ML17244A555: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
Line 17: | Line 17: | ||
=Text= | =Text= | ||
{{#Wiki_filter:}} | {{#Wiki_filter:UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterof.RochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant,UnitNo.1)DocketNo.50-244APPLICATIONFORAMENDMENTTOOPERATINGLICENSEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGas1andElectricCorporation("RG&E"),holderofProvisionalOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecifica-tionTable3.5-2setforthinAppendixAtothatlicensebeamendedinaccordancewithNRCBulletin79-06A,todeletethepressurizerlowlevelcoincidencefromlowpressurizerpressureSafetyInjectionsignal.Theproposedtechnical'pecificationchangeissetforthinAttachmentAtothisApplication.AsafetyevaluationissetforthinAttachmentB.Thisevaluationalsodemonstratesthattheproposedchangedoesnotinvolveasignificant,changeinthetypesorasignificant.increaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthe'facility.Justi-ficationforclassificationoftheamendmentpursuantto10CFRSection170.22isincludedas.AttachmentC.AcheckfortheappropriatefeeaccompaniesthisApplication. | ||
CYIld teWHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoProvisionalOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentA.RochesterGasandElectricCorporationByL.D.Wxt,Jr.VicePresident,,ElectricandSteamProductionSubscribedandsworntobeforemeonthis7~dayofJune,1979.GARYI:sREISSIIOTARYPUBLIC,StateofII.Y.MonroeCo,/MCommissionExpiresMarch30,19.g/Ir | |||
~~1AttachmentAReplaceTechnicalSpecificationpage3.5-5withtherevisedpage3.5-5. | |||
TABIE3.5-2EMERGENCYCOOIINGNO.FUNCTIONALUNITNO.ofMIN.MIN.PERMISSIBIENO.ofCHANNELSOPERABLEDEGREEOF.BYPASSCHANNEISTOTRIP"'"'"'""CHANNEISREDUNDANCYCONDITIONS6OPERATORACTIONIFCONDITIONSOFCOLR1N3OR5CANNOTBEMET1.SAFETYINJECTIONa.Manualb.HighContainmentPressurec.SteamGeneratorLowSteamPressure/Loopd.PressurizerIowPressure2.CONTAINMENTSPRAYa.Manualb.Hi-HiContainmentPressure(ContainmentSpray)2setsof32of3inea.set2per1/setsetPrimarypressurelessHotShutdown"='"than2000psigHotShutdown:'HotShutdown:-'='otShutdown-'='-HotShutdown='='otShutdown-''"J~t~t+Mustactuate2switchessimultaneously.Ifminimumconditionsarenotmetwithn24hours,stepsshallbetakenontheaffectedunittoplacetheunitincoldshutdownconditions.4Ifafunctionalunitisoperatingwiththeminimumoperablechannelsthenumberofchannelstotripthereactorwillbecolumn3lesscolumn4. | |||
AttachmentBThedesignmodificationwillremovetherequirementforpressurizerlowlevelcoincidentwithpressurizer(primarysystem)lowpressurehforautomaticSafetyInjection(SI)initiation.Theexistinglogicprovidesthreechannelswithseriespressureandlevelcontacts(logicalAND)asshowninFigurel.AnyoneofthesethreechannelswillinitiateS.I.oncoincidentlowlevelandlowpressureinthepressurizer.Becausesteamvoidscanformduringadepressurizationevent,sufficientprimarycoolantmaybedisplacedinthereactorvesseltopreventpressurizerlevelfromfallingbelowthelowlevelsetpoint,thusblockingautomaticinitiationofSafetyInjection.InaccordancewithNRCBulletin79-06A,thisdesignmodificationdeletesthepressurizerlowlevelcoincidencefromlowpressurizerpressureSafetyInjection.Themodifieddesignwillinitiatesafetyinjectionwhenanytwoout.ofthreepressurizerlowpressuresignalsarereceivedasshowninFigure2.Thedesignmodificationshallconformwithallapplicablerequire-mentsofIEEEStd.279-1971.InparticularSection4.7.3statesthat,"whereasinglerandomfailurecancauseacontrolsystemactionthat,resultsinaconditionrequiringprotectiveactionandcanalsopreventproperactionofaprotectionsystemchanneldesignedtoprotectagainstthecondition,theremainingredundant,protectionchannelsshallbecapableofprovidingtheprotectiveactionevenwhendegradedbyasecondrandomfailure."The protectivechannelsusedinthisdesignarealsoutilizedto;openthepressurizerpower-operatedreliefvalvesonhighprimarypressure.Inordertoassurethatnosinglechannelfailure(failhigh)cancausespuriousopen'ingofthePORV,acoincident1(logicalAND)highpressuresignalfromanindependentchannelshallberequiredforPORVactuation.Thepermissivehighpressuresetpoint,.shallbesetabovetheoperatingrangesothat,thesystemdoesnotnormallyoperatewithapermissivesignalpresent.ThecontrollogicisshowninFigures3(a)and3(b)forexistingandproposedsetpoints.Pressurizersprayisactuatedbyeitherchannel429or431.Analyseshavebeenperformedtodetermineifafailure(failhigh)ofoneofthesechannels,causingspuriousoperationofthepressurizerspray,canresultinaplantconditionrequiringSafetyInjection.Thisanalysisshowsthat'hesafetyinjectionsetpointisreachedinapproximatelythreeminutes.EitherapressurechannelindependentoftheSIsystemshallbeusedforsprayactuation,ortheinputtotheSIsystem,nowfromachannelalsoactuatingpressurizerspray(431),shallbeinsteadsuppliedbyachannelindependentofthepressurizerspraysystem(449).Whenanychannelgoesintoalarm,itshallbeannunciatedintheMainControlRoominamannerconsistentwiththeexistingSafe-guardsSystems.TheSafetyInjectionactuationshallbeannunciated,intheMainControlRoomandtransmittedtotheplantcomputerinamannerconsistentwiththeexistingSafeguardsSystems. | |||
.rl Test,switchesshallbeprovidedtoprovidecapabilityfortestingduringpoweroperationinaccordancewithSection4.10ofIEEE279-1971andIEEE338-,1977.ThepurposeofthisTechnicalSpecificationChangeistoreviseTable3.5-2toreflectthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSI.ThedeletionofthelowlevelcoincidencefromthelowpressurizerpressureSIhasnegligibleeffectonthePlantTransientAnalysisortheECCSAnalysisforR.E.Ginna.TheanalysiswasdonewithSIinitiatedoncoincidenceoflowpressurizerpressure.andlevelsignals.TheeffectofchangingtoapressureonlysignalwillresultineitheranearlierinitiationofSI,ornochangeinthetimeofSIinitiation.Therefore,currentPlantTransientandsmallbreakanalysisassumptionsconcerningSIinitiationtimeareappropriate. | |||
04 | |||
~'0eROCHESTERGASANDELECTRICCORPORA~PlLlP2L2P3L3SXFigure1P2P3SXFigure2 | |||
~$ | |||
ROCHESTERGASANDELECTRICCORPORATPressurizerReliefValveOperation4294314304492185Ps3.g2335Ps3.g2335Ps3.g2185Ps3.gPCV430(Press.Relief:Valve)PCV431(Press.ReliefValve)Figure3(a)'ExistingSetpoints429431430449.P)3.g2335Ps3.g2335Ps3.g?335Ps3.gPCV430(Press.ReliefValves)PCV431(Press.ReliefValve)Figure3(b)ModifiedSetpoints AttachmentBAsaresultoftheThreeNileNileIslandaccidenttheNRCissuedIEBulletinNo.79-06Awhichrequiredchangestothelowpressurizer;.pressureSafetyInjection(SI)logic.PriortotheBulletinonemethodofgeneratingaSIsignalwasalowpressurizerpressureincoincidencewithlowpressurizerlevel.TheBulletinpostulatedthatpressurizerlevelmaynotrepresentthelevelinthereactorcoolantsystemundercertaintransientconditions.Therefore,pressurizerlowlevelcoincidenceshouldbedeletedfromlowpressurizerpressureSI.ThepurposeofthisTechnicalSpecificationChangeistoreviseTable3.5-2toreflectthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSI.ThedeletionofthelowlevelcoincidencefromthelowpressurizerpressureSIhasnegligibleeffect.onthePlantTransientAnalysisortheECCSAnalysisforR.E.Ginna.TheanalysiswasdonewithSIinitiatedoncoincidenceoflowpressurizerpressureandlevelsignals.TheeffectofchangingtoapressureonlysignalwillresultineitheranearlierinitiationofSI,ornochangeinthetimeofSIinitiation.Therefore,currentPlantTransientandsmallbreakanalysisassumptionsconcerningSIinitiationtimeareappropriate. | |||
p-,s~AttachmentCTheproposedAmendment,totheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClass1IIIof10CFRSection170.22therebyrequiringafeeof$4,000.TheproposedamendmentsimplyrevisesTable3.5-2forthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSafetyInjectionasrequiredbyIEBulletinNo.79-06A. | |||
~'t4I'f)J | |||
}} |
Revision as of 15:32, 5 May 2018
ML17244A555 | |
Person / Time | |
---|---|
Site: | Ginna |
Issue date: | 06/07/1979 |
From: | WHITE L D ROCHESTER GAS & ELECTRIC CORP. |
To: | |
Shared Package | |
ML17244A554 | List: |
References | |
NUDOCS 7906130198 | |
Download: ML17244A555 (17) | |
Text
UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterof.RochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant,UnitNo.1)DocketNo.50-244APPLICATIONFORAMENDMENTTOOPERATINGLICENSEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGas1andElectricCorporation("RG&E"),holderofProvisionalOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecifica-tionTable3.5-2setforthinAppendixAtothatlicensebeamendedinaccordancewithNRCBulletin79-06A,todeletethepressurizerlowlevelcoincidencefromlowpressurizerpressureSafetyInjectionsignal.Theproposedtechnical'pecificationchangeissetforthinAttachmentAtothisApplication.AsafetyevaluationissetforthinAttachmentB.Thisevaluationalsodemonstratesthattheproposedchangedoesnotinvolveasignificant,changeinthetypesorasignificant.increaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthe'facility.Justi-ficationforclassificationoftheamendmentpursuantto10CFRSection170.22isincludedas.AttachmentC.AcheckfortheappropriatefeeaccompaniesthisApplication.
CYIld teWHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoProvisionalOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentA.RochesterGasandElectricCorporationByL.D.Wxt,Jr.VicePresident,,ElectricandSteamProductionSubscribedandsworntobeforemeonthis7~dayofJune,1979.GARYI:sREISSIIOTARYPUBLIC,StateofII.Y.MonroeCo,/MCommissionExpiresMarch30,19.g/Ir
~~1AttachmentAReplaceTechnicalSpecificationpage3.5-5withtherevisedpage3.5-5.
TABIE3.5-2EMERGENCYCOOIINGNO.FUNCTIONALUNITNO.ofMIN.MIN.PERMISSIBIENO.ofCHANNELSOPERABLEDEGREEOF.BYPASSCHANNEISTOTRIP"'"'"'""CHANNEISREDUNDANCYCONDITIONS6OPERATORACTIONIFCONDITIONSOFCOLR1N3OR5CANNOTBEMET1.SAFETYINJECTIONa.Manualb.HighContainmentPressurec.SteamGeneratorLowSteamPressure/Loopd.PressurizerIowPressure2.CONTAINMENTSPRAYa.Manualb.Hi-HiContainmentPressure(ContainmentSpray)2setsof32of3inea.set2per1/setsetPrimarypressurelessHotShutdown"='"than2000psigHotShutdown:'HotShutdown:-'='otShutdown-'='-HotShutdown='='otShutdown-"J~t~t+Mustactuate2switchessimultaneously.Ifminimumconditionsarenotmetwithn24hours,stepsshallbetakenontheaffectedunittoplacetheunitincoldshutdownconditions.4Ifafunctionalunitisoperatingwiththeminimumoperablechannelsthenumberofchannelstotripthereactorwillbecolumn3lesscolumn4.
AttachmentBThedesignmodificationwillremovetherequirementforpressurizerlowlevelcoincidentwithpressurizer(primarysystem)lowpressurehforautomaticSafetyInjection(SI)initiation.Theexistinglogicprovidesthreechannelswithseriespressureandlevelcontacts(logicalAND)asshowninFigurel.AnyoneofthesethreechannelswillinitiateS.I.oncoincidentlowlevelandlowpressureinthepressurizer.Becausesteamvoidscanformduringadepressurizationevent,sufficientprimarycoolantmaybedisplacedinthereactorvesseltopreventpressurizerlevelfromfallingbelowthelowlevelsetpoint,thusblockingautomaticinitiationofSafetyInjection.InaccordancewithNRCBulletin79-06A,thisdesignmodificationdeletesthepressurizerlowlevelcoincidencefromlowpressurizerpressureSafetyInjection.Themodifieddesignwillinitiatesafetyinjectionwhenanytwoout.ofthreepressurizerlowpressuresignalsarereceivedasshowninFigure2.Thedesignmodificationshallconformwithallapplicablerequire-mentsofIEEEStd.279-1971.InparticularSection4.7.3statesthat,"whereasinglerandomfailurecancauseacontrolsystemactionthat,resultsinaconditionrequiringprotectiveactionandcanalsopreventproperactionofaprotectionsystemchanneldesignedtoprotectagainstthecondition,theremainingredundant,protectionchannelsshallbecapableofprovidingtheprotectiveactionevenwhendegradedbyasecondrandomfailure."The protectivechannelsusedinthisdesignarealsoutilizedto;openthepressurizerpower-operatedreliefvalvesonhighprimarypressure.Inordertoassurethatnosinglechannelfailure(failhigh)cancausespuriousopen'ingofthePORV,acoincident1(logicalAND)highpressuresignalfromanindependentchannelshallberequiredforPORVactuation.Thepermissivehighpressuresetpoint,.shallbesetabovetheoperatingrangesothat,thesystemdoesnotnormallyoperatewithapermissivesignalpresent.ThecontrollogicisshowninFigures3(a)and3(b)forexistingandproposedsetpoints.Pressurizersprayisactuatedbyeitherchannel429or431.Analyseshavebeenperformedtodetermineifafailure(failhigh)ofoneofthesechannels,causingspuriousoperationofthepressurizerspray,canresultinaplantconditionrequiringSafetyInjection.Thisanalysisshowsthat'hesafetyinjectionsetpointisreachedinapproximatelythreeminutes.EitherapressurechannelindependentoftheSIsystemshallbeusedforsprayactuation,ortheinputtotheSIsystem,nowfromachannelalsoactuatingpressurizerspray(431),shallbeinsteadsuppliedbyachannelindependentofthepressurizerspraysystem(449).Whenanychannelgoesintoalarm,itshallbeannunciatedintheMainControlRoominamannerconsistentwiththeexistingSafe-guardsSystems.TheSafetyInjectionactuationshallbeannunciated,intheMainControlRoomandtransmittedtotheplantcomputerinamannerconsistentwiththeexistingSafeguardsSystems.
.rl Test,switchesshallbeprovidedtoprovidecapabilityfortestingduringpoweroperationinaccordancewithSection4.10ofIEEE279-1971andIEEE338-,1977.ThepurposeofthisTechnicalSpecificationChangeistoreviseTable3.5-2toreflectthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSI.ThedeletionofthelowlevelcoincidencefromthelowpressurizerpressureSIhasnegligibleeffectonthePlantTransientAnalysisortheECCSAnalysisforR.E.Ginna.TheanalysiswasdonewithSIinitiatedoncoincidenceoflowpressurizerpressure.andlevelsignals.TheeffectofchangingtoapressureonlysignalwillresultineitheranearlierinitiationofSI,ornochangeinthetimeofSIinitiation.Therefore,currentPlantTransientandsmallbreakanalysisassumptionsconcerningSIinitiationtimeareappropriate.
04
~'0eROCHESTERGASANDELECTRICCORPORA~PlLlP2L2P3L3SXFigure1P2P3SXFigure2
~$
ROCHESTERGASANDELECTRICCORPORATPressurizerReliefValveOperation4294314304492185Ps3.g2335Ps3.g2335Ps3.g2185Ps3.gPCV430(Press.Relief:Valve)PCV431(Press.ReliefValve)Figure3(a)'ExistingSetpoints429431430449.P)3.g2335Ps3.g2335Ps3.g?335Ps3.gPCV430(Press.ReliefValves)PCV431(Press.ReliefValve)Figure3(b)ModifiedSetpoints AttachmentBAsaresultoftheThreeNileNileIslandaccidenttheNRCissuedIEBulletinNo.79-06Awhichrequiredchangestothelowpressurizer;.pressureSafetyInjection(SI)logic.PriortotheBulletinonemethodofgeneratingaSIsignalwasalowpressurizerpressureincoincidencewithlowpressurizerlevel.TheBulletinpostulatedthatpressurizerlevelmaynotrepresentthelevelinthereactorcoolantsystemundercertaintransientconditions.Therefore,pressurizerlowlevelcoincidenceshouldbedeletedfromlowpressurizerpressureSI.ThepurposeofthisTechnicalSpecificationChangeistoreviseTable3.5-2toreflectthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSI.ThedeletionofthelowlevelcoincidencefromthelowpressurizerpressureSIhasnegligibleeffect.onthePlantTransientAnalysisortheECCSAnalysisforR.E.Ginna.TheanalysiswasdonewithSIinitiatedoncoincidenceoflowpressurizerpressureandlevelsignals.TheeffectofchangingtoapressureonlysignalwillresultineitheranearlierinitiationofSI,ornochangeinthetimeofSIinitiation.Therefore,currentPlantTransientandsmallbreakanalysisassumptionsconcerningSIinitiationtimeareappropriate.
p-,s~AttachmentCTheproposedAmendment,totheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClass1IIIof10CFRSection170.22therebyrequiringafeeof$4,000.TheproposedamendmentsimplyrevisesTable3.5-2forthedeletionoflowpressurizerlevelcoincidencefromlowpressurizerpressureSafetyInjectionasrequiredbyIEBulletinNo.79-06A.
~'t4I'f)J