ML17309A576

Rev 12 to EOP ECA-3.3, SGTR W/O Pressurizer Pressure Control.

ML17309A576
Person / Time
Site:	Ginna
Issue date:	04/20/1995
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
References
ECA-3.3, NUDOCS 9504280026
Download: ML17309A576 (64)

Text

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REV: 12 ECA-).3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 27 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE W /'7 PLANT S PERINTE DENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

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9504280026 950420 PDR ADOCK 05000244 P PDR I

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EOP: TITLE REV: 12 ECA-3. 9 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL I I PAGE 2 of 27 A. PURPOSE This procedure provides actions for a SGTR with coincident loss of normal and auxiliary PRZR sprays and PORVs.

B. ENTRY CONDITIONS/SYMPTOMS

1. ENTRY CONDITIONS This procedure is entered from:

a. E-3, STEAM GENERATOR TUBE RUPTURE, when PRZR pressure control is not available.

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REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 3 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: o Foldout page should be open AND monitored periodically.

o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+ 5 R/hr.

1 Check Ruptured S/G Narrow Go to Step 8.

Range Level LESS THAN 67%

[554 adverse CNMT]

2 Check RCP Status AT LEAST Try to start one RCP:

ONE RUNNING

a. Establish conditions for starting RCP.

o Bus 11A and Bus llB energized o Refer to Attachment RCP START

b. Start one RCP. IF no RCP can be started, THEN go to Step 4.

3 Check IF Normal PRZR Spray Available:

a. Verify IA to CNMT - AVAILABLE a. Perform the following:

1) Place PRZR heater control group to PULL STOP.

2) Place PRZR heater backup group to OFF.

3) Place normal spray valve controllers to MANUAL at 0%.

4) Go to Step 4.

b. Go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 21

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EOP: TITLE REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 4 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 Try To Restore PRZR PORV:

a. Block valves - AT LEAST ONE OPEN a. Open one block valve unless it was closed to isolate an open

~ MOV-516 for PCV-430 PORV.

~ MOV-515 for PCV-431C If block valves can NOT be opened, THEN dispatch AO to locally ensure breakers to block valves closed.

~ MOV-515, MCC C position 6C

~ MOV-516, MCC D position 6C

b. Check IA to CNMT - AVAILABLE b. Refer to Attachment N2 PORVS to operate PORVs.

c. Verify at least one PRZR PORV c. Go to Step 5.

flow path - AVAILABLE

d. Go to E-3, STEAM GENERATOR TUBE RUPTURE, Step 22

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REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 5 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: If auxiliary spray is the only means of RCS pressure control, THEN the 320'F AT limit between the spray line and PRZR does not apply.

5 Try To Establish Auxiliary Spray:

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

RUNNING

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP ¹1 seal outlet temperature offscale high, THEN locally isolate seal injection to affected RCP.

~ RCP A, V-300A

~ RCP B, V-300B

2) Ensure HCV-142 demand at 0%.

3) Start charging pumps as necessary.

IF charging not available, THEN go to Step 6.

b. Establish auxiliary spray flow: b. IF auxiliary spray can NOT be established, THEN go to Step 6.

1) Open auxiliary spray valve (AOV-296)

2) Close charging valve to loop B cold leg (AOV-294)

c. Go to E-3, STEAN GENERATOR TUBE RUPTURE, Step 21b

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 6 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION 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).

NOTE: TDAFW pump flow control valves fail open on loss of IA.

• 6 Monitor Intact S/G Level:

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.

b. Control feed flow to maintain b. IF narrow range level in intact narrow range level between 17% S/G continues to increase in an

[25% adverse CNMT] and 50% uncontrolled manner, THEN go to ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT - SUBCOOLED RECOVERY DESIRED, Step 1.

7 Check PRZR Level GREATER Return to Step l.

THAN 54 [304 adverse CNMT]

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REV: 12 Ec.A-3. 3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 7 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Check If SI Can Be Terminated:

subcooling based on core Go to

a. RCS exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING

a. Do NOT ECA-3 ',stop SI pumps.

SGTR WITH LOSS OF REACTOR COOLANT - SUBCOOLED RECOVERY DESIRED, Step 1.

b. Secondary heat sink: b. IF neither condition satisfied, THEN do NOT stop SI pumps. Go o Total feed flow to S/Gs to ECA-3.1, SGTR WITH LOSS OF GREATER THAN 200 GPM AVAILABLE REACTOR COOLANT - SUBCOOLED RECOVERY DESIRED, Step 1.

-OR-o Narrow range level in intact S/G - GREATER THAN 5% [25%

adverse CNMT]

c. RVLIS indication c. Do NOT stop SI pumps. Go to ECA-3.1, SGTR WITH LOSS OF o Level (no RCPs) - GREATER REACTOR COOLANT - SUBCOOLED THAN 68% [73% adverse CNMT] RECOVERY DESIRED, Step l.

-OR-o Fluid fraction (any RCP running) - GREATER THAN 80%

d. Any ruptured S/G narrow range d. Do NOT stop SI pumps. Return to level - INCREASING IN AN Step 2.

UNCONTROLLED MANNER OR OFFSCALE HIGH

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 1

PAGE 8 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Stop SI Pumps and Place In AUTO

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REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 9 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 10 Check Been If Charging Established:

Flow Has

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

1) IF CCW flow is lost to any RCP thermal barrier OR any RCP ¹1 seal outlet temperature offscale high, THEN dispatch AO with key to RWST gate to 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. Charging pump suction aligned to b. Manually align valves as RWST: necessary. IF LCV-112B can NOT be opened, THEN perform the o LCV-112B - OPEN 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 as necessary and adjust charging flow to perform the following:

o Restore PRZR level o Maintain RCS subcooling based on core exit T/Cs - GREATER THAN O'F USING FIGURE MIN SUBCOOLING

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TITLE REV: 12 ECA-3. 3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 10 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

• 11 Monitor RCS Inventory: Perform the following:

o RCS subcooling based on core a. Manually operate SI pumps as exit T/Cs - GREATER THAN O' necessary.

USING FIGURE MIN SUBCOOLING

b. Go to ECA-3.1, SGTR WITH LOSS OF o RVLIS indication REACTOR COOLANT - SUBCOOLED RECOVERY DESIRED, Step 1.

o Level (no RCPs) - GREATER THAN 68% [73% adv'erse CNMT]

-OR-o Fluid fraction (any RCP running) - GREATER THAN 80%

12 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 per pump). IF less than two SW pumps can be operated, THEN go to Step 20.

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

~ MOV-4616 and MOV-4735

c. Verify CNMT RECIRC fan c. Dispatch AO to locally throttle annunciator C-2, HIGH flow to CCW Hx to between TEMPERATURE ALARM - EXTINGUISHED 5000 gpm and 6000 gpm total flow.

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 11 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check Operation If Normal CVCS Can Be Established

a. Verify IA restored: a. Continue with Step 17. WHEN IA restored, THEN do Steps 13 o IA to CNMT (AOV-5392) - OPEN through 16.

o IA pressure - GREATER THAN 60 PSIG

b. Verify instrument bus D- b. Energize MCC B. IF MCC B NOT ENERGIZED available, THEN perform the following:

1) Verify MCC A energized.

2) Place instrument bus D on maintenance supply.

c. CCW pumps - ANY RUNNING c. Perform the following:

1) IF any RCP 81 seal outlet temperature offscale high, THEN isolate CCW to thermal barrier of affected RCP(s).

~ RCP A, MOV-749A and MOV-759A

~ RCP B, MOV-749B and MOV-759B

2) Manually start one CCW pump.

d. Charging pump - ANY RUNNING d. Continue with Step 20. WHEN any charging pump running, THEN do Steps 14 through 17.

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 12 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: If PRZR level is less than 13%, letdown may be established by placing AOV-427 to OPEN.

14 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 trains of XY relays THEN consult TSC to determine if for AOV-371 and AOV-427 excess letdown should be placed in 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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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 13 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check VCT Makeup System:

a. Adjust boric acid flow control valve in AUTO to 9.5 gpm

b. Verify the following: b. Adjust controls as necessary.

1) RMW mode selector switch in AUTO

2) RMW control armed - RED LIGHT LIT

c. Check VCT level: c. Manually increase VCT makeup flow as follows:

o Level - GREATER THAN 20%

1) Ensure BA transfer pumps and

-OR- RMW pumps running. IF NOT, THEN reset MCC C and MCC D UV o Level - STABLE OR INCREASING lockouts as necessary.

2) Place RMW flow control valve HCV-111 in MANUAL.

3) Increase RMW flow.'

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REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 14 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 16 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 17. WHEN VCT level greater than 40%,

THEN do Step 16b.

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

o LCV-112C - OPEN o LCV-112B - CLOSED

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 15 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 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 i

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: 12 ECA-P.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 16 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check If Seal Return Flow Should Be Established:

a. Verify RCP ¹1 seal outlet a. Go to Step 19.

temperature - LESS THAN 235'F

b. Verify RCP seal outlet valves b. Manually open valves as OPEN necessary.

~ AOV-270A

~ AOV-270B

c. Reset both trains of XY relays for RCP seal return isolation valve MOV-313

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. Perform the following:

LESS THAN 5.5 GPM

1) Trip the affected RCP

2) Allow 3 minutes for pump coast down, 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 19.

f. Verify RCP ¹1 seal leakoff flow f. Refer to AP-RCP.1, RCP SEAL GREATER THAN 0.8 GPM MALFUNCTION.

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REV: 12 ECA-0.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 17 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Equalize Charging And Letdown Flows:

a. Verify charging pump controllers in manual

b. Control charging and seal injection flows to equal letdown and seal leakoff flows 20 Check If Emergency Should Be Stopped:

D/Gs

a. Verify AC emergency busses a. Try to restore offsite power energized by offsite power: (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).

o Emergency D/G output breakers OPEN o AC emergency bus voltage-GREATER THAN 420 VOLTS o AC emergency bus normal feed breakers - CLOSED

b. Stop any unloaded emergency D/G and place in standby (Refer to Attachment D/G STOP) 21 Minimize Secondary Syst: em Contamination:

a. Isolate reject from hotwell to a. IF hotwell level increasing, CST' THEN direct RP to sample hotwells for activity.

Place hotwell level K controller (HC-107) in MANUAL at 50%

o Verify hotwell level - STABLE

b. Verify local actions to complete isolation of ruptured S/G (Refer to Attachment RUPTURED S/G)

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 18 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

22 Check If Source Detectors Should Range Be Energized:

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

DEENERGIZED

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

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

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

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

channels - LESS THAN 10 10 AMPS

-OR-o Greater than 20 minutes since reactor trip

d. Verify source range detectors d. Manually energize source range ENERGIZED detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).

IF source ranges can NOT be restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 22.

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

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REV: 12 EGA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 19 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Establish Normal Shutdown Alignment:

a. Check condenser - AVAILABLE a. Dispatch AO to perform Attachment SD-2.

b. Perform the following:

o Open generator disconnects

~ 1G13A71

~ 9X13A73 o Place voltage regulator to OFF o Open turbine drain valves o Rotate reheater steam supply controller cern to close valves' Place reheater dump valve switches to HAND o Stop all but one condensate pump

c. Verify adequate Rx head cooling:

1) Check IA to CNMT - AVAILABLE 1) Go to Step 24.

2) Verify at least one control 2) Manually start one fan as rod shroud fan - RUNNING power supply permits (45 kw)

3) Verify one Rx compartment 3) Perform the following:

cooling fan - RUNNING o Dispatch AO to reset UV relays at MCC C and MCC D.

o Manually start one fan as power supply permits (23 kw)

d. Verify Attachment SD COMPLETE

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REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL I PAGE 20 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Plant staff should decide whether to repair PRZR pressure control systems or continue with this procedure. If PRZR pressure control is established, PRZR level should be restored to greater than 5% [30%

adverse CNMT] and then further recovery should continue with E-3, STEAM GENERATOR TUBE RUPTURE, Step 37.

24 Check Isolated:

If SI ACCUMs Should Be

a. Check the following: a. Return to Step 11.

o RCS subcooling based on core exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING o RVLIS indication - GREATER THAN 68% [73% adverse CNMT]

b. Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves

~ MOV-841, MCC C position 12F

~ MOV-865, MCC D position 12C

c. Close SI ACCUM discharge valves c. Vent any unisolated ACCUMs:

~ MOV-841 1) Open vent valves for

~ MOV-865 unisolated SI ACCUMs.

~ ACCUM A, AOV-834A

~ ACCUM B, AOV-834B

2) Open HCV-945.

d. Locally reopen breakers for MOV-841 and MOV-865

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 21 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Leakage from ruptured S/G into RCS will dilute RCS boron concentration.

25 Verify Adequate Shutdown Margin

a. Direct RP to sample RCS and ruptured S/G for boron concentration

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

GREATER THAN REQUIREMENTS OF FIGURE SDM 26 Maintain Required RCP Seal Perform the following:

Injection Flow And Labyrinth Seal D/P: o Adjust charging flow to REGEN Hx, HCV-142 as necessary.

o Labyrinth seal D/P to each RCP-GREATER THAN 15 INCHES, OF WATER -OR-o RCP seal injection flow- o Dispatch AO to adjust seal GREATER THAN 6 GPM injection needle valves V-300A and V-300B if necessary.

27 Initiate RCS Cooldown to 350'F In RCS Cold Legs:

a. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR

b. Dump steam to condenser from b. Manually or locally dump steam intact S/G using intact S/G ARV.

IF no intact S/G available, THEN use faulted S/G.

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REV: 12 EGA-).3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 22 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION RCS AND RUPTURED S/G PRESSURES MUST BE MAINTAINED LESS THAN THE RUPTURED S/G ARV SETPOINT.

28 Control Charging Flow To Maintain RCS Subcooling:

a. RCS subcooling based on core a. Increase charging flow to exit T/Cs - GREATER THAN 20'F maintain subcooling greater than USING FIGURE MIN SUBCOOLING 20'F using Figure MIN SUBCOOLING and go to Step 29.

b. Ruptured S/G narrow range level b. Control charging flow to LESS THAN 90% [85% adverse maintain RCS pressure at CNMT] ruptured S/G pressure and go to Step 29.

c. Ruptured S/G narrow range level c. IF ruptured S/G level STABLE OR DECREASING increasing, THEN decrease charging flow to stabilize level. Maintain RCS subcooling greater than 20'F using Figure MIN SUBCOOLING.

29 Check Be If RCS Stopped:

Cooldown Should

a. RCS cold leg temperatures - LESS a. Return to Step 25.

THAN 350'F

b. Stop RCS cooldown

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 23 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Check RCS Pressure GREATER Go to Step 33 THAN 400 PSIG [300 PSIG adverse CNMT]

'31 Monitor Ruptured S/G Narrow Refill ruptured S/G to 67% [55%

Range Level GREATER THAN adverse CNMT] using feed flow.

17% r25% adverse CNMT]

IF either of the following conditions occurs, THEN stop feed flow to ruptured S/G:

o Ruptured S/G pressure decreases in an uncontrolled manner.

-OR-o Ruptured S/G pressure increases to 1020 psig.

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~ I EOP: TITLE REV 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 24 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o STEAM SHOULD NOT BE RELEASED FROM A RUPTURED S/G IF WATER MAY EXIST IN ITS STEAMLINE.

o RUPTURED S/G PRESSURE MAY DECREASE RAPIDLY WHEN STEAM IS RELEASED.

NOTE: The upper head region may void during RCS depressurization if RCPs level.

are not running. This may result in a rapidly increasing PRZR 32 Depressurize RCS And Ruptured S/G To 400 PSIG t'300 PSIG adverse CNMT]

a. Perform the following:

o Decrease charging and increase letdown to initiate backfill

-OR-o Initiate blowdown from ruptured S/G

-OR-o Dump steam from ruptured S/G

b. Check RCS pressure - LESS THAN b. ReturTL to Step 31.

400 psig [300 psig adverse CNMT]

c. Stop RCS depressurization

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL I

PAGE 25 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 33 Check Can Be IfEstablished:

RHR Normal Cooling

a. RCS cold leg temperature - LESS a. Return to Step 27.

THAN 350'F

b. RCS pressure - LESS THAN b. Return to Step 31.

400 psig [300 psig adverse CNMT]

c. Place RCS overpressure c. IF RCS overpressure protection protection system in service system can NOT be placed in (Refer to 0-7, ALIGNMENT AND service, THEN notify TSC of OPERATION OF THE REACTOR VESSEL potential Tech Spec violation if OVERPRESSURE PROTECTION SYSTEM) RHR system is placed in service.

d. Establish RHR normal cooling (Refer to Attachment RHR COOL)

NOTE: Leakage from ruptured S/G into RCS will dilute RCS boron concentration.

34 Verify Adequate Shutdown Margin

a. Direct RP to sample RCS and ruptured S/G for boron concentration

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

GREATER THAN REQUIREMENTS OF FIGURE SDM

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REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 26 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 35 Initiate RCS Cooldown To Cold Shutdown:

a. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR

b. Use RHR system if in service

c. Dump steam to condenser from c. Manually or locally dump steam intact S/G from intact S/G using ARVs.

IF no intact S/G available and RHR system NOT in service, THEN use faulted S/G.

36 Control Charging Flow To Maintain RCS Subcooling:

a. RCS subcooling based on core a. Increase charging flow to exit T/Cs - GREATER THAN 20'F maintain subcooling greater than USING FIGURE MIN SUBCOOLING 20'F using Figure MIN SUBCOOLING and go to Step 37.

b. Ruptured S/G narrow range level b. Control charging flow to LESS THAN 90% [85% adverse maintain RCS pressure at CNMT) ruptured S/G pressure and go to Step 37.

c. Ruptured S/G narrow range level c. IF ruptured S/G level STABLE OR DECREASING increasing, THEN decrease charging flow to stabilize level. Maintain RCS subcooling greater than 20'F using Figure MIN SUBCOOLING ~

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REV: 12 ECA-,3. 3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL I

PAGE 27 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

• 37 Monitor RCP Operation:

a. RCPs - ANY RUNNING a. Go to Step 39.

b. Check the following: b. Stop the affected RCP(s).

o RCP ¹1 seal D/P - GREATER THAN 220 PSID o Check RCP seal leakage WITHIN THE NORMAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF 38 Check Core Exit T/Cs LESS Return to Step 34.

THAN 200'F 39 Evaluate Long Term Plant Status:

a. Maintain cold shutdown conditions

b. Consult TSC

-END-

EOP: TITLE:

REV: 12 ECA-3. 3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 1 ECA-3.3 APPENDIX LIST TITLE PAGES

1) RED PATH

SUMMARY

2) FIGURE MIN SUBCOOLING

3) FIGURE SDM

4) FIGURE RCP SEAL LEAKOFF

5) ATTACHMENT RCP START

6) ATTACHMENT N2 PORVS

7) ATTACHMENT RUPTURED S/G

8) ATTACHMENT D/G STOP

9) ATTACHMENT SD-1

10) ATTACHMENT SEAL COOLING

11) ATTACHMENT SD-2

12) ATTACHMENT RHR COOL

13) ATTACHMENT AUX BLDG SW

14) FOLDOUT

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EOP: TITLE:

REV 12

,ECA-~.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 1 RED PATH

SUMMARY

a. SUBCRITICALITY Nuclear power greater than 5t

b. CORE COOLING Core exit T/Cs greater than 1200'F

-OR-Core exit T/Cs greater than 700'F AND RVLIS level (no RCPs) less than 434 [464 adverse CNMT]

c. HEAT SINK Narrow range level in all S/Gs less than 54

[254 adverse CNMT] AND total feedwater flow less than 200 gpm

d. INTEGRITY Cold leg temperatures decrease greater than 100 F in last 60 minutes AND RCS cold leg temperature less than 285'F

e. CONTAINMENT CNMT pressure greater than 60 psig

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EOP: TITLE:

REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL

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PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC S PRESSURE (PSIG) 2500 2400 RCS PRESSURE 2300 INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 SUBCOOLED 1300 REGION 1200 1100 1000 900 800 INADEQUATE 700 SUBCOOLING

'00 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)

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EOP: TITLE REV 12 EGA,-3 ~ 3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 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 point ID BURNUP.

BORON CONCENTRATION (PPM) 1800 BORON INCREMENTS 20 PPH 1600 1400 ADEQUATE SDH 1200 100 PPH CONSERVATISH INCLUDED 1000 800 600 400 200 BURNUP INCREMENTS 100 MWD/MTU 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 25 BURNUP (MWD/MTU)

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EOP: TITLE:

REV: 12 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL

~ r PAGE 1 of 1 FIGURE RCP SEAL LEAKOFF

¹1 SEAL LEAK RATE (GPH) 6 LEAK RATE INCREHENTS 0.2 GPH NORHAL OPERATING RANGE DP INCREHENTS 50 PSI 250 500 750 1000 1250 1500 1750 2000 2250 2500

¹1 SEAL DP (RCS PRESS - VCT PRESS) PSI

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