ML17262B175

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Rev 7 to Emergency Operating Procedure AP-RCP.1, RCP Seal Malfunction.
ML17262B175
Person / Time
Site: Ginna Constellation icon.png
Issue date: 02/05/1993
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262B174 List:
References
AP-RCP.1, NUDOCS 9302250218
Download: ML17262B175 (64)
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Text

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 1 of 8 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE ~ ~ 7-~>

PLANT SUPERINTENDENT 4-w-93 EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

9302250218 9302i2 r PDR ADOCK 05000244 p PDR

1 1

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 2 of 8 A. PURPOSE This procedure provides the instructions necessary to diagnose and to respond to a reactor coolant pump seal malfunction.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure is entered from:
a. E-3, STEAM GENERATOR TUBE RUPTURE, or
b. ES-1.1, SI TERMINATION, or
c. ES-1.2, POST LOCA COOLDOWN AND DEPRESSURIZATION, or
d. ECA-0.1, LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED, or :
e. ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF BOTH STEAM GENERATORS, or
f. ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT-SUBCOOLED RECOVERY DESIRED, or g ECA 3 ~ 2 g SGTR WITH LOSS OF REACTOR COOLANT SATURATED g RECOVERY DESIRED, or
h. ECA-3.3, SGTR WITHOUT PRESSURIZER PRESSURE CONTROL, or
i. FR-I.1, RESPONSE TO HIGH PRESSURIZER LEVEL, when RCP seal malfunction is indicated.
2. SYMPTOMS The symptoms of RCP SEAL MALFUNCTION are;
a. Annunciator B-17(18), RCP A(B) No.1 SEAL HI-LO FLOW 5.5 GPM 0.25 , lit, or I
b. Annunciator B-9(10), RCP A(B) LABYR SEAL LO DIFF PRESS 15" H20, lit, or
c. Annunciator B-3(4), RCP A(B) STAND PIPE HI LEVEL + 1 FT, lit, or Continued on next page

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 3 of 8

2. SYMPTOMS (cont)
d. Annunciator B-11(12), RCP A(B) STAND PIPE LO LEVEL -4 FT, lit, or
e. Annunciator B-25(26), RCP A(B) No. 1 SEAL LO DIFF PRESS 220 PSID, lit, or
f. Annunciator B-l(2), RCP A(B) No. 1 SEAL OUT HI TEMP 200'F, lit, or,
g. Annunciator A-7(15), RCP A(B) CCW RETURN HIGH TEMP OR LOW FLOW, lit.

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REV: 7 AP-RCP-1 RCP SEAL MALFUNCTION PAGE 4 of 8 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF AT ANY TIME DURING THIS PROCEDURE A REACTOR TRI P OR

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REACTOR TRIP OR SAFETY INJECTION; SHALL BE PERFORMED.

NOTE: Step 1 is an immediate action step.

O 1 Check RCP 41 Seal o

Indications:(

¹1 seal leakoff flows - LESS IF any by THEN MORE RCP ¹1 seal failure verified THAN ONE indication, perform the following:

THAN 5.5 GPM

a. Close affected RCP(s) ¹1 seal o ¹1 seal outlet temperatures- discharge valve.

LESS THAN 215'F

~ RCP A, AOV-270A o ¹1 seal D/Ps - GREATER THAN ~ RCP B, AOV-270B 220 PSID

b. IF reactor trip breakers closed, o ¹1 seal leakoff flows - GREATER THEN trip the reactor.

THAN 0.25 GPM

c. Trip the affected RCP(s).
d. IF reactor trip was required, THEN go to E-O, REACTOR TRIP or SAFETY INJECTION. IF NOT, THEN go to Step 3,

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTXON PAGE 5 of 8 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2 Check RCP Seal Return Valve Alignment:

a. RCP seal return isolation valve, a. Perform the following:

MOV-313, - OPEN

1) Ensure CI reset.
2) Ensure both trains of XY relays for RCP seal return isolation valve, MOV-313, reset.
3) Open RCP seal return isolation valve, MOV-313.

IF MOV-313 can NOT be opened, THEN dispatch AO to AUX BLDG with RWST area key to check valve and breaker locally (breaker MCC C position 13J).

b. Verify RCP seal outlet valves b. Manually open valves. IF valves OPEN can NOT be opened, THEN verify IA aligned to CNMT and go to

~ RCP A, AOV-270A Step 3.

~ RCP B, AOV-270B

c. Check RCP ¹1 seal leakoff flow- c. Return to Step 1.

LESS THAN 5.5 GPM 3 Check RCP Cooling: Perform the following:

o Annunciator A-7, RCP A CCW a. Verify RCP CCW supply and return RETURN HIGH TEMP OR LOW FLOW- valves open.

EXTINGUISHED

~ RCP A, MOV-749A and MOV-759A o Annunciator A-15, RCP B CCW ~ RCP B, MOV-749B and MOV-759B RETURN HIGH TEMP OR LOW FLOW-EXTINGUISHED b. Ensure open CCW outlet valves from RCP thermal barriers.

~ RCP A, AOV-754A

~ RCP B, AOV-754B

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TITLE:

REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 6 of 8 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Check RCP g1 Seal Leakof f Perform the following:

Flows:

a. Monitor ¹1 seal outlet o Seal leakoff flows - GREATER temperature, IF seal outlet THAN 0.25 GPM temperature increasing, THEN return to Step 1.

o Seal leakoff flows - STABLE

! b. Monitor leakage from ¹2 seal to RCDT (Trend RCDT level, PPCS point ID L1003).

c. Calculate RCDT leakrate (Refer to RCDT tank level graph in Curve book).
d. Verify affected RCP seal leakoff is between 0.25 gpm and 5.5 gpm using RCDT leak rate and affected RCP seal leakoff flow.

5 Check RCP g2 Seal Indications:i IF affected RCP ¹1 seal leakoff flow decreasing, THEN failure of ¹2 o Annunciator B-3, RCP A STANDPIPE seal may be indicated. Continue HI LEVEL +1 FT - EXTINGUISHED plant operation while closely monitoring RCP seal indications.

o Annunciator B-4, RCP B STANDPIPE HI LEVEL +1 FT - EXTINGUISHED

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 7 of 8 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION REDUCING CHARGING FLOW WILL RESULT IN INCREASING REGEN HX OUTLET TEMPERATURE.

6 Check RCP Labyrinth Seal D/Ps Perform the following:

GREATER THAN 15 INCHES OF WATER a. Ensure open CCW outlet valves from RCP thermal barriers.

~ RCP A, AOV-754A

~ RCP B, AOV-754B

b. Verify seal injection flow greater than 5 GPM for affected RCP.
c. Adjust HCV-142 as necessary.
d. Dispatch AO to check seal injection filter D/P.
e. Check CCW surge tank level stable. IF level increasing, THEN go to AP-CCW.1, LEAKAGE INTO THE COMPONENT COOLING LOOP.

7 Check RCP g3 Seal Indications:( Check CNMT radiation monitors normal.

o Annunciator B-ll, RCP A STAND PIPE LO LEVEL -4FT - EXTINGUISHED ~ R-11

~ R-12 o Annunciator B-12, RCP B STAND PIPE LO LEVEL -4FT - EXTINGUISHED IF RCP standpipe level low and CNMT radiation increasing, THEN ¹ 3 seal leakage increase is probable.

Continue plant operation while closely monitoring RCP seal indications.

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 8 of 8 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Monitor Plant Conditions:

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a. RCP ¹1 seal indications a. IF affected RCP running, THEN return to Step 1. IF NOT, THEN o ¹1 seal leakoff flow - LESS perform the following:

THAN 5.5 GPM

1) Monitor affected RCP (Refer o ¹1 seal outlet temperature- to Attachment RCP LESS THAN 215'F DIAGNOSTICS).

o ¹1 seal D/P - GREATER THAN 2) Consult Plant Staff to 220 PSID determine if cooldown required.

o ¹1 seal leakoff flows GREATER THAN 0.25 GPM

b. RCS leakage - NORMAL (Refer to b. Perform the following:

leakage surveillance sheet)

1) Calculate RCS leakrate.
2) IF RCS leakrate greater than 1 gpm, THEN refer to Tech Spec section 3.1.5.2 for guidance. IF NOT, THEN consult Plant Staff.

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

9 Notify Higher Supervision

-END-

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REV: 7 AP-RCP.1 RCP SEAL MALFUNCTION PAGE 1 of 1 AP-RCP.1 APPENDIX LIST TITLE PAGES

1) ATTACHMENT RCP DIAGNOSTICS

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REV: 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 1 of 20 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 4 J /

PLAN SUPERINTENDENT C~ ci'ic",

EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV 10 ECA-0.1 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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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED PAGE 3 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

                            • a *x *x

% x *% x CAUTION

  • x **************

IF AN SI SIGNAL IS ACTUATED PRIOR TO PERFORMING STEP 10 OF THIS PROCEDURE, THEN SI SHOULD BE RESET TO PERMIT MANUAL LOADING OF EQUIPMENT ON AN AC EMERGENCY BUS.

            • x
  • x
  • x x x %
  • x x x x x *x *****************

NOTE: o'SFSTs should be monitored for information only. FR procedures should not be implemented prior to completion of Step 10.

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

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV 10 ECA-0.1 REQUIRED PAGE 4 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 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.

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REV: 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 5 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

e. Check IA supply: e. 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 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: 10 ECA-0.1 REQUIRED PAGE 6 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

    • x *********** P **x x
  • x **x x ***************

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

                        • x
  • x
  • x x x **x **x ****************

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 ins trument bus ENERGIZED D from MCC B or MCC A (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)

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

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV 10 ECA-0.1 REQUIRED PAGE 7 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 Check Been If Charging Established:

Flow Has

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 OS ~
b. Charging pump suction aligned to b. Manually align valves as RWST: necessary.

o 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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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED I

PAGE 8 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

  • 6 Monitor SI Initiation Criteria:
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 13'40+o FOR ADVERSE CONTAINMENT]

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED PAGE 9 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

                    • x*x*xxxxxxxx*x*xxx*xxxxx*x** 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).

              • ** x x x x x x x x x
  • x x
  • x ***x**************

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 Monitor 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 39%

V' EOP: TlTLE:

LOSS'OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-O.l REQUIRED PAGE 10 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
        • x**xx*x x***xx x x***%x*******x********

CAUTION IF AN SI SIGNAL IS ACTUATED AFTER THE SI PUMP SWITCHES ARE PLACED IN AUTO, THEN ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, SHOULD BE PERFORMED.

                  • x * **x*

x x ~ x

  • x
  • x x ****************

NOTE: Safeguards bus pump is energized.

switches should be placed in AUTO only if associated 10 Place Following Pump Switches In AUTO:

~ SI pumps

~ RHR pumps

~ CNMT spray pumps

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REV 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 11 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: FR procedures may now be implemented as necessary.

11 Verify Adequate SW 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 llc 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.

12 Check If Normal Operation CVCS Can Be Established

a. Verify IA restored: a. Continue with'tep 19. WHEN IA restored, THEN do Steps 12 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 13 through 18.

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REV 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 12 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

      • x****x* ax xx*~'Pxxkxxxxxxxxxxx*xx*x**x**

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.

  • x************* x****x*************

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

13 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: 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 13 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 Check Should IfBe Seal Return Flow 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 oE XY relays for RCP seal return isolation valve MOV-313 'i'f 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.

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

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REV 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 14 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Verify PRZR Level GREATER Continue with Step 19. WHEN PRZR THAN 134 [40: 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 40% open o Adjust charging pump speed as

~ TCV-130 necessary.

~ PCV-135 IF RCP seal return NOT established,

d. Reset both for trains of AOV-371 and AOV-427 XY relays if THEN consult TSC to determine excess letdown should be placed in if 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 ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED PAGE 15 of 20 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 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,

'HEN 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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REV: 10 ECA-0 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 16 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 suction 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 PRZR Level:

a. Check letdown - IN SERVICE a. Stop and start 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 ALL AC POWER RECOVERY WITHOUT SI REV 10 ECA-0.1 REQUIRED PAGE 17 of 20 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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LOSS OF ALL AC POWER RECOVERY WITHOUT REV 10 ECA-0.1 SI REQUIRED PAGE 18 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 1O AMPS 1) IF neither intermediate range channel is decreasing THEN initiate boration.

2) Continue with Step 23. WHEN flux is LESS THAN 10 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 lo-l 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

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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED PAGE 19 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Verify Adequate Shutdown Margin:

a. Direct RP to sample RCS and PRZR liquid for boron concentration
b. Verify boron concentration- b. Borate as necessary.

GREATER THAN REQUIREMENTS OF FIGURE SDM 24 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 39% necessary.

+25 Monitor SI Initiation Criteria:

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 1.
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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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV'0 ECA-0.1 REQUIRED PAGE 20 of 20 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 26 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) 27 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.

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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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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV: 10 ECA-0.1 REQUIRED PAGE 1 of 1 ECA-0.1 APPENDIX LIST 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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LOSS OF ALL AC POWER RECOVERY WITHOUT SI REV 10 ECA-0.1 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 1400 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 700 INADEQUATE SUBCOOLING 600 REGION ADVERSE CNMT 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: 10 ECA-0.1 LOSS OF ALL AC POWER RECOVERY WITHOUT SI REQUIRED PAGE 1 of 1 FIGURE SDM NOTE: o Curve includes allowance for one stuck rod. Add 100 ppm for each additional stuck rod.

o To obtain core burnup, use PPCS turn on code BURNUP.

BORON CONCENTRATION (PPH) 1800 BORON INCREMENTS 20 PPM 1600 1400 ADEQUATE SDM 1200 100 PPH CONSERVATISM INCLUDED 1000 800 600 400 BORATE 200 BURNUP INCREMENTS 100 HWD/HTU 0 1000 2000 3000 4000 5000 6000 7000 '8000 9000 10000 11000 12000 CYCLE 24 BURNUP tHWD/HTU)

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