ML17309A575
| ML17309A575 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/20/1995 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| References | |
| ECA-3.2, NUDOCS 9504280023 | |
| Download: ML17309A575 (127) | |
Text
EOP: T!TLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 25 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT Wad-%
EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
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EOP:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT FCA-3.2 SATURATED RECOVERY DESIRED PAGE 2 of 25 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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EOP: TITLE SGTR WITH LOSS OF REACTOR COOLANT REV 14 ZCA-3.2 SATURATED RECOVERY DESIRED PAGE 3 of 25 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 15 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+ 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
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EOP: TITLE:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT RCA-3.2 SATURATED RECOVERY DESIRED PAGE 4 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF OFFSITE POWER IS LOST AFTER SI RESET, THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G. MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
o RCS PRESSURE SHOULD BE MONITORED. IF RCS PRESSURE DECREASES TO LESS THAN 250 PSIG [465 PSIG ADVERSE CNMT], 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.
l) Pressure - GREATER THAN 250 psig [465 psig adverse CNMT]
- b. Stop RHR pumps and place in AUTO
EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ZCA-3.2 SATURATED RECOVERY DESIRED PAGE 5 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION IF ANY RUPTURED S/G IS FAULTED, FEED FLOW TO THAT S/G SHOULD REMAIN ISOLATED DURING SUBSEQUENT RECOVERY ACTIONS UNLESS NEEDED FOR RCS COOLDOWN.
- 3 Monitor Ruptured S/G Level:
- a. Narrow range level - GREATER a. IF ruptured S/G NOT faulted, THAN 5% [25% adverse CNMT] THEN perform the following:
l) Maintain feed flow to ruptured S/G until level greater than 5% [25% adverse CNMT].
- 2) Continue with Step 4. WHEN ruptured S/G level greater than 5% [25% adverse CNMT],
THEN do Steps 3b through e.
~ S/G A, MOV-4007
~ S/G B, MOV-4008
- c. Pull stop MDAFW pump for ruptured S/G
- d. Close TDAFW pump flow control d. Dispatch AO with locked valve valve to ruptured S/G key to locally close TDAFW pump manual feedwater isolation valve
~ S/G A, AOV-4297 to ruptured S/G.
~ S/G B, AOV-4298
~ S/G A, V-4005
~ S/G B, V-4006
- e. Verify MDAFW pump crosstie e. Manually close valves.
valves - CLOSED
~ MOV-4000A
~ MOV-4000B
'4 EOP: TITLE: L REV 14 SGTR WITH LOSS OF REACTOR COOLANT ZCA-3 2 SATURATED RECOVERY DESIRED PAGE 6 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 4 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.
CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).
NOTE: TDAFW pump flow control valves fail open on loss of IA.
- 5 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 pa<row 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
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EOP:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 7 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Shutdown margin should be monitored during RCS cooldown. Refer to Figure SDM.
6 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 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.
7 Check RCS Subcooling Based On Go to Step 19.
Core Exit T/Cs GREATER THAN O'F USING FIGURE MIN SUBCOOLING 8 Check Safeguards Pump Status Go to Step 15.
o SI pumps - ANY RUNNING
-OR-o RHR pumps - ANY RUNNING IN INJECTION MODE
dp EOP: TITLE SGTR WITH LOSS OF REACTOR COOLANT REV: 14 T"CA-3 . 2 SATURATED RECOVERY DESIRED PAGE 8 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Place PRZR Heater Switches In The Following Positions:
o PRZR heater control group - PULL STOP o PRZR heater backup group - OFF I
CAUTION VOIDING MAY OCCUR IN THE RCS DURING RCS DEPRESSURIZATION. THIS WILL RESULT IN A RAPIDLY INCREASING PRZR LEVEL.
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.
10 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 ll. WHEN
[40% adverse CNMT] level greater than 13% [40%
adverse CNMT], THEN stop RCS depressurization.
- c. Stop RCS depressurization
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TITLE:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT FCA-3.2 SATURATED RECOVERY DESIRED PAGE 9 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
o INADVERTENT CRITICALITY MAY OCCUR FOLLOWING NATURAL CIRCULATION COOLDOWN IF THE RCP IN THE RUPTURED LOOP IS STARTED FIRST.
ll Check Started:
If An RCP Should Be
- b. RCS subcooling based on core b. Go to Step 19.
exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING
- c. PRZR level - GREATER THAN 13% c. Return to Step 10.
[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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EOP:
SGTR WITH LOSS OF REACTOR COOLANT REV: 14
,ECA-3.2 SATURATED RECOVERY DESIRED PAGE 10 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 12 Check Pumps If One Should Of Three SI Be Stopped:
- a. Three 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 10'F greater than 320'F [310'F
[10'F adverse CNMT] USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320'F
[310'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 19.
- c. Check PRZR level - GREATER THAN c. Do NOT stop SI pump. Return to 13% [40% adverse CNMT] Step 10.
- d. Stop one SI pump
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 11 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check Should IfBe OneStopped:
Of Two SI Pumps
- a. Two SI pumps - RUNNING a. Go to Step 14.
- b. RCS subcooling based on core b. IF RCS hot leg temperatures exit T/Cs - GREATER THAN 35'F greater than 320'F [310'F
[35'F adverse CNMT] USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320'F
[310'F adverse CNMT], THEN ensure at least one RHR pump running in injection mode and go to Step 13c. IF no RHR pump can be operated in injection mode, THEN go to Step 19.
- c. PRZR level - GREATER THAN 13% c. Do NOT stop SI pump. Return to
[40% adverse CNMT] Step 10.
- d. Stop one SI pump
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EOP: TITLES REV: 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 12 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 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 19. IF NOT, THEN go to Step 15.
- 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 320'F [310'F FROM TABLE ABOVE USING FIGURE adverse CNMT] OR IF RHR normal MIN SUBCOOLING cooling in service, THEN go to Step 19.
IF RHR normal cooling NOT in service AND RCS hot leg temperatures less than 320'F
[310'F adverse CNMT), THEN ensure at least one RHR pump running in injection mode and go to Step 14d. IF no RHR pump can be operated in injection mode, THEN go to Step 19.
- d. PRZR level - GREATER THAN 13% d. Do NOT stop SI pump. Return to
[40% adverse CNMT] Step 10.
- e. Stop running SI pump
t'4 EOP:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED I
PAGE 13 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check Be If Charging Controlled Flow Should To Maintain RCS Inventory:
- a. Check RHR pumps - RUNNING IN a. Perform the following:
INJECTION MODE
- 1) Control charging flow to maintain RCS inventory:
BETWEEN 68% AND 73% [73%
AND 76% adverse CNMT]
-OR-o RVLIS fluid fraction (any RCP running) - BETWEEN 80%
AND 90%
- 2) Go. to Step 16.
- b. Go to Step 19
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EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 14 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
o INADVERTENT CRITICALITY MAY OCCUR FOLLOWING NATURAL CIRCULATION COOLDOWN IF THE RCP IN THE RUPTURED LOOP IS STARTED FIRST.
16 Check RCP Status:
- a. RCPs - AT LEAST ONE RUNNING a. Perform the following:
- 1) Establish conditions for starting an RCP:
o Verify bus 11A or 11B energized.
o Refer to Attachment RCP START.
- 2) Start one RCP.
IF an RCP can NOT be started, THEN verify natural circulation (Refer to Attachment NC).
IF natural circulation NOT verified,'HEN increase dumping steam
- b. Stop all but one RCP
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EOP: TITLE:
SGTR WITH LOSS OF REACTOR COOLANT REV: 14 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 15 of 25 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.
C 17 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 17a
EOP:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 16 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Verify Adequate Shutdown Margin
- b. Verify boron concentration- b. Borate as necessary.
GREATER THAN REQUIREMENTS OF FIGURE SDM
- 19 Monitor SZ Reinitiation Criteria:
- 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 CNMTj
-OR-o Fluid Fraction (any RCP running) - GREATER THAN 80%
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EOP:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 17 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 20 Check Isolated:
If SI ACCUMs Should Be
- 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 20c.
IF NOT, THEN go to Step 21.
- b. PRZR level - GREATER THAN 5% b. Return to Step 10.
[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
EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT
.ECA-3.2 SATURATED RECOVERY DESIRED PAGE 18 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 21 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) 22 Minimize Secondary System Contamination:
- a. Isolate reject from hotwell to a. IF hotwell level, increasing, CST' THEN direct RP to sample hotwells for activity.
Place hotwell level 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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EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3 ' SATURATED RECOVERY DESIRED PAGE 19 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 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 24.
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.
24 Check RCP Cooling Establish normal cooling to RCPs (Refer to Attachment SEAL COOLING).
- a. Check CCW to RCPs o Annunciator A-7, RCP lA 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
C EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 20 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 25 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 26.
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. 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 v'al've
~ RCP A, AOV-270A
~ RCP B, AOV-270B IF both RCP seal discharge valves are shut, THEN go to Step 26.
- g. Verify RCP ¹1 seal leakoff flow g. Refer t'o AP-RCP.1, RCP SEAL GREATER THAN 0.8 GPM MALFUNCTION.
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EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT iECA-3.2 SATURATED RECOVERY DESIRED PAGE 21 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
26 Check If Source Detectors Should Range Be Energized:
- a. Source range channels a. Go to Step 26e.
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 27. WHEN flux is LESS THAN 10 1 amps on any operable channel, THEN do Steps 26c, d and e.
- c. Check the following: c. Continue with Step 27. WHEN either condition met, THEN do o Both intermediate range Steps 26d 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 27.
- e. Transfer Rk-45 recorder to one source range and one intermediate range channel
lag
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EOP: TITLE:
REV 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 22 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 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
EOP: TITLE:
SGTR WITH LOSS OF REACTOR COOLANT REV 14 ZCA-3. 2 SATURATED RECOVERY DESIRED PAGE 23 of 25 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.
- 28 Monitor Ruptured S/G(s) Refill ruptured S/G to 67% [55%
Narrow Range Level GREATER adverse CNMT] using feed flow.
THAN 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.
- 29 Monitor RCP Operation:
- a. RCPs - ANY RUNNING a. Go to Step 30.
- b. Check the following: b. Stop the affected RCP(s).
o RCP 81 seal D/P - GREATER THAN 220 PSID o Check RCP seal leakage-WITHIN THE NORHAL OPERATING RANGE OF FIGURE RCP SEAL LEAKOFF
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EOP: TITLE:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT ECA-3.2 SATURATED RECOVERY DESIRED PAGE 24 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 30 Check Condenser Steam Dump Use intact S/G ARV for RCS Available CONDENSER VACUUM temperature control.
GREATER THAN 20 INCHES HG 31 Check Can Be IfEstablished:
RHR Normal Cooling
- a. RCS cold leg temperature - LESS a. Go to Step 32.
THAN 350'F
- b. RCS pressure - LESS THAN b. Go to Step 32.
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 32.
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)
0 EOP:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT
'ECA-3.2 SATURATED RECOVERY DESIRED PAGE 25 of 25 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: This procedure should be continued while obtaining CNMT hydrogen sample in Step 32.
32 Check CNMT Hydrogen Concentration:
- b. Hydrogen concentration - LESS b. Consult TSC to determine if THAN 0.5% hydrogen recombiners should be placed in service.
33 Check Core Exit T/Cs LESS Return to Step 2.
THAN 200'F 34 Evaluate Long Term Plant Status:
- a. Maintain cold shutdown conditions
- b. Consult TSC
-END-
EOP:
REV: 14 SGTR WITH LOSS OF REACTOR COOLANT
%CA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 ECA-3.2 APPENDIX LIST TITLE PAGES
- 1) RED PATH
SUMMARY
- 2) FIGURE MIN SUBCOOLING
- 3) FIGURE SDM
- 4) FIGURE TSAT
- 5) FIGURE RCP SEAL LEAKOFF
- 6) ATTACHMENT SFP-RWST
- 7) ATTACHMENT N2 PORVS
- 8) ATTACHMENT NC
- 9) ATTACHMENT SEAL COOLING
- 10) ATTACHMENT RCP START
- 11) ATTACHMENT D/G STOP
- 12) ATTACHMENT AUX BLDG SW
- 13) ATTACHMENT RUPTURED S/G
- 14) ATTACHMENT SD-1
- 15) ATTACHMENT SD-2
- 16) ATTACHMENT RHR COOL
- 17) FOLDOUT
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SGTR WITH LOSS OF REACTOR COOLANT REV: 14 ECA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 RED PATH
SUMMARY
- a. SUBCRITICALITY Nuclear power greater than 5%
- 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 [46%
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 14 SGTR WITH LOSS OF REACTOR COOLANT KCA-3.2 SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcool'ing Margin = Saturation Temperature From Figure Belov [-] 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 SUBCOOL ING 600 ADVERSE C NMT 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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REV 14 SGTR WITH LOSS OF REACTOR COOLANT SCA-3.2 SATURATED RECOVERY DESIRED 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 (PPH) 1800 BORON INCREMENTS 20 PPM 1600 1400 ADEQUATE SDH 1200 100 PPH CONSERVATISM INCLUDED 1000 800 600 400 200 BURNUP INCREMENTS 100 HWD/HTU 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 25 BURNUP (MWD/HTU)
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REV: 14
'ECA-3.2 SGTR WITH LOSS OF REACTOR COOLANT SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE TSAT SAT URATION PRESSURE (PSIG) 2500 2400 PRESSURE 2300 INCREMENTS 20 PSIG 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 TEMPERATURE 200 INCREMENTS 10'F 100 0
20 0 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE (')
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EOP: T!TLE REV: 14 SGTR WITH LOSS OF REACTOR COOLANT
+CA-3. 2 SATURATED RECOVERY DESIRED PAGE 1 of 1 FIGURE RCP SEAL LEAKOFF
¹1 SEAL LEAK RATE (GPM) 6 LEAK RATE INCREMENTS 0.2 GPM NORMAL OPERATING RANGE DP INCREMENTS 50 PSI 250 500 750 1000 1250 1500 1750 2000 2250 2500
¹I SEAL DP (RCS PRESS - VCT PRESS) PSI
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SGTR WITH LOSS OF REACTOR COOLANT REV 14
~ECA-3.2 SATURATED RECOVERY DESIRED 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 80%
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.
- 3. COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 28%, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.
- 4. LOSS OF EMERGENCY COOLANT RECIRCULATION CRITERION IF emergency coolant recirculation is established and subsequently lost, THEN go to ECA-1.1, JOSS OF EMERGENCY COOLANT RECIRCULATION, 'Step 1.
- 5. AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
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REV 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 27 RO ESTER GAS AND ELECTRIC CORPORATION GINNA STATION CON OLLED COPY NUMBER TEC ICAL REVIEW PORC REVIEW DATE PLANT UPERINTE ENT cg cg EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
~i EOP:
REV: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 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: 11 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+ R/hr.
1 Check Ruptured S/G Narrow Go to Step 8.
Range Level LESS THAN 67:
[55% 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 11B energized o Refer to Attachment RCP START
3 Check IF Normal PRZR Spray Available:
- 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: 11 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
- 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: 11 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 hT 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, STEAM GENERATOR TUBE RUPTURE, Step 21b
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REV 11 ECA-3.3 'SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 6 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- xx**x*x*xxx***%>xxxxxxxxx%x*xxx*******
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).
- x ** *************
x x**********
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 1.
THAN 5% (30< adverse CNMT]
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REV: 11 ECA-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:
- a. RCS subcooling based on core a. Do NOT stop SI pumps. Go to exit T/Cs - GREATER THAN O' ECA-3.1, SGTR WITH LOSS OF USING FIGURE MIN SUBCOOLING 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 l.
-OR-o Narrow range level in intact S/G - GREATER THAN 5% (25%
adverse'NMTj
- c. RVLIS indication c. SI pumps. Go to o Level (no RCPs) - GREATER Do NOT ECA-3 ',stop SGTR WITH LOSS OF REACTOR COOLANT - SUBCOOLED THAN 68% [73% adverse CNMT] RECOVERY DESIRED, Step 1.
-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: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 8 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 9 Stop SI Pumps and Place In AUTO
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REV 11 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 OS.
- 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 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 restore PRZR level
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REV'1 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 l.
o Level (no RCPs) - GREATER THAN 68% f73% adverse CNMT]
-OR-o Fluid fraction (any RCP rLInning) - 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: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 11 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 13 Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored: 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 ¹1 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 pumps
- 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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ECA-3.3 TlTLE:
SGTR WITHOUT PRESSURIZER PRESSURE CONTROL REV ll 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 for trains of AOV-371 and AOV-427 XY relays THEN consult TSC to determine excess letdown should be placed in if 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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EOP:
REV 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 13 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Check VCT Makeup System:
P
- 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
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-ill in MANUAL.
- 3) Increase RMW flow.
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REV: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 14'f 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: 11 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).
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: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 16 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check Should IfBe Seal Return Flow 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.
- 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:
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 19.
- f. Verify RCP ¹1 seal leakoff flow f. Refer to AP-RCP.1, RCP SEAL GREATER THAN 0.25 GPM MALFUNCTION.
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REV: 11 ECA-3.3 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 Should IfBe Emergency D/Gs Stopped:
- 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 System Contamination:
- a. Isolate reject from hotwell to a. IF hotwell level increasing, CST: THEN direct RP to sample hotwells for activity.
o Place hotwell level 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 11 ECA-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 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 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: 11 ECA-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 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-1 - COMPLETE
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REV: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 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 CNMTj 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]
~ 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: 11 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
- 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: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 22 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- x*xx x x x x x x x% x x% x CAUTION x*x x**********x***
RCS AND RUPTURED S/G PRESSURES MUST BE MAINTAINED LESS THAN THE RUPTURED S/G ARV SETPOINT.
- x ************ x x x x ************** x *******
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: 11 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.
174 (25'dverse 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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REV: 11 ECA-3.3 SGTR WITHOUT- PRESSURIZER PRESSURE CONTROL PAGE 24 of 27 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED
- 0' x x % x x x x @ **0 **x********x CAUTION
- x*****
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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.
- 0 x*% x 0*% x x w % x x 0** x****x********
NOTE: The upper head region may void during RCS depressurization if RCPs are not running. This may result in a rapidly increasing PRZR level.
32 Depressurize RCS And Ruptured S/G To 400 PSIG [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. Return to Step 31.
400 psig [300 psig adverse CNMTI
- c. Stop RCS depressurization
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REV: 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 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 CNMTj
- 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.
NOTE: Leakage from ruptured S/G into RCS will dilute RCS boron concentration.
34 Verify Adequate Shutdown Margin
- b. Verify boron concentration- b. Borate as necessary.
GREATER THAN REQUIREMENTS OF FIGURE SDM
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REV: 11 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% f85% adverse maintain RCS pressure at CNMTJ 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 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL 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. Go to Step 39.
o RCP 41 seal D/P - LESS THAN 220 PSID
-OR-o Check RCP seal leakage - LESS THAN 0.25 GPM
- c. Stop affected RCP(s) 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-
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EOP: TITLE REV: 11 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) ATTACHMENT RCP START
- 5) ATTACHMENT N2 PORVS
- 6) ATTACHMENT RUPTURED S/G
- 7) ATTACHMENT D/G STOP
- 8) ATTACHMENT SD-1
- 9) ATTACHMENT SEAL COOLING
- 10) ATTACHMENT SD-2
- 11) ATTACHMENT RHR COOL
- 12) ATTACHMENT AUX BLDG SW
- 13) FOLDOUT
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REV 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 1 RED PATH
SUMMARY
- a. SUBCRITICALITY Nuclear power greater than 5%
- 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% [464 adverse CNMT)
- c. HEAT SINK Narrow range level in all S/Gs less than 5%
[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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EOP: TITLE REV 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE: Subcooling Margin = Saturation Temperature From Figure Below [-j Core Exit T/C Indication RC S PRESSURE (PS IG) 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 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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REV: 11 ECA-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 turn on code BURNUP.
BORON CONCENTRATION (PPH) 1800 BORON INCREMENTS 20 PPM 1600 1400 ADEQUATE SDM 1200 100 PPM 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 (HWD/MTU)
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REV 11 ECA-3.3 SGTR WITHOUT PRESSURIZER PRESSURE CONTROL PAGE 1 of 1 FOLDOUT PAGE SI REINITIATION CRITERIA IF EITHER condition listed below occurs, THEN manually operate SI pumps as necessary and go to ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT SUBCOOLED RECOVERY DESIRED, Step 1:
o RCS subcooling based on core exit TCs LESS THAN O'F USING REQUIREMENTS OF FIGURE MIN SUBCOOLING OR o RVLIS level (no RCPs) LESS THAN 684 [734 adverse CNMT]
- 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.
- 3. COLD LEG RECIRCULATION SWITCHOVER CRITERION IF RWST level decreases to less than 28<, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.
- 4. AFW SUPPLY SWITCHOVER CRITERION IF CST level decreases to less than 5 feet, THEN switch to alternate AFW water supply (Refer to ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).
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