ML17250B107
| ML17250B107 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| ECA-1.1, NUDOCS 9004200666 | |
| Download: ML17250B107 (66) | |
Text
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV' PAGE 1 of 29 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE T SUPERINT ND NT 4 f"7 / < ~
EFFECTIVE DATE
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,l QA ~
NON-QA CATEGORY 1.0 REVIEWED BY:
~cyp04200bbb 5000>44 cj00409
~'(PDR PDQCN, 0 P
P
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION, REV:
5 PAGE 2 of 29 A.
PURPOSE This procedure provides actions to restore emergency coolant recirculation capability, to delay depletion of the RWST by adding makeup and reducing outflow, and to depressurize the RCS to minimize break flow.
B.
ENTRY CONDITIONS/SYMPTOMS l.
ENTRY CONDITIONS This procedure is entered from:
a.
E-l, LOSS OF REACTOR OR SECONDARY COOLANT, when cold leg recirculation capability cannot be verified.
b ~
ES 1 ~ 3 ~
TRANSFER TO COLD LEG RECIRCULATION/
when recirculation cannot be established or maintained.
c ~
ECA 1 ~ 2 g LOCA OUTSIDE CONTAINMENT g when a
LOCA outside containment cannot be isolated.
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ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 3 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF EMERGENCY COOLANT RECIRCULATION CAPABILITY IS RESTORED DURING THIS PROCEDURE, FURTHER RECOVERY ACTIONS SHOULD CONTINUE BY RETURNING TO PROCEDURE AND STEP IN EFFECT.
o IF SUCTION SOURCE IS LOST TO ANY SI OR CNMT SPRAY PUMP, THE PUMP SHOULD BE STOPPED.
NOTE:
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 If Emergency Coolant Recirculation Equipment Available:
RHR suction valves from sump B-OPERABLE
~ MOV-850A
~ MOV-850B o
RHR pump discharge to Rx vessel deluge valves - OPERABLE
~ MOV-852A
~ MOV-852B Manually, or locally try to restore at least one train (Refer to Attachment RHR SYSTEM to identify minimum components for one train).
~ MOV-738A
~ MOV-738B
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ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 4 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
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)
-OR-o Refer to Attachment SFP-RWST
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ECA-1.1 TITLE LOSS OF EMERGENCY COOLANT RECIRCULATION REV:, 5 PAGE 5 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Shutdown margin should be monitored during RCS cooldown (Refer to Figure SDM).
3 Initiate RCS Cooldown To Cold Shutdown:
- a. Establish and maintain cooldown rate in RCS cold legs
- LESS THAN 100'P/HR b.
Dump steam to condenser from intact S/G(s)
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open TDAPW pump steam supply valves.
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass valves.
- 2) Open 1A and 1B priming air ejector isolation valves.
~ V-3580
~ V>>3581 IP no intact S/G available, THEN use faulted S/G.
0
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 6 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Verify CNMT RECIRC Fans Running:
- a. All fans - RUNNING
- b. Charcoal filter dampers green status lights - EXTINGUISHED
- a. Manually start fans.
- b. Dispatch personnel with relay rack key to locally open dampers using trip relay pushbuttons in relay room racks.
~ AUX RELAY RACK RA-2 for fan A
~ AUX RELAY RACK RA-3 for fan C
5 Check RWST Level GREATER THAN 154 Go to Step 25.
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ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 7 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6
Determine CNMT Spray Requirements:
- a. Determine number of CNMT spray pumps required from table:
RWST LEVEL GREATER THAN 28X CNMT PRESSURE GREATER THAN 60 PSIG BETWEEN 28 PSIG AND 60 PSIG CNMT RECIRC PANS RUNNING 00R1 2
OR 3 CNMT SPRAY PUMPS REQUIRED ALL BETWEEN 15X AND 28X LESS THAN 28 PSIG GREATER THAN 60 PSIG BETWEEN 28 PSIG AND 60 PSIG LESS THAN 28 PSIG 0,-1, 2,
OR 3 ALL 0.
LESS THAN 15X b.
CNMT spray pumps running - EQUAL TO MINIMUM NUMBER REQUIRED
- b. Manually operate CNMT spray pumps as necessary.
IP CNMT spray pump(s) must be
- stopped, THEN place switch in PULL STOP.
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 8 of 29 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.
7 Reset SI If Necessary 8
Establish One Train Of SI Flow a.
SI pumps - LESS THAN THREE RUNNING a.
Stop one SI pump.
b.
RCS pressure
- LESS THAN 250 psig [465 psig adverse CNMT]
c.
RHR pump -
ONLY ONE RUNNING
- b. Stop RHR pumps and go to Step 9.
IR no RHR pumps running, THEN start one RHR pump.
9 Verify No Backflow From RWST To Sump:
a.
Any RHR suction valve from sump B -
OPEN
~ MOV-850A
~ MOV-850B
b.
RWST outlet valve to RHR pump suction (MOV-856) - CLOSED
- b. Manually close valve.
IF valve can NOT be closed
- manually, THEN direct AO to locally close valve.
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ECA-1. 1 TITLE LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 9 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Reset CI:
- a. Operate CI reset key switch
- b. Verify annunciator A-26, CNMT ISOLATION - EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Operate CI reset key switch.
11 Verify Adequate SW Flow:
a.
Check at least two SV pumps-RUNNING
- b. Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1)
- a. Manually start SW pumps as power supply permits (258 kw each).
IF less than two SV pumps
- running, THEN perform the following:
- 1) Ensure SV isolation.
- 2) Dispatch AO to establish normal shutdown alignment (Refer to Attachment SD-1) 3)
Go to Step 14.
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ECA-1.1 TITLE LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 10 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Establish IA to CNMT:
- a. Verify non-safeguards busses energized from offsite pover o
Bus 13 normal feed - CLOSED
-OR-o Bus 15 normal feed -
CLOSED
- b. Verify SW isolation valves to turbine building -
OPEN i'OV-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
Perform the folloving:
- 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 kv each).
IF
~N T, 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 pover 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.'1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 14.
WHEN IA restored, THEN do Steps 12e and f.
4
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE ll of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 13 Establish Required Charging Line Flow:
- a. Charging pumps
- ANY RUNNING
- b. Establish 20 gpm total charging flow a.
Perform the following:
- 1) IF CCW flow is lost to any
=
RCP thermal barrier OR any RCP fl seal outlet temperature offscale high, THEN dispatch AO with RWST area key to locally close seal in]ection needle valves to affected RCP:
~ RCP A, V-300A
~ RCP B, V-300B
- 2) Ensure HCV-142 demand at OX.
- 3) Start one charging pump.
h t'
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ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV' PAGE 12 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THE AFFECTED RCP(S)
SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
14 Check RCP Status:
a.
RCS subcooling based on core exit T/Cs - GREATER THAN O' USING FIGURE MIN SUBCOOLING a.
Stop all RCPs and go to Step 15.
b.
RCPs - AT LEAST ONE RUNNING
- b. Try to start an RCP:
- 1) Establish conditions for starting an RCP o
Bus llA or 11B energized o
Refer to Attachment RCP START
- c. Stop all but one RCP
- 2) Start one RCP.
0
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ECA-1.1 TITLE LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 13 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Check If SI Can Be Terminated:
a.
RCS subcooling based on core exit T/Cs - GREATER THAN 50'F USING FIGURE MIN SUBCOOLING
- b. Check RVLIS indication:
o Level (no RCPs)
- GREATER THAN 68X t73X adverse CNMT]
-OR-o Fluid fraction (any RCP running)
- GREATER THAN 80X Limit RCS in]ection flow to that required to remove decay heat:
o Determine required infection flow using Figure MIN RCS INJECTION o
Stop SI pumps as necessary to establish minimum required SI flow.
o IF required injection flow is less than 100 gpm, THEN establish required charging flow and go to Step 16.
IF required injection flow is greater than 100 gpm, THEN perform the following:
a.
Ensure one SI pump running
- b. Establish minimum charging flow for RCP seal injection.
(Locked valve key required.)
d.
Go to Step 18.
16 Stop SI And RHR Pumps And Place In Auto
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ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 14 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Verify SI Pump Suction Aligned To RWST:
a.
SI pump suction valves from BASTs -
CLOSED
~ MOV-826A
~ MOV-826B
~ MOV-826C
~ MOV-826D a.
Ensure at least one valve in each flow path closed.
~ MOV-826A or MOV-826B
~ MOV-826C or MOV-826D
- b. SI pump suction valves from RVST OPEN
~ MOV-825A
~ MOV-825B
- b. Ensure at least one valve is open.
- c. Consult TSC to determine if SI flush is required (Refer to Attachment SI FLUSH) 18 Verify Adequate RCS Makeup Flow:
a.
Check RVLIS indication:
o Level (no RCPs)
- GREATER THAN 68X [73X adverse CNMT]
-OR-
o Fluid fraction (any RCP running)
- GREATER THAN 80X
- b. Core exit T/Cs - STABLE OR DECREASING
- b. Increase RCS injection flow to maintain core exit T/Cs stable or decreasing.
0
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ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 15 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Depressurize RCS To Decrease RCS Subcooling:
a.
Check RCS subcooling based on core exit T/Cs - GREATER THAN 20'F USING FIGURE MIN SUBCOOLING a.
Go to Step 20.
b.
Use normal PRZR spray
- b. IF normal spray NOT available, THEN use one PRZR PORV.
IF IA NOT available, THEN refer to Attachment N2 PORVS.
- c. Depressurize RCS until either of the following conditions satisfied:
IF no PRZR PORV available, THEN use auxiliary spray valve (AOV-296).
o RCS subcooling based on core exit T/Cs - LESS THAN 10'F USING FIGURE MIN SUBCOOLING
-OR-o PRZR level - GREATER THAN 87%
[75% adverse CNMTJ
- d. Stop RCS depressurization
~
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 16 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 20 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'P b.
RCS pressure
- LESS THAN 400 psig [300 psig adverse CNMT]
- c. Place letdown pressure controller in MANUAL CLOSED a.
Go to Step 21.
b.
Go to Step 21.
d.
Check 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)
- e. Verify pressure on PI-135 - LESS THAN 400 PSIG
- f. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OP THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
- d. Perform the following:
- 1) Reset both trains of XY relays for AOV-371 and AOV-427.
- 2) Open AOV-371 and AOV-427.
- 3) Open one letdown orifice valve.
e.
Go to Step 21.
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ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 17 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 21 Check If SI ACCUMs Should Be Isolated:
- a. Both RCS hot leg temperatures
'ESS THAN 400'F
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865
- a. Continue with Step 22.
@HEN both RCS hot leg temperatures less than 400'R, THEN do Steps
- 21b, c and d.
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
- d. Locally reopen breakers for MOV-841 and MOV-865
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
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ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 18 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 22 Check If RCPs Must Be Stopped:
a.
RCPs - ANY RUNNING
- b. Check the folloving:
o RCP gl seal D/P - LESS THAN 220 PSID a.
Go to St'ep 23.
b.
Go to Step 23.
-OR-o Check RCP seal leakage
- LESS THAN 0.25 GPM
- c. Stop affected RCP(s) 23 Check Core Exit T/Cs-GREATER THAN 200'F Go to Step 38.
24 Check RWST Level LESS THAN
'eturn to Step 1.
15'
0
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ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 19 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 25 Minimize RWST Outflow:
a.
Any SI pump(s)
- RUNNING
- a. IF charging pump suction aligned to RUST, THEN perform the following:
- 1) Verify SI pump suction aligned to RVST, MOV-825A or MOV-825B open.
- 2) Start one SI pump and verify flow.
- b. Stop all but one SI pump
- c. Check charging pump suction from RVST (AOV-112B) - OPEN
- d. Stop all charging pumps e.
Stop both CNMT spray pumps
- f. Stop both RHR pumps
- 3) Stop running charging pumps.
4)
Go to Step 25e.
c.
Go to Step 25e.
26 Check SI pump flow STABLE IF SI flow zero or erratic, THEN stop running SI pump.
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ECA-1.,1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:, 5 PAGE 20 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION BAST DILUTION MAY HAVE OCCURRED DURING SI PUMP SUCTION SWAPOVER FROM BASTS TO RWST.
IF DILUTION IS SUSPECTED, BASTS SHOULD BE SAMPLED.
27 Try To Add Makeup To RCS From VCT:
a.
Check VCT level - GREATER THAN 5X b; Verify charging pumps aligned to VCT o
LCV-112C -
OPEN o
LCV-112B -
CLOSED
- c. Start charging pumps as necessary to establish two pumps running a.
Stop charging pumps taking suction from VCT and continue
- with Step 28.
WHEN VCT level greater than 5X, THEN do Steps 27b and c.
,. b. Manually align valves as necessary.
0
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ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 21 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 28 Establish Maximum VCT Makeup:
a.
Check RMV control armed
- RED LIGHT LIT b'. Check VCT level - LESS THAN 20X c.
Check VCT makeup system-OPERATING IN AUTO
- a. Place RMW mode switch in AUTO and place RMV control switch to START.
- b. Continue with Step'9.
@HEN VCT level less than 20X, THEN do Steps
- 28c, d and e.
- c. Perform the following:
- 1) Open makeup system valves.
~ AOV-110B
~ AOV-llOC
~ AOV-ill
- d. Increase VCT makeup flow
- 1) Start both M6l pumps
- 2) Start both boric acid pumps
- 3) Adjust Rl6l controller (HC-ill) in MANUAL to 80 gpm
- 4) Ad)ust boric acid flow controller (HC-llOA) in MANUAL to 9 gpm
- e. Adjust charging pump speed to stabilize VCT level
- 2) Start BA transfer pumps and RMW pumps.
- 3) Open boric acid flow control valve (AOV-110A).
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ECA-1 ~ 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV' PAGE 22 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 29 Try To Add Makeup To RCS From Alternate Source:
~ MOV-841
~ MOV-865 IF valves were closed to prevent SI ACCUM nitrogen injection, THEN go to Step 34.
IF NOT, THEN perform the following:
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C b.
Open SI ACCUM discharge valves.
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ECA-1 '
TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 23 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 31 Depressurize All Intact S/Gs To 785 PSIG:
a.
Check S/G pressures
- GREATER THAN 785 PSIG b.
Dump steam to condenser at maximum rate a.
Go to Step 32.
'I
- b. Manually or locally dump steam at maximum rate from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply valves to TDAFW pump
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass valves.
- 2) Open priming air e)ector steam isolation valves c.
Check S/G pressures
- LESS THAN 785 PSIG
- d. Stop S/G depressurization
~ V-3580
~ V-3581
- c. Return to Step 31b.
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ECA-1. 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 24 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
The intent of Step 32 is to depressurize S/Gs more slowly, but at a rate that will maintain required RVLIS level.
32 Depressurize Intact S/Gs To 200 PSIG Slowly To Inject SI ACCUMs:
a.
Dump steam to condenser as necessary to maintain appropriate RVLIS indication:
o Level (no RCPs)
- BETVEEN 68X AND 73X [73% AND 76X adverse CNMT]
-OR-o Fluid fraction (any RCP running) - BETVEEN 80X AND 90%
- a. Manually or locally dump steam from intact S/G(s) to maintain appropriate RVLIS indication:
o Use S/G ARVs
-OR-o Open steam supply valves to TDAFV pump
-OR-o Dispatch AO to perform the following:
- 1) Open affected S/G MSIV bypass valve.
- 2) Open priming air ejector steam isolation valves
- b. Check S/G pressures
- LESS THAN 200 PSIG
- c. Stop S/G depressurization
~ V-3580
~ V-3581
- b. Return to Step
- 32a,
l
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ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 25 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 33 Check If SI ACCUMs Should Be Isolated:
- a. Both RCS hot leg temperatures-LESS THAN 400'P
~ MOV-841, MCC C position 12P
~ MOV-865, MCC D position 12C
- c. Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865
- d. Locally reopen breakers for MOV-841 and MOV-865
- a. Continue with Step 34.
VHRN both RCS hot leg temperatures less than 400'P, THEN do Steps
- 33b, c and d.
- c. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
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ECA-1. 1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 26 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 34 Check If RCPs Must Be Stopped:
a.
- ANY RUNNING b.
Check the following:
o RCP gl seal D/P - LESS THAN 220 PSID a.
Go to Step 36.
b.
Go to Step 36.
-OR-o Check RCP seal leakage
- LESS THAN 0.25 GPM
- c. Stop affected RCP(s) 35 Check SI pump flow STABLE IF SI flow zero or erratic, THEN stop running SI pump.
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ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 27 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 36 Depressurize All Intact.'/Gs To Atmospheric Pressure:
- a. Maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR b.
Dump steam to condenser
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply valves to TDAFW pump
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV bypass valves.
- 2) Open priming air effector steam isolation valves
~ V-3580
~ V-3581
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ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 28 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 37 Check If RHR Normal Cooling Can Be Established:
a.
RCS cold leg temperature
- LESS THAN 350'P
- a. Return to Step 35.
b.
RCS pressure
- LESS THAN 400 psig [300 psig adverse CNMT]
- c. Place letdown pressure controller in MANUAL CLOSED
- d. Check 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)
- e. Verify pressure on PI-135 - LESS THAN 400 PSIG
- f. Place RCS overpressure protection system in service (Refer to 0-7, ALIGNMENT AND OPERATION OP THE REACTOR VESSEL OVERPRESSURE PROTECTION SYSTEM)
- b. Return to Step 35.
- d. Perform the following:
- 1) Reset both trains of XY relays for AOV-371 and AOV-427.
- 2) Open AOV-371 and AOV-427.
- 3) Open one letdown orifice valve.
- e. Return to Step 36.
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ECA-1 ~ 1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 29 of 29 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 38 Maintain RCS Heat Removal:
a.
Use RHR system if in service b.
Dump steam to condenser from intact S/Gs
- b. Manually or locally dump steam from intact S/G(s):
o Use S/G ARVs
-OR-o Open steam supply valves to TDAPV pump
-OR-o Dispatch AO to perform the following:
- 1) Open S/G MSIV by'pass valves.
- 2) Open priming air e5ector steam isolation valves
~ V-3580
~ V-3581 IP no intact S/G available and RHR system NOT in service, THEN use faulted S/G.
39 Consult TSC
-END-
EOP:
ECA-1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 1 of 1 ECA-1.1 APPENDIX LIST TITLE PAGES 1)
FIGURE MIN SUBCOOLING 2)
FIGURE SDM 3)
FIGURE 'MIN RCS INJECTION 4)
ATTACHMENT RHR COOL 5)
ATTACHMENT SFP-RWST 6)
ATTACHMENT RCP START 7)
ATTACHMENT SD-1 8)
ATTACHMENT CNMT RECIRC FANS
')
ATTACHMENT RHR SYSTEM 10)
ATTACHMENT N2 PORVS 11)
ATTACHMENT SI FLUSH
EOP:
ECA-1.1 TlTLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below I-] Core Exit T/C Indication S
PRESSURE (PSIG)
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
20 RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION INADEQUATE SUBCOOLING REGION E CNMT RS TEMPERATURE INCREMENTS 10'F NORMAL CNMT 0
250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV:
5 PAGE 1 of 1 FIGURE 'SDM BORON CONCENTRATION (PPM) 1800 1600 BORON INCREMENTS 20 PPM 1400 1200 ADEQUATE SDM 1000 soo 600 400 ORA 200 BURNUP INCREMENTS 100 MWD/MTU 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CYCLE BURNUP (MVD/MTU)
NOTE: To obtain core burnup, use PPCS turn on code BURNUP.
EOP:
ECA-1.1 TITLE:
LOSS OF EMERGENCY COOLANT RECIRCULATION REV 5
PAGE 1 of 1 FIGURE MIN RCS INJECTION REQURIED INJECTION FLOW RATE (GPM) 350 300 250 200 150 100 50 INADEQUATE INJECTION FLOW 10 100 1000 TIME FROM REACTOR TRIP (MINUTES) 10000
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