ML17262A883

Rev 6 to EOP ECA-0.1, Loss of All Ac Power Recovery W/O SI Required.

ML17262A883
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, ECA-0.1, NUDOCS 9206160382
Download: ML17262A883 (46)

Text

EOP: TITLE:

SI REV: 6 LOSS OF ALL AC POWER RECOVERY WITHOUT ECA-0.1 REQUIRED PAGE 1 of 20 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE r

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PLANT SUPERINTENDENT EF ECT VE DATE CATEGORY "1.0 REVIEWED BY:

920bfb0382 920bps 0500024 PDR *DOCK @DR I P

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EOP: TITLE:

SI REV: 6 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT REQUIRED of 20 PAGE 2 A. PURPOSE - This procedure provides actions to use normal operational systems to stabilize plant conditions following restoration of AC emergency power-B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This Procedure is entered from:

a. ECA-O.O, LOSS OF ALL AC POWER, when AC emergency power is restored and SI is not required.

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REV 6 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 3 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: o CSFSTs should be monitored for information only. FR procedures should not be implemented prior to completion of Step 11.

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 RCP Seal Isolation Status:

a. RCP seal injection needle valves a. Dispatch AO with key to RWST CLOSED gate to locally close valves before starting charging pump.

~ V-300A

~ V-300B

b. RCP CCW return valves - CLOSED b. IF valves open or position not known, THEN check CCW pump

~ MOV-759A status:

~ MOV-759B

1) IF pump running, THEN go to Step 2.

2) IF pump NOT running, THEN manually close valves.

IF valve(s) can NOT be closed, THEN place switches for RCP thermal barrier CCW outlet valves to CLOSE.

~ AOV-754A

~ AOV-754B 2 Check CI Annunciator A-26, Perform the following:

CONTAINMENT ISOLATION EXTINGUISHED a. Depress CI reset pushbutton

b. Verify annunciator A-26, CONTAINMENT ISOLATION, extinguished.

EOP: T I 'TLE LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0. 1 REQUIRED PAGE 4 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 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

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

IF less than two SW pumps running, THEN go to Step 4.

c. Verify turbine building SW c. Manually align valves' isolation valves - OPEN MOV-4613 and MOV-4670

~ MOV-4614 and MOV-4664

d. Start at least two air d. IF air compressors can NOT be compressors (75 kw each) started, THEN dispatch AO to locally reset compressors as necessary.

e. Check IA supply: e. 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 6. WHEN IA restored, THEN do Steps 3f through 5.

f. Reset both trains of XY relays for IA to CNMT (AOV-5392) if necessary

g. Verify IA to CNMT AOV-5392 - OPEN

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED PAGE 5 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

• • • • • • • • • • • • + ****************************

CAUTION THE LOADS PLACED ON THE ENERGIZED AC EMERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OF THE POWER SOURCE.

• • • • • • • • • • • • + ****************************

4 Manually Load Following Equipment On AC Emergency Busses:

a. Start one CCW pump (124 kw)

b. Energize MCCs as power supply permits

~ MCC A from Bus 13

~ MCC B from Bus 15

~ MCC E from Bus 15

~ MCC F from Bus 15

c. Verify instrument bus D- c. Restore power to instrument bus ENERGIZED D from MCC B or MCC A I

(maintenance supply).

d. WHEN bus 15 restored, THEN reset control room lighting

e. Start at least one CNMT RECIRC fan

f. Restore Rx head cooling as power supply permits:

1) Check IA to CNMT - AVAILABLE 1) Go to Step 5.

2) Start one Rx compartment 2) Perform the following:

cooling fan (23 kw each) o Dispatch AO to reset UV relays at MCC C and MCC D.

o Manually start one fan as power supply permits.

(23 kw)

3) Start both control rod shroud 3) Manually start at least one fans (45 kw each) fan (45 kw)

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

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REV! 6 ECA-0.1 LOSS OF ALI, AC POWER RECOVERY WITHOUT SI REQUIRED of 20 PAGE 6 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check If Charging Flow Has Been Established:

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

1) Ensure seal injection needle valves to both RCPs isolated:

~ RCP A, V-300A

~ RCP B, V-300B

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

b. Charging pump suction aligned to b. Manually align valves as RWST' necessary.

LCV-112B - OPEN IF LCV-112B can NOT be opened, THEN perform the following:

o LCV-112C - CLOSED

1) Verify charging pump A NOT running and place in PULL 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 (75 kw each) as necessary and adjust charging flow to restore PRZR level

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REV 6 LOSS OF ALL AC POWER RECOVERY WITHOUT SI ECA-0.1 REQUIRED PAGE 7 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Verify SI Flow Not Required:

a. RCS subcooling based on core a. Go to ECA-0.2, LOSS OF ALL AC exit T/Cs - GREATER THAN O' POWER RECOVERY WITH SI REQUIRED, USING FIGURE MIN SUBCOOLING Step l.

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 go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step l.

7 Check PRZR Level GREATER Control charging flow as necessary.

THAN 134 [404'OR ADVERSE CONTAINMENT]

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REV 6 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED of 20 PAGE 8 STEP ACTION/EXPECTED RESPONSF 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 IF S/G 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 valves fail open on loss of IA.

8 Check Intact S/G Levels:

a. Narrow range level - GREATER a. Maintain total feed flow greater THAN 5% [25% adverse CNMT] 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 valves open.

~ MOV-4007

~ MOV-4008

2) Manually start MDAFW pumps as necessary (228 KW each).

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

[25% adverse CNMT] and 50%

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REV' ECA-0. 1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 9 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Establish S/G Pressure Control:

a. Adjust S/G ARV controllers to maintain existing S/G pressure

b. Verify S/G ARV controllers in AUTO

c. Dispatch AO to perform Attachment SD-2 NOTE; If any heat tracing or BAST temperatures are low, flowpaths from the BASTs should be evaluated before being used.

10 Check BAST Temperature: Perform the following:

o Annunciator B-31, BAST TEMP OR a. Verify SI pump suction valves LO N2 PRESS - EXTINGUISHED from BASTs closed.

o Annunciator K-22, HEAT TRACING ~ MOV-826A or MOV-826B SYSTEM - EXTINGUISHED ~ MOV-826C or MOV-826D

b. Open at least one SI pump suction valve from RWST.

o MOV-825A

-OR-o MOV-825B

c. Dispatch AO to locally check BAST and heat tracing temperatures.

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED pAGE 10 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Safeguards bus pump is energized.

switches should be placed in AUTO only if associated 11 Place Following Pump Switches In AUTO:

~ SI pumps

~ RHR pumps

~ CNMT spray pumps NOTE: FR procedures may now be implemented as necessary.

12 Verify Adequate SH Flow To CCW Hx:

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

IF less than two SW pumps can be operated, THEN go to Step 19.

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 Continue with Step 19. WHEN SW

~ MOV-4616 and MOV-4735 restored to AUX BLDG, THEN do Steps 12c through 18.

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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LOSS OF ALZ, AC POWER RECOVERY WITHOUT SI REV: 6 ECA-F 1 REQUIRED PAGE 11 of,20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check If Normal Operation CVCS Can Be Established

a. Verify IA restored: a. Continue with Step 19. WHEN IA restored, THEN do Steps 13 o IA to CNMT (AOV-5392) - OPEN through 18.

o IA pressure - GREATER THAN 60 PSIG

b. Charging pump - ANY RUNNING b. Continue with Step 19. WHEN any charging pump running, THEN do Steps 14 through 18.

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED PAGE 12 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED Check If Seal Return Flow Should Be Established:

a. Verify RCP ¹1 seal outlet a. Go to Step 15.

temperature - LESS THAN 235'F

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 if necessary

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 ¹1 seal leakoff flow e. IF any RCP seal leakoff flow LESS THAN 5.5 GPM greater than 5.5 gpm THEN close the affected RCP seal discharge valve:

~ RCP A, AOV-270A

~ RCP B, AOV<<270B IF both RCP seal discharge valves are shut, THEN go to Step 15.

f. Verify RCP ¹1 seal leakoff flow f. Refer to AP-RCP.1, RCP SEAL GREATER THAN 0.25 GPM MALFUNCTION.

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REV: 6 ECA-0. 1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 13 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Verify PRZR Level GREATER Continue with Step 19. WHEN PRZR THAN 13% [404 adverse CNMT] level increases to greater than 13%

[40% adverse CNMT], THEN do Steps 16 through 18.

16 Establish Normal Letdown: IF RCP seal return has been established, THEN establish excess

a. Establish charging line flow to letdown as follows:

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

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

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

valve

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

c. Place letdown 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 if excess letdown should be placed in necessary 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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LOSS OF ALI, AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED of 20 PAGE 14 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check VCT Makeup System:

a. Verify the following: a. IF VCT auto makeup can NOT be established, THEN manually

1) Boric acid flow control valve control VCT level (Refer to SET FOR REQUIRED CSD ER-CVCS 1, REACTOR MAKEUP

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CONCENTRATION (Refer to CONTROL MALFUNCTION).

Figure SDM)

2) At least one BA and.RMW pump in AUTO

3) RMW mode selector switch in AUTO

4) RMW control armed - RED LIGHT LIT

b. Check VCT level b. Manually increase VCT makeup flow 'as follows:

o Level - GREATER THAN 20%

1) Ensure BA transfer pumps and

-OR- RMW pumps running. IF NOT",

THEN dispatch AO to reset o Level - STABLE OR INCREASING 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.

IF VCT level can NOT be restored, THEN go to Step 19.

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED PAGE 15 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 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'uction aligned, to RWST:

o LCV-112B open o LCV-112C closed

2) Continue with Step 19. WHEN VCT level greater than 40%,

THEN do Step 18b.

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

o LCV-112C - OPEN o LCV-112B - CLOSED 19 Control'RZR Level:

a. Check letdown - IN SERVICE a. S top and s tar t charging pumps as necessary to control PRZR level.

b. Maintain PRZR level between 13%

(40% adverse CNMT] and 50%

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LOSS OF ALI, AC POWER RECOVERY WITHOUT SI REV 6 ECA-0.1 REQUIRED PAGE 16 of 2O 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 a PRZR PORV select one with an operable block valve.

20 Establish PRZR Pressure Control:

a. Check letdown - IN SERVICE a. Perform the following:

1) Use PRZR heaters and one PRZR PORV to maintain RCS pressure.

IF IA NOT available, THEN Refer to Attachment N2 PORVS

~ to operate PORV.

2) Go to Step 21.

b. Use PRZR heaters and auxiliary spray valve (AOV-296) to maintain RCS pressure 21 Verify Natural Circulation: Increase dumping steam from intact S/Gs.

o RCS subcooling based on core exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING o S/G pressures - STABLE OR DECREASING o RCS hot leg temperatures STABLE OR DECREASING o Core exit T/Cs - STABLE OR DECREASING o RCS cold leg temperatures - AT SATURATION TEMPERATURE FOR S/G PRESSURE

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SI REV: 6 ECA-0 ' LOSS OF ALI, AC POWER RECOVERY WITHOUT REQUIRED PAGE 17 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

22 Check If Source Detectors Should Range Be Energized:

a. Source range channels a. Go to Step 22e.

DEENERGIZED

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

EITHER CHANNEL LESS THAN 10 10 AMPS 1) IF neither intermediate range channel is decreasing THEN initiate boration.

2) Continue with Step 23. WHEN flux is LESS THAN 10 1 amps on any operable channel, THEN do Steps 22c through e.

c. Check the following: c. Continue with Step 23. WHEN either condition met, THEN do o Both intermediate range Steps 22d and e.

channels - LESS THAN 10 AMPS

-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.1, SR MALFUNCTION and go to Step 23.

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

LID EOP: TITLE:

LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 6 ECA-0.1 REQUIRED PAGE 18 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o RCP THERMAL BARRIER COOLING SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE POTENTIAL INTRODUCTION OF STEAM INTO THE CCW SYSTEM AND THERMAL SHOCK TO RCP.

o RCP SEAL INJECTION SHOULD BE ESTABLISHED SLOWLY TO MINIMIZE RCP THERMAL, STRESSES AND POTENTIAL SEAL FAILURES.

o AS PART OF SUBSEQUENT RECOVERY ACTIONS, RCP(S) SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION UNLESS REQUIRED BY AN INADEQUATE CORE COOLING SITUATION.

NOTE: SW should be aligned to CCW Hxs before restoring RCP seal cooling.

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

a. Check CCW to RCPs:

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

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REV: 6 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 19 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

24. Verify Adequate Shutdown Margin:

a. Direct HP to sample RCS and PRZR liquid for boron concentration

b. Verify boron concentration- b. Borate as necessary.

GREATER THAN REQUIREMENTS OF FIGURE SDM 25 Maintain Stable Plant Conditions

a. RCS pressure - STABLE a. Control PRZR heaters and auxiliary spray if available.

b. RCS temperature - STABLE b. Control dumping steam as necessary.

c. PRZR level - BETWEEN 13% [40% c. Control charging as necessary.

adverse CNMT] and 50%

d. Intact S/G level -. BETWEEN 17% d. Control S/G feed flow as

[25% adverse CNMT] and 50% necessary.

26 Verify SI Flow Not Required:

a. RCS subcooling based on core a. Go to ECA-0.2, LOSS OF ALL AC exit T/Cs - GREATER THAN O' POWER RECOVERY WITH SI REQUIRED, USING FIGURE MIN SUBCOOLING Step l.

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 go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.

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REV' ECA-0. 1 LOSS OF AI,I, AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 20 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED h

27 Try To Restore Offsite Power Maintain plant condition stable To All AC Busses (Refer to using AC emergency power.

ER-ELEC.1, RESTORATION OF OFFSITE POWER) 28 Determine Circulation IfCooldown Natural Is Required:

a. Consult plant staff to determine a. IF cooldown NOT required, THEN if RCS cooldown is necessary go to 0-3, HOT SHUTDOWN WITH XENON PRESENT.

b. At least one RCP - OPERABLE b. Go to ES-0.2, NATURAL CIRCULATION COOLDOWN.

c. Go to 0-2.2, PLANT SHUTDOWN FROM HOT SHUTDOWN TO COLD SHUTDOWN

-END-

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REV! 6 ECA-0 ' LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED of 1 PAGE 1 ECA-0.1 APPENDIX LIS'T TITLE PAGES

1) FIGURE MIN SUBCOOLING

2) FIGURE SDM

3) ATTACHMENT SD-1

4) ATTACHMENT SD-2

5) ATTACHMENT N2 PORVS

6) ATTACHMENT SEAL COOLING

7) ATTACHMENT AUX BLDG SW

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SI REV: 6 ECA-0.1 LOSS OF AIL AC POWER RECOVERY WITHOUT REQUIRED 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 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 700 INADEQUATE SUBCOOLING 600 REGION ADVERSE CNHT 500 400 300 200 NORMAL CNMT TEMPERATURE 100 INCREMENTS 10'f 0

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

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REV 6 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED of 1 PAGE 1 FIGURE SDM BORON CONCENTRATION (PPH) 1800 BORON INCREMENTS 20 PPH 1600 1400 ADEQUATE SDM 1200 100 PPH CONSERVATISH INCLUDED 1000 SOO 600 400 ORA 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.

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