ML17250B125
| ML17250B125 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| FR-H.1, NUDOCS 9004200739 | |
| Download: ML17250B125 (60) | |
Text
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FR-H.1 TITLE:
RESPONSE
TO LOSS OF SECONDARY HEAT SINK REV:
8 PAGE 1 of 26 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
/4
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N SUPERINTEN E T cf co EFFE TI E DATE GII~WASTATION QA )~ NON-QA CATEGORY 1.0 e
REVIEWED BY:
C ',-"LETED:
DAtE
, 9004200739 9004l0
'DR ADOCK 05000244
'P PNUQ TIME'
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RESPONSE
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PAGE 2 of 26 A.
PURPOSE This procedure provides actions for responding to a loss of secondary heat sink in both S/Gs.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, when minimum AFW flow is not verified.
b.
F-0.3, HEAT SINK Critical Safety Function Status Tree on a RED condition.
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8 PAGE 3 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF TOTAL PEED FLOW IS LESS THAN 200 GPM DUE TO OPERATOR ACTION, THIS PROCEDURE SHOULD NOT BE PERFORMED.
o PEED FLOW SHOULD NOT BE REESTABLISHED TO A FAULTED S/G IP A NON-FAULTED S/G IS AVAILABLE.
NOTE:
Adverse CNMT values should be used whenever CNMT pr'essure is greater than 4-psig or CNMT radiation is greater than 10
~ R/hr.
1 Check If Secondary Heat Sink Is Required:
a.
RCS pressure
- GREATER THAN ANY NON-PAULTED S/G PRESSURE
IF RWST level less than 28X, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.
This Step continued on the next page.
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8 PAGE 4 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED (Step 1 continued from previous page) b.
Check the following:
o RCS cold leg temperature-GREATER THAN 350'F o
RCS pressure
- GREATER THAN 400 psig [300 psig adverse CNMT]
- b. Try to place RHR System in service while continuing with this procedure:
- 1) Reset SI if necessary.
- 2) Place letdown pressure controller in MANUAL CLOSED.
- 3) Check the following valves-OPEN:
~ AOV-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx
~ At least one letdown orifice valve (AOV-200A, AOV-200B, or AOV-202)
- 4) IF pressure on PI-135 less than 400 psig, THEN establish RHR normal cooling (Refer to Attachment RHR COOL).
IF adequate cooling with RHR system established, THEN return to procedure and step in effect; 2
Monitor Secondary Heat Sink:
o Verify both S/G wide range levels - GREATER THAN 35 inches
[110 inches adverse CNMT]
o Verify PRZR pressure
- LESS THAN 2335 PSIG Perform the following:
- a. Trip both RCPs.
b.
Go to Step ll to initiate bleed and feed cooling.
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PAGE 5 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 3
Try to Establish AFW Flow To At Least One S/G:
a.
Check MCB indications for cause of AFW failure:
- 1) Verify CST level - GREATER THAN 5 PEET
- 2) Verify busses supplying power to MDAPV pumps
- ENERGIZED
~ Bus 14
~ Bus 16
- 3) Check AFW valve alignment o
AFV pump discharge valves OPEN
~ MOV-4007
~ MOV-4008
~ MOV-3996 o
TDAFW pump flow control valves OPEN
~ AOV-4297
~ AOV-4298 b.
Check AFW pumps
- ALL RUNNING
- c. Check total flow to S/Gs-GREATER THAN 200 GPM
- d. Return to procedure and step in effect
- 1) Refer to ER-AFV.l, ALTERNATE VATER SUPPLY TO APW PUMPS.
- 2) Continue attempts to restore power to MDAFV pumps.
- 3) Dispatch AO to locally align valves as necessary.
- b. Perform the following:
- 1) Manually start MDAFV pumps.
- 2) Check TDAFW pump steam supply valves OPEN.
~ MOV-3504A
~ MOV-3505A
- 3) If necessary dispatch AO to locally reset TDAPV pump governor valve.
- c. Continue attempts to restore AFV flow and go to Step 4.
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PAGE 6 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Stop Both RCPs
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NOT OBTAINED CAUTION IF OPFSITE POWER IS LOST AFTER SI RESET, SELECTED SW PUMPS AND ONE CCW PUMP VILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION VILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
5 Try To Establish MFW Flow To At Least One S/G:
a.
Check condensate system:
o Condensate pump - ANY RUNNING o
MFV pump suction pressure-GREATER THAN 185 PSIG
- b. Reset SI if necessary
- c. Reset feedwater isolation,
- d. Establish MPW flow:
- 1) Check MFW pump discharge valves - CLOSED
- 2) Verify MPW flow control bypass valve - OPERABLE
- 4) Verify S/G blowdown key switches in NORMAL
- 5) Ensure one MFV pump recirc valve - OPEN
- 6) Start selected MFW pump
- 7) Open MFV pump discharge valve
- a. IP offsite power available, THEN try to place condensate system in service.
IF NOT, THEN go to Step 6.
- d. IF MFV flow can NOT be established, THEN go to Step 6.
e.
- 8) Open MPV flow control bypass valves as necessary to restore S/G level 1
Go to Step 9
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PAGE 8 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 6
Establish SAFW Flow:
- a. Perform the following:
- 1) Align SAFV system for operation (Refer to Attachment SAFV)
- 2) Start both SAFW pumps
- 3) Verify SAFW total flow-GREATER THAN 200 GPM
- a. IF greater than 200 gpm, total SAFV flow can NOT be established, THEN go to Step 7.
b.
Go to Step 9
7 Establish Condenser Steam Dump Pressure Control:
- a. Verify condenser available:
o Any MSIV -
OPEN o
Annunciator G-15, STEAM DUMP
- LIT a.
Place S/G ARV controllers in AUTO at desired pressure and go to Step 8.
- b. Adjust condenser steam dump controller HC-484 to desired pressure and verify in AUTO
- c. Place steam dump mode selector switch to MANUAL
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PAGE 9 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED CAUTION FOLLOWING BLOCK OF AUTOMATIC SI ACTUATION,'ANUALSI ACTUATION MAY BE REQUIRED IF CONDITIONS DEGRADE.
NOTE: If auxiliary spray is in use, spray flow may be increased by closing normal charging valve AOV-294 and normal PRZR spray valves.
8 Try To Establish Feed Flow From Condensate System:
a.
Check condensate pumps - ANY RUNNING
- b. Establish condensate flowpath (Refer to Attachment COND TO S/G)
- c. Depressurize RCS to less than 1950 psig:
- 1) Deenergize PRZR heaters
- 2) Check letdown - IN SERVICE
- 3) Depressurize using auxiliary spray valve (AOV-296) d.
WHEN RCS pressure less than 1950 psig, THEN perform the following:
- 1) Block SI 2)
Dump steam to condenser at maximum rate to depressurize at least one S/G to less than 380 psig
- e. Verify condensate flow to S/Gs
- a. IF offsite power available, THEN manually start at least one condensate pump., IF a condensate pump can NOT be
- started, THEN go to Step 10.
b.
Go to Step 10.
- 2) Use one PRZR PORV.
IF IA NOT available, THEN refer to Attachment N2 PORVS.
IF PORV NOT available, THEN use auxiliary spray valve, AOV-296 and go to Step 8d.
- 2) Manually or locally dump steam using intact S/G ARV.
e.
Go to Step 10.
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PAGE 10 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 9
Check S/G Levels:
- a. Narrow range level in at least one S/G - GREATER THAN 5X [25X adverse CNMT]
- b. Return to procedure and step in effect
- a. IF feed flow verified to at least one S/G, THEN maintain flow to restore narrow range level greater than 5X [25X adverse CNMT].
IF NOT verified, THEN go to Step 10.
10 Verify Secondary Heat Sink:
a.
Check the following:
o Both S/G wide range levels-GREATER THAN 35 inches
[110 inches adverse CNMT]
o PRZR pressure
- LESS THAN 2335 PSIG a.
Perform the following:
- 1) Trip both RCPs.
2)
Go to Step 11 to initiate bleed and feed cooling.
- b. Return to Step 1
CAUTION STEPS 11 THROUGH 13 MUST BE PERFORMED QUICKLY IN ORDER TO ESTABLISH RCS HEAT REMOVAL BY RCS BLEED AND FEED.
ll Actuate SI and CI
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8 PAGE 11 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED CAUTION WHEN BAST LEVEL DECREASES TO 10X, THEN SI PUMP AUTOMATIC SWITCHOVER TO RWST SHOULD BE ENSURED.
12 Verify RCS Feed Path:
a.
Check SI pumps
- AT LEAST ONE RUNNING b.
Check valve alignment for operating SI pumps -
PROPER EMERGENCY ALIGNMENT Manually start pumps and align valves as necessary to establish RCS feed path.
IF a feed path can NOT be established, THEN continue attempts to establish feed flow.
Return to Step 3.
13 Establish RCS Bleed Path:
a.
Open both PRZR PORV block valves a.
Ensure power to MCCs supplying block valves.
~
MCC C for MOV-515
~
MCC D for MOV-516
- b. Place both PRZR PORV switches to OPEN IF any block valve can NOT be
- opened, THEN dispatch AO to locally check breaker:
~ MOV-515, MCC C position 6C
~ MOV-516, MCC D position 6C
- c. Align RCS overpressurization nitrogen system to open both PRZR PORVs (Refer to Attachment N2 PORVS)
- c. IF BOTH PRZR PORVs can NOT be
- opened, THEN perform the following:
- 1) Ensure both PORV switches in OPEN.
2)
Go to Step 14.
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PAGE 12 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF OFFSITE POWER IS LOST AFTER SI RESET, SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G.
MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
14 Check If SI Can Be Reset:
a.
Check the following:
o PRZR pressure
- LESS THAN 1750 PSIG
-OR-o Either steamline pressure-MESS THAN 514 PSIG
- a. IF PRZR pressure stable or increasing, THEN reset SI and go to Step 15.
IF PRZR pressure decreasing, THEN perform the following:
1)
WHEN PRZR pressure less than 1750 psig, THEN reset SI.
- b. Reset SI 2)
Go to Step 15.
15, Reset CI:
a.
Operate CI reset key switch
- b. Verify annunciator A-26, CONTAINMENT ISOLATION-EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Operate CI reset key switch.
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PAGE 13 of 26 STEP ACTION/EXPECTED RESPONSE
'RESPONSE NOT OBTAINED 16 Verify Adeguat:e SW Flow To CCW Hx:
- a. Verify at least tvo SV pumps-RUNNING
- b. Verify AUX BLDG SV isolation valves - AT LEAST ONE SET OPEN
~ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- a. Manually start pumps as pover supply permits (258 kv each).
IR less than two SW pumps can be
- operated, THEN go to Step 19.
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PAGE 14 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Establish IA to CNMT:
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed CLOSED
-OR-o Bus 15 normal feed -
CLOSED
- b. Verify turbine building SW isolation valves OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- c. Verify at least two air compressors
- RUNNING d.
Check IA supply:
o Pressure
- GREATER THAN 60 PSIG o
Pressure
- STABLE OR INCREASING e.
Reset both trains of XY relays for IA to CNMT AOV-5392
/
- a. Perform the following:
- 1) Close non-safeguards bus tie breakers:
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie
- 2) Verify adequate emergency D/G capacity to run air compressors (75 kw each).
IF NOT, THEN evaluate if CNMT RECIRC fans should be stopped (Refer to Attachment CNMT RECIRC FANS).
3)
WHEN bus 15 restored, THEN reset control room lighting.
- b. Manually align valves.
- c. Manually start air compressors as power supply permits (75 kw each).
IF air compressors can NOT be started, THEN dispatch AO to locally reset compressors as necessary.
- d. Perform the following:
- 1) Continue attempts to restore IA (Refer to AP-IA.l, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 19.
WHEN IA restored, THEN do Steps 17e, f and 18.
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PAGE 15 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 18 Restore RCS Overpressurization Nitrogen System To Standby:
- a. Verify instrument bus D-ENERGIZED
- b. Place relief valve PC-431 and PC-430 arming switches to BLOCK
~ SOV-8619A
~ SOV-8619B
- a. Perform the 'following:
- 1) Ensure steam dump mode control in MANUAL.
- c. Close SURGE TK VLVs
~ SOV-8616A
~ SOV-8616B
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8 PAGE 16 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED NOTE:
PRZR PORVs may close temporarily until adequate IA'pressure is restored in CNMT.
19 Verify Adequate RCS Bleed Path BOTH PRZR PORVS OPEN IF PRZR PORVs can NOT be opened, THEN perform the following:
a.
Open Rx vessel head vents.
~ SOV-590
~ SOV-591
~ SOV-592
~ SOV-593
- b. Depressurize at least one intact S/G to atmospheric pressure using S/G ARV.
- c. Align any available low pressure water source to the depressurized S/Gs.
CAUTION THE RCS BLEED PATH MUST BE MAINTAINEDEVEN IF RCS PRESSURE REMAINS GREATER THAN SI PUMP SHUTOFF HEAD.
20 Maintain RCS Heat Removal:
o Maintain SI flow o
Maintain both PRZR PORVs and block valves -
OPEN
I N
N J
I'
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8 PAGE 17 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 21 Check Normal Power Available To Charging Pumps:
o Bus 14 normal feed breaker-CLOSED o
Bus 16 normal feed breaker-CLOSED Verify adequate emergency D/G capacity to run charging pumps (75 kw each).
IF NOT, THEN evaluate if CNMT RECIRC fans can be stopped (Refer to Attachment CNMT RECIRC FANS).
l
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8 PAGE 18 of 26 STEP ACTION/EXPECTED RESPONSE
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NOT OBTAINED 22 Check If Charging Flow Has.
Been Established:
- a. Charging pumps - ANY RUNNING
- a. Perform the following:
- 1) IF CCW flow is lost to any RCP thermal barrier OR any RCP gl seal outlet temperature offscale high, THEN dispatch AO with key to RWST gate to locally 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. Align charging pump suction to RWST:
o LCV-112B - OPEN o
LCV-112C -
CLOSED
- b. IF LCV-112B can NOT be opened, THEN perform the following:
- 1) Verify charging pump A NOT running and place in PULL STOP.
- c. Start charging pumps as necessary and establish maximum charging flow
- 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).
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PAGE 19 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF RWST LEVEL DECREASES TO LESS THAN 28%,
THEN THE SI SYSTEM SHOULD BE ALIGNED FOR COLD LEG RECIRCULATION USING STEPS 1
THROUGH 13 OF ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.
o IF CONTAINMENT PRESSURE INCREASES TO GREATER THAN 28 PSIG, CONTAINMENT SPRAY SHOULD BE VERIFIED.
23 Continue Attempts To Establish Secondary Heat Sink In At Least One S/G:
~ AFW flow
~ Main FW flow
~ Standby AFW flow
~ Condensate flow 24 Check For Adequate Secondary Heat Sink:
a.
Check narrow range level in at least one S/G - GREATER THAN 5%
[25% adverse CNMT]
- b. Ad5ust S/G ARV controllers to existing S/G pressure
- a. Return to Step 23.
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8 PAGE 20 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IP THE RCS IS WATER SOLID, THEN ANY INCREASE IN RCS TEMPERATURE MAY RESULT IN A SIGNIFICANT RCS PRESSURE INCREASE.
RCS HEATUP SHOULD BE PREVENTED.
25 Monitor RCS Temperatures:
o Core exit T/Cs - DECREASING o
RCS hot leg temperatures-DECREASING Perform the following:
- a. Control steam dump and feed flow to establish natural circulation and stabilize RCS temperature.
- b. Return to Step 23.
26 Check CCW Pumps ANY RUNNING Perform the following:
- a. IF any RCP fl 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
- b. Manually start one CCW pump (124 10w).
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PAGE 21 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF RCS IS SOLID, THEN TERMINATION OP PEED AND BLEED MAY RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS INFLOV AND OUTFLOV ARE CAREFULLY CONTROLLED.
27 Check If One Of Three SI Pumps Should Be Stopped:
- a. Three SI pumps
- RUNNING b.
RCS subcooling based on core exit T/Cs - GREATER THAN 35'F
[90'F adverse CNMT] USING FIGURE MIN SUBCOOLING c.
Check PRZR level - GREATER THAN 13%
[40% adverse CNMT]
- d. Stop one SI pump a.
Go to Step 28.
b.
Check the following:
o RCS pressure greater than 1625 psig [1825 psig adverse CNMT]
o RCS subcooling based on core exit T/Cs greater than O' using Figure MIN SUBCOOLING IF NOT, THEN go to Step 30.
c.
Do NOT stop SI pump.
Go to Step 30.
'1 0
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8 PAGE 22 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 28 Check If One Of Two SI Pumps Should Be Stopped:
a.
Two SI pumps - RUNNING
- b. Determine required RCS subcooling from table:
a.
Go to Step 29.
Charging Pump Availability NONE ONE TWO THREE RCS Subcooling Criteria 120'P [200'F adverse CNMT]
115'F [190'F adverse CNMT]
105'P [180'P adverse CNMT]
100'F [175'F adverse CNMT]
c.
RCS subcooling based on core exit T/Cs - GREATER THAN VALUE FROM TABLE ABOVE USING FIGURE MIN SUBCOOLING d.
PRZR level - GREATER THAN 13X
[40X adverse CNMT]
e.
Stop one SI pump
- c. Check the following:
o RCS pressure greater than 1625 psig
[1825 psig adverse CNMT]
o RCS subcooling based on core exit T/Cs greater than O'P using Figure MIN SUBCOOLING IP NOT, THEN go to Step 30.
d.
Do NOT stop SI pump.
Go to Step 30.
N N
lf 0
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PAGE 23 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 29 Check If Last SI Pump Should Be Stopped:
a.
One SI pump - RUNNING
- b. Check the folloving:
o RCS subcooling based on core exit T/Cs greater than O' using Figure MIN SUBCOOLING o
RCS pressure greater than 1625 psig [1825 psig adverse CNMT]
c.
PRZR level - GREATER THAN 13X
[40X adverse CNMT]
- d. Stop running SI pump e.
Go to Step 31 a.
Go to Step 31.
b.
Go to Step 30.
c.
Do NOT stop SI pump.
Go to Step 30.
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PAGE 24 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
After closing a PORV, it may be necessary to wait for RCS pressure to increase to permit stopping SI pumps in Steps 27, 28 and 29.
30 Check PRZR PORV Status:
a.
PRZR PORVs - ANY OPEN b.
PRZR PORVs -
BOTH OPEN
- a. Close any open Rx vessel head vent valves and go to appropriate plant procedure:
o IF RWST level greater than
- 28X, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step l.
-OR-o IF RWST level less than 28%,
THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.
- b. IF PRZR level greater than 75X
[65X adverse CNMT], THEN perform the following:
- 1) Establish excess letdown as follows:
o Place AOV-312 to NORMAL.
o Ensure CCW pump running.
o Ensure CCW from excess letdown Hx open (AOV-745).
o Open excess letdown isolation valve AOV-310.
This Step continued on the next page.
o Slowly open HCV-123.
- 2) Stop all but one charging pump and decrease charging flow to as necessary to control RCS pressure.
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8 PAGE 25 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 30 continued from previous page)
- c. Close one open PRZR PORV
- c. Close PORV block valve.
IF block valve can NOT be
- closed, THEN go to appropriate plant procedure:
o IF RWST.level greater than
- 28K, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step l.
-OR-
- d. Return to Step 27 o
IF RWST level less than 28X, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.
CAUTION IF RCS IS SOLID, CLOSURE OF PORVS WILL RESULT IN RAPID RCS PRESSURE INCREASE UNLESS RCS INFLOW AND OUTFLOW ARE CAREFULLY CONTROLLED.
- I 31 Check PRZR PORVs And Rx Close all PRZR PORVs and Rx vessel Vessel Head Vent Valves ALL head vent valves.
IF any PRZR PORV CLOSED can NOT be closed, THEN manually close its block valve.
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8 PAGE 26 of 26 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 32 Check If RHR Pumps Should Be Stopped:
a.
Check RCS pressure:
- 1) Pressure
- GREATER THAN 250 psig [465 psig adverse CNMT]
- 2) Pressure
- STABLE OR INCREASING
- b. Stop RHR pumps and place in AUTO a.
Go to appropriate plant procedure:
o IF RWST level greater than
- 28X, THEN go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step l.
-OR-o IF RWST level less than 28X, THEN go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step l.
33 Start Charging Pumps As Necessary And Control Charging Flow To Maintain PRZR Level 34 Go To ES 1
1 I SI TERMINATIONg Step 8
-END-
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PAGE 1 of 1 FR-H.1 APPENDIX LIST TITLE PAGES 1)
FIGURE MIN SUBCOOLING 2)
ATTACHMENT CNMT RECIRC FANS 3)
'ATTACHMENT COND TO S/G 4)
ATTACHMENT N2 PORVS 5)
ATTACHMENT SD-1 6)
ATTACHMENT RHR COOL 7)
ATTACHMENT SAFW 8)
ATTACHMENT AUX BLDG SW
EOP:
FR-H. 1 TITLE:
RESPONSE
TO LOSS OF SECONDARY HEAT SINK REV 8
PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION ADVERS NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'P 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('P)
e 0
II p
EOP:
ATT EOP/AP ATTACHMENTS REV 1
PAGE 1 of 1 ATTACHMENT COND TO S
G FLOW THROUGH MFW PUMP B
1.
Supt.
Date~~iO 2.
At, main control board place MFW Pump B discharge valve switch to open (MOV-3976).
3.
When MFW pump B discharge valve indicates open, direct AO to open breaker for S/G FWP DISCH VLV 1B, MCC B position 8G.
4.
Ensure condensate trim valve controller demand at zero.
5.
Open MFW flow control valve or bypass valve as necessary to restore S/G level.
6.
Start additional condensate pumps as required.
FLOW THROUGH MFW PUMP A 1.
2.
At main control board, place MFW Pump A discharge valve switch to OPEN (MOV-3977).
3.
When MFW pump A discharge valve indicates open, direct AO to open breaker S/G FWP DISCH VLV 1A, MCC A position 9J.
4.
Ensure condensate trim valve controller demand at zero.
5.
Open MFW flow control valve or bypass valves as necessary to restore S/G level.
6.
Start additional condensate pumps as recpxired.
\\'~
EOP:
ATT TITLE:
EOP/AP ATTACHMENTS REV:
1 PAGE 1 of 2 ATTACHMENT RUPTURED S
G Supt.
( LIX Date NOTE:
Intermediate Building environment should assessed for radio-logical and other personnel safety concerns.
PART A.
Dispatch AO with locked valve key to complete local isolation of ruptured S/G as follows:
o Verify ruptured S/G MSIV bypass valve shut (INT BLDG steam header area).
o S/G A, V-3615 o S/G B, V-3614 o
Locally close the following steam valves from the 'ruptured S/G:
o Steam to sampling system valve (INT BLDG steam header. area)
S/G A close V-3413A S/G B close V-3412A o Support heating steam valve (INT BLDG steam header area)
S/G A close V-3669 S/G B close V-3668 o Upstream trap isolation valve (TURB BLDG near MFW reg vlvs)
S/G A close V-3521 S/G B close V-3520 CAUTION Control Room should be notified before isolating TDAFW pump flow.
o Locally cXose TDAFW pump manual feedwater isolation valve to
, ruptured S/G (INT BLDG steam header area):
o S/G A, V-4005 o S/G B, V-4006 o
Bypass condensate polishing demineralizers as follows:
1)
Place AVT bypass valve controller in MANUAL (east end of AVT panel) 2)
Open bypass valve 3)
Place all AVT bed 4 position selector switches to OFF.
o Locally place turbine building wall fan switches to close.
-I J
, 6 r