ML17264A822

Rev 15 to FR-P.1, Response to Imminent Pressurized Thermal Shock Condition.

ML17264A822
Person / Time
Site:	Ginna
Issue date:	02/06/1997
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A821	List: ML17264A820 ML17264A822 ML17311A041
References
FR-P.1, NUDOCS 9702190176
Download: ML17264A822 (36)

Text

%OP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 1 of 21 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSI MANAGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY: 97Oaaeos7e 9roeoi f PDR AOOCK 05005244)F PDR e EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 2 of 21 A.PURPOSE-This procedure provides actions to avoid, or limit, thermal shock or pressurized thermal shock to the reactor pressure vessel, or overpressure conditions at low temperature.

B.ENTRY CONDITIONS/SYMPTOMS 1.ENTRY CONDITIONS

-This procedure is entered from: a.F-0.4, INTEGRITY Critical Safety Function Status Tree, on either a RED or ORANGE condition.

EOP: FR-P.1 T I Tt.E: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 3 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT values should be used whenever CNMT~ressure is greater than 4 psig or CNMT radiation is greater than 10+R/hr.1 Check RCS Pressure-GREATER THAN 250 PSIG t'465 PSIG adverse CNMT]IF RHR flow greater than 475 gpm, THEN return to procedure and step in effect.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 15 PAGE 4.of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: A faulted S/G is any S/G that is depressurizing in an uncontrolled manner or is completely depressurized.

2 Check RCS ColC Leg Temperatures

-STABLE OR INCREASING Try to stop RCS cooldown: I'.Ensure S/G ARVs closed.b.Close both S/G MSIVs.c.Ensure MFW flow control valves closed.~MFW regulating valves~MFW bypass valves d.Ensure MFW pumps tripped.e.Rotate reheater steam supply controller cam to close reheater steam supply valves.f.IF S/G pressure less than condensate pressure, THEN stop all condensate pumps.g.IF RHR system in service, THEN stop any cooldown from RHR system.h.Control total feed flow to non-faulted S/G(s)greater than 200 gpm until narrow range level greater than 5%[258 adverse CNMT]in at least one non-faulted S/G.WHEN S/G level greater than 5%[25%adverse CNMT]in one non-faulted S/G, THEN limit feed flow to stop RCS cooldown.This Step continued on the next page.

cOP: FR-P.1 T1TLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 5 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED (Step 2 continued from previous page)" i.Minimize cooldown from faulted S/G(s): 1)Close faulted S/G(s)TDAFW pump steam supply valve(s).~S/G A, MOV-3505A~S/G B, MOV-3504A 2)IF both S/G(s)faulted, THEN control feed flow at 50 gpm to each S/G.3)IF any S/G NOT faulted, THEN'isolate all feedwater to faulted S/G unless necessary for RCS temperature.control.IF a faulted S/G is necessary for RCS temperature control, THEN control feed flow at 50 gpm to that S/G.3 Check PRZR PORV Block Valves: a.Power to PORV block valves AVAILABLE b.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.Open one biock valve unless it was closed to isolate an open PORV.IF at least one 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

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 15 PAGE 6 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR PRESSURE, THEN STEP 4 SHOULD BE PERFORMED AFTER PRESSURE DECREASES TO LESS THAN THE APPLICABLE PORV SETPOINT.4 Check PRZR PORV Status: a.Check Reactor Vessel Overpressure Protection System-IN SERVICE a.Go to Step 4d.b.Check RCS pressure-LESS THAN 410 PSIG b.Perform the following:

1)Ensure at least one PRZR PORV open.2)Continue with Step 5.WHEN pressure less than setpoint, THEN do Step 4e~c.Go to Step 4e d.PRZR pressure-LESS THAN 2335 PSIG e'Verify PRZR PORVs-CLOSED d.Perform the following:

1)Ensure at least one PRZR PORV open.2)Continue with Step 5.WHEN pressure less than setpoint, THEN do Step 4e.e.Manually close valve.IF any valve can NOT be closed, THEN manually close its block valve.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 7 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check SZ Pumps-ANY RUNNING Go to Step 13.6 Check Zf SZ Can Be Terminated:

o RCS subcooling based on core exit T/Cs-GREATER THAN 50'F USING FIGURE MIN SUBCOOLING o Check RVLIS indication:

o Level (no RCPs)-GREATER THAN 68%[73%adverse CNMT)-OR-o Fluid fraction (any RCP running)-GREATER THAN 80%Do NOT stop SI pumps.Perform the following:

a.IF RCS subcooling based on core exit T/Cs greater than O'F using'igure MIN SUBCOOLING and no RCP running, THEN attempt to start an RCP: 1)Establish conditions for starting an RCP: o Bus llA or 11B.energized o Refer to Attachment RCP START 2)IF conditions established, THEN start one RCP.b.Go to Step 26".CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, THEN 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 SZ FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 15 PAGE 8 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Stop SI And RHR Pumps And ,Place In AUTO 9 Reset CI: a.Depress CI reset pushbutton b.Verify annunciator A-26, CNMT ISOLATION-EXTINGUISHED b.Perform the following:

1)Reset SI.h 2)Depress CI reset pushbutton.

10 Verify Adequate SW Flow: a.Check at least two SW pumps RUNNING b.Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)a.Manually start SW-pumps as power 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 12.WHEN adequate SW available, THEN do Step 11.

~e 0 EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 9 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Estahli.sh 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~MOV-4614 and MOV-4664 c.Verify at least two air compressors

-RUNNING d.Check IA supply: o Pressure-GREATER THAN 60 PSIG o Pressure--STABLE OR INCREASING e.Reset both trains of XY relays for IA to CNMT AOV-5392 f.Verify IA to CNMT AOV-5392-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 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 12.WHEN IA restored, THEN do Steps lie and f.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 10 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 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 RCP¹1 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 Oa.b.Align charging pump suction to RWST: o LCV-112B-OPEN o LCV-112C-CLOSED b.IF LCV-112B can NOT be opened, THEN perform the following:

1)Verify charging pump A NOT running and place in PULL STOP.c.Start charging pumps as necessary to establish charging line flow to REGEN HX-GREATER THAN 20 GPM 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).

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 11 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*13 Monitor SI Reinitiation Criteria: o-RCS subcooling based on core exit T/Cs-GREATER THAN FIGURE MIN SUBCOOLING o RVLIS indication:

Manually operate SI pumps as necessary and perform the following'.IF RCS subcooling based on core exit T/Cs greater than Figure MIN SUBCOOLING and no RCP running, THEN attempt to start a RCP: o Level-GREATER THAN 68%[73%adverse CNMT]-OR-o Fluid fraction (any RCP running)-GREATER THAN 80%1)Establish conditions for starting an RCP: o Bus 11A or 11B energized o Refer to Attachment RCP START 2)IF conditions established, THEN start one RCP.b.Go to Step 26.14 Check RCS Hot Leg Temperatures

-STABLE IF increasing, THEN control feed flow and dump steam to stabilize RCS hot leg temperatures., IF decreasing, THEN verify that actions of Step 2 have been performed before continuing with procedure.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 12 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check If SI ACCUMs Should Be Isolated: a.Check the following:

o RCS subcooling based on core exit T/Cs-GREATER THAN O'USING FIGURE MIN SUBCOOLING a.Return to Step 13.o RVLIS indication:

o Level-GREATER THAN 68%[73%adverse CNMT]-OR-o Fluid fraction (any RCP running)-GREATER THAN 80%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 ACCUH discharge valves~MOV-841~MOV-865 c.Vent any unisolated ACCUMs': 1)Open vent valves for unisolated SI ACCUMs.d.Locally reopen breakers for MOV-841 and MOV-865~ACCUM A, AOV-834A~ACCUM B, AOV-834B 2)Open HCV-945.3)'Continue with Step 16.Do NOT decrease RCS pressure to less than unisolated ACCUM pressure.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 13 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION THE RCS SHOULD NOT BE DEPRESSURIZED TO LESS THAN SI ACCUM PRESSURE UNTIL SI ACCUMS ISOLATED.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 a PRZR PORV select one with an operable block valve.16 Depressurize RCS To Decrease RCS Subcooling:

a.Depressurize using normal PRZR spray if available a.IF normal spray NOT available, THEN use one PRZR PORV.IF IA NOT available, THEN refer to Attachment N2 PORVS.b.Depressurize RCS until one of the following conditions satisfied:

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

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]-OR-o RCS pressure-LESS THAN 160 psig[200 psig adverse CNMT]c.Stop RCS depressurization tOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 14 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*17 Monitor RCP Operation:

a.RCPs-ANY RUNNING b..Check the following:

o RCP¹1 seal D/P-GREATER THAN 220 PSID a.Go to Step 18.b.Stop affected RCP(s).o RCP¹1 seal leakoff-WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF CAUTION AN INCREASE IN RCS PRESSURE MAY RESULT IN EXCESSIVE REACTOR VESSEL STRESS.RCS PRESSURE AND TEMPERATURE SHOULD BE MAINTAINED STABLE WHILE PERFORMING SUBSEQUENT STEPS IN THIS PROCEDURE.

18 Check PRZR Level-GREATER THAN 134[404 adverse CNMT]Try to restore level with charging while maintaining stable RCS pressure.IF level can NOT be restored, THEN go to Step 25.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV'5 PAGE 15 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Check If Normal CVCS, Operation Can Be Established a.Verify IA restored: o IA to CNMT (AOV-5392)

-OPEN o IA pressure-GREATER THAN 60 PSIG a.Continue with Step 23.WHEN IA restored, THEN do,Steps 19 through 22.b.CCW pumps-ANY RUNNING b.Perform the following:

c.Verify instrument bus D-ENERGIZED d.Charging pump-ANY RUNNING 1)IF any RCP¹1 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.c.Energize MCC B.IF MCC B NOT available, THEN perform the following:

1)Verify MCC A energized.

2)Place instrument bus D on maintenance supply.d.Continue with Step 24.WHEN any charging pump running, THEN do Steps 20 through 24.

I l FR-P.1 TITLE: RESPONSE TO ZMMZNENT PRESSURZZED THERMAL SHOCK CONDZTZON REV: 15 PAGE 16 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF RCS PRESSURE LESS THAN 250 PSIG, THEN PCV-135 SHOULD BE ADJUSTED TO ESTABLISH DESIRED LETDOWN FLOW, NOT TO INCREASE PRESSURE.20 Establish Normal Letdown: a.Establish 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~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.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 17 of 21.STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 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 c.'djust controls as necessary.-

2)RMW control armed-RED LIGHT LIT d.Check VCT level: o Level-GREATER THAN 20%-OR-o Level-STABLE OR INCREASING 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-ill in MANUAL and increase RMW flow.~3)Increase boric acid flow as necessary.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 18 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 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 23.WHEN VCT level greater than 40%, THEN do Step 22b.b.Verify charging pumps aligned to VCT o LCV-112C-OPEN o LCV-112B-CLOSED b.Manually align valves as necessary.

23 Check PRZR Level-LESS THAN 87%[754 adverse CNMT]Control charging and letdown as necessary to reduce PRZR level to less than 87$[75%adverse CNMT].If necessary establish excess letdown.IF no letdown available AND CCW to RCPs established, THEN cycle charging pumps as necessary to control PRZR level.

EOP: FR-P.1 jITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 19 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: For optimum long term pressure control, saturated conditions should be restored in the PRZR.24 Verify PRZR Liquid Temperature (TZ-424)-AT SATURATION FOR DESIRED PRESSURE IF PRZR liquid temperature low, THEN energize PRZR heaters as necessary to establish desired temperature.

25 Check RCS Subcooling Based On Core Exit T/Cs-LESS THAN 10'F USING FIGURE MZN SUBCOOLING IF RCS pressure less than 160 psig[200 psig adverse CNMT], THEN go to Step 26.IF NOT, THEN depressurize using normal spray.Return to'step 16b.IF normal spray NOT available and letdown is in service, THEN use auxiliary spray for any further depressurization.

Return to Step 16b.IF auxiliary spray NOT available, THEN return to Step 16a.26 Check Cool Down Rate In RCS Cold Legs-GREATER THAN 100'F IN ANY 60 MINUTES PERIOD Return to procedure and step in effect.27 Maintain RCS Pressure And Temperature Stable For At Least 1 Hour a.Control steam dump and feed flow as necessary b.Perform actions of other procedures in effect which do not cool down the RCS or increase RCS pressure until the RCS temperature soak has been completed

~4 1 EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 15 PAGE 20 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: The following pressure, temperature and cooldown rate limits remain applicable in subsequent procedures.

28 WHEN 1 HOUR Soak Is Complete, THEN Continue RCS Cooldown And Depressurization As Necessary a.Maintain RCS pressure and cold leg temperature within the limits of Figure SOAK LIMITS b.Establish and maintain cooldown rate in RCS cold legs-LESS THAN 50'F IN ANY 60 MINUTES PERIOD 29 Verify SZ Floe Not Required: o RCS subcooling based on core exit T/Cs-GREATER THAN FIGURE MIN SUBCOOLING o RVLIS indication:

o Level-GREATER THAN 68%[73%adverse CNMT]-OR-o Fluid fraction (any RCP running)-GREATER THAN 80%Manually operate SI pumps as necessary.

IF RCS subcooling based on core exit T/Cs greater than Figure MIN SUBCOOLING and no RCP running, THEN perform the following:

a.Establish conditions for starting an RCP: o Bus 11A or 11B energized o Refer to Attachment RCP START b.IF conditions established, THEN start one RCP.

EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 21 of 21 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Return To Procedure And Step In Effect-END-4 0~g

~I~EOP: FR-P.1 TITLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 1 of 1 FR-P.1 APPENDIX LIST TITLE PAGES 1)FIGURE MIN SUBCOOLING 2)FIGURE SOAK LIMITS 3)FIGURE RCP SEAL LEAKOFF 4)ATTACHMENT RCP START 5)ATTACHMENT SD-1 6)ATTACHMENT CNMT RECIRC FANS 7)ATTACHMENT N2 PORVS

~~4~~

EOP: FR-P.1 T1TLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV: 15 PAGE 1 of 1 FIGURE MIN SUBCOOLING.NOTE: Subcooling Margin=Saturation Temperature From Figure Below I-]Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 S PRESSURE (PSIG)RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADV ERS NHT NORMAL CNHT INADEQUATE'U BCOOL ING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE

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<o FR-P.1 TlTLE: 'I RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV'5-PAGE 1 of 1 RCS 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 PRESSURE (PSIG)RCS PRESSURE INCREHENTS 20 PSIG FIGURE SOAK LIMITS REHAIN BELOW CURVE TEHPERATURE INCREHENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 RCS COLO LEG TEMPERATURE

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EOP: FR-P.1 T!TLE: RESPONSE TO IMMINENT PRESSURIZED THERMAL SHOCK CONDITION REV 15 PAGE 1 of 1 FIGURE RCP SEAL LEAKOFF¹1 SEAL LEAK RATE (GPM)6 LEAK RATE INCREMENTS 0.2 GPM NORMAL OPERATING RANGE DP INCREMENTS 50 PSI 250 500 750 1000 1250 1500 1750 2000 2250 2500¹1 SEAL DP (RCS PRESS-VCT PRESS)PSI lt'4;a~c~r-.P C E Il