ML17262A891
| ML17262A891 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/06/1992 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17262A884 | List: |
| References | |
| ES-1.3, NUDOCS 9206160402 | |
| Download: ML17262A891 (44) | |
Text
EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 1 of 18 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT E FEC IVE DATE CATEGORY 1.0 REVIEWED BY: 920bfb0402 92050b PDR ADOCK 05000244 p PDR j,W 4W, lt EOP: ES-1.3 LITLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 2 of 18 A.PURPOSE-This procedure provides the necessary instructions for transferring the Safety Injection system and Containment Spray system to recirculation modes of operation.
B.ENTRY CONDITIONS/SYMPTOMS 1.ENTRY CONDITIONS
-This procedure may be entered from: a.E-1, LOSS OF REACTOR OR SECONDARY COOLANT, or, b.ECA-0.2, LOSS OF ALL AC POWER WITH SI REQUIRED, or, c.ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF ALL STEAM GENERATORS, or, d.FR-C.1, RESPONSE TO INADEQUATE CORE COOLING, or, e.FR-C.2, RESPONSE TO DEGRADED CORE COOLING, or, ll f.FR-C.3, RESPONSE TO SATURATED CORE COOLING, or, g.FR-H.l, RESPONSE TO LOSS OF SECONDARY HEAT SINK, or, h.FR-Z.1, RESPONSE TO HIGH CONTAINMENT PRESSURE, on low RWST level.i.Other procedures whenever RWST level reaches the switchover setpoint (284).
~I f' EOP: ES-1'TITLE: TRANSFER TO COLD LEG RECIRCULATION REV'4 PAGE 3 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION o INJECTION FLOW TO THE RCS MUST BE MAINTAINED AT ALL TIMES.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 CONSULT WITH HEALTH PHYSICS BEFORE DISPATCHING PERSONNEL TO AUXILIARY BUILDING.*****************************************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+O5 R/hr.1 Verify CNMT Sump B Level-GREATER THAN 113 INCHES IF RWST level is less than 28%AND CNMT sump B level is less than 113 inches, THEN go to ECA-1.2, LOCA OUTSIDE CONTAINMENT, Step 1~NOTE: Steps 2 through 8 should be performed without delay.FR procedures should not be implemented prior to completion of these steps.2 Reset SI C~~l" E~
EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 4 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Establish SW System Alignment For RHR Sump B Recirculation:
a.Veri'fy at least two SW pumps RUNNING a.Start additional SW pumps as power supply permits (258 kw each)b.Verify AUX BLDG SW isolation valves-OPEN~MOV-4615 and MOV-4734~MOV-4616 and MOV-4735 IF D/Gs supplying emergency AC busses, THEN shed non-essential loads as necessary~Rx compartment cooling fans~Control rod shroud fans~PRZR heaters~Charging pumps b.Establish SW to AUX BLDG (Refer to Attachment AUX BLDG SW).~c.Dispatch AO to verify total SW flow to CCW Hxs-GREATER THAN 5000 GPM c.Perform the following:
1)Isolate SW to screenhouse and air conditioning" headers.~MOV-4609 and MOV-4780~MOV-4663 and MOV-4733 2)Direct AO to locally adjust total SW flow to the CCW Hxs to between 5000 gpm and 6000 gpm (V-4619 and V-4620).3)Direct AO to locally isolate SW return from SFP Hxs:~SFP Hx A (V-4622)~SFP Hx B (V-8689)4)Verify SW portions of Attachment SD-1 are complete.
<<I II EOP: ES-1-3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV'4 PAGE 5 of 18 STEP ACTION/EXPECTED RESPONSE.RESPONSE NOT OBTAINED 4 Establish CCW flow to RHR Hxs: a.Check both CCW pumps-RUNNING b.Manually open CCW valves to RHR Hxs a.Start CCW pumps as power supply permits (124 kw each).b.Dispatch AO to locally open valves.~MOV-738A~MOV-738B*****************************************CAUTION CONSULT WITH HEALTH PHYSICS BEFORE DISPATCHING PERSONNEL TO AUXILIARY BUILDING.5 Check RHR Flow: o Both RHR pumps-RUNNING o RHR flow (FI-626)-LESS THAN<SP-L.10)'ER OPERATING PUMP Manually adjust RHR Hx outlet valves equally to reduce flow to less than<SP-L.10)per operating pump.~HCV-624 B RHR Hx~HCV-625 A RHR Hx IF flow can NOT be reduced manually, THEN dispatch an AO to locally adjust RHR Hx outlet manual valves equally to reduce flow.~V-715 B RHR Hx~V-717 A RHR Hx
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EOP: ES-1'T!TLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 6 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION ANY PUMPS TAKING SUCTION FROM RWST SHOULD BE STOPPED UPON REACHING RWST LO-LO LEVEL ALARM.6 Check ZF Unnecessary Pumps, Can Be Stopped: a.Three SI pumps-RUNNING a.Go to Step 6c.b.Stop SI pump C and place both switches in PULL STOP c.Both CNMT spray pumps-RUNNING d.Pull stop one CNMT spray pump e.Stop both RHR pumps and place in PULL STOP c.Pull stop any idle CNMT spray pump and go to Step 6e.
4~f IONA EOP: ES-1.3 T~SFER TO COLD LEG RECIRCULATION REV 14 PAGE 7 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Verify RHR System Alignment:
a.Verify the following valves CLOSED o RHR suction valves from loop A hot leg~MOV-700~MOV-701 a.Ensure at least one suction valve and one discharge valve closed.o RHR discharge valves to loop B cold leg~MOV-720~MOV-721 b.Verify RHR pump suction crosstie valves-OPEN~MOV-704A~MOV-704B b.Manually open valves.If valves can NOT be opened, THEN dispatch AO to locally open valves.c.Verify the following valves OPEN o RHR pump discharge to Rx vessel deluge valves~MOV-852A~MOV-852B c.Ensure at least one valve in each set open.o RHR suction from sump B (inside CNMT)~MOV-851A~MOV-851B d.Verify RCDT pump suction valves from sump B-CLOSED d.Manually close valves.~MOV-1813A~MOV-1813B rg gl 4 4 Wt r , i'Jl'mt EOP: ES-1.3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 8 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION RHR FLOW INDICATED ON FI-626 SHOULD BE LIMITED TO 1500 GPM PER OPERATING PUMP TO ENSURE OPTIMUM PUMP PERFORMANCE.
8 Initiate RHR Sump Recirculation:
a.Close RWST outlet valve to RHR pump suction, MOV-856 (turn on DC power key switch)b.Open both RHR suction valves from sump B (outside CNMT).o MOV-850A-OPEN o MOV-850B-OPEN c.Start both RHR pumps d.Verify at least one RHR pump-RUNNING a.Dispatch AO to locally close valve and continue with Step 8b.b.IF two RHR pump suction paths from sump B can NOT be established, THEN perform the following:
1)Initiate only one train of RHR recirculation (Refer to Attachment RHR NPSH for further guidance).
2)Go to Step 9.d.IF no RHR pump can be started,~THEN go to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1.NOTE: The TSC should be requested to establish periodic monitoring of the AUX BLDG sub-basement, as radiological conditions permit, to monitor RHR pump operation.
9 Check RWST Level-LESS THAN 154 DO NOT continue with this procedure until RWST level is less than 15%.
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EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 9 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 10 Stop All Pumps Supplied From RWST: a.Stop all SI pumps and place in PULL STOP b.Stop all charging pumps c.Stop operating CNMT spray pump and place in PULL STOP d.Check CNMT pressure-LESS THAN 28 PSIG d.Go to Step 11.e.Reset CNMT spray if necessary f.Close CNMT spray pump discharge valves~MOV-860A~MOV-860B~MOV-860C~MOV-860D I~~'r EOP: ES-1.3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 10 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Align SI And CNMT Spray For Sump Recirculation:
a.Verify SI pump suction valves from BASTs-CLOSED~MOV-826A and MOV-826B~MOV-826C and MOV-826D a.Ensure at least one valve in each flowpath closed.b.Close and verify closed RWST outlet valves to SI and CNMT spray pumps (turn on DC power key switches)~MOV-896A~MOV-896B b.Ensure at least one valve closed.c.Close and verify closed SI pump RECIRC valves c.Ensure at least one valve closed.~MOV-898~MOV-897 d.Verify SI pump suction valves from RWST-OPEN d.Ensure at least one valve open.~MOV-825A~MOV-825B e.Open and verify open RHR Hx outlet valves to SI and CNMT spray pump suction~MOV-857A~MOV-857B~MOV-857C e.Ensure at least one RHR pump(s)aligned to SI and CS pump suction header (Refer to Attachment RHR SYSTEM).
1~t ve wt e ltlh'1 EOP: ES-1'TITLE: TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 11 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION SI PUMPS SHOULD BE STOPPED IF RCS PRESSURE IS GREATER THAN THEIR SHUTOFF HEAD PRESSURE.*****************************************NOTE: SI pump C is preferred since it delivers to both lines.12 Verify Adequate RHR Injection:
'Core exit T/Cs-LESS THAN REQUIREMENTS OF FIGURE RHR INJECTION Start one SI pump.o RCS pressure-LESS THAN 225 psig[425 psig adverse CNMT]o Check RVLIS level (no RCPS)GREATER THAN 43%[46%adverse CNMT]
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EOP: ES-1.3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 12 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION IF A CNMT SPRAY PUMP IS STARTED, THEN CNMT PRESSURE SHOULD BE CLOSELY MONI'ADORED.
CNMT PRESSURE SHOULD NOT BE REDUCED TO LESS THAN 32 PSIG.13 Check If CNMT Spray Is Required: a.CNMT pressure-GREATER THAN 37 PSIG a.Perform the following:
1)IF CNMT spray previously actuated, THEN consult TSC to redetermine if CNMT spray should be restarted.
b.Verify open CNMT spray pump discharge valves~MOV-860A~MOV-860B~MOV-860C~MOV-860D 2)Go to Step 14.b.Manually open valve(s)for selected pump.~MOV-860A or MOV-860B, A pump~MOV-860C or MOV-860D, B pump c.Start selected CNMT spray pump d.Open NaOH tank outlet valves for running pump~AOV-836A, pump A~AOV-836B, pump B e.WHEN CNMT pressure decreases to 32 psig, THEN PULL STOP CNMT spray pump
'I'1 l~Vg EOP: ES-1'71TLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 13 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 Verify Adequate Core Cooling: o Core exit T/Cs-STABLE OR DECREASING o RVLIS level (no RCPs)-STABLE OR INCREASING o RVLIS level (no RCPs)-GREATER THAN 43%[46%adverse CNMT]IF both RHR pumps running, THEN ensure two SI pumps running.IF only one RHR pump running, THEN perform the following:
a.Ensure one SI pump running.b.WHEN CNMT spray pumps stopped, THEN start one additional SI pump.*****************************************CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).*****************************************NOTE: TDAFW pump flow control valves fail open on loss of IA.15 Check Intact S/G Levels: a.Narrow range level-GREATER THAN 5%[25%adverse CNMT)b.Control feed flow to maintain narrow range level between 17%[25%adverse CNMT]and 50%a.Maintain total feed flow greater than 200 gpm until narrow range level greater than 5%[25%adverse CNMT]in at least one AS/G.
l'1 4~~~VV%'W' EOP: ES-1'TITLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 14 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 16 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: 1)Check IA to CNMT-AVAILABLE 1)Go to Step 16d.2)Verify at least one control rod shroud fan-RUNNING 2)Manually start one fan as power supply permits (45 kw)3)Verify one Rx compartment cooling fan-RUNNING 3)Perform the following:
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
EOP: ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 15 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check If Emergency D/Gs Should Be Stopped: a.Verify AC emergency busses energized by offsite power: o Emergency D/G output breakers OPEN a.Try to restore offsite power (Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).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)
CP li EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV'4 PAGE 16 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 18 Check If SI ACCUMs Should Be Isolated: a.Both RCS hot leg temperatures LESS THAN 4004F b.Dispatch AO with locked valve key to locally close breakers for SI ACCUM discharge valves~MOV-841, MCC C position 12F~MOV-865, MCC D position 12C c.Close SI ACCUM discharge valves~ACCUM A, MOV-841~ACCUM B, MOV-865 a.Continue with Step 19.WHEN both RCS hot leg temperatures less than 400'F, THEN do Steps 18b through 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.
l EOP: ES-1.3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 17 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED*****************************************CAUTION IF FUEL DAMAGE IS SUSPECTED>
MAINTAIN S/G PRESSURE SLIGHTLY GREATER THAN RCS PRESSURE.19 Check If Intact S/Gs Should Be Depressurized To RCS Pressure: a.RCS pressure-LESS THAN INTACT S/G PRESSURES b.Check S/G radiation-NORMAL o Steamline Monitors (R-31, R-32)a.Go to Step 20.b.Do,NOT dump steam from'S/G with high radiation.
Isolate feed flow to a S/G with high radiation.
o Direct HP to sample S/Gs for activity c.Dump steam to condenser from intact S/G(s)until S/G pressure less than RCS pressure c.IF steam dump to condenser NOT available, THEN dump steam using intact S/G ARVs until S/G pressure less than RCS pressure.20 Consult TSC to Determine If Rx Vessel Head Should Be Vented NOTE: The TSC should be consulted before changing recirculation lineups.21 Check Event Duration-GREATER THAN 19 HOURS AFTER EVENT INITIATION Consult TSC to evaluate long term plant status.22 Place CNMT Spray Pumps In PULL STOP l%J'~C EOP: ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 18 of 18 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Verify Two SI Pumps-RUNNING Manually start pumps.24 Check Core Exit T/Cs-LESS THAN REQUIREMENTS OF FIGURE RHR INJECTION Perform the following:
a.Manually open both PRZR PORVs and block valves.b.Verify core exit T/Cs decreasing to less than requirements of Figure RHR INJECTION.
IF NOT, THEN dump steam from intact S/Gs until core exit T/Cs less than required.25 Consult TSC To Evaluate Long Term Plant Status-END-0~
EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 1 of 1 ES-1.3 APPENDIX LIST TITLE PAGES 1)RED PATH
SUMMARY
2)FIGURE RHR INJECTION 3)ATTACHMENT D/G STOP 4)ATTACHMENT SD-1 5)ATTACHMENT SD-2 6)ATTACHMENT RHR NPSH 7)ATTACHMENT RHR SYSTEM 8)ATTACHMENT AUX BLDG SW 9)FOLDOUT l~r EOP: ES-1.3 TRANSFER TO COLD LEG RECIRCULATION REV: 14 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[464 adverse CNMT]c.HEAT SINK-Narrow range level in all S/Gs less than 54[254 adverse CNMT]AND total feedwater flow less than 200 gpm d.INTEGRITY-Cold leg temperatures decrease greater than 100'F in last 60 minutes AND RCS cold leg temperature less than 285'F e.CONTAINMENT
-CNMT pressure greater than 60 psig 0 I4,~'I~'
EOP: ES-F 3 TITLE: TRANSFER TO COLD LEG RECIRCULATION REV 14 PAGE 1 of 1 CORE EXIT TEMPERATURE (F)600 TEMPERATURE INCREMENTS 10'F 550 FIGURE RHR INJECTION 500 450 400 INITIATE HIGH HEAD INJECTION 350 300 250 200 10 RHR INJECTION ADEQUATE 20 30 40 CONTAINMENT PRESSURE (PSIG)CNMT PRESSURE INCREMENTS 1 PSIG 50 60
EOP: ES-1'TRANSFER TO COLD LEG RECIRCULATION REV: 14 PAGE 1 of 1 FOLDOUT PAGE 1.SI REINITIATION CRITERIA IF EITHER condition listed below occurs, THEN operate SI pumps manually as necessary:
o Core exit TCs-GREATER THAN REQUIREMENTS OF FIGURE RHR INJECTION OR o, RVLIS level-LESS THAN 43~[46%adverse CNMT]2.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).