ML12020A091

Three Mile Island, Unit 1, Response to Request for Additional Information Related to the Proposed Administrative Changes to the Technical Specifications

ML12020A091
Person / Time
Site:	Three Mile Island
Issue date:	01/20/2012
From:	Jesse M D Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME7357, TMI-11-171
Download: ML12020A091 (19)

Text

10CFR50.90January20,2012U.S.NuclearRegulatoryCommissionATIN:DocumentControlDeskWashington,DC20555*0001ThreeMileIslandNuclearStation,Unit1RenewedFacilityOperatingLicenseNo.DPR*50NRCDocketNo.50*289Subject:ThreeMileIslandUnit1ResponsetoRequestforAdditionalInformationRelatedtotheProposedAdministrativeChangestotheTechnicalSpecificationsReferences:(1)LetterfromM.D.Jesse(ExelonGenerationCompany,LLC)toU.S.NuclearRegulatoryCommission,"LicenseAmendmentRequesttoreviseTechnicalSpecificationstoincorporateadministrativechanges"datedOctober18,2011(ML112911548)(2)LetterfromP.Bamford(U.S.NuclearRegulatoryCommission)toM.J.Pacilio(ExelonGenerationCompany,LLC),"ThreeMileIslandNuclearStation,Unit1.RequestforAdditionalInformationRegardingProposedLicenseAmendmentRevisingTechnicalSpecificationstoIncorporateAdministrativeChanges"(TACNO.ME7357)"datedDecember19,2011(ML113360596)ByletterdatedOctober18,2011(Reference1),ExelonGenerationCompany,LLC(Exelon),requestedanamendmenttotheTechnicalSpecifications(TS)forThreeMileIslandNuclearStation,Unit1(TMI,Unit1)toincorporateseveraladministrativechangesincludingcorrectingtypographicalerrors,removingunwarrantedformatting,andclarifyingsymbols/pagesthatmaynotcopy/printwell.TheU.S.NuclearRegulatoryCommission(USNRC)staffhasbeenreviewingtheReference1submittalandhasdeterminedthatadditionalinformationisneededtocompletethereview.TheUSNRCstaffformallyrequestedadditionalinformationonDecember19,2011(Reference2).Exelon'sresponsetotheUSNRCquestionsisprovidedinAttachment1tothisletter.Attachment2providestheexistingTSpagemark*upsandAttachment3providestherevisedpagesshowingtheproposedchanges.ExelonhasdeterminedthattheinformationprovidedinresponsetothisrequestforadditionalinformationdoesnotimpacttheconclusionsoftheNoSignificantHazardsConsiderationorEnvironmentalConsiderationasstatedinReference1.Therearenoregulatorycommitmentscontainedinthissubmittal.Inaccordancewith10CFR50.91,"Noticeforpubliccomment;Stateconsultation,"paragraph(b),ExelonisnotifyingtheCommonwealthofPennsylvaniaofthisresponsebytransmittingacopyofthisletteranditsattachmenttothedesignatedStateOfficial.

U.S.NuclearRegulatoryCommissionJanuary20,2012Page2Shouldyouhaveanyquestionsconcerningthisletter,pleasecontactMs.WendyE.Croftat(610)765-5726.Ideclareunderpenaltyofperjurythattheforegoingistrueandcorrect.Executedonthe20thdayofJanuary,2012.MichaelD.Director,LicenS'gandRegulatoryAffairsExelonGenerationCompany,LLCAttachments:1.ResponsetoRequestforAdditionalInformationRelatedtoProposedAdministrativeChangestotheTechnicalSpecifications2.ProposedTechnicalSpecificationPages(Mark-Up)3.RevisedTechnicalSpecificationPagescc:USNRCRegionI,RegionalAdministratorUSNRCProjectManager,TMI,Unit1USNRCSeniorResidentInspector,TMI,Unit1Director,BureauofRadiationProtection,PADepartmentofEnvironmentalResourcesChairman,BoardofCountyCommissioners,DauphinCounty,PAChairman,BoardofSupervisors,LondonderryTownship,PAR.R.Janati,CommonwealthofPennsylvania ATTACHMENT1ResponsetoRequestforAdditionalInformationRelatedtoProposedAdministrativeChangestotheTechnicalSpecificationsThreeMileIslandNuclearStation,Unit1RenewedFacilityOperatingLicenseNo.DPR-50 ResponsetoRAIRelatedtoProposedAdministrativeChangestotheTSAttachment1January20,2012Page1of2NRCQuestion1Intheapplication,Attachment1,page3of6,thetenthbulletstates,"TS3.5.2.5.b.1and2onpage3-35areeditedtoremoveanerroneousperiod(.)."TheexistingTS3.5.2.5.b.1doesnotappeartocontainanerroneousperiod.Pleaseclarifyorcorrectthesubmittal.TMIUnit1ResponseThreeMileIsland,Unit1(TMI,Unit1)withdrawstherequesttoremovetheerroneousperiodfromTechnicalSpecification(TS)3.5.2.5.b.1.Attachment2containsacorrectedproposedmark-upofTSpage3-35showingthisrequestwithdrawn.Attachment3providesarevised"cleancopy"ofTSpage3-35.NRCQuestion2Thesubmittedmarkupand"cleancopy"pageversions(Attachments2and3,respectively)forTSpage4-5donotappeartoreflectthecurrentTSpage4-5.Specifically,theydonotappeartoreflectchangesauthorizedbyTMI-1TSAmendment273,datedMay27,2010(ADAMSAccessionNo.ML092740791),andlettersdatedMarch4,2011(ADAMSAccessionNo.ML110550707),andOctober27,2011(ADAMSAccessionNo.ML112980458).Inparticular,itemnumbers23and24onpage4-5appeartobeinerror.Asimilarproblemaffectspages1-3and3-35.Pleasesubmitcorrectedmarkupand"cleancopy"versionsofthesepages,asappropriate.TMIUnit1ResponseAttachment2containsacorrectedproposedmark-upofTSpages4-5,1-3,and3-35incorporatingTSAmendment273andlettersdatedMarch4,2011,andOctober27,2011(asapplicable).Attachment3providesrevised"cleancopies"ofTSpages4-5,1-3,and3-35.NRCQuestion3Accordingtotheapplication,Attachment1,page4of6,TSFigure5-1hasbeenupdatedforclarityandtorevisethetitleboxtoreflectExelon,thecurrentlicensee.TSFigure5-1isreferencedbyTS5.1.1(notethatTS5.1.1referstoFigure5.1)anddescribesitasan"extendedplotplan,"consistentwiththeListofFiguresonTSpagevii.TS5.1.1alsostatesthatFigure5.1(5-1)showstheTMIExclusionArea.TheextendedplotplantitleandtheexclusionareadepictionhavebeenremovedfromtherevisedFigure5-1,makingTS5.1.1confusingandincorrect.Inaddition,TS5.1.1statesthatFigure5.1(5-1)showstheimmediatesurroundings,howevertherevisedFigure5-1haseliminatedsomeofthesurroundingfeaturessuchasthedepictionoftheoffsitetransmissionlines.PleasecorrecttherevisedFigure5-1consistentwiththeexistingTS5.1.1,and/orjustifyanydesiredchangestoFigure5-1,theListofFigures,and/orTS5.1.1.TMIUnit1ResponseTMI,Unit1withdrawstherequesttoupdateTSFigure5-1forclarity.Attachment2containsacorrectedproposedmark-upofFigure5-1whichonlyrevisesthetitleboxtoreflectExelon,thecurrentlicensee.Attachment3providesarevised"cleancopy"ofFigure5-1.

ResponsetoRAIRelatedtoProposedAdministrativeChangestotheTSAttachment1January20,2012Page2of2NRCQuestion4TS5.1.1describesFigure5-2asdepictingthesitetopographyforaradiusof5milesfromthestation.TherevisedFigure5-2appearstohavedeletedthetopographicallines.Therefore,pleasesubmitarevisedFigure5-2thatincludestopographicalinformationorjustify,andsubmit,arevisedTS5.1.1.TMIUnit1ResponseTMI,Unit1withdrawstherequesttoupdateTSFigure5-2forclarity.Attachment2containsacorrectedproposedmark-upofFigure5-2whichonlyrevisesthetitleboxtoreflectExelon,thecurrentlicensee.Attachment3providesarevised"cleancopy"ofFigure5-2.NRCObservationsTheNRCstaffalsohasseveralobservationsregardingthesubmittalandtheexistingTSs.Asdescribedabove,theNRCstaffnotesthatTS5.1.1referstoFigure5-1asFigure5.1.Exelonshouldconsiderclarifyingthisdiscrepancy.Inaddition,theNRCstaffnotesthatTS5.1.1referstoa"weathertower"depictedonFigure5-3.BoththeexistingandrevisedFigure5-3depictionsshowa"weatherstation."Exelonshouldconsidermakingthisterminologyconsistent.Finally,theexistingTS5.1.1referstoAmerGenEnergyCompany,LLCinthedescriptionofFigure5.1(5-1).Exelonshouldevaluatewhetherthisisthecorrectterminology.TMIUnit1ResponseInaccordancewiththeNRCobservationsnotedabove,TMI,Unit1requeststhefollowingadditionalproposedchangestotheTMI,Unit1TS:*TS5.1.1onpage5-1wasrevisedtostate"Figure5-1"consistentwiththeListofFiguresonTSpageviiandFigure5-1.*TS5.1.1onpage5-1wasrevisedtostate"weatherstation"consistentwithFigure5-3.*TS5.1.1onpage5-1wasrevisedtoreferto"Exelon"inthedescriptionofFigure5-1,consistentwithresponsetoNRCQuestion3aboveandAmendment267.Attachment2containsacorrectedproposedmark-upofTSpage5-1.Attachment3providesarevised"cleancopy"ofTSpage5-1.

ATTACHMENT2ProposedTechnicalSpecificationsPages(Mark-Up)ThreeMileIslandGeneratingStation,Unit1RenewedFacilityOperatingLicenseNo.DPR-50REVISEDTECHNICALSPECIFICATIONSPAGES1-33-354-55-1Figure5-1(pageN/A)Figure5-2(pageN/A) 1.4.2REACTORPROTECTIONSYSTEMThereactorprotectionsystemis.oftheUpdatedFSAR.Itisthatcombinationofprotectionchannelsandassociatedcircuitrywhichformstheautomaticsystemthatprotectsthereactorbycontrolrodtrip.Itincludesthefourprotectionchannels,theirassociatedinstrumentchannelinputs,manualtripswitch,allroddrivecontrolprotectiontripbreakers,andactivatingrelaysorcoils.1.4.3PROTECTIONAPROTECTIONCHANNELasoftheupdatedFSAR(oneofthreeoroneoffourindependentchannels,completewithsensors,sensorpowersupplyunits,amplifiers,andbistablemodulesprovidedforeveryreactorprotectionsafetyparameter)isacombinationofinstrumentchannelsformingasingledigitaloutputtotheprotectionsystem'scoincidencelogic.Itincludesashutdownbypasscircuit,aprotectionchannelbypasscircuitandareactortripmodule.1.4.4REACTORPROTECTIONSYSTEMLOGIC**i*rOb.*;rry'I;;reSL(,Der,n*:;'cCuO"I.1Thissystemutilizesreactortrii:modulerelays(coilsandcontacts)inallfouroftheprotectionchannelsasdsseriesdinSsetien7AoftheupdatedFSAR,toprovidereactortripsignalsforde-energizingthefourcontrolroddrivetripbreakers.Thecontrolroddrivetripbreakersarearrangedtoprovideaone-out-of-two-times-twologic.Eachelementoftheone-out-of-two-times-twologiciscontrolledbyaseparatesetoftwo-out-of-fourlogiccontactsfromthefourreactorprotectionchannels.1.4.5ENGINEEREDSAFETYFEATURESSYSTEMThissystemutilizesrelaycontactoutputfromindividualchannelsarrangedinthreeanalogsub-systemsandtwotwo-out-of-threelogicsub-systemsasshowninFigure7.1-4oftheupdatedFSAR.Thelogicsub-systemiswiredtoprovideappropriatesignalsfortheactuationofredundantengineeredsafetyfeaturesequipmentonatwo-of-threebasisforanygivenparameter.1.4.6DEGREEOFREDUNDANCYThedifferencebetweenthenumberofoperablechannelsandthenumberofchannelswhich,whentripped,willcauseanautomaticsystemtrip.1.5INSTRUMENTATIONSURVEILLANCE1.5.1TRIPTESTATRIPTESTisatestoflogicelementsinaprotectionchanneltoverifytheirassociatedtripaction.1-3AmendmentNo.137,157, 3.5.2.53.5.2.63.5.2.7ControlRodPositionsa.Operatingrodgroupoverlapshallnotexceed25percent+/-5percent,betweentwosequentialgroupsexceptforphysicstests.b.Positionlimitsarespecifiedforregulatingcontrolrods.Exceptforphysicstestsorexercisingcontrolrods,theregulatingcontrolrodinsertion/withdrawallimitsarespecifiedintheCOREOPERATINGLIMITSREPORT.1.Ifregulatingrodsareinsertedintherestrictedoperatingregion,correctivemeasuresshallbetakenimmediatelytoachieveanacceptablecontrolrodposition.Acceptablecontrolrodpositionsshallbeattainedwithin24hours,andFQ(Z)andF:Hshallbeverifiedwithinlimitsonceevery2hours,orpowershallbereducedto:s;powerallowedbyinsertionlimits.2.IfregulatingrodsareAnsertedintheunacceptable0ratingregion,initiateborationwithin15minutestorestoreSDMto:2::1%,andrestoreregulatingrodstowithinrestrictedregionwithin2hoursorreducepowerto:s;powerallowedbyrodinsertionlimits.c.Safetyrodlimitsaregivenin3.1.3.5.DeletedAxialPowerImbalance:a.Exceptforphysicsteststheaxialpowerimbalance,asdeterminedusingthefullincoresystem(FIS),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.TheFISisoperableformonitoringaxialpowerimbalanceprovidedthenumberofvalidselfpoweredneutrondetector(SPND)signalsinanyonequadrantisnotlessthanthelimitintheCOREOPERATINGLIMITSREPORT.b.WhenthefullincoredetectorsystemisnotOPERABLEandexceptforphysicstestsaxialpowerimbalance,asdeterminedusingthepowerrangechannels(outofcoredetectorsystem)(OCD),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.c.WhenneitherdetectorsystemaboveisOPERABLEand,exceptforphysicstestsaxialpowerimbalance,asdeterminedusingtheminimumincoresystem(MIS),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.d.Exceptforphysicstestsifaxialpowerimbalanceexceedstheenvelope,correctivemeasures(reductionofimbalancebycontrolrodmovementsand/orreductioninreactorpower)shallbetakentomaintainoperationwithintheenvelope.VerifyFQ(Z)andF:HarewithinlimitsoftheCOLRonceper2hourswhennotwithinimbalancelimits.3-35AmendmentNo.10,17,29,38,39,50,120,126,142,150,179,211,219,2+3-TABLE4.1-1(Continued)CHANNELDESCRIPTIONCHECK(c)TEST(c)CALIBRATE(c)REMARKS>>19.ReactorBuildingEmergency3CoolingandIsolationCDSystemAnalogChannels::Ja.3CDa.ReactorBuilding(1)(1)(1)WhenCONTAINMENTINTEGRITYis::J-4psigChannelsrequired.zpb.RCSPressure1600psig(1)(1)NA(1)WhenRCSPressure>1800psig.c.Deletedd.ReactorBldg.30psi(1)(1)(1)WhenCONTAINMENTINTEGRITYispressureswitchesrequired.e.ReactorBldg.Purge(1)(1)WhenCONTAINMENTINTEGRITYisLineHighRadiationrequired.(AH-V-1A1D)f.LineBreakIsolation(1)(1)(1)WhenCONTAINMENTINTEGRITYisSignal(ICCW&NSCCW)required.20.ReactorBuildingSprayNANASystemLogicChannelJ>.I21.ReactorBuildingSprayNA**0130psigpressureswitches22.PressurizerTemperatureNA.Channels23.ControlRodAbsolutePosition(1)NA(1)CheckwithRelativePositionIndicationa.ZoneReferenceSwitchNAR(1)NA(1)Verifyswitchfunctions24.ControlRodRelativePosition(1)NANA(1)CheckwithAbsolutePositionIndication25.CoreFloodingTanksa.PressureChannelseoutantNANAb.LevelChannelsNANA26.PressurizerLevelChannelsNA 5.0DESIGNFEATURES5.1SITEApplicabilityAppliestothelocationandextentoftheexclusionboundary,restrictedarea,andlowpopulationzone.ObjectiveTodefinetheabovebylocationanddistancedescription.Specification5.1.1TheThreeMileIslandNuclearStationUnit1islocatedinanareaoflowpopulationdensityabouttenmilessoutheastofHarrisburg,PA.ItisinLondonderryTownshipofDauphinCounty,Pennsylvania,abouttwoandhalfmilesnorthofthesoutherntipofDauphinCounty,whereDauphiniscoterminalwithYorkandLancasterCounties.ThestationislocatedonanislandapproximatelythreemilesinIefromYorkHavenDam.Figureisanextendedplotplanofthesiteshowingtheplantorientationandimmediatesurroundings.TheExclusionAreaasdefinedin10CFR100.3,isa2,000ft.radius,includingportionsofThreeMileIsland,theriversurfacearounditaportIon0e*eysan,WICISownedby.Theminimumdistanceof2,000ft.occursontheshore0inlandinadueeasterl*directionfromthelantasshownonFigurefortheExclusionArea.Figure5-3showingthephysicallocationofthefencedefinesthe"RestrictedArea"surroundingtheplant.Theminimumdistanceofthe"RestrictedArea"isapproximately560feetandisfromthecenterlineoftheTMIUnit2ReactorBuildingtoapointonthewesterlyshorelineofThreeMileIsland.TheminimumdistancetotheouterboundaryofthelowpopulationzoneistwomilesasshownonT.S.Figure5-2,whichalsodepictsthesitetopographyforaradiusoffivemiles.1.S.Figure5-3depictsthelocationsofgaseouseffluentreleasepointsandliquideffluentoutfalls(astabularizedonpage5-10),andthemeteorologicaltowerlocation(designatedas'weatheronthefigure).5-1AmendmentNo.72,137,149,zt&

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.....>J...4:::..""'.i;o:a;2n.u0c::oQjxWluillIt ATTACHMENT3RevisedTechnicalSpecificationsPagesThreeMileIslandGeneratingStation,Unit1RenewedFacilityOperatingLicenseNo.DPR-50REVISEDTECHNICALSPECIFICATIONSPAGES1-33-354-55-1Figure5-1(pageN/A)Figure5-2(pageN/A) 1.4.2REACTORPROTECTIONSYSTEMThereactorprotectionsystemisdescribedinSection7.1oftheUpdatedFSAR.Itisthatcombinationofprotectionchannelsandassociatedcircuitrywhichformstheautomaticsystemthatprotectsthereactorbycontrolrodtrip.Itincludesthefourprotectionchannels,theirassociatedinstrumentchannelinputs,manualtripswitch,allroddrivecontrolprotectiontripbreakers,andactivatingrelaysorcoils.1.4.3PROTECTIONCHANNELAPROTECTIONCHANNELasdescribedinSection7.1oftheupdatedFSAR(oneofthreeoroneoffourindependentchannels,completewithsensors,sensorpowersupplyunits,amplifiers,andbistablemodulesprovidedforeveryreactorprotectionsafetyparameter)isacombinationofinstrumentchannelsformingasingledigitaloutputtotheprotectionsystem'scoincidencelogic.Itincludesashutdownbypasscircuit,aprotectionchannelbypasscircuitandareactortripmodule.1.4.4REACTORPROTECTIONSYSTEMLOGICThissystemutilizesreactortripmodulerelays(coilsandcontacts)inallfouroftheprotectionchannelsasdescribedinSection7.1oftheupdatedFSAR,toprovidereactortripsignalsforde-energizingthefourcontrolroddrivetripbreakers.Thecontrolroddrivetripbreakersarearrangedtoprovideaone-out-of-two-times-twologic.Eachelementoftheone-out-of-two-times-twologiciscontrolledbyaseparatesetoftwo-out-of-fourlogiccontactsfromthefourreactorprotectionchannels.1.4.5ENGINEEREDSAFETYFEATURESSYSTEMThissystemutilizesrelaycontactoutputfromindividualchannelsarrangedinthreeanalogsub-systemsandtwotwo-out-of-threelogicsub-systemsasshowninFigure7.1-4oftheupdatedFSAR.Thelogicsub-systemiswiredtoprovideappropriatesignalsfortheactuationofredundantengineeredsafetyfeaturesequipmentonatwo-of-threebasisforanygivenparameter.1.4.6DEGREEOFREDUNDANCYThedifferencebetweenthenumberofoperablechannelsandthenumberofchannelswhich,whentripped,willcauseanautomaticsystemtrip.1.5INSTRUMENTATIONSURVEILLANCE1.5.1TRIPTESTATRIPTESTisatestoflogicelementsinaprotectionchanneltoverifytheirassociatedtripaction.1-3AmendmentNo.137,157,225,273 3.5.2.53.5.2.63.5.2.7ControlRodPositionsa.Operatingrodgroupoverlapshallnotexceed25percent+/-5percent,betweentwosequentialgroupsexceptforphysicstests.b.Positionlimitsarespecifiedforregulatingcontrolrods.Exceptforphysicstestsorexercisingcontrolrods,theregulatingcontrolrodinsertion/withdrawallimitsarespecifiedintheCOREOPERATINGLIMITSREPORT.1.Ifregulatingrodsareinsertedintherestrictedoperatingregion,correctivemeasuresshallbetakenimmediatelytoachieveanacceptablecontrolrodposition.Acceptablecontrolrodpositionsshallbeattainedwithin24hours,andFQ(Z)andF:Hshallbeverifiedwithinlimitsonceevery2hours,orpowershallbereducedto:::;powerallowedbyinsertionlimits.2.Ifregulatingrodsareinsertedintheunacceptableoperatingregion,initiateborationwithin15minutestorestoreSDMto%deltaKlK,andrestoreregulatingrodstowithinrestrictedregionwithin2hoursorreducepowerto:::;powerallowedbyrodinsertionlimits.c.Safetyrodlimitsaregivenin3.1.3.5.DeletedAxialPowerImbalance:a.Exceptforphysicsteststheaxialpowerimbalance,asdeterminedusingthefullincoresystem(FIS),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.TheFISisoperableformonitoringaxialpowerimbalanceprovidedthenumberofvalidselfpoweredneutrondetector(SPND)signalsinanyonequadrantisnotlessthanthelimitintheCOREOPERATINGLIMITSREPORT.b.WhenthefullincoredetectorsystemisnotOPERABLEandexceptforphysicstestsaxialpowerimbalance,asdeterminedusingthepowerrangechannels(outofcoredetectorsystem)(OCD),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.c.WhenneitherdetectorsystemaboveisOPERABLEand,exceptforphysicstestsaxialpowerimbalance,asdeterminedusingtheminimumincoresystem(MIS),shallnotexceedtheenvelopedefinedintheCOREOPERATINGLIMITSREPORT.d.Exceptforphysicstestsifaxialpowerimbalanceexceedstheenvelope,correctivemeasures(reductionofimbalancebycontrolrodmovementsand/orreductioninreactorpower)shallbetakentomaintainoperationwithintheenvelope.VerifyFQ(Z)andFarewithinlimitsoftheCOLRonceper2hourswhennotwithinimbalancelimits.3-35AmendmentNo.10,17,29,38,39,50,120,126,142,150,179,211,219,273 TABLE4.1-1(Continued)CHANNELDESCRIPTIONCHECK(c)TEST(c)CALIBRATE(c)REMARKS>>19.ReactorBuildingEmergency3CoolingandIsolationCDSystemAnalogChannels:::Jc.3CDa.ReactorBuilding(1)(1)(1)WhenCONTAINMENTINTEGRITYis:::J.....4psigChannelsrequired.zb.RCSPressure1600psig(1)(1)NA(1)WhenRCSPressure>1800psig.c.Deletedd.ReactorBldg.30psi(1)(1)(1)WhenCONTAINMENTINTEGRITYispressureswitchesrequired.e.ReactorBldg.Purge(1)(1)(1)WhenCONTAINMENTINTEGRITYisLineHighRadiationrequired.(AH-V-1A/D)f.LineBreakIsolation(1)(1)(1)WhenCONTAINMENTINTEGRITYisSignal(ICCW&NSCCW)required.20.ReactorBuildingSprayNANASystemLogicChannel.l>-I21.ReactorBuildingSprayNA-.0130psigpressureswitches22.PressurizerTemperatureNAChannels23.ControlRodAbsolutePosition(1)NA(1)CheckwithRelativePositionIndicationa.ZoneReferenceSwitchNAR(1)NA(1)Verifyswitchfunctions24.ControlRodRelativePosition(1)NANA(1)CheckwithAbsolutePositionIndication25.CoreFloodingTanksa.PressureChannelsNANAb.LevelChannelsNANA26.PressurizerLevelChannelsNA 5.0DESIGNFEATURES5.1SITEApplicabilityAppliestothelocationandextentoftheexclusionboundary,restrictedarea,andlowpopulationzone.ObjectiveTodefinetheabovebylocationanddistancedescription.Specification5.1.1TheThreeMileIslandNuclearStationUnit1islocatedinanareaoflowpopulationdensityabouttenmilessoutheastofHarrisburg,PA.ItisinLondonderryTownshipofDauphinCounty,Pennsylvania,abouttwoandhalfmilesnorthofthesoutherntipofDauphinCounty,whereDauphiniscoterminalwithYorkandLancasterCounties.ThestationislocatedonanislandapproximatelythreemilesinlengthsituatedintheSusquehannaRiverupstreamfromYorkHavenDam.Figure5-1isanextendedplotplanofthesiteshowingtheplantorientationandimmediatesurroundings.TheExclusionAreaasdefinedin10CFR100.3,isa2,000ft.radius,includingportionsofThreeMileIsland,theriversurfacearoundit,andaportionofShelleyIsland,whichisownedbyExelonGenerationCompany,LLC.Theminimumdistanceof2,000ft.occursontheshoreofthemainlandinadueeasterlydirectionfromtheplantasshownonFigure5-1fortheExclusionArea.Figure5-3showingthephysicallocationofthefencedefinesthe"RestrictedArea"surroundingtheplant.Theminimumdistanceofthe"RestrictedArea"isapproximately560feetandisfromthecenterlineoftheTMIUnit2ReactorBuildingtoapointonthewesterlyshorelineofThreeMileIsland.TheminimumdistancetotheouterboundaryofthelowpopulationzoneistwomilesasshownonT.S.Figure5-2,whichalsodepictsthesitetopographyforaradiusoffivemiles.T.S.Figure5-3depictsthelocationsofgaseouseffluentreleasepointsandliquideffluentoutfalls(astabularizedonpage5-10),andthemeteorologicaltowerlocation(designatedas'weatherstation'onthefigure).5-1AmendmentNo.72,137,149,218 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