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{{#Wiki_filter:REGUL1t' | {{#Wiki_filter:REGUL1t'NFORMATION DISTRIt3UT YSTEM(RIDS)ACCESSION NBR:8509100061-DOC~DATE:85/09/04NOTARIZED:= | ||
NODOCKET''ACIL'.50. | |||
410NineMilePointNuclear"Stationi Unit2E:NiagaraMoha05000410AUTHI,NAME AUTHORAFFILIATION MANGANECO-Vs= | |||
NiagaraMohawks,Power Corp'.RECIPONAMEt RECIPIENT: | |||
AFFILIATION BUTLER'S'j1t | |||
~'icensing. | |||
Branch2"SUBJECT!ForwardsFSARchangesrequested bySinghChanges.providedtocloseoutSEROpenI.teip"12'.re'lternate) shutdowncapability.. | |||
FuturetamendofFSARwillincorpot'ate changes;DISTRIBUTION CODE:S001DCOPIESRECEIVEDILiTR J'NCLJ.01ZE:l"'p'ITLE".Licensing Submittal0'SAR/FSAR Amdts8,RelatedCo>re'spondence NOTES:RECIPIENT IDCODE/NAtlEl NRR/OL/ADL NRR"LB2'ACOPIESRECIPIENT LTTRENCLi.IDCODE/NAME' 0NRRLB2BC10HAUGHEYiM 01COPIESLT'TRENCL"101l~INTERNAL: | |||
ACRS41ELO/HDS3>> | |||
IE/DEPER/EPB 36'RRROE'AL'RR/DE/CEB 11'RR/OE/EQB 131NRR/DE/MEB 18NRR/DE/SAB 24NRR/DHFS/HFEB40. | |||
NRR/DHFS/PSRB NRR/OSI"/AEB | |||
'26NRR/OSI/CPB 10NRR/DSI/ICSB 16NRR/DSI'/PSB19NRR/DSI/RSB 23>>RGN1EXTERNAL: | |||
?4XDMB/OSS(AMOTS).NRCPDR02!PNLiGRUEL'ER66101~1"1122"1111<<1111111111111311.111111ADA/LFMBIE".FILE'E/DQAVT/QAB21 NRR/DE/AEAB NRR/DE/EHEB NRR/DE/GB 28NRR/DE/MTEB 17NRR/DE/SGEB 25NRR/DHFS/LQB 32"NRR/DL/SSPB NRR/DSI/ASB NRR/DSI/CSB 09'RR/DSI/METB 12"NRR'AB22'4RM/ODAMI/MI BBNL(AMOTS ONLY)LPOR'03~NSIC050"1.1~11101121111111101'11111111011111"1TOTALNUMBEROFCOPIESREQUIRED: | |||
LTTR52ENCL' IivpIkr<<k(4~<<'l-4'("'Irgvr"44'"IlI"<<'(v,"iYtlr4&4<<<<444vI(f4Irk<<4~4g~I'f)Vf<<4<<vlY,f4V4F4k,~HTVvIj LITNIIINRAAVMOHAWKNIAGARAMOHAWKPOWERCORPORATION/300 ERIEBOULEVARD WEST,SYRACUSE. | |||
N,Y.13202/TELEPHONE (315)474-1511September 4,1985(NMP2L0486)Mr.WalterButler,ChiefLicensing BranchNo.2U.S.NuclearRegulatory Commission Washington, OC20555 | |||
==DearMr.Butler:== | ==DearMr.Butler:== | ||
Re:NineMilePointUnit2DocketNo.50- | Re:NineMilePointUnit2DocketNo.50-410Enclosedarechangesrequested byMr.Singhofyourstaff.ThechangesareprovidedtocloseoutSafetyEvaluation ReportOpenItem12.Thesechangeswillbeincorporated intoafutureamendment oftheFinalSafetyAnalysisReport.Verytrulyyours,C.V.ManganSeniorVicePresident BB/rlaEnclosure 0925Gxc:R.A.Gramm,NRCResidentInspector ProjectFile(2)8509i'00061 850904'PDRADOCK050004i0E'.PDR' | ||
NineMilePointUn'AR7.4SYSTEMSREQUIREDFORSAFESHUTDOWN7.4. | NineMilePointUn'AR7.4SYSTEMSREQUIREDFORSAFESHUTDOWN7.4.1Description Thissectiondiscusses theinstrumentation andcontrolsofthefollowing systemswhichcanbeusedforsafeplantshutdown: | ||
~0 4kResonAsshownonFSARFigure9B.4-2, | 1.Reactorcoreisolation coolingsystem(RCIC).2.Standbyliquidcontrolsystem{SLCS).3.RHRshutdowncoolingmode(RSCM).4.Remoteshutdownsystem{RSS).Thesourcesthatsupplypowertothesafeshutdownsystemsoriginate fromonsiteac/dcsafety-related buses.RefertoChapter8foracompletediscussion ofthesafety-related powersources.7.4.1.1ReactorCoreIsolation CoolingSystemSstemFunctionTheRCICsystemisdesignedtoassurethatsufficient reactorwaterinventory ismaintained inthereactorvesselthusassuringcontinuity ofcorecooling.Reactorvesselwaterismaintained orsupplemented byRCICsystemduringthefollowing conditions: | ||
1.Whenthereactorvesselisisolatedandmaintained inthehotstandbycondition. | |||
Whenthereactorvesselisisolatedandaccompanied byalossofnormalcoolantflowfromthereactorfeedwater system.Whenacompleteplantshutdownunderconditions oflossofnormalfeedwater systemisstartedbeforethereactorisdepressurized toalevelwherethereactorshutdowncoolingmodeoftheRHRsystemcanbeplacedintooperation. | |||
Sstem0erationSchematic arrangements ofsystemmechanical equipment andinstrumentation andadescription ofsystemdesignandoperation areprovidedinSectionS.4.6.Theinstrumentation specifications arelistedinTable7.4-1'.ThecontrollogicisshownonFigure7.4-1.7.4-1 | |||
~0 4kResonAsshownonFSARFigure9B.4-2,theapproachusedforNMP2issimilartothatdescribed above.Thereactoriseithermanuallyorautomatically scramed.Thenoneoffourtrainsareusedtoprovidemakeupwateranddecayheatremoval.EitherHPCSorRCICisusedforhighpressuremakeup.IfablowdownweretooccureitherthroughtheADSorreliefvalves,makeupwouldbeprovidedusingthelowpressure systems(LPCSorLPCI);Additionally, decayheatremovalisprovidedbytheRHRsystem.Intheeventofafireinthecontrolroomorrelayroomwhichforcesevacuation ofthecontrolroom,sufficient equipment toenablehotandcoldshutdownisprovidedattheremoteshutdownpanels(FSARSection7.4)andthroughtheuseoflocalcontrol.Viability ofthesecircuitsisassuredbytheuseoftransferswitcheswhicnelectrically isolatethecontrolroomandtransfercontroltothelocalpanelsandtheremoteshutdownpanels.Redundant andisolatedfusesareprovided(intheemergencyswitchgear rooms)tomaintainthepowersourcetothesecircuits. | |||
12.Thedescription ofthesystemsorportionsthereofusedtoprovidetheshutdowncapability andmodifications requiredtoachievealternate shutdowncapability ifrequired. | |||
~ResenseAppendix98andSection7.4oftheFSARprovidedescriptions oftheshutdownsystemsandmodifications andalternate shutdowncapability fromtheremoteshutdownroom. | |||
ATTACHMENT le0Hih/LowPressureInterfaces SternBoundaries OER-Reactor BuildingEquipment Drain2OER~V128 MSS-MainSteam2MSS*MOV112 2MSS+HYV6A,B,C,D 2HSS+HYV7A,B,C,D RHS-ResidualHeatRemoval2RHS*MOV22A, B2RHSAOV80A, B2RHS*MOV113 2RHS*MOV67A,B 2RHS*MOV32A,B WCS-ReactorWaterCleanup2WCS-MOV106 2WCS-MOV107 2WCS-AOV26A,B,C,O 2WCS-AOV28A,B,C,O 2WCS-AOV29A,B,C,O 2WCS-AOV30A,B,C,O 2WCS-AOV44A,B,C,D 2WCS-AOV51A,B,C,O 2WCS-AOV52A,B,C$ | |||
02WCS-AOV53A,B,C,O 2WCS-AOV54A,B,C,O 2WCS-AOV61A,B,C,O Notes:DescritionWCSDrainValveMainSteamDrainMainSteamIsolation HainSteamIsolation SteamSupplytoRHS*ElSteamSupplytoRHS*ElShutdownCoolingSuctionShutdownCoolingReturnRHS*ElReturntoICSDraintoLiquidWasteDraintoMainCondenser Demineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Oemineralizer Vent/Drain Resolution Note1Note1Note3Note3Note1Note1Note1Note1Note1Note1Note1Note2Note2Note2Note2Note2Note2Note2Note2Note2Note21)2)3)Atleastonevalveisde-energized anddisconnected frompowersource(breakeropen)duringnormalplantoperation. | |||
Nosinglefirecouldcausesufficient spuriousoperations toviolatethehigh/lowpressureinterface inthisflowpathsincethesevalvesarecontrolled fromlocalpanelswhicharelocatedinaseparatefireareafromthecontrolroom.Thesevalvesarenormallyopen.Intheeventofacontrolroomfire,asdefinedbytheAppendixRcriteria, theyareclosedbytheoperatorandsubsequently disconnected fromtheir.powersourcetoensurenospuriousoperation. | |||
@II'l~}} | @II'l~}} | ||
Revision as of 02:51, 29 June 2018
| ML18038A051 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 09/04/1985 |
| From: | MANGAN C V NIAGARA MOHAWK POWER CORP. |
| To: | BUTLER W Office of Nuclear Reactor Regulation |
| References | |
| (NMP2L-0486), (NMP2L-486), NUDOCS 8509100061 | |
| Download: ML18038A051 (10) | |
Text
REGUL1t'NFORMATION DISTRIt3UT YSTEM(RIDS)ACCESSION NBR:8509100061-DOC~DATE:85/09/04NOTARIZED:=
NODOCKETACIL'.50.
410NineMilePointNuclear"Stationi Unit2E:NiagaraMoha05000410AUTHI,NAME AUTHORAFFILIATION MANGANECO-Vs=
NiagaraMohawks,Power Corp'.RECIPONAMEt RECIPIENT:
AFFILIATION BUTLER'S'j1t
~'icensing.
Branch2"SUBJECT!ForwardsFSARchangesrequested bySinghChanges.providedtocloseoutSEROpenI.teip"12'.re'lternate) shutdowncapability..
FuturetamendofFSARwillincorpot'ate changes;DISTRIBUTION CODE:S001DCOPIESRECEIVEDILiTR J'NCLJ.01ZE:l"'p'ITLE".Licensing Submittal0'SAR/FSAR Amdts8,RelatedCo>re'spondence NOTES:RECIPIENT IDCODE/NAtlEl NRR/OL/ADL NRR"LB2'ACOPIESRECIPIENT LTTRENCLi.IDCODE/NAME' 0NRRLB2BC10HAUGHEYiM 01COPIESLT'TRENCL"101l~INTERNAL:
ACRS41ELO/HDS3>>
IE/DEPER/EPB 36'RRROE'AL'RR/DE/CEB 11'RR/OE/EQB 131NRR/DE/MEB 18NRR/DE/SAB 24NRR/DHFS/HFEB40.
NRR/DHFS/PSRB NRR/OSI"/AEB
'26NRR/OSI/CPB 10NRR/DSI/ICSB 16NRR/DSI'/PSB19NRR/DSI/RSB 23>>RGN1EXTERNAL:
?4XDMB/OSS(AMOTS).NRCPDR02!PNLiGRUEL'ER66101~1"1122"1111<<1111111111111311.111111ADA/LFMBIE".FILE'E/DQAVT/QAB21 NRR/DE/AEAB NRR/DE/EHEB NRR/DE/GB 28NRR/DE/MTEB 17NRR/DE/SGEB 25NRR/DHFS/LQB 32"NRR/DL/SSPB NRR/DSI/ASB NRR/DSI/CSB 09'RR/DSI/METB 12"NRR'AB22'4RM/ODAMI/MI BBNL(AMOTS ONLY)LPOR'03~NSIC050"1.1~11101121111111101'11111111011111"1TOTALNUMBEROFCOPIESREQUIRED:
LTTR52ENCL' IivpIkr<<k(4~<<'l-4'("'Irgvr"44'"IlI"<<'(v,"iYtlr4&4<<<<444vI(f4Irk<<4~4g~I'f)Vf<<4<<vlY,f4V4F4k,~HTVvIj LITNIIINRAAVMOHAWKNIAGARAMOHAWKPOWERCORPORATION/300 ERIEBOULEVARD WEST,SYRACUSE.
N,Y.13202/TELEPHONE (315)474-1511September 4,1985(NMP2L0486)Mr.WalterButler,ChiefLicensing BranchNo.2U.S.NuclearRegulatory Commission Washington, OC20555
DearMr.Butler:
Re:NineMilePointUnit2DocketNo.50-410Enclosedarechangesrequested byMr.Singhofyourstaff.ThechangesareprovidedtocloseoutSafetyEvaluation ReportOpenItem12.Thesechangeswillbeincorporated intoafutureamendment oftheFinalSafetyAnalysisReport.Verytrulyyours,C.V.ManganSeniorVicePresident BB/rlaEnclosure 0925Gxc:R.A.Gramm,NRCResidentInspector ProjectFile(2)8509i'00061 850904'PDRADOCK050004i0E'.PDR'
NineMilePointUn'AR7.4SYSTEMSREQUIREDFORSAFESHUTDOWN7.4.1Description Thissectiondiscusses theinstrumentation andcontrolsofthefollowing systemswhichcanbeusedforsafeplantshutdown:
1.Reactorcoreisolation coolingsystem(RCIC).2.Standbyliquidcontrolsystem{SLCS).3.RHRshutdowncoolingmode(RSCM).4.Remoteshutdownsystem{RSS).Thesourcesthatsupplypowertothesafeshutdownsystemsoriginate fromonsiteac/dcsafety-related buses.RefertoChapter8foracompletediscussion ofthesafety-related powersources.7.4.1.1ReactorCoreIsolation CoolingSystemSstemFunctionTheRCICsystemisdesignedtoassurethatsufficient reactorwaterinventory ismaintained inthereactorvesselthusassuringcontinuity ofcorecooling.Reactorvesselwaterismaintained orsupplemented byRCICsystemduringthefollowing conditions:
1.Whenthereactorvesselisisolatedandmaintained inthehotstandbycondition.
Whenthereactorvesselisisolatedandaccompanied byalossofnormalcoolantflowfromthereactorfeedwater system.Whenacompleteplantshutdownunderconditions oflossofnormalfeedwater systemisstartedbeforethereactorisdepressurized toalevelwherethereactorshutdowncoolingmodeoftheRHRsystemcanbeplacedintooperation.
Sstem0erationSchematic arrangements ofsystemmechanical equipment andinstrumentation andadescription ofsystemdesignandoperation areprovidedinSectionS.4.6.Theinstrumentation specifications arelistedinTable7.4-1'.ThecontrollogicisshownonFigure7.4-1.7.4-1
~0 4kResonAsshownonFSARFigure9B.4-2,theapproachusedforNMP2issimilartothatdescribed above.Thereactoriseithermanuallyorautomatically scramed.Thenoneoffourtrainsareusedtoprovidemakeupwateranddecayheatremoval.EitherHPCSorRCICisusedforhighpressuremakeup.IfablowdownweretooccureitherthroughtheADSorreliefvalves,makeupwouldbeprovidedusingthelowpressure systems(LPCSorLPCI);Additionally, decayheatremovalisprovidedbytheRHRsystem.Intheeventofafireinthecontrolroomorrelayroomwhichforcesevacuation ofthecontrolroom,sufficient equipment toenablehotandcoldshutdownisprovidedattheremoteshutdownpanels(FSARSection7.4)andthroughtheuseoflocalcontrol.Viability ofthesecircuitsisassuredbytheuseoftransferswitcheswhicnelectrically isolatethecontrolroomandtransfercontroltothelocalpanelsandtheremoteshutdownpanels.Redundant andisolatedfusesareprovided(intheemergencyswitchgear rooms)tomaintainthepowersourcetothesecircuits.
12.Thedescription ofthesystemsorportionsthereofusedtoprovidetheshutdowncapability andmodifications requiredtoachievealternate shutdowncapability ifrequired.
~ResenseAppendix98andSection7.4oftheFSARprovidedescriptions oftheshutdownsystemsandmodifications andalternate shutdowncapability fromtheremoteshutdownroom.
ATTACHMENT le0Hih/LowPressureInterfaces SternBoundaries OER-Reactor BuildingEquipment Drain2OER~V128 MSS-MainSteam2MSS*MOV112 2MSS+HYV6A,B,C,D 2HSS+HYV7A,B,C,D RHS-ResidualHeatRemoval2RHS*MOV22A, B2RHSAOV80A, B2RHS*MOV113 2RHS*MOV67A,B 2RHS*MOV32A,B WCS-ReactorWaterCleanup2WCS-MOV106 2WCS-MOV107 2WCS-AOV26A,B,C,O 2WCS-AOV28A,B,C,O 2WCS-AOV29A,B,C,O 2WCS-AOV30A,B,C,O 2WCS-AOV44A,B,C,D 2WCS-AOV51A,B,C,O 2WCS-AOV52A,B,C$
02WCS-AOV53A,B,C,O 2WCS-AOV54A,B,C,O 2WCS-AOV61A,B,C,O Notes:DescritionWCSDrainValveMainSteamDrainMainSteamIsolation HainSteamIsolation SteamSupplytoRHS*ElSteamSupplytoRHS*ElShutdownCoolingSuctionShutdownCoolingReturnRHS*ElReturntoICSDraintoLiquidWasteDraintoMainCondenser Demineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Oemineralizer Vent/Drain Demineralizer Vent/Drain Oemineralizer Vent/Drain Oemineralizer Vent/Drain Resolution Note1Note1Note3Note3Note1Note1Note1Note1Note1Note1Note1Note2Note2Note2Note2Note2Note2Note2Note2Note2Note21)2)3)Atleastonevalveisde-energized anddisconnected frompowersource(breakeropen)duringnormalplantoperation.
Nosinglefirecouldcausesufficient spuriousoperations toviolatethehigh/lowpressureinterface inthisflowpathsincethesevalvesarecontrolled fromlocalpanelswhicharelocatedinaseparatefireareafromthecontrolroom.Thesevalvesarenormallyopen.Intheeventofacontrolroomfire,asdefinedbytheAppendixRcriteria, theyareclosedbytheoperatorandsubsequently disconnected fromtheir.powersourcetoensurenospuriousoperation.
@II'l~