging flow to

[30X adverse CNMT] maintain PRZR level.

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

Return to Step 2.

EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2. 1 GENERATORS PAGE 28 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 39 Check Isolated:

If SI ACCUMs Should Be

a. Check the following: a. Go to Step 40.

o RCS subcooling based on core exit T/Cs - GREATER THAN O' 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

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

c. Close SI,ACCUM discharge valves c. Vent any unisolated ACCUMs:

~ MOV-841 1) Open vent valves for

~ MOV-865 unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865 40 Check RCS Hot Leg Control feed flow and dump steam to Temperatures LESS THAN 350'F establish RCS cooldown rate less than 100'F/hr in RCS cold legs.

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EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 29 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 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.

41 Check RCS Pressure LESS Use normal PRZR spray.

THAN 400 PSIG [300 PSIG adverse CNMT] 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.

Al EOP: TITLE: REV 6 UNCONTROLLED DEPEESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 30 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 42 Check Can Be IfEstablished:

RHR Normal Cooling

a. RCS cold leg temperature - LESS a. Return to Step 38.

THAN 350'F

b. RCS pressure - LESS THAN b. Return to Step 41.

400 psig '[300 psig adverse CNMT]

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

d. Check following valves - OPEN d. Perform the following:

~ AOV-371, letdown isolation 1) Reset both trains of XY valve relays for AOV-371 and

~ AOV-427, loop B cold leg to AOV-427.

REGEN Hx

~ At least one letdown orifice 2) Open AOV-371 and AOV-427.

valve (AOV-200A, AOV-200B, or AOV-202) 3) Open one letdown orifice valve.

e. Verify pressure on PI-135 - LESS e. Return to Step 41.

THAN 400 PSIG

f. Place RCS overpressure f. IF RCS overpressure protection protection system in service system can NOT be placed in (Refer to 0-7, ALIGNMENT AND service, THEN notify TSC of OPERATION OF THE REACTOR VESSEL potential Tech Spec violation if OVERPRESSURE PROTECTION SYSTEM) RHR system is placed in service.

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

0 EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 31 of 31 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 43 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 b. Control feed flow to maintain S/Gs - LESS THAN 50% narrow range level less than 50%

in both S/Gs.

44 Check Core Exit T/Cs LESS Return to Step 43.

THAN 200'F 45 Evaluate Long Term Plant Status:

a. Maintain cold shutdown conditions

b. Consult TSC

-END-

4 II eV rl

EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS PAGE 1 of 1 ECA-2. 1 APPENDIX LIST TITLE PAGES

1) RED PATH

SUMMARY

2) FIGURE MIN SUBCOOLING

3) ATTACHMENT FAULTED S/G

4) ATTACHMENT CNMT RECIRC FANS

5) ATTACHMENT NC

6) ATTACHMENT RCP START

7) ATTACHMENT N2 PORVS

8) ATTACHMENT SEAL COOLING 2 ~

9) ATTACHMENT SI/UV

10) ATTACHMENT D/G STOP

11) ATTACHMENT SD-1

12) ATTACHMENT SD-2

13) ATTACHMENT RHR COOL

14) ATTACHMENT AUX BLDG SW

15) ATTACHMENT SI FLUSH

16) FOLDOUT

EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 1 of 1 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 700'F AND RVLIS level (no RCPs) less than 434 [464 adverse CNMT]

c. HEAT SINK Narrow range level in all S/Gs less than 5%

[25~o adverse CNMT] AND total feedwater flow less than 200 gpm

d. INTEGRITY Cold leg temperatures decrease greater than 100'F in last 60 minutes AND RCS cold leg temperature less than 285'F

e. CONTAINMENT CNMT pressure greater than 60 psig

4 l>>,

J le kg C

SIC g

EOP: TITLE: REV: 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC S PRESSURE (PSIG) 2500 2400 RCS PRESSURE 2300 INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 INADEQUATE 700 SUBCOOLING 600 ADVERS REGION 500 400 300 200 NORMAL CNMT TEMPERATURE INCREMENTS 10'P 100 0

200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('P)

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EOP: TITLE: REV 6 UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM ECA-2.1 GENERATORS PAGE 1 of 1 FOLDOUT PAGE

1. SI REINITIATION CRITERIA Manually operate SI pumps as necessary listed below occurs:

if EITHER condition o RCS subcooling based on core exit TCs LESS THAN 0 F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING o PRZR level CHARGING CAN NOT CONTROL LEVEL GREATER THAN 5w

[30~o ADVERSE CNMT]

2. E-2 TRANSITION CRITERIA IF any S/G pressure increases at any time, THEN go to E-2, FAULTED STEAM GENERATOR ISOLATION, Step 1.

3. COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 284, THEN go to ES-1.3, 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. SI PUMP AUTO SWITCHOVER CRITERION WHEN BAST level decreases to 10%, THEN ensure SI pump automatic switchover to RWST.

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