ML17262A887
| ML17262A887 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/06/1992 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262A884 | List: |
| References | |
| ECA-3.2, NUDOCS 9206160392 | |
| Download: ML17262A887 (58) | |
Text
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REV: 10 SGTR WITH LOSS PF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 23 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
/
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PLANT SUPERINTENDENT EF EC IVE DATE CATEGORY 1.0 REVIEWED BY:
9ZOSliO~9k 96*OSOS PDR ADQCK 05000244 PDR
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REV: 10 ECA-3.2 SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 2 of 23 A. PURPOSE This procedure provides actions to cool down and depressurize the RCS to cold shutdown conditions while minimizing loss of RCS inventory and voiding in the RCS.
B. ENTRY CONDITIONS/SYMPTOMS
- 1. ENTRY CONDITIONS This procedure is entered from:
- a. ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT-SUBCOOLED RECOVERY DESIRED, when RWST level is low without a corresponding increase in containment sump level.
- b. ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED, when the ruptured S/G level is high and plant staff selects saturated recovery method.
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TITLE:
REV: 10 ECA-3.2 SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 3 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF RWST LEVEL DECREASES TO LESS THAN 28%, THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.
NOTE: o Steps 1 through 14 of ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT-SUBCOOLED RECOVERY DESIRED, should be performed before continuing with this procedure.
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 Add Makeup To RWST As Necessary:
o Refer to S-9J, BLENDING TO RWST
-OR-o Refer to S-3.2D, TRANSFERRING WATER FROM CVCS HUT(S) TO RWST TO SFP
-OR-o Refer to Attachment SFP-RWST
T!TLE:
EOP:
SGTR WITH LOSS OF REACTOR COOLANT REV'0 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 4 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
o RCS PRESSURE SHOULD BE MONITORED. IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG [465 PSIG ADVERSE CNMTj, THEN THE RHR PUMPS MUST BE MANUALLY RESTARTED TO SUPPLY WATER TO THE RCS.
2 Check Stopped:
If RHR Pumps Should Be
- a. Check RCS pressure: a. Go to Step 3.
- 1) Pressure - GREATER THAN 250 psig [465 psig adverse CNMT]
- b. Stop RHR pumps and place in AUTO 3 Check If S/G Is Intact:
Secondary Side IF any S/G pressure decreasing in an uncontrolled manner OR completely depressurized, THEN o Pressure in both S/Gs - STABLE verify faulted S/G isolated unless OR INCREASING needed for RCS cooldown:
o Pressure in both S/Gs - GREATER ~ Steamlines THAN 100 PSIG ~ Feedlines IF NOT, THEN go to E-2, FAULTED STEAM GENERATOR ISOLATION, Step 1.
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REV 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 5 of 23 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.
4 Check 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 the narrow range level between 17% intact S/G continues to increase
[25% adverse CNMT) and 50% in an uncontrolled manner, THEN consider isolating unnecessary release paths:
~ TDAFW pump steam supply valves
~ S/G blowdown valves
~ Refer to Attachment RUPTURED S/G
EOP:
SGTR WITH LOSS OF REACTOR COOLANT REV'0 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 6 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Shutdown margin should be monitored during RCS cooldown. Refer to Figure SDM.
5 Initiate RCS Cooldown To Cold Shutdown:
- a. Establish and maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR.
- b. Use RHR syst'm if in service
- c. Dump steam to condenser from c. Manually or locally dump steam intact S/G using intact S/G ARV.
IF no intact S/G available, THEN perform the following:
o Use faulted S/G.
-OR-o IF RHR system NOT in service, THEN use ruptured S/G.
6 Check RCS Subcooling Based On Go to Step 18.
Core Exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING 7 Check Safeguards Pump Status Go to Step 14.
o SI pumps - ANY RUNNING
-OR-o RHR pumps - ANY RUNNING IN INJECTION MODE
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SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 7 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 8 Place PRZR Heater Switches In The Following Positions:
o PRZR heater control group - PULL STOP o PRZR heater backup group - OFF CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION. THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
If auxiliary spray 1
NOTE: o is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
o When using PRZR PORV, select one with an operable block valve.
9 Depressurize RCS To Refill PRZR
- a. Use normal PRZR spray valve a. Use one PRZR PORV. IF IA NOT associated with running RCP available, THEN refer to Attachment N2 PORVS.
~ PCV-431A for A RCP
~ PCV-431B for B RCP IF no PORV available, THEN use, auxiliary spray valve.
- b. PRZR level - GREATER THAN 13% b. Continue with Step 10. WHEN
[40% adverse CNMT) level greater than 13% [40%
adverse CNMT], THEN stop RCS depressurization.
- c. Stop RCS depressurization
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REV 10 SGTR gITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 8 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
10 Check Started:
If An RCP Should Be
- b. RCS subcooling based on core b. Go to Step 18.
exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING
- c. PRZR level - GREATER THAN 13% c. Return to Step 9.
[40% adverse CNMT]
- d. Try to start an RCP
- 1) Establish conditions for starting an RCP o Bus 11A or 11B energized o Refer to Attachment RCP START
- 2) Start one RCP
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REV: 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 9 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Check Pumps If One Of Three SI Should Be Stopped:
- a. Three SI pumps - RUNNING a. Go to Step 12.
- b. RCS subcooling based on core b. IF RCS hot leg temperatures exit T/Cs - GREATER THAN 10'F greater than 325'F [270'F
[10'F adverse CNMT] USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 18.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step llc. IF no RHR pump can be operated in in]ection mode, THEN go to Step 18.
- c. Check PRZR level - GREATER THAN c. Do NOT stop SI pump. Return to 13% [40% adverse CNMT] Step 9.
- d. Stop one SI pump
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REV: 10 ECA-3 ' SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 10 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Check If One Should Be Stopped:
Of Two SI Pumps
- a. Two SI pumps - RUNNING a. Go to Step 13.
- b. RCS subcooling based on core b. IF RCS hot leg temperatures exit T/Cs - GREATER THAN 35'F greater than 325'F [270'F
[35'F adverse CNMT] USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 18.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325'F
[270'F adverse CNMT), THEN ensure at least one RHR pump running in injection mode and go to Step 12c. IF no RHR pump can be operated in injection mode, THEN go to Step 18.
- c. PRZR level - GREATER THAN 138 c. Do NOT stop SI pump. Return to
[408 adverse CNMT] Step 9.
- d. Stop one SI pump
t' EOP: TITLE SGTR WITH LOSS OF REACTOR COOLANT REV 10 ECA-3 ' SATURATED RECOVERY DESIRED pAGE 11 of 23 STEP ACTION/EXPECTED. RESPONSE RESPONSE NOT OBTAINED 13 Check Be If Last Stopped:
SI Pump Should
- a. One SI pump - RUNNING a. IF any RHR pump running in injection mode, THEN go to Step 18. IF NOT, THEN go to Step 14.
- b. Determine required RCS subcooling from table:
Charging Pump RCS Subcooling Criteria Availability NONE Insufficient subcooling to stop SI pump.
ONE 215 'F [215'F adverse CNMT)
TWO 150'F [150'F adverse CNMT],
THREE 80'F [80'F adverse CNMT]
- c. RCS subcooling based on core c. IF RCS hot leg temperatures exit T/Cs - GREATER THAN VALUE greater than 325'F [270'F FROM TABLE ABOVE USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 18.
,IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 325 'F
[270'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 13d. IF no RHR pump can be operated in injection mode, THEN go to Step 18.
- d. PRZR level - GREATER THAN 13% d. Do NOT stop SI pump. Return to
[40% adverse CNMT] Step 9.
- e. Stop running SI pump
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EOP: TITLE REV: 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 12 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 Control Charging Flow To Start charging pumps as necessary Maintain RCS Inventory: and adjust charging flow to maintain RCS inventory.
o RVLIS level (no RCPs) - BETWEEN 68% AND 73% [73% AND 76% adverse CNNT]
-OR-o RVLIS fluid fraction (any RCP
'unning) - BETWEEN 80% AND 90%
CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN'HE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
15 Check RCP Status:
- a. RCPs - AT LEAST ONE RUNNING a. Perform the following:
- 1) Establish condi,tions for starting an RCP:
o Verify bus 11A or 11B energized.
o Refer to Attachment RCP START.
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- 2) Start one RCP.
IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).
IF natural circulation NOT verified, THEN increase dumping steam.
- b. Stop all but one RCP
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EOP: TITLE:
SGTR WITH LOSS OF REACTOR COOLANT REV 10 ECA-3 ' SATURATED RECOVERY DESIRED PAGE 13 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION. THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
o IF SI HAS BEEN TERMINATED, THE ACCUMS SHOULD BE ISOLATED PRIOR TO DEPRESSURIZING THE RCS TO LESS THAN 1000 PSIG.
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 PRZR PORV, select one with an operable block valve.
16 Depressurize RCS To Saturation At Core Exit:
- a. Determine saturation pressure for core exit T/Cs using Figure TSAT
- b. Use normal PRZR spray valves b. Use one PRZR PORV. IF IA NOT associated with running RCP available, THEN refer to Attachment N2 PORVS.
~ PCV-431A for A RCP
~ PCV-431B for B RCP IF PORV NOT available, THEN use auxiliary spray valve (AOV-296).
- c. Energize PRZR heaters as necessary
- d. Depressurize RCS until EITHER of the following conditions satisfied:
o PRZR level - GREATER THAN 75%
[65% adverse CNMT]
-OR-o RCS pressure - AT SATURATION FROM STEP 16a
EOP:
SGTR WITH LOSS OF REACTOR COOLANT
,REV: 10 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 14 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Verify Adequate Shutdown Margin
- b. Verify boron concentration- b. Borate as necessary.
GREATER THAN REQUIREMENTS OF FIGURE SDM 18 Verify SI Flow Not Required:
- a. Core exit T/Cs - DECREASING a. Increase dumping steam.
IF core exit T/Cs do NOT decrease, THEN manually operate SI pumps as necessary.
o Level (no RCPs) - GREATER THAN 68% [73% adverse CNMT]
-OR-o Fluid Fraction (any RCP running) - GREATER THAN 80%
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REV: 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 15 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 Check .If SI ACCUMs Should Be Isolated:
- a. RCS subcooling based on core a. IF both RCS hot leg temperatures exit T/Cs - GREATER THAN O' less than 400'F, THEN go to USING FIGURE MIN SUBCOOLING Step 19c.
IF NOT, THEN go to Step 20.
- b. PRZR level - GREATER THAN 5% b. Return to Step 9.
[30% adverse CNMT]
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C
- d. Close SI ACCUM discharge valves d. 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.
- e. Locally reopen breakers .for MOV-841 and MOV-865
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REV 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 16 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 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)
Minimize Secondary System 50'.
21 Contamination:
- a. Isolate reject from hotwell to IF hotwell level increasing, CST: THEN direct HP to sample hotwells for activity.
o Place hotwell level controller (HC-107) in MANUAL at o Verify hotwell level - STABL'E
- b. Verify local actions to complete isolation of ruptured S/G (Refer to Attachment RUPTURED S/G)
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REV: 10 ECA-3.2 SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 17 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 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 23.
- 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.
23 Check RCP Cooling Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
- a. Check CCW to RCPs o Annunciator A-7, RCP 1A CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED o Annunciator A-15, RCP 1B CCW RETURN HIGH TEMP OR LOW FLOW EXTINGUISHED
- b. Check RCP seal injection o Labyrinth seal D/Ps - GREATER THAN 15 INCHES OF WATER
-OR-o RCP seal injection flow to each RCP - GREATER THAN 6 GPM
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SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 18 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 24 Check If Seal Return Flow Should Be Established:
- a. Verify instrument bus D- a. Perform the following:
ENERGIZED
- 1) Ensure steam dump mode control in MANUAL.
- b. Verify RCP ¹1 seal outlet b. Go to Step 25.
temperature - LESS THAN 235'F
- c. Verify RCP seal outlet valves c. Manually open valves as OPEN necessary.
~ AOV-270A
~ AOV-270B
- d. Reset both trains of XY relays for RCP seal return isolation valve MOV-313
- e. Open RCP seal return isolation e. Perform the following:
valve MOV-313
- 1) Place MOV-313 switch to OPEN.
- f. Verify RCP ¹1 seal leakoff flow f. IF any RCP seal leakoff flow LESS THAN 5 ' GPM greater than 5.5 gpm THEN:
o Close the affected RCP seal discharge valve
~ RCP A, AOV-270A
~ RCP B, AOV-270B o Trip the affected RCP IF both RCP seal discharge valves are shut, THEN go to
.Step 25.
- g. Verify RCP ¹1 seal leakoff flow g. Refer to AP-RCP.1, RCP SEAL GREATER THAN 0.25 GPM MALFUNCTION.
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SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3 ' SATURATED RECOVERY DESIRED PAGE 19 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
25 Check If Source Detectors Should Range Be Energized:
- a. Source range channels a. Go to Step 25e.
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 26. WHEN flux is LESS THAN 10 amps on any operable channel, THEN do Steps 25c, d and e.
- c. Check the following: c. Continue with Step 26. WHEN either condition met, THEN do o Both intermediate range Steps 25d and e.
channels - LESS THAN 10 AMPS
-OR-o Greater than 20 minutes since reactor trip
- d. Verify source range detectors d. Manually energize source range ENERGIZED detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).
IF source ranges can NOT be restored, THEN refer to ER-NIS.1, SR MALFUNCTION and go to Step 26.
- e. Transfer Rk-45 recorder to one source range and one intermediate range channel
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REV: 10 ECA-3.2 SGTR HITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 20 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 26 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 cam to close valves o Place reheater dump valve switches to HAND o Stop all but one condensate pump
- c. Verify adequate Rx head cooling:
- 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: 10 SGTR gITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE. 21 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION FEED FLOW SHOULD NOT BE ESTABLISHED TO ANY RUPTURED S/G WHICH IS ALSO FAULTED UNLESS IT IS NEEDED FOR RCS COOLDOWN.
27 Check Ruptured S/G(s) Narrow Refill ruptured S/G to 67% [55%
Range Level GREATER THAN adverse CNMT] using feed flow.
17% [254 adverse CNMT)
IF either of the following conditions occurs, THEN stop feed flow to ruptured S/G unless needed for RCS cooldown:
o Ruptured S/G pressure decreases in an uncontrolled manner.
-OR-o Ruptured S/G pressure increases to 1020 psig.
28 Check If RCPs Must Be Stopped:
- a. RCPs - ANY RUNNING a. Go to Step 29.
- b. Check the following: b. Go to Step 29.
o RCP ¹1 seal D/P - LESS THAN 220 PSID
-OR-o Check RCP seal leakage - LESS THAN 0.25 GPM
- c. Stop affected RCP(s) 29 Check Condenser Steam Dump Use intact S/G ARV for RCS Available CONDENSER VACUUM temperature control.
GREATER THAN 20 INCHES HG
EOP: TITLE REV 10 ECA-3.2 SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 22 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Check Can Be IfEstablished:
RHR Normal Cooling
- a. RCS cold leg temperature - LESS a. Go to Step 31.
THAN 350'F
- b. RCS pressure - LESS THAN b. Go to Step 31.
400 psig [300 psig adverse CNMT)
- c. Place letdown pressure controller in MANUAL CLOSED
- d. Check following valves - OPEN d. Perform the following:
~ AOV-371, letdown isolation 1) Reset both trains of XY valve , relays for AOV-371 and
~ AOV-427, loop B cold leg to AOV-427.
REGEN Hx
~ At least one letdown orifice 2) Open AOV-371 and AOV-427.
valve (AOV-200A, AOV-200B, or AOV-202) 3) Open one letdown orifice valve
- e. Verify pressure on PI-135 - LESS e. Go to Step 31.
THAN 400 PSIG
- f. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OF THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
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SGTR WITH LOSS OF REACTOR COOLANT REV'0 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 23 of 23 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 31 Check Core Exit T/Cs 'ESS Return to Step 4.
THAN 200'F 32 Evaluate Long Term Plant:
Status:
- a. Maintain cold shutdovn conditions
- b. Consult TSC
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SGTR WITH LOSS OF REACTOR COOLANT REV'0 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 ECA-3.2 APPENDIX LIST TITLE PAGES
- 1) RED PATH
SUMMARY
- 2) 'IGURE MIN SUBCOOLING
- 3) FIGURE SDM
- 4) FIGURE TSAT
- 5) ATTACHMENT SFP-RWST
- 6) ATTACHMENT N2 PORVS
- 7) ATTACHMENT NC
- 8) ATTACHMENT SEAL COOLING
- 9) ATTACHMENT RCP START
- 10) ATTACHMENT D/G STOP
- 11) ATTACHMENT AUX BLDG SW
'2)
ATTACHMENT RUPTURED S/G
- 13) ATTACHMENT SD-1
- 14) ATTACHMENT SD-2
- 15) ATTACHMENT RHR COOL
- 16) FOLDOUT
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SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 RED PATH
SUMMARY
- a. SUBCRITICALITY Nuclear power greater than 54
- 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 43% t'464 adverse CNMT]
- c. HEAT SINK Narrow range level in all S/Gs less than 54
[25% 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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REV 10 SGTR gITH LOSS OF REACTOR COOLANT ECA-3 ' SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below l-) 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 INADEQUATE 700 SUBCOOLING 600 REGION DV RS E CNMT 500 400 300 200 NORMAL CNMT TEMPERATURE INCREMENTS 10'F 100 0
200 250 '00 350 400 450 500 550
') 600 650 700 CORE EXIT SATURATION TEMPERATURE (
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TITLE:
REV 10 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE SDM BORON CONCENTRATION (PPH) 1800 BORON INCREMENTS 20 PPM 1600 1400 ADEQUATE SDH 1200 100 PPH CONSERVATISH INCLUDED 1000 800 600 400 BORATE 200 BURNUP INCREHENTS 100 HWD/HTU 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 CYCLE 22 BURNUP (HWD/HTU)
NOTE: To obtain core burnup, use PPCS turn on code BURNUP.
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EOP: TITLE SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE TSAT SAT URATION PRESSURE (PSIG) 2500 2400 PRESSURE 2300 INCREMENTS 2200 20 PSIG 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 TEMPERATURE INCREMENTS 10'F 100 0
200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ( F)
Ti 1
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EOP: TITLE:
SGTR WITH LOSS OF REACTOR COOLANT REV: 10 ECA-3.2 SATURATED RECOVERY PAGE 1 of 1 FOLDOUT PAGE 1~ SI REINITIATION CRITERIA IF EITHER condition listed below occurs, THEN manually operate SI pumps as necessary:
o Core exit T/Cs INCREASING
-OR-o Check RVLIS indication:
Level (no RCPs) LESS THAN 684 [734 adverse CNMT]
Fluid fraction (any RCP running) LESS THAN 804 2 ~ SECONDARY INTEGRITY CRITERIA IF any S/G pressure is decreasing in an uncontrolled manner or is completely depressurized, and has not been isolated, THEN go to E-2, FAULTED S/G ISOLATION, Step 1, unless faulted S/G needed for RCS cooldown.