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(1)L.D.White,Jr.lettertoA.Schwencer,NRC,datedJuly29,19773.15-1Proposed AttachmentBAreactorcoolantsystemOverpressureProtectionSystem(OPS)hasbeeninstalledatR.E.GinnatomitigatepressuretransientsthatmightotherwiseexceedthoselimitswhicharebaseduponAppendixGto10CFRPart50.Thesystemisdesignedtomitigatetransientswhichmayresultfrompersonnelerror,equipmentmal-functionorproceduraldeficiencies.AdescriptionofthissystemwasprovidedinlettersfromMr.L.D.White,Jr.,RochesterGasandElectricCorporation,toMr.A.Schwencer,U.S.NuclearRegulatoryCommission,datedFebruary24,1977,March31,1977,andJuly29,1977.TheOPSwillpreventawatersolidreactorcoolantsystemfromexceedingapressureof535psigforasafetyinjectionpumpdischargingtothereactorcoolantsystem,areactorcoolantpumpstartdischargingtothereactorcoolantsystem,areactorcoolantpumpstartwitha50'Ftemperaturedifferentialbetweentheprimaryandsecondarysystemsorlessseveremassinputorheatinputtransients.Specification3.15requiresthatanoverpressureprotectionsystembeoperablewhenoneormoreoftheRCScoldlegtemperaturesislessthanorequalto330'F.Fortemperaturesgreaterthan330'FtheallowableRCSpressureisgreaterthanthenormalreliefpressureofthetwopressurizerpoweroperatedreliefvalvessothatnootheroverpressureprotectionisrequired.Below330'FeachofthePORVs,usingalowpressuresetpointof435psig,willmitigatethelimitingmassinputandheatinputpressuretransientsinawater-solidRCS.ThesinglesetpointwasestablishedtopreventexceedingtheallowableRCSpressureat100'Fanddoesnotprovideforpressureincreaseswhichwouldnormallybeacceptablewithincreasingtemperature.GinnaStationhasadministrativelylimitedthepressuredif-ferentialfromthesecondarysidetotheprimarysideofthesteamgeneratorsto800psid.Thislimithasbeenimposedtolimitstressesplacedonthesteamgeneratorwhichmaycausecladdingintheprimarychannelheadtoseparatefromthebasemetal.AlthoughGinnahasneverexperiencedcladdingseparation,severalotherplantsofthesamevintagedidintheirearlyoperatinghistory.The800psidpressurelimitationisconsideredawiseandprudentprecautiontolimitthepotentialfordifficultrepairsinahighradiationarea.Duringsecondarysidehydrostatictestingtherequirementsforhighsecondarysidepressure,limitedRCSpressureduetoOPSopera-tionandamaximum800psidifferentialpressurearemutuallyexclusive.TheOPSisneededonlyintheunlikelyeventofapressuretransient.DuringinfrequentsecondarysidehydrostatictestsextraprecautionscanbeimplementedtopreventpressuretransientswiththeOPSdeactivatedandtoallowcompliancewiththeotherconstraintsplaceduponthesteamgenerators. | (1)L.D.White,Jr.lettertoA.Schwencer,NRC,datedJuly29,19773.15-1Proposed AttachmentBAreactorcoolantsystemOverpressureProtectionSystem(OPS)hasbeeninstalledatR.E.GinnatomitigatepressuretransientsthatmightotherwiseexceedthoselimitswhicharebaseduponAppendixGto10CFRPart50.Thesystemisdesignedtomitigatetransientswhichmayresultfrompersonnelerror,equipmentmal-functionorproceduraldeficiencies.AdescriptionofthissystemwasprovidedinlettersfromMr.L.D.White,Jr.,RochesterGasandElectricCorporation,toMr.A.Schwencer,U.S.NuclearRegulatoryCommission,datedFebruary24,1977,March31,1977,andJuly29,1977.TheOPSwillpreventawatersolidreactorcoolantsystemfromexceedingapressureof535psigforasafetyinjectionpumpdischargingtothereactorcoolantsystem,areactorcoolantpumpstartdischargingtothereactorcoolantsystem,areactorcoolantpumpstartwitha50'Ftemperaturedifferentialbetweentheprimaryandsecondarysystemsorlessseveremassinputorheatinputtransients.Specification3.15requiresthatanoverpressureprotectionsystembeoperablewhenoneormoreoftheRCScoldlegtemperaturesislessthanorequalto330'F.Fortemperaturesgreaterthan330'FtheallowableRCSpressureisgreaterthanthenormalreliefpressureofthetwopressurizerpoweroperatedreliefvalvessothatnootheroverpressureprotectionisrequired.Below330'FeachofthePORVs,usingalowpressuresetpointof435psig,willmitigatethelimitingmassinputandheatinputpressuretransientsinawater-solidRCS.ThesinglesetpointwasestablishedtopreventexceedingtheallowableRCSpressureat100'Fanddoesnotprovideforpressureincreaseswhichwouldnormallybeacceptablewithincreasingtemperature.GinnaStationhasadministrativelylimitedthepressuredif-ferentialfromthesecondarysidetotheprimarysideofthesteamgeneratorsto800psid.Thislimithasbeenimposedtolimitstressesplacedonthesteamgeneratorwhichmaycausecladdingintheprimarychannelheadtoseparatefromthebasemetal.AlthoughGinnahasneverexperiencedcladdingseparation,severalotherplantsofthesamevintagedidintheirearlyoperatinghistory.The800psidpressurelimitationisconsideredawiseandprudentprecautiontolimitthepotentialfordifficultrepairsinahighradiationarea.Duringsecondarysidehydrostatictestingtherequirementsforhighsecondarysidepressure,limitedRCSpressureduetoOPSopera-tionandamaximum800psidifferentialpressurearemutuallyexclusive.TheOPSisneededonlyintheunlikelyeventofapressuretransient.DuringinfrequentsecondarysidehydrostatictestsextraprecautionscanbeimplementedtopreventpressuretransientswiththeOPSdeactivatedandtoallowcompliancewiththeotherconstraintsplaceduponthesteamgenerators. | ||
DuringnormaloperationwhentheOPSisrequiredtobeoperable,amaximumofonesafetyinjectionpumpisallowedtobeoperabletoassurethatamassadditionpressuretransientcanberelievedbyasinglePORV.Duringthesecondarysidehydrostatictestnosafetyinjectionpumpswillbeallowedtooperate.TheOPSwillmitigatetheeffectsofareactorcoolantpumpstartwiththesecondarysideofthesteamgeneratorsatleast50'Fwarmerthanthereactorcoolantsystem.Priortothesecondarysidehydrostatictestthetemperaturedifferentialwillbeminimizedbothtoaidintheperformanceofthetestandtopreventapressuretransientintheeventofaninadvertentreactorcoolantpumpstart.TheexistinglimitationsontheoperationofthechargingpumpswhentheRCSisbeingcooledbytheRHRsystemwithouttheOPSoperablewillbefollowed.Theselimitationswillpreventin-advertentoverpressurizationoftheRHRsystemshouldletdownbeterminated.TheOPShasnotbeenchallengedatGinnaStation.EtwillbeoperablebeforeandafterthesecondarysidehydrostatictestasrequiredbytheRCStemperature.DuringthehydrostatictestwhentheOPSisnotoperablethenormaloperationsshiftwillbesupplementedbyanadditionallicensedoperator.Thisoperatorwillbechargedwiththeresponsibilityofassuringthatalltheadministrativecontrolsandprecautionsnecessarytopreventoverpressuretransientswillbeobserved.Thus,thereisadequateassurancethatapressuretransientwillnotoccurduringasecondarysidehydrostatictestandthatthetestcanbesafelyperformedwithouttheOPSoperable. | DuringnormaloperationwhentheOPSisrequiredtobeoperable,amaximumofonesafetyinjectionpumpisallowedtobeoperabletoassurethatamassadditionpressuretransientcanberelievedbyasinglePORV.Duringthesecondarysidehydrostatictestnosafetyinjectionpumpswillbeallowedtooperate.TheOPSwillmitigatetheeffectsofareactorcoolantpumpstartwiththesecondarysideofthesteamgeneratorsatleast50'Fwarmerthanthereactorcoolantsystem.Priortothesecondarysidehydrostatictestthetemperaturedifferentialwillbeminimizedbothtoaidintheperformanceofthetestandtopreventapressuretransientintheeventofaninadvertentreactorcoolantpumpstart.TheexistinglimitationsontheoperationofthechargingpumpswhentheRCSisbeingcooledbytheRHRsystemwithouttheOPSoperablewillbefollowed.Theselimitationswillpreventin-advertentoverpressurizationoftheRHRsystemshouldletdownbeterminated.TheOPShasnotbeenchallengedatGinnaStation.EtwillbeoperablebeforeandafterthesecondarysidehydrostatictestasrequiredbytheRCStemperature.DuringthehydrostatictestwhentheOPSisnotoperablethenormaloperationsshiftwillbesupplementedbyanadditionallicensedoperator.Thisoperatorwillbechargedwiththeresponsibilityofassuringthatalltheadministrativecontrolsandprecautionsnecessarytopreventoverpressuretransientswillbeobserved.Thus,thereisadequateassurancethatapressuretransientwillnotoccurduringasecondarysidehydrostatictestandthatthetestcanbesafelyperformedwithouttheOPSoperable. | ||
AttachmentCTheproposedAmendmenttotheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClassIIIof10C.F.R.Section170.22therebyrequiringafeeof$4,000.Theproposedamendmentdealswithasinglesafetyissue,over-pressureprotectionofthereactorvessel.TheissuehasbeenclearlyidentifiedbyanNRCposition. | AttachmentCTheproposedAmendmenttotheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClassIIIof10C.F.R.Section170.22therebyrequiringafeeof$4,000.Theproposedamendmentdealswithasinglesafetyissue,over-pressureprotectionofthereactorvessel.TheissuehasbeenclearlyidentifiedbyanNRCposition.}} | ||
}} |
Revision as of 15:38, 18 May 2018
ML17244A690 | |
Person / Time | |
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Site: | Ginna |
Issue date: | 07/17/1979 |
From: | WHITE L D ROCHESTER GAS & ELECTRIC CORP. |
To: | |
Shared Package | |
ML17244A689 | List: |
References | |
NUDOCS 7907230233 | |
Download: ML17244A690 (8) | |
Text
UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterofRochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant,UnitNo.l))))DocketNo.50-244))APPLICATIONFORAMENDMENTTOOPERATINGLICENSEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGasandElectricCorporation("RG&E"),holderofProvisionalOperatingLicenseNo.DPR-l8,herebyrequeststhattheTechnicalSpecifica-tionssetforthinAppendixAtothatlicensebeamendedtochangereactoroverpressureprotectionsystemrequirements.TheproposedtechnicalspecificationchangeissetforthinAttachmentAtothisApplication.AsafetyevaluationissetforthinAttachmentB.Thisevaluationalsodemonstratesthat,theproposedchangedoesnotinvolveasignificantchangeinthetypesorasignificantincreaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthefacility.Justifi-cationforclassificationoftheamendmentpursuantto10C.F.R.Section170.22isincludedasAttachmentC.AcheckfortheappropriatefeeaccompaniesthisApplication.
WHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoProvisionalOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentA.RochesterGasandElectricCorporationByL.D.Who.,Jr.VicePresident,ElectricandSteamProductionSubscribedandsworntobeforeme'nthisI7dayofJuly,1979.STEPHENKOWBANOTARYPUBLlC,StateofN.Y,MonroeCountyftyCommissionExpiresMarch30,19/17 BEFORETHEUNITEDSTATESNUCLEARREGULATORYCOMMISSIONIntheMatterofROCHESTERGASANDELECTRXCCORPORATION(R.E.GinnaNuclearPowerStation,Unit,No.1))))))DocketNo.50-244)CERTIPXCATEOFSERVICEIherebycertifythatIhaveservedadocumententitled"Applicationfor'AmendmenttoOperatingLicense"withthree(3)documents,AttachmentsA,BandC,attachedthereto,bymailingcopiesthereoffirstclass,postagepre-paid,toeachofthefollowingpersonsthis19thdayofJuly1979:Mr.MichaelL.Slade1250CrownPointDriveWebster,NewYork14580WarrenB.Rosenbaum,EsquireOneMainStreet707WilderBuildingRochester,NewYork14614EdwardG.Ketchen,EsquireOfficeoftheExecutiveLegalDirectorU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.RobertN.PickneySupervisorTownofOntario197RidgeRoadWestOntario,NewYork14519 JeffreyL.Cohen,EsquireNewYorkStateEnergyOfficeSwanStreetBuildingCorel,SecondFloorEmpireStatePlazaAlbany,NewYorkl2223EdwardLuton,EsquireAtomicSafetyandLicensingBoardU.S.NuclearRegulatoryCommissionDr.EmmethA.LuebkeAtomicSafetyandLicensingBoardU.S.NuclearRegulatoryCommissionDr.DixonCallihanUnionCarbideCorporationP.O.BoxYOakRidge,Tennessee37830oertS.FaronLeBoeuf,Lamb,Leiby6MacRaeAttorneysforRochesterGasandElectricCorporation ATTACHMENTAOveressureProtectionSstem~ld>>ApplieswheneverthetemperatureofoneormoreoftheRCScoldlegsis<330'F.Ob'ectiveToprevent,overpressurizationofthereactorcoolantsystem.Secification/3.15.1Exceptduringsecondarysidehydrostatictests,atleastoneofthefollowingoverpressureprotectionsystemsshallbeoperable:a~b.Twopressurizerpoweroperatedreliefvalves(PORVs)'ithaliftsettingof<435psig,orAreactorcoolantsystemventof>1.1squareinches.3.15.1.13.15.1.23.15.1.3WithonePORVinoperable',eitherrestoretheinoperablePORVtooperablestatuswithin7daysordepressurizeandventtheRCSthrougha1.1squareinchvent(s)withinthenext8hours;maintaintheRCSinaventedconditionuntilbothPORVshavebeenrestoredtooperablestatus.WithbothPORVsinoperable,depressurizeandventtheRCSthrougha1.1squareinchvent(s)within8hours;maintaintheRCSinaventedconditionuntilbothPORVshavebeenrestoredtooperablestatus.UseoftheoverpressureprotectionsystemtomitigateaRCSpressuretransientshallbereportedinaccordancewith6.9.3.BasisTheoperabilityoftwopressurizerPORVsoranRCSventopeningofgreaterthan1.1squareinchesensuresthattheRCSwillbeprotectedfrompressuretransientswhichcouldexceedthelimitsofAppendixGto10CFRPart50whenoneormoreoftheRCScoldlegsare<330'F.EitherPORVhasadequaterelievingcapabilitytoprotect;theRCSfromoverpressurizationwhenthetransientislimitedtoeither(1)thestartofanidleRCPwiththesecondarywatertemperatureofthesteamgenerator<50'FabovetheRCScoldlegtemperatureor(2)thestartofpsafetyinjectionpumpanditsinjectionintoawatersolidRCS.
References:
(1)L.D.White,Jr.lettertoA.Schwencer,NRC,datedJuly29,19773.15-1Proposed AttachmentBAreactorcoolantsystemOverpressureProtectionSystem(OPS)hasbeeninstalledatR.E.GinnatomitigatepressuretransientsthatmightotherwiseexceedthoselimitswhicharebaseduponAppendixGto10CFRPart50.Thesystemisdesignedtomitigatetransientswhichmayresultfrompersonnelerror,equipmentmal-functionorproceduraldeficiencies.AdescriptionofthissystemwasprovidedinlettersfromMr.L.D.White,Jr.,RochesterGasandElectricCorporation,toMr.A.Schwencer,U.S.NuclearRegulatoryCommission,datedFebruary24,1977,March31,1977,andJuly29,1977.TheOPSwillpreventawatersolidreactorcoolantsystemfromexceedingapressureof535psigforasafetyinjectionpumpdischargingtothereactorcoolantsystem,areactorcoolantpumpstartdischargingtothereactorcoolantsystem,areactorcoolantpumpstartwitha50'Ftemperaturedifferentialbetweentheprimaryandsecondarysystemsorlessseveremassinputorheatinputtransients.Specification3.15requiresthatanoverpressureprotectionsystembeoperablewhenoneormoreoftheRCScoldlegtemperaturesislessthanorequalto330'F.Fortemperaturesgreaterthan330'FtheallowableRCSpressureisgreaterthanthenormalreliefpressureofthetwopressurizerpoweroperatedreliefvalvessothatnootheroverpressureprotectionisrequired.Below330'FeachofthePORVs,usingalowpressuresetpointof435psig,willmitigatethelimitingmassinputandheatinputpressuretransientsinawater-solidRCS.ThesinglesetpointwasestablishedtopreventexceedingtheallowableRCSpressureat100'Fanddoesnotprovideforpressureincreaseswhichwouldnormallybeacceptablewithincreasingtemperature.GinnaStationhasadministrativelylimitedthepressuredif-ferentialfromthesecondarysidetotheprimarysideofthesteamgeneratorsto800psid.Thislimithasbeenimposedtolimitstressesplacedonthesteamgeneratorwhichmaycausecladdingintheprimarychannelheadtoseparatefromthebasemetal.AlthoughGinnahasneverexperiencedcladdingseparation,severalotherplantsofthesamevintagedidintheirearlyoperatinghistory.The800psidpressurelimitationisconsideredawiseandprudentprecautiontolimitthepotentialfordifficultrepairsinahighradiationarea.Duringsecondarysidehydrostatictestingtherequirementsforhighsecondarysidepressure,limitedRCSpressureduetoOPSopera-tionandamaximum800psidifferentialpressurearemutuallyexclusive.TheOPSisneededonlyintheunlikelyeventofapressuretransient.DuringinfrequentsecondarysidehydrostatictestsextraprecautionscanbeimplementedtopreventpressuretransientswiththeOPSdeactivatedandtoallowcompliancewiththeotherconstraintsplaceduponthesteamgenerators.
DuringnormaloperationwhentheOPSisrequiredtobeoperable,amaximumofonesafetyinjectionpumpisallowedtobeoperabletoassurethatamassadditionpressuretransientcanberelievedbyasinglePORV.Duringthesecondarysidehydrostatictestnosafetyinjectionpumpswillbeallowedtooperate.TheOPSwillmitigatetheeffectsofareactorcoolantpumpstartwiththesecondarysideofthesteamgeneratorsatleast50'Fwarmerthanthereactorcoolantsystem.Priortothesecondarysidehydrostatictestthetemperaturedifferentialwillbeminimizedbothtoaidintheperformanceofthetestandtopreventapressuretransientintheeventofaninadvertentreactorcoolantpumpstart.TheexistinglimitationsontheoperationofthechargingpumpswhentheRCSisbeingcooledbytheRHRsystemwithouttheOPSoperablewillbefollowed.Theselimitationswillpreventin-advertentoverpressurizationoftheRHRsystemshouldletdownbeterminated.TheOPShasnotbeenchallengedatGinnaStation.EtwillbeoperablebeforeandafterthesecondarysidehydrostatictestasrequiredbytheRCStemperature.DuringthehydrostatictestwhentheOPSisnotoperablethenormaloperationsshiftwillbesupplementedbyanadditionallicensedoperator.Thisoperatorwillbechargedwiththeresponsibilityofassuringthatalltheadministrativecontrolsandprecautionsnecessarytopreventoverpressuretransientswillbeobserved.Thus,thereisadequateassurancethatapressuretransientwillnotoccurduringasecondarysidehydrostatictestandthatthetestcanbesafelyperformedwithouttheOPSoperable.
AttachmentCTheproposedAmendmenttotheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClassIIIof10C.F.R.Section170.22therebyrequiringafeeof$4,000.Theproposedamendmentdealswithasinglesafetyissue,over-pressureprotectionofthereactorvessel.TheissuehasbeenclearlyidentifiedbyanNRCposition.