ML17262A165

Rev 9 to FR-H.1, Response to Loss of Secondary Heat Sink.

ML17262A165
Person / Time
Site:	Ginna
Issue date:	08/29/1990
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A163	List: ML17262A162 ML17262A164 ML17262A165
References
FR-H.1, NUDOCS 9010020147
Download: ML17262A165 (100)

Text

EOP: TITLE:

REV 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 1 of 25 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE GINNA STATION START:

CATEGORY 1.0 DATE TIME REVIEWED BY:

Cohtpf ETEg.

DATE

~l 900921 TIME:

9@10020 147 C< 050002<4 p>R &DOC PDC P

I R REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 2 of 25 A. PURPOSE This procedure provides actions for responding to a loss of secondary heat sink in both S/Gs.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure is entered from:

a. E-O, REACTOR TRIP OR SAFETY INJECTION, when minimum AFW flow is not verified.

b. F-O.3, HEAT SINK Critical Safety Function Status Tree on a RED condition.

EOP: TITLE:

REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 3 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • *.* * *

• CAUTION o IF TOTAL FEED FLOW IS LESS THAN 200 GPM DUE TO OPERATOR ACTION, THIS PROCEDURE SHOULD NOT BE PERFORMED.

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

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

1 Check If Secondary Is Required:

Heat Sink

a. RCS pressure - GREATER THAN ANY a. IP RWST level greater than 28X, NON-FAULTED S/G PRESSURE THEN go to E-l," LOSS OF REACTOR OR SECONDARY COOLANT, Step 1.

IP RWST level less than 28X, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.

b. Check the following: b. Try to place RHR System in service while continuing with o RCS cold leg temperature- this procedure:

GREATER THAN 350'F o RCS pressure - GREATER THAN

1) Reset SI if necessary.

400 psig t300 psig adverse 2) Place letdown pressure CNMT] controller in MANUAL CLOSED.

3) Check the following valves-OPEN:

~ AOV-371, letdown isolation valve

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

~ At least one letdown orifice valve (AOV-200A, AOV-200B, or AOV-202)

4) IF pressure on PI-135 less ttIan 400 psig, THEN establish RHR normal cooling (Refer to Attachment RHR COOL).

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

EOP: TITLE REV' FR-H'.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 4 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 Monitor Secondary Heat Sink: Perform the following:

o Verify both S/G wide range a. Trip both RCPs.

levels - GREATER THAN 35.inches

[110 inches adverse CNMT] b. Go to Step 11 to initiate bleed and feed cooling.

o Verify PRZR pressure - LESS THAN 2335 PSIG

EOP: 1'1TLE: REV 9 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 5 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Try to Establish AFW Flow To At Least One S/G:

a. Check MCB indications for cause of APW failure:

1) Verify CST level - GREATER 1) Refer to ER-APW.l, ALTERNATE THAN 5 PERT WATER SUPPLY TO APW PUMPS.

2) Verify busses supplying power 2) Continue attempts to restore to MDAPW pumps - ENERGIZED power to MDAFW pumps.

~ Bus 14

~ Bus 16

3) Check AFW valve alignment 3) Dispatch AO to locally align valves as necessary.

o AFW pump discharge valves

- OPEN

~ MOV-4007

~ MOV-4008

~ MOV-3996 o TDAFW pump flow control valves - OPEN

~ AOV-4297

~ AOV-4298

b. Check APW pumps - ALL RUNNING b. Perform the following:

1) Manually start MDAFW pumps.

2) Check TDAPW pump steam supply valves OPEN.

~ MOV-3504A o MOV-3505A

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

c. Check total flow to S/Gs- c. Continue attempts to restore AFW

'REATER THAN 200 GPM flow and go to Step 4.

d. Return to procedure and step in effect

EOP:

REV' FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT 'SINK PAGE 6 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Stop Both RCPs

0 EOP: TITLE:

REV 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINE PAGE 7 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION IF OFFSITE POWER IS LOST APTER SI RESET, SELECTED SW PUMPS AND ONE CCW PUMP VILL AUTO START ON EMERGENCY D/G. MANUAL ACTION VILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.

5 Try To Establish MFW Flow To

. At Least One S/G:

a. Check condensate system: a. IF offsite power available, THEN try to place condensate system o Condensate pump - ANY RUNNING in service.

o MPW pump suction pressure- IF NOT, THEN go to Step 6.

GREATER THAN 185 PSIG

b. Reset SI if necessary

c. Reset feedwater isolation

d. Establish MFV flov: d. IF MFV flov can NOT be established, THEN go to Step 6.

1) Check MFV pump discharge valves - CLOSED

2) Verify MFV flow control bypass valve - OPERABLE

3) Dispatch AO to restore MFW pump SV cooling

4) Verify S/G blovdown key svitches in NORMAL

5) Ensure one MPV pump recirc valve - OPEN

6) Start selected MFV pump

7) Open MPW pump discharge valve

8) Open MPW flow control bypass valves as necessary to restore S/G level

e. Go to Step 9

EOP: TITLE:

REV 9 FR-H. 1 ~

RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 8 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 6 Establish SAFW Flow:

a. Perform the following: a. IF greater than 200 gpm, total SAFW flow can NOT be

1) Align SAFW system for established, THEN go to Step operation (Refer to Attachment SAFW) 7.'.

2) Start both SAFW pumps

3) Verify SAFW total flow-GREATER THAN 200 GPM Go to Step 9

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • CAUTION IF S/G WIDE RANGE LEVEL DECREASES TO LESS THAN 35 INCHES [110 INCHES ADVERSE CNMT] OR IF PRZR PRESSURE INCREASES TO GREATER THAN'335 PSIG, THEN STEPS ll through 13 SHOULD BE IMMEDIATELY INITIATED FOR BLEED AND FEED.

7 Establish Condenser Steam Dump Pressure Control:

a. Verify condenser available: a. Place S/G ARV controllers in AUTO at desired pressure and go o Any MSIV - OPEN to Step 8.

o Annunciator G-15, STEAM DUMP

- LIT

b. Ad)ust condenser steam dump controller HC-484 to desired pressure and verify in AUTO

c. Place steam dump mode selector switch to MANUAL

EOP:

REV: 9 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 9 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION FOLLOWING BLOCK OP AUTOMATIC SI ACTUATION, MANUAL SI ACTUATION MAY BE REQUIRED IP CONDITIONS DEGRADE.

• *.* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

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

8 Try To Establish Feed Flow From Condensate System:

a. Check condensate pumps - ANY a. IP offsite power available, THEN RUNNING manually start at least one condensate pump. IF a condensate pump can NOT be started, THEN go to Step 10.

b. Establish condensate flowpath b. Go to Step 10.

(Refer to Attachment COND TO S/G)

c. Depressurize RCS to less than 1950 psig:

1) Deenergize PRZR heaters.

2) Check letdown - IN SERVICE 2) Use one PRZR PORV. IF IA NOT available, THEN refer to Attachment ~N PORVS.

IP PORV NOT available, THEN use auxiliary spray valve, AOV-296 and go to Step 8d.

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

d. WHEN RCS pressure less than 1950 psig, THEN perform the following:

1) Block SI

2) Dump steam to condenser at 2) Manually or locally dump maximum rate to depressurize steam using intact S/G ARV.

at least one S/G'o less than 380 psig

e. Verify condensate flow to S/Gs e. Go to Step 10.

EOP: .TITLE: REV' FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 10 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Check S/G Levels:

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

adverse CNMT]. IF NOT verified, THEN go to Step 10.

b. Return to procedure and step in effect 10 Verify Secondary Heat Sink:

a. Check the following: a. Perform the following:

o Both S/G wide range levels- 1) Trip both RCPs.

GREATER THAN 35 inches

[110 inches adverse CNMT] 2) Go to Step ll to initiate bleed and feed cooling.

o PRZR pressure - LESS THAN 2335 PSIG

b. Return to Step 1

CAUTION STEPS 11 THROUGH 13 MUST BE PERFORMED QUICKLY IN ORDER TO ESTABLISH RCS HEAT REMOVAL BY RCS BLEED AND FEED.

11 Actuate SI and CI

0 EOP: TITLE:

REV: 9 FR-H'.l SINK RESPONSE TO LOSS OF SECONDARY HEAT PAGE ll of 25 STEP 'CTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

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

12 Verify RCS Feed Path: Manually start pumps and align valves as necessary to establish

a. Check SI pumps - AT LEAST ONE RCS feed path.

RUNNING XF a feed path can NOT be

b. Check valve alignment for established, THEN continue attempts operating SI pumps - PROPER to establish feed flow. Return to EMERGENCY ALIGNMENT Step 3.

13 Establish RCS Bleed Path:

a. Open both PRZR PORV block valves a. Ensure power to MCCs supplying block valves.

~ MCC C for MOV-515

~ MCC D for MOV-516 IP any block valve can NOT be opened, THEN dispatch AO to locally check breaker:

~ MOV-515, MCC C position 6C

~ MOV-516, MCC D position 6C

b. Place both PRZR PORV switches to OPEN

c. Align RCS overpressurization c. IP BOTH PRZR PORVs can NOT be nitrogen system to open both opened, THEN perform the PRZR PORVs (Refer to Attachment following:

N2 PORVS)

1) Ensure both PORV switches in OPEN.

2) Go to Step 14.

EOP: T I TI.E:

REV 9 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK l PAGE 12 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION IP OFPSITE 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 SAPEGUARDS EQUIPMENT.

14 Check If SI Can Be Reset:

a. Check the following: a. IF PRZR pressure stable or increasing, THEN reset SI and go o PRZR pressure - LESS THAN to Step 15.

1750 PSIG IP PRZR pressure decreasing,

-OR- THEN perform the following:

o Either steamline pressure- 1) WHEN PRZR pressure less than LESS THAN 514 PSIG 1750 psig, THEN reset SI.

2) Go to Step 15.

b. Reset SI 15 Reset CI:

-

a. Operate CI reset key switch

b. Verify annunciator A-26, b. Perform the following:

CONTAINMENT ISOLATION-EXTINGUISHED 1) Reset SI.

2) Operate CI reset key switch.

EOP:

REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 13 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 16 Verify Adequate SW Flow To CCW Hz:

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

IR 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 - AT LEAST ONE SET OPEN to Attachment AUX BLDG SW)i

~ MOV-4615 and MOV-4734

~ MOV-4616 and MOV-4735

P I

EOP: TITLE: REV' FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 14 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 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 turbine building SW b. Manually align valves.

isolation valves - 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 19. WHEN IA restored, THEN do Steps 17e, f and 18.

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

f. Verify IA to CNMT AOV-5392 - OPEN

EOP: TITLE:

REV 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 15 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Restore RCS Overpressurization Nitrogen System To Standby:

a. Verify instrument bus D- a. Perform the following:

ENERGIZED

1) Ensure steam dump mode control in MANUAL.

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

b. Place relief valve PC-431 and PC-430 arming switches to BLOCK

~ SOV-8619A

~ SOV-8619B

c. Close SURGE TK VLVs

~ SOV-8616A

~ SOV-8616B NOTE: PRZR PORVs may close temporarily until adequate IA pressure is restored in CNMT.

19 Verify Adequate RCS Bleed IF PRZR PORVs can NOT be opened, Path BOTH PRZR PORVS OPEN THEN perform the following:

a. Open Rx vessel head vents.

~ SOV-590

~ SOV-591

~ SOV-592

~ SOV-593

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

c. Align any available low pressure water source to the depressurized S/Gs. '

EOP: TITLE: REV' FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 16 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION THE RCS BLEED PATH MUST BE MAINTAINED EVEN IF RCS PRESSURE REMAINS GREATER THAN SI PUMP SHUTOFF HEAD.

20 Maintain RCS Heat Removal:

o Maintain SI flow o Maintain both PRZR PORVs and block valves - OPEN 21 Check Normal Power Available Verify adequate emergency D/G To Charging Pumps: capacity to run charging pumps (75 kw each).

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

CLOSED

EOP: TITLE: REV 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 17 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 Check Been If Charging Established:

Flow Has

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

1) IP 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 locally close seal injection needle valve(s) to affected RCP:

~ RCP A, V-300A

~ RCP B, V-300B

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

b. Align charging pump suction to b. IP 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 establish maximum charging flow

EOP: TITLE: REV 9 FR-H; 1 RESPONSE TO LOSS OF SECONDARY HEAT SINK t PAGE 18 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION o IF RWST LEVEL DECREASES TO LESS THAN 28%, THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING STEPS 1 THROUGH 13 OF ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.

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

23 Continue Attempts To Establish Secondary Heat Sink In At Least One S/G:

~ AFW flow

~ Main FW flow

~ Standby AFW flow

~ Condensate flow 24 Check For Adequate Secondary Heat Sink:

a. Check narrow range level in at a. Return to Step 23.

least one S/G - GREATER THAN 5%

(25% adverse CNMT]

b. Adjust S/G ARV controllers to existing S/G pressure

'I 0

EOP: TITLE: REV 9 FR-H'.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 19 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION IF THE RCS IS WATER SOLID, THEN ANY INCREASE IN RCS TEMPERATURE MAY RESULT IN A SIGNIFICANT RCS PRESSURE INCREASE. RCS HEATUP SHOULD BE PREVENTED.

25 Monitor RCS Temperatures: Perform the following:

o Core exit T/Cs - DECREASING a. Control steam dump and feed flow to establish natural circulation o RCS hot leg temperatures- and stabilize RCS temperature.

DECREASING

b. Return to Step 23.

26 Check CCW Pumps ANY RUNNING Perform the following:

a. IF 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

b. Manually start one CCW pump (124 kw).

EOP: TITLE:

REV 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 20 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION IF RCS IS SOLID, THEN TERMINATION OP PEED AND BLEED MAY RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS INFLOV AND OUTFLOW ARE CAREFULLY CONTROLLED.

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

a. Three SI pumps - RUNNING a. Go to Step 28.

b. RCS subcooling based on core b. Check the following:

exit T/Cs - GREATER THAN 35'F

[90'F adverse CNMT] USING FIGURE o RCS pressure greater than MIN SUBCOOLING 1625 psig [1825 psig adverse

'NMT]

o RCS subcooling based on core exit T/Cs greater than O' using Figure MIN SUBCOOLING IP NOT, THEN go to Step 30.

c. Check PRZR level, - GREATER THAN c. Do NOT stop SI pump. Go to 13% [40% adverse CNMT] Step 30.

d. Stop one SI pump

EOP: TiTLE:

REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 21 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 28 Check If One Of Two SI,Pumps Should Be Stopped:

a. Two SI pumps - RUNNING a. Go to Step 29.

b. Determine required RCS subcooling from table:

Charging Pump RCS Subcooling,Criteria Availability

'NONE 120'F [200'F adverse CNMT]

ONE 115'F [190'F adverse CNMT]

TVO 105'F [180'F adverse CNMT]

THREE 100'F [175'F adverse CNMT]

c. RCS subcooling based on core c. Check the following:

exit T/Cs - GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE o RCS pressure greater than MIN SUBCOOLING 1625 psig [1825 psig adverse CNMT]

o RCS subcooling based on core exit T/Cs greater than O' using Figure MIN SUBCOOLING IF NOT, THEN go'to Step 30.

l

d. PRZR level - GREATER THAN 13% d. Do NOT stop SI pump. Go to

[40% adverse CNMT] Step 30.

e. Stop one SI pump

EOP:

REV: 9 FR-H.l RESPONSE TO -LOSS OF SECONDARY HEAT SINK PAGE 22 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 29 Check Be If Last Stopped:

SI Pump Should

a. One SI pump - RUNNING a. Go to Step 31.

b. Check the following: b. Go to Step 30.

o RCS subcooling based on core exit T/Cs greater than O' using Figure MIN SUBCOOLING o RCS pressure greater than 1625 psig [1825 psig adverse CNMT]

c. PRZR level - GREATER THAN 13% c. Do NOT stop SI pump. Go to

[40% adverse CNMT] Step 30.

d. Stop running SI pump

e. Go to Step 31

C I EOP: REV 9 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 23 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: After closing a PORV, it may be necessary to wait for RCS pressure to increase to permit stopping SI pumps in Steps 27, 28 and 29.

30 Check PRZR PORV Status:

a. PRZR PORVs - ANY OPEN a. Close any open Rx vessel head vent valves and go to appropriate plant procedure:

o IF RWST level greater than 28X, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1.

-OR-o IF RWST level less than 28X, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.

b. PRZR PORVs - BOTH OPEN b. IF PRZR level greater than 75%

[65% adverse CNMT], THEN perform the following:

1) Establish excess letdown as follows:

o Place AOV-312 to NORMAL.

o Ensure CCW pump running.

o Ensure CCW from excess letdown Hx open (AOV-745).

o Open excess letdown isolation valve AOV-310.

o Slowly open HCV-123.

2) Stop all but one charging pump and decrease charging flow to as necessary to control RCS pressure.

This Step continued on the next page.

EOP: TITLE:

REV' FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINE PAGE 24 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED (Step 30 continued from previous page)

c. Close one open PRZR PORV c. Close PORV block valve.

,

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

o IF RWST level greater than 28%, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step l.

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

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

d. Return to Step 27

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

31 Check PRZR PORVs And Rx Close all PRZR PORVs and Rx vessel Vessel Head Vent: Valves ALL head vent valves. IF any PRZR PORV CLOSED can NOT be closed, THEN manually close its block valve.

0 EOP: TITLE:

REV 9 FR-H.l RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 25 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 32 Check Stopped:

If RHR Pumps Should Be

a. Check RCS pressure: a. Go to appropriate plant procedure:

1) Pressure - GREATER THAN 250 psig [465 psig adverse o IF RWST level greater than CNMT] 28%, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT,

2) Pressure - STABLE OR Step 1.

INCREASING

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

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

b. Stop RHR pumps and place in AUTO 33 Start Charging Pumps As Necessary And Control Charging Flow To Maintain PRZR Level 34 Go To ES 1 1 I SI TERMINATIONI Step 8

-END-

0 EOP: TITLE:

REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK PAGE 1 of 1 FR-H.1 APPENDIX LIST TITLE PAGES

1) FIGURE MIN SUBCOOLING

2) ATTACHMENT CNMT RECIRC FANS

3) ATTACHMENT COND TO S/G

4) ATTACHMENT N2 PORVS

5) ATTACHMENT SD-1

6) ATTACHMENT RHR COOL

7) ATTACHMENT SAFW

8) ATTACHMENT AUX BLDG SW

8 EOP: TITLE:

REV: 9 FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK 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 2300 RCS PRESSURE 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 ADUERS E CNMT 500 400 300 200 NORMAL CNMT TEMPERATURE INCREMENTS 10'F 100 0

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

EOP: TlTlE: REV: 2 ATT EOP/AP ATTACHMENTS PAGE 1 of 2 ATTACHMENT GEN DEGAS Supt. I l l~ I>

CAUTION: OBSERVE ALL NORMAL PRECAUTIONS FOR HANDLING EXPLOSIVE MIXTURES OF HYDROGEN IN AIR.

1. Close all H2 manifold bottle stops.

o Valve V-6994A o Valve V-6994B o Valve V-6995 o Valve V-6998

2. Close H2 regulator isolation valve, V-6995X (gas bottle house).

3. Isolate hydrogen feed by closing valve V-6994K and V-6999C (TURB BLDG below generator).

4. Connect the C02 feed to the bottom of the generator by opening valve V-6994G.

5. Open vent from top of generator, valve V-6994J.

6. Open vent isolation valve, V-6995P, to initiate H2 release through vent line.

7. Fully open C02 manifold header stop valve, V-6999A (Gas Bottle House).

CAUTION: DO NOT ALLOW MACHINE PRESSURE TO EXCEED 3 TO 5 PSIG DURING THE TIME C02 IS BEING ADMITTED.

8. WHEN generator pressure is less than 5 psig, as indicated on PI-2805, THEN open all C02 bottle stops fully to admit C02 to generator.

o Valve V-6993C o Valve V-6999 o Valve V-6999B o Valve V-6998A

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REV 2 ATT EOP/AP ATTACHMENTS PAGE.2 of 2 ATTACHMENT GEN DEGAS

9. Adjust vent isolation V-6995P OR isolate C02 bottles as necessary to maintain 3-5 psig pressure as indicated on PI-2805.

10. Purge a minimum of 20 C02 cylinders through the generator.

When the purge is complete, the C02 may be shut off by closing the valves in the C02 supply. first, then closing valves V-6999A and V-6994G.

11. Open the breaker for the DC seal oil backup pump (DC panel S-9 TURB BLDG basement west end breaker position 12).

12. WHEN conditions permit, THEN refer to T-31.2, REMOVING HYDROGEN WITH C02 REMOVING C02 WITH INSTRUMENT AIR, to complete purging C02 with air.

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EOP: TITLE: REV: 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 1 of 19 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE T SUPERINT ND NT EF EC IVE DATE CATEGORY 1.0 REVIEWED BY:

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REV: 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 2 of 19 A- PURPOSE This procedure provides actions to respond to a loss of N12A or 12B SS Transformer from HSD or at power conditions.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure may be entered from:

a. AP-TURB.1, when busses 12A and/or 12b are found to be deenergized.

2. SYMPTOMS The symptoms of loss of N12A or 12B SS Transformer are:

a. Annunciator L-20, 12A XFMR OR 12A BUS TROUBLE, lit, or

b. Annunciator L-28, 12B XFMR OR 12B BUS TROUBLE, lit.

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EOP: TITLE: REV 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 3 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION o IF AT ANY TIME DURING THIS PROCEDURE A REACTOR TRIP OR SI IS REQUIRED, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.

o IF A TURBINE RUNBACK HAS OCCURRED, THEN AP-TURB.2, AUTOMATIC TURBINE RUNBACK, SHOULD BE PERFORMED.

1 Verify Emergency D/G IF appropriate emergency D/G(s) NOT Associated With Dead Bus- running, THEN attempt to start RUNNING manually. (Refer to ER-D/G.l, RESTORATION OF A FAILED D/G.)

o Bus 12A - D/G A o Bus 12B - D/G B 2 Verify Both Trains Of AC Try to restore power to all AC Emergency Busses Energized To At Least 420 VOLTS: 'eemergency busses. IR power can restored to at least one train, THEN go to ECA-O.O, LOSS OR. ALL AC NOT o Bus 14 and bus 18 POVER, Step l.

o Bus 16 and bus 17 3 Verify Service Water System Operation:

a. SV pumps - AT LEAST ONE RUNNING a. Manually start pumps as IN EACH LOOP necessary. (258 kw each)

b. SW header pressure - GREATER b. Manually align valves as THAN 40 PSIG IN EACH LOOP necessary.

h EOP: TITLE: REV 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 4 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Verify Bus 11A And 11B Normal IP turbine trip has occurred from Feed Breakers CLOSED power less than 50X, THEN go to AP-TURB.l, TURBINE TRIP WITHOUT RX TRIP REQUIRED, Step l.

IP turbine stop valves open, THEN trip turbine and go'o AP-TURB.1,

. TURBINE TRIP WITHOUT RX TRIP REQUIRED, Step l.

IP turbine NOT previously latched, THEN perform the following:

a. Ensure reactor power less than SX.

b. Go to Step 16.

6 Check S/G Level Control Place MPW regulating valves in MANUAL and control feed flow as o S/G level - TRENDING TO PROGRAM required.

o MPW regulating valves-CONTROLLING IN AUTO NOTE: When restarting equipment for recovery, it is preferable to start equipment on busses being supplied from offsite power, if possible.

7 Establish Normal Charging Flow:

a. Verify 2 charging pumps - RUNNING a. Start charging pumps as necessary (75 kw each).

b. Ad)ust charging pump speed and HCV-142 as necessary to restore PRZR level and labyrinth seal D/P

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REV: 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 5 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Check CVCS Letdown:

a. Normal letdown in service: a. Perform the folloving:

o Letdovn flov - APPROXIMATELY 1) Place AOV-427 switch to CLOSE 40 GPM

2) Place letdown orifice o Letdown flow - STABLE isolation valves to CLOSE.

o Letdovn pressure- 3) Go to Step 9.

APPROXIMATELY 250 PSIG

b. Go to Step ll 9 Check PRZR Level GREATER Continue with Step 12. VHEN PRZR THAN 13% level greater than 13K, THEN do Steps 10 and 11.

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EOP: TITLE: REV: 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 6 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 10 Establish Normal Letdown: Establish Excess Letdown:

a. Establish charging line flow to a. Place excess letdown divert REGEN Hx - GREATER THAN 20 GPM. valve, AOV-312, to NORMAL

b. Verify the following switches in b. Ensure CCW from excess letdown CLOSE: open, AOV-745

~ Letdown orifice valve c. Ensure RCP seal return isolation (AOV-'200A, AOV-200B, and valve open, MOV-313 AOV-202)

~ .Loop B cold leg to REGEN Hx d. Open excess letdown isolation AOV-427 valve, AOV-310

c. Place letdown controllers in e. Slowly open HCV-123 to maintain MANUAL at 25X open. excess letdown temperature less than 195'F and pressure less

~ TCV-130 than 100 psig

~ PCV-135

d. Open AOV-427.

e. Open letdown orifice valves as necessary.

f. Place TCV-130 in AUTO at 105'F.

g. Place PCV-135 in AUTO at 250 psig.

h. Adjust charging pump speed and HCV-142 as necessary.

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EOP: TITLE: REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 7 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION, o OBSERVE D/G LOADING LIMITS OF 2300 KW FOR 1/2 HOUR, 2250 KW FOR 2 HOURS, AND 1950 KW FOR CONTINUOUS SERVICE.

o ANYTIME EMERGENCY D/GS ARE THE ONLY SOURCE OF AC POWER TO THE PLANT, PERSONNEL SHOULD BE ASSIGNED TO MAINTAIN SURVEILLANCE OF THE D/GS.'1 Verify PRZR Heaters Restored: Perform the following:

o PRZR proportional heater breaker a. Verify adequate D/G capacity CLOSED available for PRZR heaters (400 kw each bank).

o PRZR backup heater breaker-RESET/IN AUTO b. Reset and close PRZR proportional heater breaker if necessary.

c. Reset PRZR backup heater breaker and return to AUTO if necessary.

IF on natural circulation and at least 100 kw of PRZR heaters can NOT be restored within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, THEN be on RHR within an additional 6 hours. (Refer to Technical Specification 3.1.1.5)

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EOP: TITLE:

REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 8 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Establish Stable Plant Conditions:

a. Reset NIS rod drop rod stop signals (at NIS racks)

b. Tavg - TRENDING TO TREF b. Insert control rods or, if necessary, decrease turbine load to match Tavg to Tref.

c. PRZR pressure - TRENDING TO c. Verify proper operation of PRZR 2235 PSIG heat'ers and spray or take manual control of PC-431K.

d. PRZR level - TRENDING TO PROGRAM d. Verify proper operation of charging pump speed controllers or take manual control of speed controllers to control PRZR level.

13 Restore Normal Alignment,:

a. Verify at least 2 CNMT recirc a. Start CNMT recirc fans as fans - RUNNING necessary (240 kw each).

b. Verify IA available: b. Dispatch AO to restore IA compressors as necessary (75 kw o Annunciator H-8, INSTRUMENT each).

AIR LO PRESS - EXTINGUISHED o Annunciator H-16, INSTRUMENT AIR COMPRESSOR - EXTINGUISHED

EOP: TITLE:

REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 9 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Power operation may continue if conditions required by Tech Spec section 3.7 are met.

14 Establish Normal Operation:

a. Verify circuit 76702 or 75112- a. Continue to monitor plant AVAILABLE conditions and go to Step 15.

b. Restore power to 12A and/or 12B bus (refer to ER-ELEC.1, RESTORATION OF OFFSITE POVER) 15 Establish Normal Plant Conditions:

i

a. Verify EH control in OPER PAN a. IF conditions requiring runback and IMP IN have cleared, THEN place EH in OPER PAN and IMP IN.

b. Verify steam dump controller, HC-484, in AUTO at 1005 psig

c. Verify annunciator G-15, STEAM c. IF Tavg within 6'F of Tref, THEN DUMP ARMED - EXTINGUISHED perform the following:

1) Ensure steam dump valves closed.

2) Reset steam dump.

d. Verify charging. pump speed d. Place charging pump speed control in AUTO control in AUTO if desired.

e. Verify Rod Control Selector e. Place Rod Control Selector Switch in AUTO Switch in AUTO if desired.

f. Go to Step 30

EOP: TITLE: REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 10 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: o Following RCP trip, a decrease in idle S/G level may occur. Also, swell may be anticipated in the operating S/G due to load pickup from the idle loop.

o Temperatures in the loop with the stopped RCP will not be indicative of true Tavg and bT values.

o Attempts to restore offsite power should continue. (Refer to ER-ELEC.l, RESTORATION OF OFFSITE POWER.)

16 Check S/G Feed Status:

a. Any main feed pump - RUNNING a. Perform the following:

1) Verify MDAFW pumps running as necessary.

2) Verify TDAFW pump running if necessary.

3) Ensure Rx power less than 2%.

b. Verify 39%

S/G levels - TRENDING TO '. Control feed flow as necessary to restore S/G level.

17 Check TDAFW Pump Status:

a. TDAFW pump - RUNNING a. Go to Step 18.

b. Check S/G status b. Go to Step 18.

o At least one S/G level-GREATER THAN 17%

-OR-o Both MDAFW pumps - OPERABLE

c. Pull stop TDAFW pump'steam supply valves

~ MOV-3504A

~ MOV-3505A

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REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE ll of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check Any RCP INNING Verify natural circulation. (Refer to Attachment NC.) IF natural circulation can NOT be verified, THEN increase dumping steam.

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EOP: TITLE:

REV 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 12 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION o OBSERVE D/G LOADING LIMITS OF 2300 KW FOR 1/2 HOUR, 2250 KW FOR 2 HOURS, AND 1950 KW FOR CONTINUOUS SERVICE.

o ANYTIME EMERGENCY D/GS ARE THE ONLY SOURCE OF AC POWER TO THE PLANT, PERSONNEL SHOULD BE ASSIGNED TO MAINTAIN SURVEILLANCE OF THE D/GS.

19 Restore Non-Safeguards Busses As Follows:

a. Close non-safeguards bus tie a. IF breaker can NOT be closed, breakers for affected bus(ses): THEN notify electricians.

~ Bus 13 to bus 14 tie

~ Bus 15 to bus 16 tie

b. Before energizing affected MCC(s) place the associated pumps in PULL STOP:

o MCC A

~ EH pump A

~ Turning gear oil pump

~ HP seal oil backup pump o MCCB

~ EH pump B

c. Restore power to.affected MCC(s): c. IF any breaker can NOT be closed, THEN notify electricians.

~ A from bus 13

~ B from bus 15

~ E from bus 15

~ F from bus 15

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

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EOP: TITLE: REV 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 13 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 20 Establish IA:

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a. Verify 2 IA compressors - RUNNING a. Dispatch an AO to reset and start IA compressors as D/G loading permits (75 kw each).

b. Check IA supply b. IR IA can NOT be established, THEN refer to AP-IA.l, LOSS OR o Pressure - GREATER THAN INSTRUMENT AIR.

60 PSIG o Pressure - STABLE OR INCREASING 21 Verify Instrument Bus 1D- Energize MCC B. IR MCC B NOT ENERGIZED available, THEN perform the following:

a. Verify MCC A energized.

=

b. Place instrument bus D on maintenance supply.

22 Establish Normal Charging Flow:

a. Verify 2 charging pumps - RUNNING a. Start charging pumps as necessary (75 kw each).

b. Adjust charging pump speed and HCV-142 as necessary to restore PRZR level=and labyrinth seal D/P

EOP: TITLE: REV: 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 14 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Check CVCS Letdown:

a. Normal letdown in service: a. Perform the following:

o Letdown flow - APPROXIMATELY 1) Place AOV-427 switch to CLOSE 40 GPM

2) Place letdown orifice o Letdown flow - STABLE isolation valves to CLOSE.

o Letdown pressure- 3) Go to Step 24.

APPROXIMATELY 250 PSIG

b. Go to Step 26 24 THAN 13'ontinue Check PRZR Level GREATER with Step 27.

level greater than Steps 25 and 26.

MHEN PRZR 13%, THEN do

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EOP: TITLE:

REV: 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 15 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 25 Establish Normal Letdown: Establish Excess Letdown:

a. Establish charging line flow to a. Place excess letdown divert REGEN Hx - GREATER THAN 20 GPM. valve, AOV-312, to NORMAL

b. Verify the following switches in b. Ensure CCV from excess letdown CLOSE: open, AOV-745

~ Letdown orifice valve c. Ensure RCP seal return isolation (AOV-200A, AOV-200B, and valve open, MOV-313 AOV-202)

~ .Loop B cold leg to REGEN Hx d. Open excess letdown isolation AOV-427 valve, AOV-310

c. Place letdown controllers in e. Slowly open HCV-123 to maintain MANUAL at 25X open. excess letdown temperature less than 195'F and pressure less

~ TCV-130 than 100 psig

~ PCV-135

d. Open AOV-427.

e. Open letdown orifice valves as necessary.

f. Place TCV-130 in AUTO at 105'F.

g. Place PCV-135 in AUTO at 250 psig.

h. Adjust charging pump speed and HCV-142 as necessary.

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EOP: T!TLE:

REV 7 AP-ELEC.1 'OSS OF 12A AND/OR 12B TRANSFORMER PAGE 16 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION o OBSERVE D/G LOADING LIMITS OF 2300 KW FOR 1/2 HOUR, 2250 KV FOR 2 HOURS, AND 1950 KV FOR CONTINUOUS SERVICE.

o ANYTIME EMERGENCY D/GS ARE THE ONLY SOURCE OF AC POWER TO THE PLANT, PERSONNEL SHOULD BE ASSIGNED TO MAINTAIN SURVEILLANCE OF THE D/GS.

26 Verify PRZR Heaters Restored: Perform the following:

o PRZR proportional heater breaker a. Verify adequate D/G capacity

- CLOSED available for PRZR heaters (400 kw each bank). I o PRZR backup heater breaker-RESET/IN AUTO b. Reset and close PRZR proportional heater br'eaker if necessary.

c. Reset PRZR backup heater breaker and return to AUTO if necessary.

IF on natural, circulation and at least 100 kw of PRZR heaters can NOT be restored within" 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, THEN be on RHR within an additional 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. (Refer to Technical Specification 3.1.1.5)

J EOP: TITLE:

REV 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 17 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 Establish Stable Plant Conditions:

a. Tavg - TRENDING TO TREF a. Insert control rods or, if necessary, decrease turbine load to match Tavg to Tref.

b. PRZR pressure - TRENDING TO b. Verify proper operation of PRZR 2235 PSIG heaters and spray or take manual control of PC-431K.

c. PRZR level - TRENDING TO PROGRAM c. Verify proper operation of charging pump speed controllers or take manual control of speed controllers to control PRZR level.

28 Verify Both S/G Levels Control feed flov as necessary to GREATER THAN 25~o restore both S/G levels greater than 25%.

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REV: 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 18 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

CAUTION OBSERVE D/G LOADING LIMITS OF 2300 KW FOR 1/2 HOUR, 2250 KW FOR 2 HOURS, AND 1950 KW FOR CONTINUOUS SERVICE.

NOTE: Evaluate conditions to determine if turbine should be placed on turning gear.

29 Establish Normal Shutdown Alignment:

a. Start turning gear oil pump a. Verify DC emergency oil pump (42 kw) and verify pump - RUNNING running and break vacuum to accelerate turbine coastdown.

Continue with Step 29c. WHEN shaft stops, THEN stop DC emergency oil pump.

b. Stop DC emergency oil pump

c. Verify adequate Rx head cooling:

1) Verify at least one control 1) Manually start one fan as rod shroud fan - RUNNING power supply permits (45 kw).

2) Verify one Rx compartment 2) Manually start one fan as cooling fan - RUNNING power supply permits (23 kw).

d. Dispatch AO to start waste gas compressor as necessary

e. Start main transformer cooling fans as necessary

f. Start CNMT recirc fans as necessary (240 kw each)

g. Verify radiation monitoring g. Reset radiation monitors and system operating as required restart ventilation systems as necessary.

h. Verify motor fire pump breaker- h. Close motor fire pump breaker.

CLOSED

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EOP: TiTLE: REV' AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 19 of 19 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 WHEN Conditions Permit:, THEN Restore Offsite'ower (Refer to ER ELEC ~ 1 I RESTORATION OF OFFSITE POWER) 31 Notify Higher Supervision

/

NOTE: Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.

32 Return To Procedure Or Guidance In Effect

-END-

t EOP:

REV: 7 AP-ELEC.1 LOSS OF 12A AND/OR 12B TRANSFORMER PAGE 1 of 1, AP-ELEC. 1 APPENDIX LIST "TITLE PAGES

1) FIGURE MIN SUBCOOLING

2) ATTACHMENT NC

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EOP: T!TLE: REV: 7 AP-ELEC. 1 LOSS OF 12A AND/OR 12B TRANSFORMER 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 SUB COOLED 1300 REGION 1200 1100 1000 900

=800 INADEQUATE 700 SUBCOOLING 600 ADVERSE CNMT REGION 500 400 300 200 NORMAL CNMT TEMPERATURE INCREMENTS 10'F 100 0

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