ML17264A975

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Rev 14 to AP-ELEC.1, Loss of 12A & 12B Busses.
ML17264A975
Person / Time
Site: Ginna Constellation icon.png
Issue date: 08/05/1997
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A976 List:
References
AP-ELEC.1, NUDOCS 9708130116
Download: ML17264A975 (60)
v • d • e


Text

EOP: TITLE:

REV 14 P-ELEC.1 LOSS OF 12A AND/OR 12B- BUSSES PAGE 1 of 22 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER RESPONSIBLE AGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

q708i30iih 970805 05000244 PDR ADOCK F PDR

EOP:

REV: 14 P-ELEC.1 LOSS OF 12A AND/OR 12B BUSSES PAGE 2 of 22 A. PURPOSE - This procedure provides actions to respond to a loss of 12A and/or 12B Busses from HSD or at power conditions.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure may be entered from:
a. AP-TURB.2, TURBINE LOAD REJECTION, when busses 12A and/or 12B are found to be deenergized.
2. SYMPTOMS The symptoms of loss of g12A 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.

EOP: T!TLE REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 3 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF, AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.

o IF'CS TEMPERATURE IS < 350'F, THEN AP-ELEC.3, LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW 350'F) SHOULD BE PERFORMED.

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

o IF ANY RADIOACTIVE RELEASE IN PROGRESS, THEN IT SHOULD BE TERMINATED UNTIL SUPPORT CONDITIONS ARE EVALUATED.

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 DO NOT ATTEMPT TO ENERGIZE A BUS THAT IS POTENTIALLY FAULTED.

NOTE: o Conditions should be evaluated for site contingency reporting (Refer to EPIP-1.0, GINNA STATION EVENT EVALUATION AND CLASSIFICATION).

o AP-ELEC.14/16, LOSS OF SAFEGUARDS BUS 14/16 AND AP-ELEC.17/18, LOSS OF SAFEGUARDS BUS 17/18 provide additional guidance for the loss of safeguards busses.

1 Establish Manual Rod Control a, Place Rod Control Bank Selector Switch to MANUAL

b. Verify control rod motion stops b. Manually trip the reactor and go to E-O, REACTOR TRIP OR SAFETY INJECTION.
c. Manually move control rods as necessary

EOP:

REV: 14 P-ELEC.l LOSS OF 12A AND/OR 12B BUSSES PAGE 4 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 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 3 Verify Both Trains Of AC Try to restore power to all AC Emergency Busses Energized To emergency busses. IF power can NOT At Least 420 VOLTS: be restored to at least one train, THEN refer to ECA-O.O, LOSS OF ALL o Bus 14 and bus 18 AC POWER, Step 1.

o Bus 16 and bus 17 4 Verify Service Water System Operation:

a. SW pumps - AT LEAST ONE RUNNING a. Verify selected SW pumps start IN EACH LOOP on a timer (40 sec) after D/G start. IF NOT, THEN manually start pumps as naaassary (258 ku each),
b. SW header pressure - GREATER b. Manually align valves as THAN 40 PSIG IN EACH LOOP . necessary.

5 Check CCW Pump Status:

a. At least one CCW pump - RUNNING a. Start one CCW pump (124 kw).
b. Annunciator A-22, CCW PUMP b, Start second CCW pump (124 kw).

DISCHARGE LO PRESS 60,PSIG EXTINGUISHED

EOP:

REV'4 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 5 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

'6 Verify Bus 11A And 11B Normal IF turbine trip has occurred from Feed Breakers CLOSED power less than 50%, THEN go to AP-TURB.1, TURBINE TRIP WITHOUT RX TRIP REQUIRED, Step l.

IF turbine stop valves open, THEN trip turbine and go to AP-TURB.1, TURBINE TRIP WITHOUT RX TRIP REQUIRED, Step 1.

IF turbine NOT previously latched, THEN perform the following:

a. Ensure reactor power less than 8a.
b. Go to Step 16.

7 Verify Annunciator H-16, Dispatch AO to locally reset and INSTRUMENT AIR COMP start IA compressors as necessary.

EXTINGUISHED 8 Monitor S/G Level Control: Place MFW regulating valves in MANUAL and control feed flow as o S/G level - TRENDING TO 52% necessary.

o MFW regulating valves CONTROLLING IN AUTO

EOP: TlTLE REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 6 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: When restarting equipment for recovery, it is preferable to start equipment on busses being supplied from offsite power, if possible.

9 Check CVCS Operation:

a. Charging pumps - AT LEAST ONE a. Perforln the following:

RUNNING

1) Close loop B cold leg to REGEN Hx, AOV-427.

2)'tart charging pumps as necessary.

3) Establish greater than 20 gpm charging line flow.

Check letdown indications: b. Perform the following:

o Check PRZR level - GREATER 1) Close loop B cold leg to THAN 13% REGEN Hx, AOV-427.

o Letdown flow - APPROXIMATELY 2) Close letdown orifice valves 40 GPM (AOV-200A, AOV-200B, and AOV-202) o Letdown flow - STABLE

3) IF PRZR level greater than 13%, THEN go to Step 10. IF NOT, THEN continue with Step 12. WHEN PRZR level greater than 13$ , THEN do Steps 10 and 11.
c. Adjust charging pump speed and HCV-142 as necessary to restore PRZR level and labyrinth seal D/P
d. Go to Step ll

EOP: TITLE:

REV'4 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 7 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Steps 10 and 11 may be performed concurrently.

10 Establish Normal Letdown: Perform the following steps in sequence to establish excess

a. Establish charging line flow to letdown:

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

b. Verify the following switches in valve, AOV-312, to NORMAL CLOSE:

o Ensure CCW from excess letdown

~ Letdown orifice valve open, AOV-745 (AOV-200A, AOV-200B, and AOV-202) o Ensure RCP seal return isolation

~ Loop B cold leg to REGEN Hx valve open, MOV-313 AOV-427 o Open excess letdown isolation

c. Place letdown controllers in valve, AOV-310 MANUAL at 40% open o Slowly open HCV-123 to maintain

~ TCV-130 excess letdown temperature less

~ PCV-135 than 195'F and pressure less than 100 psig

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

EOP: 71TLE:

REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 8 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Verify PRZR Heaters Restored: IF adequate D/G capacity available for PRZR heaters (400 kw each o PRZR proportional heater breaker bank), THEN perform the following:

CLOSED

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

r IF adequate D/G capacity NOT available, THEN refer to ER-PRZR.1.

12 Verify Normal Rod Control Restored:

a. Annunciator C-5, PPCS ROD a. Go to AP-RCC.2, RCC/RPI SEQUENCE OR ROD DEVIATION MALFUNCTION.

EXTINGUISHED

b. Annunciator E-28, POWER RANGE b. Perform the following:

ROD DROP ROD STOP - EXTINGUISHED

1) Place rod control bank selector switch in MANUAL.
2) Reset NIS rod drop rod stop signals (at NIS racks) as necessary,
c. Annunciator F-15, RCS TAVG DEV c. Go to step 13.

4'F - EXTINGUISHED

d. Place rod control bank selector switch in AUTO if desired

EOP: TITLE:

REV: 14 P-ELEC. 1 LOSS OF 12A'ND/OR 12B BUSSES PAGE 9 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Establish Stable Plant Conditions:

a. Check Tavg - TRENDING TO TREF a. Insert control rods or, if necessary, decrease turbine load to match Tavg to Tref.
b. Check PRZR pressure - TRENDING b. Verify proper operation of PRZR TO 2235 PSIG heaters and spray or take manual control of PRZR pressure controller 431K.
c. Check PRZR level - TRENDING TO c. Verify proper operation of PROGRAM charging pump speed controllers or take manual control of speed controllers to control PRZR level.

NOTE: Power operation 3.8 are met.

may continue if conditions required by ITS section 14 Restore Normal Electric System Alignment:

a. Verify circuit 767 and/or 751- a. Continue with Step 15. WHEN AVAILABLE offsite power available, THEN do Steps 14b, c and d.
b. Restore power to 12A and/or 12B bus (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER)
c. Verify all emergency AC bus c. Restore emergency AC busses to normal feed breakers - CLOSED normal power supply (Refer to ER-ELEC.1, RESTORATION OF

~ Bus 14 OFFSITE POWER)

~ Bus 16

~ Bus 17

~ Bus 18

d. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP)

EOP:

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 10 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Establish Normal Plant Conditions:

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. Ensure steam dump controller, HC-484, in AUTO at 1005 psig
c. Verify annunciator G-15, STEAM c. IF Tavg within 5'F of Tref, THEN DUMP ARMED - EXTINGUISHED perform the following:
1) Ensure steam dump valves closed.
2) Reset steam dump.
d. Verify 2 charging pumps - RUNNING d. Perform the following:
1) Manually start charging pumps as necessary.
2) Place selected charging pump speed controller in AUTO desired.

if

e. Verify Rod Control Selector e. Place Rod Control Selector Switch in AUTO Switch in AUTO if desired,
f. Go to Step 29

EN>:

REV'4 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 11 of 22 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 froIn the idle loop.

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

o If only one RCP is operating, refer to AP-RCS.2, LOSS OF REACTOR COOLANT FLOW.

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

16 Check Secondary Heat Sink Status:

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

l) Verify MDAFW pumps running as necessary.

2) Verify TDAFW necessary.

pump running if

3) Ensure Rx power less than 2S.
b. Verify S/G levels - TRENDING TO b. Control feed flow as necessary 52% to restore S/G level.

4 TITLE:

REV'4 P-ELEC.1 LOSS OF 12A AND/OR 12B BUSSES PAGE 12 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check TDAFW- Pump Status:

a. TDAFV 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 18 Check Any RCP RUNNING Verify natural circulation. (Refer to Attachment NC.) IF natural" circulation can NOT be verified, THEN increase dumping steam.

19 Establish Condenser Steam Dump Pressure Control:.

a. Verify condenser available: a. Perform the following:

o Any MSIV - OPEN 1) Place S/G ARV controllers in AUTO at 1005 psig and verify o Annunciator G-15, STEAM DUMP proper operation. IF S/G ARMED - LIT ARVs NOT controlling in AUTO, THEN control S/G ARVs manually.

2) Go to Step 20.
b. Adjust condenser steam dump controller HC-484 to 1005 psig in AUTO
c. Place steam dump mode selector switch to MANUAL

EOP: T1TLE:

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 13 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 20 Restore Non-Safeguards Busses As Follows:

a. Verify Bus 13 and 15 - ENERGIZED a. IF offsite power available, THEN attempt to restore offsite power and normal feed to Bus 13/15 (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).
1) IF offsite power is NOT available, THEN perform the following:

o Close Bus 13 to Bus 14 tie breaker o Close Bus 15 to Bus 16 tie breaker

b. Verify MCC A - ENERGIZED b. Perform the following:
1) Ensure the following pumps in PULL STOP:

~ EH pump A

~ Turning gear oil.pump

~ HP seal oil backup pump

2) Close MCC A supply breaker from bus 13.
c. Verify MCC B - ENERGIZED c. Perform the following:
1) Ensure EH pump B in PULL STOP.
2) Close MCC B supply breaker from bus 15.
d. Verify annunciator J-8, 480V MCC d. Restore power to other MCCs as SUPPLY BREAKER TRIP D/G loading permits.

EXTINGUISHED

e. Reset control room necessary lighting if
f. Reset MAIN XFMR AUX PWR SUPPLY breakers as necessary

~ Bus 13

~ Bus 15

EOP:

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 14 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: When restarting equipment for recovery, it is preferable to start equipment on busses being supplied from offsite power, if possible.

21 Check IA System:

a. Verify at least 2 air a. Manually start air compressors compressors - RUNNING as necessary (75 kw each).
b. Check IA supply b. Dispatch an AO to locally reset and start IA compressors (75 kw o Pressure - GREATER THAN each).

60 PSIG IF IA can NOT be established, o Pressure - STABLE OR THEN refer to AP-IA.1, LOSS OF INCREASING, INSTRUMENT AIR.

22 Verify Instrument Bus D- Energize MCC B. IF MCC B NOT ENERGIZED available, THEN perform the following:

a. Verify MCC A energized.
b. Place instrument bus D on maintenance supply.

EOP $ TITLE$

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 15 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Check CVCS Operation:

a. Charging pumps - AT LEAST ONE a. Perform the following:

RUNNING

1) Close loop B cold leg to REGEN Hx, AOV-427.
2) Start charging pumps as necessary.
3) Establish greater than 20 gpm charging line flow.

b, Check letdown indications: b. Perform the following:

o Check PRZR level - GREATER 1) Close loop B cold leg to THAN 13% REGEN Hx, AOV-427.

o Letdown flow - APPROXIMATELY 2) Close letdown orifice valves 40 GPM (AOV-200A, AOV-200B, and AOV-202) o Letdown flow - STABLE

3) IF PRZR level greater than 13%, THEN go to Step 24. IF NOT, THEN continue with Step 26. WHEN PRZR level greater than 13%, THEN do Steps 24 and 25.
c. Adjust charging pump speed and HCV-142 as necessary to restore PRZR level and labyrinth seal D/P
d. Go to Step 25

EOP: TITLE:

REV: 14 P-ELEC.1 LOSS OF 12A AND/OR 12B BUSSES PAGE 16 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Steps 24 and 25 may be performed concurrently.

24 Establish Normal Letdown: Perform the following steps in sequence to establish excess

a. Establish charging line flow to letdown:

REGEN Hx - GREATER THAN 20 GPM.

o Place excess letdown divert

b. Verify the following switches in valve, AOV-312, to NORMAL CLOSE' o Ensure CCW from excess letdown Letdown orifice valve open, AOV-745 (AOV-200A, AOV-200B, and AOV-202) o Ensure RCP seal return isolation

~ Loop B cold leg to REGEN Hx valve open, MOV-313 AOV-427 o Open excess letdown isolation

c. Place letdown controllers in valve, AOV-310 MANUAL at 40% open o Slowly open HCV-123 to maintain

~ TCV-130 excess letdown temperature less

~ PCV-135 than 195'F and pressure less than 100 psig

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.

EOP: TITLE:

REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 17 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 25 Verify PRZR Heaters Restored: IF adequate D/G capacity available for PRZR heaters (400 kw each o PRZR proportional heater breaker bank), THEN perform the following:

CLOSED

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

IF adequate D/G capacity NOT available, THEN refer to ER-PRZR.1.

26 Establish Stable Plant Conditions:

a. Check Rx power -= LESS THAN a. Ensure rod control bank selector 2.5x10 6 AMPS in MANUAL and insert rods to reduce Rx power as necessary.
b. Check PRZR pressure - TRENDING b. Verify proper operation of PRZR TO 2235 PSIG- heaters and spray or take manual control of PRZR pressure controller 431K,
c. Verify 2 charging pumps - RUNNING c. Perform the following:
1) Manually start charging pumps as necessary.
2) Place selected charging pump speed controller in AUTO if desired.
d. Check PRZR level - between 35% d. Control charging as necessary.

and 40%

e. Check S/G levels -'RENDING TO e. Control feed flow as necessary 52% to restore both S/G levels to 52%.
f. Check RCS Tavg - GREATER THAN f. Cont'rol dumping steam as 540'F necessary. IF cooldown continues, THEN close both MSIVs.

EOP:

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 18 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION 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.

27 Restore Normal Electric System Alignment:

a. Verify circuit 767 and/or 751 a. Continue with Step 28; WHEN AVAILABLE offsite power available, THEN do Steps 27b, c and d.
b. Restore power to 12A and/or 12B bus if necessary (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER)
c. Verify all emergency AC bus c. Restore emergency AC busses to normal feed breakers - CLOSED normal power supply (Refer to ER-ELEC.1, RESTORATION OF

~ Bus 14 OFFSITE POWER)

~ Bus 16

~ Bus 17

~ Bus 18

d. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP)

t' 0

EOP:

REV 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 19 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Evaluate conditions to determine turning gear, if turbine should be placed on 28 Establish Normal Shutdown Alignment:

a. Verify turning gear oil pump- a. Perform the following:

RUNNING

1) Manually start turning gear oil pump (42 kw).
2) Break vacuum to accelerate turbine coastdown.
3) Continue with Step 28b. WHEN shaft stops, THEN dispatch AO to place turbine on turning gear.

'b. Verify adequate Rx head cooling:

l) Verify at least one control l) 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).
c. Dispatch AO to start waste gas compressor as necessary
d. Dispatch AO to restore SFP cooling as necessary

EOP:

REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 20 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 29 Check Status Of DC System Loads:

a. Verify turb emergency DC lube a. Manually stop emergency DC lube oil pump - OFF oil pump.
b. Verify TDAFV pump DC oil pump- b. Perform the following:

OFF IN AUTO

1) Ensure TDAFV AC oil pump running.
2) Stop TDAFV pump DC oil pump.
c. Verify both MFW pump DC oil c. Perform the following:

pumps - OFF

1) Ensure associated MFV pump AC oil pump running.
2) Stop MFW pump DC oil pump and place in AUTO

EOP: TITLE:

REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 21 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Restore Equipment Alignment:

a. Verify at least 2 CNMT recirc a. Start CNMT recirc fans as fans - RUNNING necessary (240 kw each).
b. Check CCW pumps - ONLY ONE b. IF two CCW pumps running, THEN RUNNING manually stop one pump.
c. Check radiation monitoring c. Restore sample pumps and systems: radiation monitors as necessary.

o CNMT vent sample pump-RUNNING o Plant vent sample pump-RUNNING o All area and process monitors operating as required

d. Dispatch AO to verify proper operation of seal oil system
e. Verify motor fire pump breaker- e. Close motor fire pump breaker.

CLOSED

f. Verify annunciator L-l, AUX BLDG f. IF bus 11A or 11B energized, VENT SYSTEM CONTROL PANEL- THEN dispatch AO to restore AUX EXTINGUISHED BLDG ventilation (Refer to T-35A, AUX AND INTERMEDIATE BUILDING VENTILATION STARTUP AND SHUTDOWN)
g. Verify service air compressor- g. Dispatch AO to locally start RUNNING service air compressor.
h. Verify MCC G - ENERGIZED h. Manually close breaker.
i. Check control board annunciator i. Perform alarm response panels'-- ADLRM STATUS VALID FOR procedures for unexpected alarms.

PLANT CONDITIONS

j. Verify control board valve ), Manually align valves as alignment - NORMAL (Refer to necessary.

0-6.13, DAILY SURVEILLANCE LOG)

EOP:

REV: 14 P-ELEC. 1 LOSS OF 12A AND/OR 12B BUSSES PAGE 22 of 22 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 31 Reset UV Relay Targets On Undervoltage Cabinets

~ Bus 14 Bus 16

~ Bus 17

~ Bus 18 NOTE: Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.

32 Notify Higher Supervision 33 Return To Procedure Or Guidance In Effect

-END-

EOP:

REV: 14 P-ELEC.1 LOSS OF 12A AND/OR 12B BUSSES PAGE 1 of 1 AP-ELEC. 1 APPENDIX LIST TITLE PAGES

1) FIGURE MIN SUBCOOLING
2) ATTACHMENT NC
3) ATTACHMENT D/G STOP

EOP: TITLE:

REV 14 P-ELEC.1 LOSS OF 12A AND/OR 12B BUSSES 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 INCREHENTS 20 PSIG 2200 2100 2000 1900 1800 1700; 1600 1500 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 700 INADEQUATE SUBCOOLING 600 REGION ADVERSE CNHT 500 400 300 200 NORHAL CNHT TEHPERATURE INCREHENTS 10'F 100 0

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

0

EOP: TITLE:

LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 1 of 20 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER ~5 RESPONSIBLE AGER EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

EOP: TITLE:

LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC.3 350'F) PAGE 2 of 20 A. PURPOSE This procedure provides actions to respond to a loss of 12A or 12B SS Transformer when RCS temperature is less than 350'F.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure may be entered from:
a. AP-ELEC.1, LOSS OF 12A AND/OR 12B BUSSES, when busses 12A and/or 12B are found to be deenergized and RCS temperature is less than 350'F.
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.

EOP: TITLE:

LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC.3 350'F) PAGE 3 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o 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.

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.

o IF ANY RADIOACTIVE RELEASE IN PROGRESS, THEN IT SHOULD BE TERMINATED UNTIL SUPPORT CONDITIONS ARE EVALUATED.

NOTE: Conditions should be evaluated for site contingency reporting (Refer to EPIP-1.0, GINNA STATION EVENT EVALUATION AND CLASSIFICATION).

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 emergency busses. IF power can NOT At Least 420 VOLTS: be restored to at least one train, THEN refer to ECA-O.O, LOSS OF ALL o Bus 14 and bus 18 AC POWER.

o Bus 16 and bus 17

EOP: T!jLE:

LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV' P-ELEC.3 350'F) PAGE 4 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: When restarting equipment for recovery, it is preferable to start equipment on busses being supplied from offsite power, if possible.

3 Verify Service Water System Operation:

a. SW pumps - AT LEAST ONE RUNNING a. Verify selected SW pumps start IN EACH LOOP on a timer (40 sec) after D/G start. IF NOT, THEN manually start pumps as conditions permit (258 kw each).
b. SW header pressure - GREATER b. Manually align valves as THAN 40 PSIG IN EACH LOOP necessary.

4 Check CCW Pump Status:

a. At least one CCW pump - RUNNING a. Start one CCW pump (124 kw).
b. Annunciator A-22, CCW PUMP b. Start second CCW pump (124 kw).

DISCHARGE LO PRESS 60 PSIG EXTINGUISHED

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC. 3 350'F) of PAGE 5 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check RCS Temperature STABLE IF RCS temperature increasing, THEN stabilize temperature using available method.

~ RHR normal cooling

~ Dump steam and feed

~ Blowdown and feed IF RCS temperature decreasing, THEN perform the following:

a. Stop dumping steam or control RHR normal cooling.
b. IF cooldown continues, THEN perform the following:

l) IF either MDAFW pump operable, THEN ensure TDAFW pump steam supply valves in PULL STOP.

2) WHEN S/G level greater than 5% in one S/G, THEN limit feed flow to that required to maintain S/G level.

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC.3 350'F)

PAGE 6 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE,NOT OBTAINED CAUTION IF REFUELING IN PROGRESS, THEN STOP REFUELING OPERATIONS (NOTIFY REFUELING SRO).

6 Restore Non-Safeguards Busses As Follows:

a. Verify non-safeguards busses- a. Close non-safeguards bus tie ENERGIZED breaker for affected bus(ses) possible:

if

~ Bus 13

~ Bus 15 ~ Bus 13 to bus 14 tie

~ Bus 15 to bus 16 tie

b. Verify MCC 'A - ENERGIZED b. Perform the following;
1) Ensure the following pumps in PULL STOP:

~ EH pump A

~ Turning gear oil pump

~ HP seal oil backup pump

2) Close MCC A supply breaker from bus 13;
c. Verify MCC B  ; ENERGIZED c. Perform the following:
1) Ensure EH pump B in PULL STOP.
2) Close MCC B supply breaker from bus 15.
d. Check CNMT vent sample 'pump- d. IF CNMT purge or mini-purge in RUNNING progress, THEN secure purging.
e. Verify annunciator J-8, 480V MCC e. Restore power to other MCCs as SUPPLY BREAKER TRIP D/G loading permits.

EXTINGUISHED

~ MCC E

~ MCC F

~ MCC G

f. Reset control room necessary lighting if

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV' P-ELEC.3 350'F)

PAGE 7 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check IA System:

a. Verify at least 2 air a. Manually start air compressors compressors - RUNNING as necessary (75 kw each).
b. Check IA supply b. Dispatch an AO to locally reset and start air compressors as o Pressure - GREATER THAN necessary (75 kw each).

60 PSIG IF IA can NOT be established, o Pressure - STABLE OR THEN refer to AP-IA.l, LOSS OF INCREASING INSTRUMENT AIR.

8 Check RCS Cooling:

a. RHR system - PREVIOUSLY ALIGNED a. Go to Step 18.

FOR RHR NORMAL COOLING

b. Check RHR pumps - ANY RUNNING b. IF RHR normal cooling previously in service, THEN go to Step 9.

IF RHR normal cooling NOT required, THEN go to Step 18.

c. Go to Step 11

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC. 3 350'F) PAGE 8 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Establish Conditions To Start RHR'ump:

a. Any RHR pump - AVAILABLE a. IF RCS level greater than 64 inches, THEN go to AP-RHR.l, LOSS OF RHR. IF NOT, THEN go to AP-RHR.2, LOSS OF RHR.WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS.
b. Verify CCW cooling to RHR system b. Perform the following:

in service

- AT LEAST ONE l) Ensure at least one CCW pump o CCW pumps running.

RUNNING

2) Open MOV-738A and MOV-738B as o CCW to RHR Hxs, MOV-738A AND necessary.

MOV-738B - OPEN AS NECESSARY IF CCW can NOT be restored, THEN continue attempts to restore CCW (Refer to AP-CCW.3, LOSS OF CCW PLANT SHUTDOWN).

c. Place RHR Hx bypass valve, HCV-626, to MANUAL and close valve

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 9 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o STARTING AN RHR PUMP MAY RESULT IN AN RCS LEVEL OR PRESSURE DECREASE DUE TO SHRINK OR VOID COLLAPSE o THE RHR HX OUTLET VALVES (HCV-624 AND HCV-625) WILL FAIL OPEN ON LOSS OF INSTRUMENT AIR PRESSURE.

10'Restore RHR Flow:

a. Start one RHR pump
b. At least one RHR pump - RUNNING b. Go to Step 10d.
c. Establish RHR flow - WITHIN c. Manually adjust RHR flow as LIMITS OF TABLE BELOW necessary.

B LOOP LEVEL RHR FLOW 100 - 70 inches < 3000 gpm

< 70 - 30 inches 1400 gpm

< 30 - 16 inches 5 1000 gpm

< 16 - 10 inches 800 gpm

< 10 - 6 inches 500 gpm

d. RHR flow - RESTORED d. IF RCS level greater than 64 inches, THEN go to AP-RHR.l, LOSS OF RHR. IF NOT, THEN go to AP-RHR.2, LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS.
e. Place RHR Hx bypass valve, HCV-626, controller in AUTO at desired flowrate This Step continued on the next page.

EOP: TITLE LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 10 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED (Step 10 continued from previous page)

f. Open RHR pump flow control valves as necessary to stabilize RCS temperature

~ HCV-624

~ HCV-625

g. Check core exit T/Cs, - STABLE OR g Start another RHR pump or DECREASING increase RHR flow to establish required RCS cooling. ,DO NOT exceed RHR flow limits from table above.

11 Check AFW Pump Status:

a. AFW pumps - ANY RUNNING a. Go to Step 12.
b. Both S/G levels - AT DESIRED b. Continue with Step 12. WHEN LEVEL desired S/G levels established, THEN do Step llc.
c. Stop running AFW pumps and place switches in PULL STOP 12 Evaluate RCS Conditions:
a. Check RCS status: a. IF RCS is open to atmosphere, THEN go to Step 17.

o RCS - CLOSED o RCS pressure - GREATER THAN ATMOSPHERIC

b. Verify RCP 81 seal D/Ps b. IF any RCP running with Cl seal GREATER THAN 220 PSID D/P less than 220 psid, THEN stop affected RCP.

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REV: 3 LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW P-ELEC.3 350'F) PAGE 11 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check Charging Pump Suction Aligned To VCT:

a. VCT level - GREATER THAN 20% 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 14. WHEN VCT level greater than 20%,

THEN do Step 13b.

b. Verify cha'rging pumps aligned to b. Manually align valves as VCT necessary.

o LCV-112C open o LCV-112B closed 14 Check Charging Pumps ANY IF charging pumps required, THEN CHARGING PUMP RUNNING perform the following:

a. Verify charging to loop B cold leg, AOV-294, open.
b. Verify charging. flow control valve, HCV-142, open as necessary.
c. IF desired, THEN place letdown pressure controller, PCV-135, in MANUAL.
d. Start one charging pump (75 kw each pump).
e. Increase charging pump speed and control PCV-135 as necessary to control PRZR pressure or level.

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV' P-ELEC. 3 350'F) PAGE 12 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Monitor RCS Pressure:

a. Pressure - LESS THAN 390 PSIG a. IF RCS is solid, THEN control charging and letdown pressure control valve (PCV-135) as necessary to stabilize RCS pressure.

IF PRZR bubble established, THEN operate normal or auxiliary spray to decrease pressure.

b. Pressure - STABLE b. Stabilize RCS pressure using appropriate means.

~ Charging

~ Letdown

~ PCV-135 (solid)

~ Normal spray

~ Auxiliary spray

~ PRZR heaters 16 Check PRZR Level:

a. Narrow range level - ON SCALE a. IF RCS is solid, THEN go to Step 17.
b. Level - TRENDING TO PROGRAM b. Adjust charging pump speed as necessary to control PRZR level.

17 Monitor RCS Temperature

a. Core exit T/Cs - STABLE OR a. Adjust RCS cooling as necessary DECREASING and return to Step 3.

~ S/G steaming

~ S/G feeding

~ RHR cooling

b. Go to Step 26

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC. 3 350'F) PAGE 13 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check AFW System Status:

a. Verify TDAFW pump steam supply a. IF S/Gs providing heat sink, valves in PULL STOP THEN perform the following:

l) Verify adequate MDAFW flow.

2) Pull stop TDAFW pump.
3) Adjust AFW flow as necessary to stabilize S/G level and RCS temperature.
b. Verify MDAFW pump crosstie b. Ensure at least one MDAFW pump valves closed off. IF two pumps required, THEN close both MDAFW pump

~ MOV-4000A crosstie valves.

174'tart

~ MOV-4000B 19 Check Any S/G. Level GREATER MDAFW pumps as necessary to THAN restore<<S/G level.

20 Check RCS Pressure GREATER Increase RCS pressure to greater THAN 300 PSIG than 300 psig. IF RCP @1 seal D/P can NOT be maintained greater than 220 psid, THEN trip any running RCP.

21 Check RCP Status ANY RCP Verify natural circulation (Refer RUNNING to Attachment NC). IF natural circulation NOT verified, THEN increase dumping steam,

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 14 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 Monitor RCS Temperature Control S/G ARVs to stabilize RCS STABLE OR DECREASING temperature. IF S/G ARVs do NOT provide adequate cooling, THEN perform the following:

a. Initiate S/G blowdown from both S/Gs.
b. Maintain both S/G levels stable by controlling AFW flow.

23 .Check CVCS Operation:

a. Charging pumps - AT LEAST ONE a. Perform the following:

RUNNING

1) Start charging pumps as necessary.
2) Establish greater than 20 gpm charging line flow.
b. Check letdown indications: b. Perform the following:

o Check PRZR level - GREATER 1) Close loop B cold leg to THAN 13% REGEN HxI AOV-427.

o Letdown flow - APPROXIMATELY 2) Close letdown orifice valves 40 GPM (AOV-200A, AOV-200B, and AOV-202) o Letdown flow - STABLE

3) IF PRZR level greater than 13%, THEN go to Step 24. IF NOT, THEN continue with Step 26. WHEN PRZR level greater than 13%, THEN do Steps 24 and 25.
c. Adjust charging pump speed and HCV-142 as necessary to restore PRZR level and labyrinth seal D/P
d. Go to Step 25

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 15 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Steps 24 and 25 may be performed concurrently.

24 Establish Normal Letdown: Perform the following steps in sequence to establish excess

a. Establish charging line flow to letdown:

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

b. Verify the following switches in valve, AOV-312, to NORMAL CLOSE '

o Ensure CCV from excess letdown Letdown orifice valve open, AOV-745 (AOV-200A, AOV-200B, and AOV-202) o Ensure RCP seal return isolation

~ Loop B cold leg to REGEN Hx valve open, MOV-313 AOV-427 o Open excess letdown isolation

c. Place letdown controllers in valve, AOV-310 MANUAL at 40% open o Slowly open HCV-123 to maintain

~ TCV-130 excess letdown temperature less

~ PCV-135 than 195'F and pressure less than 100 psig

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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REV4 3 P-ELEC. LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW 3

350'F)

PAGE 16 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 25 Verify PRZR Heaters Restored: IF PRZR heaters required, THEN perform the following:

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

RESET/IN AUTO

b. Reset and close PRZR proportional heater breaker nec'essary.

if

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

IF at least 100 kw of PRZR heaters can NOT be restored, THEN refer to ITS 3.4.9.

NOTE: Check ITS section 3.8 for limiting conditions for operation.

26 Restore Normal Electric System Alignment:

a. Verify circuit 767 and/or 751- a. Continue with Step 28. WHEN AVAILABLE offsite power available, THEN do Steps 26b, c, d and 27.
b. Restore power to 12A and/or 12B bus (Refer to ER-ELEC.1, RESTORATION OF OFFSITE 'POWER)
c. Verify all emergency AC bus c. Restore emergency AC busses to normal feed breakers - CLOSED normal power supply (Refer to ER-ELEC.1, RESTORATION OF

~ Bus 14 OFFSITE POWER)

~ Bus 16

~ Bus 17

~ Bus 18

d. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP)

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC.3 350'F)

PAGE 17 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 Check Started:

If An RCP Should Be

a. Check the following: a. Go to Step 28.

o Both RCPs - OFF o RCP operation -. DESIRED

~ b. RCS pressure - APPROXIMATELY b. Control PRZR heaters and/or 325 PSIG charging pump speed as necessary to restore RCS pressure.

c. Check PRZR level - LESS THAN 38% c. Verify S/G temperature (obtained locally in CNMT at S/G handhole) less tha'n RCS cold leg temperature. IF NOT, THEN go to Step 28.
d. Try to start an RCP d. IF an RCP can NOT be started, THEN continue to monitor natural
1) Establish conditions for circulation conditions (Refer to starting an RCP Attachment NC),.

a) Bus llA or 11B energized b) Refer to Attachment RCP START

2) Start one RCP 28 Check RCS Temperature Adjust RCS cooling as necessary.

STABLE OR DECREASING

~ S/G steaming

~ S/G feeding

~ RHR cooling

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV' P-ELEC.3 350'F)

PAGE 18 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 29 Establish Normal Shutdown Alignment:

a, Verify turning gear oil pump- a. IF turbine oil system operation RUNNING required, THEN perform the following:

1) Manually start turning gear oil pump (42 kw).
2) Dispatch AO to place turbine on turning gear if desired.
b. Verify main generator- b. Perform the following:

DEPRESSURIZED

1) Manually start the HP seal oil backup pump
2) Dispatch AO to locally perform the following:

o Verify proper operation of the seal oil system (Refer to T-34B, GENERATOR SEAL OIL SYSTEM NORMAL OPERATION).

o Ensure bearing drain vapor extractor running.

o Ensure main lube oil reservoir vapor extractor running.

c. Check RCS temperature - LESS c. Perform the following:

THAN 135'F

1) Ensure one Rx compartment cooling fan running (23 kw).
2) Ensure one control rod shroud fan running (45 kw).
d. Dispatch AO to start waste gas compressor as necessary

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV 3 P-ELEC. 3 350'F)

PAGE 19 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Restore Equipment Alignment:

a. Verify at least 1 CNMT recirc a. Start CNMT recirc fans as fan - RUNNING necessary (240 kw each).
b. Verify annunciator L-l, AUX BLDG b. IF bus llA or 11B energized, VENT SYSTEM CONTROL PANEL- THEN dispatch AO to restore AUX EXTINGUISHED BLDG ventillation (Refer to T-35A, AUX AND INTERMEDIATE BUILDING VENTILLATION STARTUP AND SHUTDOWN)
c. Check radiation monitoring c. Perform the following:

systems:

1) Restore sample pumps and o CNMT vent sample pump radiation monitors as RUNNING necessary.

o Plant vent sample 2) Restart or ifpurge pump CNMT RUNNING mini-purge desired.

o All area and process monitors operating as required

d. Verify service air compressor- d. Dispatch AO to locally start RUNNING service desired.

air compressor if P

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

CLOSED

f. Check control board annunciator f. Perform alarm response panels - ALARM STATUS VALID FOR procedures for unexpected alarms.

PLANT CONDITIONS

g. Verify control board valve g. Manually align valves as alignment - NORMAL (Refer to necessary.

0-6.13, DAILY SURVEILLANCE LOG)

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC. 3 350'F)

PAGE 20 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 31 Check Status Of DC System Loads:

a. Verify emergency DC lube oil a. Manually stop emergency DC lube pump - OFF oil pump,
b. Verify TDAFW pump DC oil pump- b. Perform the following:

OFF

1) Ensure TDAFW AC oil pump running.
2) Stop TDAFW pump DC oil pump.
c. Verify both MFW pump DC oil c. Stop MFW pump DC oil pumps.

pumps - OFF 32 Verify Offsite Power Continue attempts to restore RESTORED offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

33 Notify Higher Supervision NOTE: Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.

34 Return To Procedure Or Guidance .In Effect

-END-

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F) PAGE 1 of 1 AP-ELEC. 3 APPENDIX LIST TITLE PAGES

1) FIGURE MIN SUBCOOLING
2) ATTACHMENT RCP START
3) ATTACHMENT NC
4) ATTACHMENT D/G STOP

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LOSS OF 12A AND/OR 12B TRANSFORMER (BELOW REV: 3 P-ELEC.3 350'F)

PAGE 1 of 1 FIGURE 'MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below t'-] Core Exit T/C Indication RC S PRESSURE (PSIG) .

2500 2400 2300 RCS PRESSURE INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900

'00 700 INADEQUATE SUBCOOL ING 600 REGION ADVERS E CNM 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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