ML17263A270

Rev 8 to EOP FR-C.1, Response to Inadequate Core Cooling.

ML17263A270
Person / Time
Site:	Ginna
Issue date:	04/21/1993
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A269	List: ML17263A268 ML17263A270 ML17263A271 ML17263A272 ML17263A273 ML17263A274 ML17263A275 ML17263A276
References
FR-C.1, NUDOCS 9305140047
Download: ML17263A270 (32)

Text

EOP;FR-C.1 TITLE: RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 1 of 15 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE 2'p Pv.CATEGORY 1'0 REVIEWED BY: t isosziooa7

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EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 2 of 15.A.PURPOSE-This procedure provides actions to restore core cooling.B.ENTRY CONDITIONS/SYMPTOMS 1.ENTRY CONDITIONS

-This procedure is entered from: a.F-0.2, CORE COOLING Critical Safety Function Status Tree, on a RED condition.

EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 3 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT values should be used whenever CNMT~ressure is greater than 4 psig or CNMT radiation is greater than 10+5 R/hr.1 Check RNST LeVel-GREATER THAN 284'erform the following:

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

b.WHEN the SI system is aligned for sump recirculation, THEN go to Step 4.

EOP FR-C.1 T1TLE0 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 4 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*********************************4'*******

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

2 Verify SI Pump And RHR Pump Emergency Alignment:

a.RHR pump discharge to Rx vessel deluge-OPEN~MOV-852A~MOV-852B b.Verify SI pump C-RUNNING c.Verify SI pump A-RUNNING d.Verify SI pump B-RUNNING<m r, (%pl WP e.Verify both SI pump C discharge valves-OPEN~MOV-871A~MOV-871B a.Ensure at'east one valve open.b, Manually start pump on available bus.c, Perform the following.

1)Ensure SI pumps B and C running.2)Ensure SI pump C aligned to discharge line A: o MOV-871B closed o MOV-871A open 3)Go to Step 3.d.Perform the following:, 1)Ensure SI pumps A and C running.2)Ensure SI pump C aligned to discharge line B: o MOV-871B open o MOV-871A closed 3)Go to Step 3.e~Manually open valves as necessary.

EOP I FR-C.1 TITLE: RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 5 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Verify SI Pump Suction Alignment:

a.Check BAST level: o Level-GREATER RQQl 10$o Annunciator B-23, BORIC ACID TANK LO LO LEVEL-EXTINGUISHED a.Perform the following:

1)Ensure at least one SI pump suction valve from RWST open.~MOV-825A~MOV-825B 2)Ensure at least one valve in each SI pump suction line from BAST closed.~MOV-826A or MOV-826B~MOV-826C or MOV-826D b.Verify SI pump suction valves from BAST-OPEN~MOV-826A~MOV-826B~MOV-826C~MOV-826D 3)Go to Step 4.b.Ensure both valves in either flow path open.o MOV-826A and MOV-826B-OR-o MOV-826C and MOV-826D c.Verify SI pump suction from RWST CLOSED~MOV-825A~MOV=825B c.Manually align valves as necessary.

EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 6 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Verify SI Flow In Both Trains: o SI line loop A and B flow indicators

-CHECK FOR FLOW o RHR loop flow indicator-CHECK FOR FLOW Perform the following:

a.Manually start pumps and align valves as necessary.

b.Establish maximum charging flow.5 Check RCP Support Conditions:

a.Verify Bus 11A or 11B-ENERGIZED b.Check other RCP support conditions (Refer to Attachment RCP START)Continue attempts to establish RCP support conditions.

6 Check SI ACCUM Discharge Valves-OPEN~MOV-841~MOV-865 IF SI ACCUM discharge valves closed after ACCUM discharge, THEN go to Step 7.IF NOT, THEN perfone the following:

a.Dispatch AO'with locked valve key to locally close breakers for SI ACCUM discharge valves.~MOV-841, MCC C position 12F~MOV-865, MCC D position 12C b.Open SI ACCUM discharge valves.'efrw'g~ACCUM A, MOV-841~ACCUM B, MOV-865

KOP FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 7 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check Core Exit T/Cs-LESS THAN 1200'F Go to Step 10.8 Check RVLIS Indication:

a.RVLIS level (no RCPs)-GREATER THAN 438 t46%adverse CNMT)a.IF RVLIS increasing, THEN return to Step 1.IF NOT, THEN go to Step 9.b.Return to procedure and step in effect 9 Check Core Exit T/Cs: a.Temperature

-LESS THAN 700'F b.Return to procedure and step in effect a.IF decreasing, THEN return to Step 1.IF NOT, THEN go to Step 10.******%***************,*******************CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SV PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.MANUAL ACTION VILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

10 Reset SZ~e 0

EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 8 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Reset CI: a.Depress CI reset pushbutton b.Verify annunciator A-26, CNMT ISOLATION-EXTINGUISHED b.Perform the following:

1)Reset SI.NOTE: 2)Depress DI reset pushbutteu.

This procedure should be continued while obtaining CNMT hydrogen sample in Step 12.12 Check CNMT Hydrogen Concentration:

a.Direct HP to start CNMT hydrogen monitors as necessary b.Hydrogen concentration

-LESS THAN 0.5%b.Consult TSC to determine if hydrogen recombiners should be placed in service.

EOP FR-C.1 TITLE: RESPONSE TO INADEQUATE CORE COOLING REV'PAGE 9 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION o IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).o A FAULTED OR RUPTURED S/G SHOULD NOT BE USED IN SUBSEQUENT STEPS UNLESS NO INTACT S/G IS AVAILABLE.

NOTE: TDAFP pump flow control valves fail open on loss of IA.*13 Monitor Intact S/G Levels: a.'arrow 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 total feed flow greater than 200 gpm can NOT be established, THEN perform the following:

1)Continue attempts to establish a heat sink in at least one S/G (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).b, Control feed flow to maintain narrow range level between 17%[25%'-adverse CNMT]and 50%2)Go to Step 23.

I EOP: FR-C.1 TITLE: RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 10 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************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 14B).14 Check RCS Vent Paths: a.Power to PRZR PORV block valves-AVAILABLE b.PORVs-CLOSED a.Restore power to'lock valves unless block valve was closed to isolate an open PORV:~MOV-515, MCC C position 6C~MOV-516, MCC D position 6C b.IF PRZR pressure less than 2335 psig, THEN manually close PORVs.IF any PORV can NOT be closed, THEN manually close its block valve.c.Block valves-AT LEAST ONE OPEN c.Open one block valve unless it was closed to isolate an open PORV.d.Rx vessel head vent valves CLOSED'd.Manually close valves.~SOV-590~SOV=591~SOV 592~SOV<<"593~r

EOP: FR-C.1 TITLE 0 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 11 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Establish Condenser Steam Dump Pressure Control: a.Verify condenser available:

o Intact S/G MSIV-OPEN o Annunciator G-15, STEAM DUMP ARMED-LIT a.Place intact S/G ARV controller in MANUAL and go to Step 16.b.Place steam dump mode selector switch in MANUAL c.Place steam dump controller in MANUAL NOTE: Partial'ncovering of S/G tubes is acceptable in the following steps.16 Depressurize All Intact S/Gs To 200 PSIG: a.Dump steam to condenser at maximum rate b.Check S/G pressure-LESS THAN 200 PSIG a.Manually or locally dump steam at maximum rate using S/G ARVs.b.IF S/G pressure decreasing, THEN return to Step 13.IF NOT, THEN go to Step 23.c.Check RCS hot leg temperatures-BOTH LESS THAN 400'F P Wa vk d.Stop-S/G depressurization c.IF RCS hot leg temperatures

.decreasing, THEN return to Step 13.IF NOT, THEN go to Step 23.

EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 12 of 1S STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check If SI ACCUMs Should Be Isolated: a.RCS hot leg temperatures

-BOTH LESS THAN 400'F a.Go to Step 23.b.Verify SI reset c.Close SI ACCUM discharge valves~ACCUM A, MOV-841~ACCUM B, MOV-865 b.Manually reset SI.c.Vent any unisolated ACCUMs: 1)Open vent valves for unisolated SI ACCUMs.~ACCUM A, AOV-834A~ACCUM B, AOV-834B d.Locally reopen breakers for MOV-841 and MOV-865 2)Open HCV-945.18 Stop Both RCPs 19 Dump Steam to Condenser At Maximum Rate To Depressurize All Intact S/Gs To Atmospheric Pressure Manually or locally dump steam at maximum rate using S/G ARVs.20 Verify SI Flow: o SI liztb loop A and B flow indicators

-CHECK FOR FLOW Perform the following:

a.Continue efforts to establish SI flow.-OR-o RHR loop flow indicator-CHECK FOR FLOW b.Try to establish charging flow.c.IF core exit T/Cs less than 1200'F, THEN return to Step 19.IF NOT, THEN go to Step 23.

EOP: FR-C.1 T1TLE: RESPONSE TO INADEQUATE CORE COOLING REV'PAGE 13 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 Check Core Cooling: a.Core exit T/Cs-LESS THAN 1200'F b.RCS hot leg temperatures

-BOTH LESS THAN 320'F a.Go to Step 23.b.Return to Step 19.c.RVLIS level (no RCPs)-GREATER THAN 68%[73%adverse CNMT]c.Return to Step 19.22 Go to Appropriate Plant Procedure a.Check RWST level-GREATER THAN 28'.Go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step 17 a.Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.NOTE: Normal conditions are desired but not required for starting the RCPs.23 Check Core Exit T/Cs-LESS THAN 1200'F Start RCPs as necessary until core exit T/Cs less than 1200'F.IF core exit T/Cs greater than 1200'F and all available RCPs running, THEN open all PRZR PORVs and block valves.IF IA NOT available, THEN refer to Attachment

.N2 PORVS.IF core exit T/Cs greater than 1200'F and all PRZR PORVs and block valves open, THEN open Rx vessel head vent valves.~SOV-590~SOV-591~SOV-592~SOV-593 4 I EOP: FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 14 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 24 Try To Locally Depressurize All Intact S/Gs To Atmospheric Pressure: o Use intact S/G(s)ARVs-OR-Use faulted or ruptured S/G.o Open TDAFW pump steam supply valve from intact S/G(s)~S/G A, MOV-3505A~S/G B, MOV-3504A-OR-o Perform the following:

a, Open intact S/G MSIV bypass valves b.Open both priming air ejector steam inlet valves~V-.3580~V-3581 25 Check If SI ACCUMs Should Be Isolated: a.RHR loop flow indicator-AT LEAST INTERMITTENT FLOW a.Return.to Step 23.b.Close: SI ACCUM discharge valves~ACCUM A, MOV-841~ACCUM B, MOV-&65 b.Vent any unisolated ACCUMs: 1)Open vent valves for unisolated SI ACCUMs.c.Locally reopen breakers for MOV-841 and MOV-865~ACCUM A, AOV-834A~ACCUM B, AOV-834B 2)Open HCV-945.

EOP: FR-C.1 TLTLE: RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 15 of 15 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 26 Check If RCPs Should Be Stopped: a.Both RCS hot leg temperatures-LESS THAN 320'F a.Go to Step 27.b.Stop all RCPs 27 Verify SI Flow: o SI line loop A and B flow indicators

-CHECK FOR FLOW Perform the following:

a.Continue efforts to establish SI flow.-OR-o RHR loop flow indicator-CHECK FOR FLOW b.Try to establish charging flow.c.Return to Step 23.28 Check Core Cooling: o RVLIS indication

-GREATER THAN 68$f73%adverse CNMT)o RCS hot leg temperatures

-LESS THAN 320'F Return to Step 23.29 Go to Appropriate Plant Procedure a.Check RWST level-GREATER THAN 28'.Go to,.;E;-1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 17 I a.Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.-END-

FR-C.1 RESPONSE TO INADEQUATE CORE COOLING REV: 8 PAGE 1 of 1 FR-C.1 APPENDIX LIST TITLE 1)ATTACHMENT RCP START 2)ATTACHMENT N2 PORVS PAGES