ML18017A284

Forwards Summary Rept of Safety Evaluations Approved During Period 940101-950508

ML18017A284
Person / Time
Site:	Susquehanna
Issue date:	11/15/1995
From:	BYRAM R G PENNSYLVANIA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
PLA-4385, NUDOCS 9511270008
Download: ML18017A284 (276)

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95%01OCP-7Z.IIiTheproposedactionistoinstallatwo(2)position(NORM-BYPASS)switchinthecontrolofthefollowingvalvestopreventcontainmentisolationandtoimproveoperatorresponsesothatEmergencyOperatingProcedures(EOPs)canbeperformedasintended:2)3)4)MSIVs-Div.1,ReactorProtectionSystem(RPS)-ControlLogicAandControlLogicCfor:1.1InboardMSIVs:HV-2F022AthroughD1.2OutboardMSIVs;HV-2F028AthroughDCIGHV-22603,Div.1CIGSV-22651,Div.1CIGSV-22605,Div.2QlJRdhBX:No.Chapters6,7,'l5oftheFSARandNUREG%776werereviewedtodetermineifthe.proposedactionhasaneffectonthespectrumofpostulatedinitiatingeventsforwhichtransientsoranticipatedoperationaloccurrencesandaccidentconditionswereanalyzed,Theproposedactiondoesnotaffectanyofthepostulatedinitiatingeventsidentifiedinchapters6,7,15ofFSARandNUREG-0776.Theconsequencesofanaccidentareriotchangedbythisproposedaction.Theadditionofthebypassswitchesdoesnotaffectthesafetyfunctionsofthe-existingcomponents.Thismodificationreducesthechanceofcoredamage.andcontainmentfailureduringATWSeventswhichdominatethecoredamageprobability.Therefore,this.modificationdoesnotincreasethepr'obabilityofoccurrenceofamalfunction.ofequipmentanalyzedintheFSAR.IINo.Withthismodification,thereisnopos'sibilityofcreatinganaccidentofadifferenttypethananypreviouslyevaluatedintheFSAR.ThismodificationinstallsG.E.CR2940bypassswitches,MDRisolationrelays,indicatinglights,fuses,fuseblocks,cablesandterminalblocks.Thecomponentsbeingaddedbythismodificationaredynamicallyqualifiedandanalyzedforinstallationintheirprop'osedlocations.IIINo.TechnicalSpecification3/4.4.7MSIVsrequiresthattwoMSIVspermainsteamlinebeoperablewithclosingtimesgreaterthanorequalto3andlessthanorequalto5seconds.Thisrequirementisinplacetocontainfissionproductsandtoensurethecoreisnotuncoveredfollowinglinebreaks.TheproposedactiondoesnotaffectanyTechnicalSpecificationrequirements.

95-002DCP.3UiidThismodificationremovestheexistingplugsintheUnits1and2upperandlowercablespreadingroomfloordrainsandinstallsrupturediscsattheendsofthedraindischargepipingthatarelocatedintheUnits1and2TurbineBuildings.Installingtherupturediscswillpreventwaterbackupintothecablespreadingrooms,andremovingthefloordrainplugswill.satisfytheFSAR9.5.1.2.14requirementtohavefloordrainstodrainanyfireprotectionwater.SJhfhthRY:No.Theremovalofthefloordrainplugsandadditionofrupturediscsinthedraindischargepipingdoesnotincreasetheprobabilityofoccurrenceorconsequencesofaninadvertent,fireoractuationofthesprinklersystemsinthecablespreadingrooms.ItdecreasestheprobabilityofoccurrenceortheconsequencesofamalfunctionofequipmentimportanttosafetysinceitpermitsremovaloffireprotectionwaterbeforeitcreatesafloodinghazardtoequipmentlocatedinthecablespreadingroomasispresentlydescribedinFSARSection9.5.1.2.14.IINoThismodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSARsinceitrestoresthefloordrainstotheopenconfigurationthatisdescribedintheFSAR(FSAR3.4,9.5.1.1.9,and9.5.1.2.14)forFireProtectionpurposeswhileprovidingtherequiredcontrolstructureleaktightness(seeFSAR6.4.2.3and6.4.2.4)throughanewrupturedisc.No.TheplannedmodificationwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifications.TechnicalSpecification3/4.7.2(ControlRoomEmergencyOutsideAirSupplySystem)isapplicabletothismodificationsinceit,requiresthat'theControlStructurebemaintainedatapositivepressureof1/8inchW.C.relativetotheoutsideatmosphere.'Theexistingplugsinthefloordrainsandsteelbarrierenclosingthelowercablespreadingroomsdraindischargepiping,inthecontrolstructureperformthisfunction.Withthischange,theControlStructurePressureIntegrityboundaryshiftsfromtheremovedfloordrainplugtothenewrupturediscandexistingdrainpipinglocatedintheTurbineBuilding.

9503OCP,IiiTheproposedactionistoremovepipesupportsEBB102-H24and.-H25connectedtoHPCIminimumflowbypassvalveHV-155F012inordertocorrectanerrorinpipingcalculation.fSlRlhL4dE:No.ThismodificationhasnoimpactonthedynamicqualificationofHV-155F012asdiscussedinSection3.9.3.2b.2oftheFSARsincetheactualdynamicaccelerationsatthevalveduringadynamiceventare.belowallowable.ThedesignstroketimewillremainwithintheFSARlimitof10secondsafterimplementationofthemodification.Thevalveleakagecriteriaisnotchangedbythismodification,nordoesitchangetheLLRTrequirementsofFSARSection6.2.6.3.Alsothismodificationwillnotaffectvalveoperabilityorcircuitsignallogic.Also,theHPCIsystemanditsbasisisnotaffectedwhichisaddressedinFSARSection6.3.2.2.1.Therefore,thismodificationwillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.No.TheproposedmodificationretainstheabilityofHV-155F012toperformitsintendeddesignfunction,asdescribedinFSARSections6.2A.3.3.3and.6.3.2.2.1andFSARTable6.2-12.ThemodificationdoesnotchangethestroketimeofthevalvebeyondthatpreviouslycontainedinthedesignbasisforSSESasdescribedinFSARTable6.2-12.Alsothismodificationdoesnotdecreasethevalvesallowableseismicaccelerationbelowtheactualvaluedeterminedinthepipinganalysis,asdescribedinFSARSection3.9.3.2b.2.Italsoassurestheabilitytoopenorclosethevalvewhenrequired,asdescribedinFSARSection6.2.4.3.3.3.and6.3.2.2.1andFSARTable6.2-12.Thismodificationdoesnotadverselyaffectthevalveleakage,asdescribedinFSARSection6.2.6.3andFSARTable6.2-22,nordoesitaffectanyotherequipmentintheHPCIsystem,asdescribedinFSARSection6.3.2.2.1.Basedontheaboveconclusions,theproposedmodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.ThemodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications'(TechSpecs),particularlyTechSpecsbases3/4.5.1,3/4.6.1.1,3/4.6.1.2.and3/4.6.3.Valvepressureboundaryintegrityandseatleakagearenotaffected.Thevalvestroketimeiswithinthedesignbasisanalysisboundsof10seconds,andtherearenoadverseeffectstoanyothersystems/componentsbythismodification.Therefore,thismodificationhasnoeffectontheHPCIsystemintendeddesignfunctionorthebasesofaboveTechSpecs.

95%04pcTheproposedactionistomodifyHV-255F012byincreasingtheactuatorsize,andbyreplacingthemotor,yokeclamp,andexistingcircuitbreaker.Thiswillincreasethepullouttorque,andprovideanimprovedrangeoftorqueswitchsettings.INo,ThemodificationhasnoimpactonthedynamicqualificationoftheMotorOperatedValve(MOV)asdiscussedinSection3.'9.3.2b.2oftheFSAR.ThenewMOVdesignstroketimewillbewithintheFSAR(Table6.2-12)limitof10secondsafterimplementationofthemodification.Theincreasedactuatortorquewillimprovethevalve'scapabilitytoisolate,whilenotadverselyaffectingthepressureretainingcapabilityofthevalve.ThevalveleakagecriterionarenotchangedbythismodificationnorwillthismodificationchangetheLLRTrequirementsofFSARSection6.2.6.3andTable6.2-22.Themodificationhasnoimpactontheseismicqualificationofcontrolcenter2D264sinceanewstarterisnotbeingadded.Theproposedmodificationwillnotincreasetheprobabilityofoccurrenceoftheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.,IINo.ConsideringthesummaryinsectionI,.itisconcludedthattheproposedmodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications(TechSpecs),particularlyTechSpecs3/4.5.1,.3/4.6.1.1,3/4.6.1.2,3/4.6.3and3/4.8.2.Valvepressureboundaryintegrityandseatleakagearenotaffectedandthevalvestroketimeiswithinthedesignbasisanalysisboundsof10seconds.Therearenoeffectstothesystemoranyofthecomponentsbythismodification.ThechangestotheDCpowersources,cablesandracewaysmeettheGeneralDesignCriteriaandcommitmentsoutlinedinTechSpec3/4.8.2.

95%05~CP-,Ui1Thepurposeofthismodificationistochangethecontrollogicofcoolin'gwatervalveF059topreventpotentialfloodingoftheBarometricCondenser,HPCIturbine,andsteamexhaustpiping.INo.ChangingthecontrollogicofthecoolingwatervalveF059doesnotincreasetheprobabilityofoccurrenceofanaccidentaspreviouslyevaluatedintheFSAR.ThemodificationonlychangesthepostaccidentoperationofvalveF059.ThismodificationdoesnotincreasetheconsequencesofanaccidentbecausethemodificationdoesnotchangetheaccidentmitigatingdesignorperformanceoftheHPCIsystem.Themodificationdoesnotincreasetheconsequencesofamalfunction.ThesesystemsaredesignedtofunctionintheeventofaHPCIfailureandarenotaffectedinanywaybythismodification.ItwasalsoconcludedthatthemodificationwillnotincreasetheoverallprobabilityofoccurrencesofamalfunctionofHPCIIINo.TheHPCIturbine,pump,piping,supportstructuresandinitiationlogicare*notbeingchangedbythismodification.ChangingvalveF059logictoparalleltheHPCIturbineoperationdoesnotcreatethepossibilityofan~accidentofadifferenttypebecausetheaffectedHPCIsystemcomponentsonlyoperateinresponsetoanaccidentandthemodifiedcomponentsonlyeffectpostaccidentoperations.Thismodificationdoesnotcreatea'possibilityforamalfunctionofadifferenttypebecausethereplacementtrip.relayhasthesamefailuremodesastherelayitreplacesandfailureofF059isalreadyaddressedas.afailureoftheHPCIsystem.IIINo.ChangingthecontrollogicofcoolingwatervalveF059doesnotreduceanymarginofsafetyasdefinedinthebasisfortheTechnicalSpecifications.Systeminitiationandflowdeliveryinresponsetoanaccidentarenotchangedbythismodification.

95%06C9.9ThepurposeofthismodificationistoreplacethevalveactuatormotorpiniongearandwormgearonHV-15766toreducethestroketimeandprovideadequatemarginbelowtheTechnicalSpecification(TechSpec)limitofthirtyseconds.No.ThemodificationhasnoimpactonthedynamicqualificationoftheMotorOperatedValve(MOV)discussedinSection3.9.3.2b.2oftheFSAR.Afterimplementationofthemodification,theMOVdesignstroketimewillbedecreasedto'approximately2?.3secondswhichisbelowtheTechSpec(Table3.6,3-1)limitofthirtyseconds.lnaddition,thedecreasedMOV.designstroketimewillimprovesystemresponse.Thismodificationdoesnotrequirechangestotheelectricalpowersupplyorcontrolportionofthevalve.Sincethevalve'spressureretainingcapabilityismaintained,theleakagecharacteristicsareunaffected,andthestroketimeiswithinthe'esignbasis,thismodificationwillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyanalyzedintheFSAR.No.Consideringthesummaryinsectionl,itisconcludedthattheproposedmodificationdoesnotcreatethepossibilityforanaccidentofmalfunctionof.~adifferenttypethanpreviouslyevaluatedintheFSAR.illNo.ThemodificationdoesnotreducethemarginofsafetydefinedintheBasesofanyTechSpecs,particularlyTechSpecbases3/4.6.1.1,3/4,6.1.2,3/4.6.2,and3/4.6.3,.Withtheresultoftheproposedmodificationbeingdecreasedvalvestroketimeandadequatethrust,theaboveTechSpecbaseswillbebettersupportedbytheimplementationofthismodification.Therefore,thismodificationhasnoeffectonthecontainmentisolationdesignfunctionorthebasisofthe,aboveTechSpecs.

9M07C,B,C,UiIThepurposeofthismodificationistoinstalleightadditionalvibrationtransducersoneachreactorrecirculationpumptoproperlymonitorthevibratorybehaviorofeachpump.INo.IINo.ThismodificationdoesnotincreasetheprobabilityofoccurrenceofanyaccidentevaluatedintheFSAR.TheinstallationofthisequipmentoritsfailurewouldnotbeaninitiatingcausefortheeventsanalyzedintheFSAR.Themodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety,Thismodificationenhancespumpmonitoringcapabilitiesandadecreaseintheprobabilityofamalfunctionofequipmentisexpected.Thismodificationdoesnotincreasetheconsequenceofanaccidentsincethemodificationdoesnotaffectanysafetyfunctionsofthesystem.Themodificationdoesnotincreasetheconsequencesofmalfunctionofequipmentsincethisequipment'sfailuretoproducevaliddataisnodifferentfromthepresentconfiguration.ThismodificationdoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSARsincenon-safetyequipmentisbeingaddedtomonitorpumpvibrationandfailureofthisequipmentwillnotresultinanaccident.Themodification'doesnotcreatethepossibilityofamalfunctionofadifferenttype,Failureoftheproposedequipmentdoesnotinvolveachangeinsystemoperationoraddadifferentfailuremode.IIINo.TheproposedactiontoenhancecapabilitytomonitorreactorrecirculationpumpvibrationhasnoimpactontheTechnicalSpecification(TechSpec}anddoesnotaffectthemarginofsafetydefinedinthebasisforanyTechSpecs.

95408OC-9*Thepurposeofthismodificationistoinstallanewactuatorstemandanewanti-rotationdevicetoHV-251F017A/B.ThiswillprecludeanyrotationoftheMotorOperatedValves(MOVs)duringclosure,andwillensurethelimitswitchsettingsarenotalteredduringvalvestroking.SUhdhSfE:INo.II'o.Theinstallationofthenewanti-rotationdevicesandactuatorstemstoMOVsHV-251F017AandBwillensurethevalvesfunctionproperlytosupportLPCIandSDCmodes,ofRHR.Thismodificationwilleliminatethepossibilityofmisalignmentofthelimitswitchesandsubsequentmotorfailurethatexistedwiththeoriginalstemcouplingdesign.Consideringtheabove,theactionstakeninthismodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.ThismodificationwillalsoenhancetheoverallreliabilityoftheMOVs,whileallowingthemtofulfilltheirdesignfunctions.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.ThereisnoincreaseintheconsequenceofanaccidentormalfunctionofequipmentimportanttosafetybecausethismodificationdoesnotchangetheoperationorfunctionofMOVsHV-251F017AandBortheRHRSystem.ConsideringthepointsstatedinsummaryI,theproposedactionstakenbythismodificationdo'notcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Theuseoftheanti-rotationdeviceforMOVsHV-251F017AandBwill,havenoadverseeffectsontheRHRSystemperformance.TheopeningandclosingtimeofvalvesHY-251F017AandBwillremainunchangedbythismodification.Consideringthisandthefactthatthemodificationwillmeetallapplicabledesigncriteria,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95%09DC->>...D,ThepurposeofthismodificationistoimprovetheoverallreliabilityoftheRPSpowerdistributionsystem.ThiswillbeachievedbyreplacingtheexistingEPAlogiccardswiththenewG.E.logiccards,disconnectingtheinstrumentgroundontheRPSDistributionPanels,andcoordinatingtheunderfrequencytriptimedelaysetpointwiththemaingeneratorunderfrequencyprotectionschemeandPfMinterconnection-requirements.No.TheproposedmodificationwillhavenoimpactonthepostulatedinitiatingeventsidentifiedintheengineeredsafetyfeaturesandaccidentanalysisofFSARChapters6and15.Thismodificationwillreducespurioustripsof.theRPSfromitspowersourcecircuits.Therefore,thereisnoincreaseintheprobabilityofoccurrenceofanaccident.ThesechangeswillresultinanEPAwithmorereliableoperationforthe'PSbusesundernormaloraccidentconditions.Thus,theproposedmodificationdoesnotincreasetheconsequencesofadesignbasisaccident.TheusesofthenewG.E.logiccards,whichhavethesamefunctionandsimilarsetpointsastheexistingEPAcards,willnotaffecttheperformanceofequipmentsuppliedbytheRPSbusesorincreasetheconsequencesofamalfunctionofanyequipment.Inaddition,disconnectingtheinstrumentgroundandchangingtheunderfrequencytimedelaysetpointdonotincreasetheconsequencesofamalfunctionofequipment.No.Thenewlogiccardisaplug-inreplacementfortheexistingcardwithadditionaltripstatusorindicationandcircuittestfeaturesanddoesnotmodifytheEPAprotection'ircuitconfiguration.ThenewunderfrequencytimedelaysetpointdoesnotchangeoraffecttheoperationofanyRPSload.TheremovalofthegroundloopswilleliminatesystemnoiseandproducemorereliableEPAoperation.Consideringallofthese'points,themodificationdoesnotcreatethepossibilityfo'ranaccidentofadifferenttypenordoesitcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.ThesetpointslistedinTechnicalSpecifications(TechSpecs)Section4.8.4.3.bareapplicabletothenewlogiccardsthatwillreplacetheexistingEPAcards.The'newunderfrequencytimedelaysetpointwillpreventaprematureSCRAMandaprobableLOOPbyfacilitatingcoordinationwiththePJMunderfrequencyloadsheddingprogram,ThenewtimedelaywillensurethatSSESwillnottripprematurelybeforethePPALsystemautomaticloadsheddingrelayshaveattemptedtostabilizethefrequencybysystematicallyremovingbulkpowerloads.ThenewG.E.logiccardshavealsoloweredthetripthresholdvoltagebandfrom2voltsto1voltthusreducingtheuncertaintybandpriortoreachingthetripsetpoints.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%10OCP-,UidThepurposeofthismodificationistoreconfigurethePOWERPLEXCMSsoftware.Thiswillcreateaseparatefilestructureandseparateexecutablemodulesfortheupratedandnon-upratedUnits.ThismodificationwillalsoenablePOWERPLEXCMSperformanaccuratecalculationofpercentagecorethermalpowerlevelandallowoutputoftotalcoreflowinMlbm/hr.No.Theproposedmodificationinvolvesanupgradeofnon-safetyrelatedsoftware,POWERPLEXCMS,residentonanon-safetyrelatedsystem,RDAS.ThePOWERPLEXCMSsoftwareisnotdesignatedasasystemimportanttosafetyanddoesnotaffectanysafetyrelatedsystems.Therefore,'heinstallationofDCP93-5006doesnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.No.TheinstallationofDCP93-5006onlyrequireschangestothePOWERPLEXCMSsoftwareresidentontheRDAScomputersystem.ThisDCPdoesnotchangeanyofthe'routinesinthePOWERPLEXCMSthatcalculatecorereactivity,corepowerdistribution,coreexposure,orthermallimits.Therefore,theinstallationofDCP93-5006doesnotcreateapossibilityforanaccidentormalfunctionofadifferent.typethananyevaluatedintheFSAR.IIINo.TheproposedmodificationstothePOWERPLEXCMSsoftwarewillnotchangethecalculationofcorereactivity,corepowerdistributions,coreexposures,orthermallimits.Therefore,theinstallationofDCP93-5006doesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95%11ThepurposeofthismodificationistomodifyHY-255F003byreplacingtheactuator,motor,yokeclamp,stemnut,adapterplate,anddisc.Thereplacementactuatorwillbelarger(SMB-1-40toSMB-2-60)toincreasethestalltorqueandprovidearangeofacceptabletorqueswitchsettingsforthevalveunderthecurrentdesignrequirements.No.ThemodificationhasnoimpactonthedynamicqualificationoftheMotorOperatedValve(MOV)asdiscussedinSection3.9.3.2b.2oftheFSARsincetheactualaccelerationsofthevalveduringadynamiceventarelessthantheallowableaccelerations.ChangingHV-255F003motoractuatorwillprovidesufficientthrusttoinsurethevalvefunctionsduringalldesignconditions.Theabilitytoopenorclosethevalvewhenrequiredisnotaffectedbythemodification.Thevalve'spressureretainingcapabilityismaintained,theleakagecharacteristicsareunaffected,andthestroketimeremainswithinthedesignbasis.Therefore,thismodificationwillnotincreasetheprobabilityofoccurrencesortheconsequencesofanaccidentor.malfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.IINo.ConsideringthepointsinsummaryIandthefactthatthemodificationdoesnotaffectanyotherequipmentintheHPCIsystem,itisconcludedthattheproposedmodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.ThemodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications(TechSpecs),specificallyTechSpecbases3/4.5.1,3/4.6.1.1,3/4.6.1.2,3/4.6.3,and3/4.8.2.Valvepressureboundaryintegrityandseatleakagearenotaffected.Thevalvestroketimeiswithintheaccidentanalysisboundsof50seconds.Therearenoeffectstoanyofthesystemorcomponentsinthismodification.Therefore,thismodificationhasnoeffectontheaboveTechSpecs.

95%12C.>>.UThepr'oposedmodificationwillreplacetheexistinghighpressurefu'ellinesonDieselGenerators(D/Gs)AthroughEwiththeenginemanufacturer's(Cooper-Bessemer)improveddesign.Thiswilleliminaterepeatedfuelleaksanddeliveryvalvefittingfailures.Kh5lhRY:No.Thismodificationdoesnotincreasetheprobabilityoroccurrenc'eofanaccidentpreviouslyevaluatedinthe'FSARsince'/Gfailureisnotanaccidentinitiator.ThismodificationdoesnotincreasetheprobabilityofoccurrenceormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Replacementofthehighpressurefuellineandassociatedfittingswithanewimproveddesign,reducestheprobabilityoffailureinthefuelsystemandreducestheprobabilityofequipment'alfunctions.TheproposedmodificationdoesnotincreasetheconsequencesofanaccidentaspreviouslyevaluatedintheFSAR.Thismodificationimprovesthereliabilityofthehigh'pressurefueloilsystemandimprovestheoperabilityofthedieselengine.Therefore,availabilityoftheD/Gisenhanced,providingassurancethatpowertoESFloadsaremet.ThismodificationdoesnotincreasetheconsequencesofmalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No..ThismodificationdoesnotcreateapossibilityforanaccidentofadifferenttypethananyevaluatedintheFSAR.ThefunctionandoperationofthefuelsystemandtheD/Gsareunchange'd.Therefore,iftheaffectedcomponents,aregoingtofail,thefailuremodewouldbeessentiallythesameastheexistingconfiguration.,TheoperationoftheD/Gshavenotbeenidentifiedasaninitiatorforanyaccidentandthismodificationdoesnothavethepossibilitytocreateadifferentty'peofaccident.ThismodificationdoesnotcreateapossibilityforamalfunctionofadifferenttypethananyevaluatedintheFSAR.INo.TheproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifications(TechSpecs)particularlyTechSpecs3/4.8.1,3/4.8.2,3/4.8.2.1,3/4.8.2.23/4.8.3.1,3/4.8.3.2.OnlyoneD/Gwillbeoutofserviceatatime.Theconditionsforplantshutdownandrefuelingduringoperationalconditions4and5willnotbeaffectedbythismodification.ThismodificationalsomeetstherequirementsforDCandACelectricalpowersourcesrequiredduringplantshutdownandplantoperationrespectively.AlsovalveoverloadprotectionwillbeautomaticallybypassedwhenD/G"E'snotalignedtotheClass1Edistributionsystem.

95%130.>>,Ili>>ThepurposeofthismodificationistomodifyHV-155F001by'replacingtheSMB-1-60actuatorwithanSMB-2-60actuatorandthe4.3HPmotorwithahighertorquerated4.3HPmotor.Thereplacementactuatorwillbelarger(SMB-1-60toSMB-2-60)toincreasethestalltorqueandtoprovidegreaterthrusttoovercomeavalveseat'leakageproblem.No.Thismodificationhasnoimpactonthedynamicqualifications'ofthe'MotorOperatedValves(MOVs)asdiscussedinSection3.9.3.2b.2oftheFSARsincetheact'ualaccelerationsatthevalveduringadynamiceventarelessthantheallowableaccelerations.TheMOVdesignstroketimewillbewithintheFSAR(Table6.3-8and7.3.1.1a.1.3.7)designlimitof20seconds,ThechangingoftheHV-155F001motoractuatorwillprovidesufficientthrusttoensurethevalvefunctionsduringalldesignconditions.Thevalve'spressureretainingcapabilityismaintained,andtheleakagecharacteristicsareunaffected.FSARSection,6.3,2.2.1thataddressestheHPCIsystemanditsbasisisnotaffectedsincesystemperformanceandfunctionisnotimpactedbythismodification.Consideringthediscussionabove,this.~modificationwill'notincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.No.ConsideringthepointsstatedinsummaryI,theproposedactionstakenbythismodificationdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications(TechSpecs)particularlyTechSpecs3/4.5.1and3/4.8.2.ThismodificationhasnoeffectonTechSpec3/4.5.1becausetherearenoeffectstoanyofthesystemorcomponentsbythismodification,valveintegrityandseatleakagearenotaffected,andthestroketimeiswithinthelimitof20seconds.ThechangetotheDCpowersources,cablesandracewaysmeetstheGeneralDesignCriteriaandcommitmentsthatensurescompliancewiththefunctionsspecifiedinTechSpec3/4.8.2.

9M14ThepurposeofthismodificationistomodifyHV-255F001byreplacingtheSMB-1-60actuatorwithanSMB-2-60actuatorandthe4.3HPmotorwithahighertorquerated4.3HPmotor.Thereplacementactuatorwillbelarger(SMB-1-60toSMB-2-60)toincreasethestalltorque.Thelargeractuatorwillalsoprovidegreaterthrusttoovercomeavalveseatleakageproblem.INo.ThismodificationhasnoimpactonthedynamicqualificationsoftheMotorOperatedValve(MOV),.discussedinSection3.9.3.2b.2oftheFSARsincetheactualaccelerationsatthevalveduringadynamiceventarelessthantheallowableaccelerations.TheMOVdesignstroketimewillbewithintheFSAR(Table6,3-8,and7.3.1.1a.l.3.7)designlimitof20seconds.ChangingHV-255F001motoractuatorwillprovidesufficientthrusttoensurethevalvefunctionsduringalldesignconditions,Theabilitytoopenorclosethevalvewhenrequiredisnotaffectedbythemodification.TheHPCIsystemanditsbasisarenotaffectedsincesystemperformanceandfunctionarenotimpactedbythismodification.Consideringthediscussionabove,themodificationwilln'otincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.NoIIINoConsideringthepointsstatedinsummaryI,theproposedactipnstakenbythesemodificationsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications(TechSpecs)particularlyTechSpecs3/4.5.1and3/4.8.2.ThismodificationhasnoeffectonTechSpec3/4.5.1becausetherearenoeffectstoanyofthesystemorcomponentsbythismodification,valveintegrityandseatleakagearenotaffected,andthestroketimeiswithinthelimitof20seconds.ThechangetotheDCpowersources,cablesandracewaysmeetstheGeneralDesignCriteriaandcommitmentsthatensurescompliancewiththefunctionsspecifiedinTechSpec3/4.8.2.

95%15NL-94401,Unit1TheproposedmodificationinitiatesabypassthatwillisolateathruwallleakfromthepipingadjacenttoLSH-10112BbyclosingtwomanualvalvesintheMainSteamSupplySystem.Sllh1hfddiLNo.II'o.Theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetywillnotincreasewiththeimplementationofthisbypass.AreviewofFSARChapter15wasperformedtodetermineiftheproposedactionhasanyaffectontheaccidentanalysisalreadyevaluatedforSSES,anditwasdeterminedthattheaccidentevents/causesdescribedinChapter15arenotaffectedbychangestothesystemsorcomponentsincludedinthisbypass.Theproposedbypasshasnosafetyrelatedfunction.Implementationofthebypass'illnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyinChapter15oftheFSAR.IIINo.Consideringtheabovediscussion,theproposedbypasshasnoaffectonthebasisofanyTechnicalSpecifications(TechSpecs),particularlyTechSpecs3/4.4.4.7and3/4.6.1.4.

9&016DCThepurposeofthismodificationistoupgradetheRBCWSchillersbyreratingthechillersforacapacityof718tons,andbyreplacingshroudsandimpellerswithcomponentsofhigherperformanceratings.Thiswillincreasethechillerheatremovalcapacity.INo.TheChilledWaterSystemperformsno'safetyrelatedfunctionotherthancontainmentisolation.Therefore,theproposedmodificationdoesnotincreasetheprobabilityofoccurrenceofanaccident.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety.TheequipmentinvolvedinthismodificationistheRBCWSChillerswhichdonotperformanyplantfunctionswhichareimportanttosafety.Also,theadditionalheatrejectedthroughtheServiceWaterSystemtothecoolingtowersisinsignificantandtheServiceWaterSystemdoesnotperformanyplantfunctionswhichareimportanttosafety.TheproposedmodificationdoesnotincreasetheconsequencesofanaccidentaspreviouslyevaluatedintheFSAR.NoneoftheseaccidentsoreventstakecreditforRBCWSorSWSoperationbecausetheyarenon-safetysystems.Thismodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafety.Themodificationdoesnotaffectanyotherequipmentthatcouldpotentiallyincreasetheconsequencesofamalfunctionofequipmentimportanttosafety.IINo.ThismodificationdoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSAR.Thismodificationdoesnotinvolvechangesinsystemfunctionorcontributetoadifferenttypeoffailuremode.Failureofthechillersdoesnotinitiateanaccidentofanytypeanddoesnotchallengethesafetyfunctionofothersystems.Themodificationdoesnotchangethefunctionofthechillersortheovercurrentrelaysanddoesnotchangetheoperatingmodesofthechillers.ThereforethismodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Thismodificationdoesnotreducethemarginofsafetydefinedinthebases'ofanyTechnicalSpecifications(TechSpecs)particularlyTechSpecSections3.6.1.7and3.8.3.2.ThismodificationhasnoeffectonTechSpecSection3.6.1.7becausethismodificationimprovestheabilityofthesystemtoachievethedesignchilledwaterloopsupplytemperatureof50degreesFunderallpoweruprateconditions.Asaresult,systemperformanceusingonechillershouldprovidemoremarginformaintainingtheTechSpeclimit.ThismodificationhasnoeffectonTechSpecSection3.8.3.2.Thismodificationwillnotaffectthesafetyfunctionofthe4.16kVESSwitchgearandthereforewillnotreducethemarginofsafetyasdefinedinthebasisforthisTechSpec.

TheproposedactionistoaddanautomatictransferlogictothebreakertripcircuitryofeachdivisionalizedloadsuppliedfromtheUnit1ChannelC4.16kVBus.TheautomatictransferlogicpreventsarandomsinglefailureoftheUnit1ChannelAbatteryfromaffectingtheoperabilityofmorethanonechannelofsafetyrelatedequipment.INo.TheadditionofanautomatictransferlogicintothebreakertripcircuitryofeachdivisionalizedloadsuppliedfromtheUnit1ChannelC4.16kVBusdoesnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapters6and15oftheFSAR.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR,Thismodificationiswithintheerrorboundsassociatedwiththeoriginaldesigncalculationsanddoesnotconstituteasignificantincreaseinprobabilityoftheoverallsystemmalfunction.ThismodificationwillassurethatthetripcircuitryoperatesforarandomsinglefailureoftheUnit1ChannelAbatteryshouldthesinglefailureoccurcoincidentwiththeaccidentandaLOOPcondition.Therefore,thismodificationdoesnotincreasetheconsequencesofanaccident.TheMDRrelays,theindicatinglights,thedisconnect'switches,thefusesandthebreakersareallqualifieddevices.Therefore,theproposedmodificationdoesnotincrease.theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Chapters6and15oftheFSARwerereviewedtodetermineiftheproposedactionhadthepotentialofcreatingapostulatedinitiatingeventthatwouldcreatethepossibilityforanaccidentofadifferenttype.Thereviewdeterminedthatthiswillnothappen.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechriicalSpecifications(TechSpecs)particularlyTechSpecs3/4.7.1and3/4.8.3.TechSpec3/4.7.1makesreferencetotheoperabilityof.theEmergencyServiceWaterSystemandResidualHeatRemovalServiceWaterSystem.TheproposedactiondoesnotaffecttheoperabilityrequirementsoftheServiceWaterSystems.AlsotheoperabilityrequirementsoftheControlRoomEmergencyOutsideAirSupplySystemarenotaffectedbytheproposedaction.Therefore,thismodificationhasnoeffect.onTechSpec3/4.7.1.TheproposedactionensuresoperabilityoftheUnit1ChannelC4.16BusforaUnit1ChannelAbatteryfailurecoincidentwithaLOCA/LOOPconditiontherebymaintainingtheexistingmarginofsafetyfortheUnit1ChannelC4.16kVBus.Therefore,thismodificationhasnoeffectonTechSpec3/4.8.3~

9M18Theproposedactionistoaddanautomatictransferlogictothebreakertripcircuitryofeachofthedivisionalizedaffiliatedloads'suppliedfromtheUnit1ChannelD4.16kVBus.TheautomatictransferlogicpreventsarandomsinglefailureoftheUnit1ChannelBbatteryfromaffectingtheoperabilityofmorethanonechannelofsafetyrelatedequipment.No.No.TheadditionofanautomatictransferlogicintothebreakertripcircuitryofeachdivisionalizedoraffiliatedloadsuppliedfromtheUnit1ChannelD4.16kVbusdoesnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapters6and15oftheFSAR.Thereforetheproposedactiondoesnotincreasetheprobabilityofoccurrenceofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.TheadditionofanautomatictransferlogiciritothebreakertripcircuitryofeachdivisionalizedoraffiliatedloadsuppliedfromtheUnit1ChannelD4.16kVBusdoesnotaffectactuationofthebreakertripcircuitry.ThismodificationwillassurethatthetripcircuitryoperatesforarandomsinglefailureoftheUnit1ChannelBbatteryshouldthesinglefailureoccurcoincidentwiththeaccidentandaLOOPcondition.Therefore,theproposedmodificationdoesnotincreasetheconsequencesofanaccident.TheMDRrelays,theindicatinglights,thedisconnectswitches,thefusesandthebreakersareallqualifieddevices.Therefore,the.proposedmodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.~\Chapters6and15oftheFSARwerereviewedtodetermineiftheproposedactionhadthepotentialofcreatingapostulatedinitiatingeventthatwouldcreatethepossibilityfoFanaccidentofadifferenttype.Thereviewdeterminedthatthiswillnothappen.No.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications(TechSpecs)particularlyTechSpecs3/4.7.1and3/4.8.3.TechSpec3/4.7.1makesreferencetotheoperabilityoftheEmergencyServiceWaterSystemandResidual.HeatRemovalServiceWaterSystem.TheproposedactiondoesnotaffecttheoperabilityrequirementsoftheServiceWaterSystems.Also,theoperabilityrequirementsoftheControlRoomEmergencyOutsideAirSupplySystemarenotaffectedbytheproposed,action.Therefore,thismodificationhasnoeffectonTechSpec3/4.7.1.TheproposedactionensuresoperabilityoftheUnit1ChannelD4.16BusforaUnit1ChannelBbatteryfailurecoincidentwithaLOCA/LOOPconditiontherebymaintainingtheexistingmarginof,safetyfortheUnit1ChannelD4.16kVBus.Therefore,thismodificationhasnoeffectonTechSpec3/4.8.3.

95%19OCTheproposedmodificationwillcleartheCirculatingWaterPump'ouse(CWPH)reartruckdoorwayandsupplytwohoseconnections,relatedpiping,'ndvalvestotie-inthevendordemineralizertruck.Thesemodificationswillprovideautomaticisolationofthevendortruck'onhighsilicaorhighconductivity,theabilitytorinseinthetrucktotheneutralizerbasinandtheabilitytoisolatetheplantpipinganddrainthevendorhosesduringfreezingconditions.No.FSARChapters6and15werereviewedtoseeiftherearepossibleadverseconsequenceswithrespecttotheinstallationofthismodification.LossofsealwatertotheCirculatingWaterPumpscouldcausethemtotripresultinginaturbinetripandlossofcondenservacuum.Thismodificationwillnotresult'inanincreaseintheprobabilityofoccurrenceoftheseeventsduetothestoragecapabilitiesoftheWellWaterandClarifiedWaterStorageTanksandduetothecapabilitytomakeclearwaterfromavendortruckwithin24hoursofnotification..Therefore,the.probabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSARisnotincreased.TheMakeupDemineralizedWater;DomesticWater,andRawWaterTreatmentSystemsandthesystemstowhichtheyconnectarenotsafetyrelated.TheprobabilitythatacomponentfailurethatwouldpreventtheDomesticWater,MakeupDemineralizedWater,orRawWaterTreatmentSystemsfromperformingtheirdesignfunctionisnotincreasedbythismodification.AlsotheprobabilityofcontaminatingtheDeminWaterStorageTankisreducedbythismodification.Therefore,theprobabilityofoccurrence-ofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Theproposedactiondoesnotinvolve.aprecursoroforasignificantcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewill.benoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheproposedmodificationwillbedesignedtomeetalltherequirementsoftheASME/ANSI831.1Codetoensureitsstructuralintegrity,andguaranteethattheDomesticWater,MakeupDemineralizedWater,andRawWaterTreatmentSystemswillbeabletooperateandfunctionasspecifiedintheFSAR.TheproposedactionwillnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemgovernedbyTechnicalSpecifications(TechSpecs).NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythismodification.'

95%20CP,LTheproposedmodificationwillinstallapressureretainingthreadedpipecaponthe2"ANSIB31.1(HBDportionofDCA-202)drainlinedownstreamoftheReactorCoolantPressureBoundary(RCPB)ASMESectionIIIClassIisolationvalves243F051Aand234F052A.Thiswillresolvetheprobablevalveseatleakageproblems,preventtheleakagefromcontributingtotheunidentifiedReactorCoolantleakagetothedrywellsump,andpreventfurtherdegradationofthevalves'eatingcapabilities.No.IINo.IIINo.Thepostulatedfailureofthe,HBDpipingdoesnotpresentanewmodeoffailureforthelos~f-coolantaccident.Thechangedoesnotaffecttheoperationorfunctionof.,theReactorRecirculationSystem(RRS)ortheRCPB.Theproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR..AsdiscussedinSummaryI,themodificationdoesnotintroduceanynewfailuremodesfortheaffectedsystems,nordoesitimpactthesystemsinsuchamanner,thattheprobabilityofanytypeofaccidentwouldbeincreased.Therefore,theproposedmodificationdoesnotcreateapossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.TheUnit2TechnicalSpecifications(TechSpec)limitsthatareapplicabletothis'ystemwithrespecttothismodificationaredescribedinTechSpecs3/4.4.3(34.3.2)and3/4.4.8.ThismodificationprovidesasecondarypressureretainingboundarydownstreamoftheASMESectionIIIboundarythatisintendedtocontainleakage(otherwisecontributingto"unidentifiedleakage")duetonormalwearoftheboundaryisolationvalvesuntilthevalvesarereplacedinthenearfuture.ThismodificationwillnotadverselyimpactthestructuralintegrityoftheASMECodeClass1Componentsnorwillitimpedeanyperiodicinspectionorhydrotestingprocedures.TheconfigurationcreatedbythismodificationdoesnotaffecttheexistingboundariesofthebasesfortheTechSpeclimitsorprogrammaticrequirementsidentified.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

9M21~C-.,C,DCP93-3093A58,'nit2TheproposedmodificationwillmodifytheUnit2RHRandCoreSpraypumpdischargecheckvalves.Thismodificationwill:1)Limitdiskopeningangletoapproximately60degreestoenhancetheclosingcapabilityfollowingpumpshutdown2)Ensurestabilityofdiskduringminimumandmaximumflowconditions3)Eliminatethevalvehandlewhileinstallingvalvediscpositionindicationoffofthevalvehingepin4)Achieveproperclearancestoavoidinterferencebetweenmovingpartsandthevalvebody.No.Thecheckvalveisnotconsideredahighstresslocation,wherepipebreakscouldoccur.Further,themodifiedcheckvalvesmeetalldesignbasispressureandseismicrequirements.Therefore,thereisnoincreaseintheprobabilityofoccurrenceofahighenergypipebreakresultingfromthismodification.Modificationofthevalvesmaintainsthedesignbasisstructuralintegrity,meetssystemflowrequirements'andsignificantlyimprovesthedisk.closingand,seatingcapabilities.Therefore,theprobabilityofmalfunctionofthepumpdischargecheckvalveshasnotincreased.Consequently,reliabilityofsystemoperationandoperationofequipmentimportant.tosafetyintheCoreSprayandRHRsystemshasnotdecreased.Thismodification.doesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.MalfunctionofthepumpdischargecheckvalvesisnotpreviouslyevaluatedintheFSARandisnotconsideredthebovndingcaseforcomponentfailure.IINo.ThismodificationdoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSAR.System(CoreSpray&RHR)functionisunchanged.Component(Punipdischargecheckvalves)functionisunchanged.Flowthroughthepumpdischargecheckvalvesmeetsdesignbasisrequirementsforallmodesofoperation.Modificationsofthevalvesimprovesthecapabilitytoopen,andclosewhilemaintainingdynamicqualificationandpositionindicationfeatures.ThismodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.ModificationofthevalvesenhancesthevalvesoperationalcapabilitiesandisinaccordancewithASMEBRPVcoderequirements.IIINo.TheTechnicalSpecifications(TechSpecs)reviewedforthisparticularmodificationwere2.1.4,3/4.3.3,3/4.4.9,3/4.5.1,3/4.5.2,3/4.5.3,3/4.6.2:2,3/4.6.2.3,and3/4.9.11.ThemarginofsafetyisnotreducedfortheseparticularTechSpecs.

95%22EC~,UThemodificationmodifiestheprocessdesignoftheReactorWaterCleanup(RWCU)Systemtomatchthecurrentoperatingvalvelineupandnormalmodeflowrates.SURRlhRY:hINo.ThismodificationdoesnotincreasetheprobabilityofanyaccidentevaluatedintheFSARincludingFSARSections3.6,5.4.8,6,and15.Theproposedmodificationisdesignedin~accordancewiththeoriginalClass1Pipingrequirement,ImplementationofthismodificationdoesnotimpacttheoriginaldesignrequirementsoftheReactorCoolantPressureBoundary(RCPB)ortheRWCUSystempipingandvalves.Thedynamicqualificationofthevalvemotoroperator'assemblyisnotaffected.Theproposedmodificationdoesnotimpacttheovercurrentprotectionofthecontainmentpenetrationboxesbecausethecircuitsaredisconnected.'Also,theproposedmodificationdoesnotaffectthesafetyfunctionoftheRWCUSystem.Therefore,theproposedmodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety.Thismodificationdoesnotincreasetheconsequenceofam'alfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.ThemodificationmaintainstheRCPB,doesnotcauseamalfunctionoftheF101andF103valves,orcausemalfunctiontoanyotherequipmentimportanttosafetypreviouslyevaluatedintheFSAR.CIINo.Theproposedmodificationdoesnotmakeanychangetothereactorcoolant'ressureboundaryortoanysafetysystems.ThismodificationdoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSARsinceallpotentialfailuremodes(mechanicalandelectrical)havebeenconsidered,andappropriatedesignfeatures(dynamic,mounting,electrical,separation,isolation)havebeenincorporatedintothedesign.Thesedesignfeatureseliminateallcrediblefailuresthatcouldpotentiallyresultinanunanalyzedevent.No.Thismodificationdoesnotreducethemarginofsafetyasdefi'nedinthebasisforanyTechnicalSpecification(TechSpec)particularlyTechSpecSection4.4.1.1.2.3.TheacceptancelimitofmaintainingtemperaturedifferentialbetweentheRxBottomHeadDrainandthesteamdomepriortostartingofanidlerecirculationloopduringahotstandbycondition,isnotchangedandwillnotbeexceededbyplacingtheUnitwithvalvelined-upasimplementedbythismodification.

9~23ThemodificationinstallssheetmetalcabletraycoversoncabletrayE2P)16.ThecompletedmodificationwillsupportcriteriaofDeviationRequest¹16intheFireProtectionReviewReport(FPRR).SUhlhdhlE:No.AIIcabletraycoverinstallationwillbedoneinaccoidancewithCDS-16,ThermalandStructuralLoadingAnalysisforCableTraysdesigncriteria.Allcabletraycoveringwillbeinstalledseismically,therefore,nosafetyimpactconcernscanresult.Noadverseampacityorstructuralloadingconcernswillresultfromthismodification.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Theproposedmodificationdoesnotaffectanysafetyfunctionsof,theClass1EPowerSystem.Alsothismodificationprovidesthenecessarymeanstoinhibitfirepropagationinconjunctionwiththefireprotectiondesignbasisandwillinnowayaffecttheoffsitedosethepublic.Therefore,thismodificationdoesnoti~creasetheconsequencesofanaccident.Noadverseaffectswillhappentoanyoftheequipmentusingthiscabling.Therefore,therewillbenoincreasein.theconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyasaresult'fthismodification.llNo.InstallingcabletraycoversoncabletrayE2PJ16willnotresultinanyrisktopublichealthandsafety.Therefore,thismodificationdoesnotcreatethepossibilityfor'ewaccidentscenariosormalfunctionsofadifferenttypethananyevaluatedintheFSAR.illNo.Thep'roposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifications(TechSpecs)particularlyTechSpecBasis3/4.8.1,3/4.8.2,and3/4.8.3.TheperformancecharacteristicsofallE2PJ16traycablingwillessentiallyremainthesameasdelineatedbythementionedTechSpecs.ThemarginofsafetyinherentintheDeviationRequestisnotreducedsincetheenclosedcableshavebeenanalyzedusingtheestablishedAppendixRmethodologies,andtheexclusionoftheenclosedcablefromareacombustibleloadingtotalsis.consistentwiththeapproachtakenwithotherenclosedtraysectionsinthesameDeviationRequest.

95%24SCl.,',Thepurposeofthismodificationistoincreasethesetpointforthegeneratorhydrogenlowpressureswitch,PSL-20184,toalarmat65psig,whileleavingthemaximumhydrogengasoperatingpressureunchanged.Raisingtheminimumhydrogengaspressureto65psigfrom60psigwillensureoperationwithinthegeneratorreactivecapabilitycurvewheneverpowerfactorsaregreaterthan0.95.RlMHAIE'No.Theproposedmodificationisconsistentwiththeoriginaldesign.Therefore,increasingthesetpointofPSL-20184doesnotincreasetheprobabilityofoccurrenceofanaccidentaspreviouslyevaluatedintheFSAR.Theproposedmodificationalsodoesnotincreasetheconsequencesofanaccidentas'previouslyevaluatedintheFSARnordoesitincreasetheprobabilityofoccurrenceofamalfunction'ofequipmentaspreviouslyevaluatedintheFSAR.IINo.Theproposedmodificationdoesnotchangethefunctionorperformanceofthehydrogencoolingandtemperaturecontrolsystem.Also,thissystemisnotusedinanaccident.Consideringthesestatements;the-proposedmodificationdoesnotcreateapossibility,foianaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.AreviewoftheTechnicalSpecifications(TechSpecs)confirmedthatthehydrogencoolingandtemperaturecontrolsystemforthemaingeneratorisnotreferenced.Therefore,thismodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

'94425Theproposedmodificationistoopenfourstate'slinksinPanelTB-0150.Openingthelinksremovestheintermittentgroundingproblemfromtheannunciatorcircuitsothatthealarmwillbeclearandfunctionalfortheotherthreeinboardvacuumbreakers.INo.FromFSARSection6,2,thesafetyfunctionofthevacuumbreakersconcernsprovidingvacuumreliefforthedrywellduring'aninadvertentdrywellsprayorsmallbreakLOCAevent,minimizingthepressuredifferentialacrossthedrywellfloorduringLOCAevents,andmaintainingcontainmentintegritybyremainingclosedduringaLOCAtopreventsteambypasstothewetwellairspace.Withthealarmsdefeated,thevacuumbreakerscouldopenduetoapressurebuildupinthewetwell(orvacuuminthedrywell).However,thisbypassonlyaffectstwoinboardvalves,andiftheinboardandoutboardvalvesontheCandElineswouldopentheoutboardannunciatorwouldalarm.Consideringthediscussionabove,themodificationwillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheFSAR.II.No.Thedefeatingoftheinputtothealarmfromthevacuumbreakerdoesnotaffect'thesafetyfunctionoroperabilityofthevalve.Itwasdeterminedthattheannunciatordoesnotprov'ideasafetyrelatedfunction,anditsabsencedoesnotcreateanypossibilitiesforaccidentsormalfunctions.IIINo.The-existingannunciatorproblem'alarmin)doesnotaffectvacuumbreakeroperability.VacuumbreakersareclosedandoperableasrequiredbyTechnical~Specification3.6.4.DefeatingtheinputfromtheClandE1vacuumbreakerstotheannunciatordoesnotaffectvacuumbreakeroperability.Thus,theTechnicalSpecificationbasis(3/4.6.4)isnotaffected,andmarginsofsafetyareunchanged.

95-026ThepurposeofthismodificationistomodifytheUnit2ClassIE250VDCOV/UVannunciatorisolationrelaycircuits.ThiswilllimitthevoltageacrosstheClassIE250VDCOV/UVannunciatorduringcircuitenergization.No.Theproposeddoesnotincreasetheprobabilityofanaccident.Therelaycircuitsmonitoronlyovervoltageandundervoltageconditionsandprovidenosystemprotectivefunction.Also,theexistingrelays,ZenerDiodes,andassociatedcomponentsaredynamicallyqualifiedforthisapplication,aredynamicallymounted,andarelocatedinamildenvironment,ThesolefunctionoftheexistingCBcDundervoltageandovervoltagerelaysistomonitorforundervoltageandovervoltageontheClass1E250VDCSystemandprovideindicationtotheControlRoomduringasystemdisturbance.Theundervoltageandovervoltagerelaysarenotnecessary'odetermineoperability.Afailureoftherelaystoalarmdoesnot.causeabatterychargerproblemorfailure.Therefore,theproposedmodificationdoesnotincreasetheprobabilityofoccurrenceorconsequencesofamalfunctionofequipment,AfailureoftheundervoltageandovervoitagerelaysdoesnotimpactthesafeoperationoftheClass1E250VDCSystem.Also,therearenootherfailuresintheClass1E250VDCSystemthatcanbepostulatedasaresultoftheproposedchanges.Therefore,itisconcludedthatthe'proposedmodificationdoesnotincreasetheconsequencesofanaccident.II-8oIIINoThefunctionoftheexistingrelayshasnotchangedfromthatofthepreviousinstallation.Nosafetyimpactsexistfortheproposedchangestothe250VDCequipment.Therefore,thereisnopossibilityofcreatinganaccidentofadifferenttype.ThenewZenerDiodeandresistorarequalifiedcomponents.Therefore,therearenosituationsthatcouldcreatethe'possibilityofamalfunctionofadifferenttype.Theproposedmodificationhasaminimalincreaseintheloadofthe250VDCSystem,buthasnoappreciablereductioninthemarginofsafetythatisthebasisforthebatteryoperabilityrequirementspresentedinTechnicalSpecification(TechSpec)4.8.2.l.d.TheTechSpecoperabilityrequirementsthatareusedasthebasestodemonstrateoperabilityofthe250VDCSystem,arenotaffectedbytheproposedmodification.Therefore,themarginofsafetyisnotadverselyaffectedbythisdesignchangepackage.

95C27c-.uThepurposeofthismodificationistoreplacephase"B"(2X101B)andphase"C"(2X101C)transformersfor.theUnit2McGrawEdisonGSUtransformerwithnewABBtransformers.Thiswilldecreasethepossibilityofanincreaseinthecombustiblegaslevelintheoil.INo.ThereplacementABBgeneratorstepuptransformersforphaseB"(2X101B)andphaseC(2X101C)arefunctionallycompatiblewith'heexistingMcGrawEdisontransformersintheirabilitytoproviderequiredvoltageandcurrenttothe500kVtransmissionnetwork.Theassociatedmodificationworkwillbeperformedtosupplementthetransformerreplacementsoasto.satisfyexistingcodesanddesignbases,andto'providethesatisfactoryoperationofauxiliaryequipment.Therefore,theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSARisnotincreasedassupportedbythestatementsabove.II'oTheproposedactiondoesnotaffecttheplantelectricalsystemthatprovides,normalandemergencyACpowertoreactorprotectionandengineeredsafetyfeatureequipment.Failureofthe2X101Band2X101Cgeneratorstepuptransformerunitswillnotpreventtheplantelectricalsystemfromperformingitsdesignsafetyfunctions..Thismodificationconstitutesreplacementofexistingequipment,andthereconfigurationofthe480VACpowerservicetothe2X101Afancoolingschemeandwillnotcauseadifferenttypeofaccidentscenariofromthosepreviously'evaluated.Consideringtheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.IIINo.TheproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifications(TechSpecs)particularly,TechSpecs3/4.8.1,3/4.8.2,and3/4.8.3.Themodificationdoesnotinterferewith.thelogic,control,oroperationofanysafetyrelatedplantpowersource,system,or'component.

95%28OC,IIiTheproposedmodificationwillreplacetheexistingContainmentInstrumentGas(CIG)AccumulatorReliefValve(PSV22645).Theexistingvalvewillbereplacedwithamorereliablevalvethatwillconformtotheoriginaldesignrequirements.5UlHhlhRY:No.ThismodificationdoesnotincreasetheprobabilityofoccurrenceoftheaccidentsdescribedintheFSARChapters6and15,becausethemodificationdoesnotaltertheoriginaldesignbasisfortheCIGSystemandallowsittobeoperatedasdescribedintheFSAR.TheaffectedportionoftheCIGSystemservesnosafetyfunctionandthemodificationmeetsallthedesignrequirementsspecifiedintheFSARTherefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.ThismodificationensurestheintegrityoftheCIGSystem.Theproposedactiondoesnotinvolveaprecursorof,orcontributorto,anyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewillbenoincrease,intheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.-ThismodificationreplacesexistingpressurereliefvalvePSV22645withavalvethatismorereliableandmaintainable..ThenewvalvewillnotalterthefunctionoftheCIGpipingnorwillitdegradetheoperationofCIGAccumlator2T215.ThismodificationsimplyallowstheCIGpipinginquestion.tofulfillItsoriginaldesignbasis.SincethismodificationdoesnotaltertheoriginaldesignbasisoftheCIGSystem,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III-No.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs).NoneoftheparametersthatarebasesfortheTechSpecsareadverselyimpactedbythismodification.Therefore,theproposedmodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95%29SCPj93-2102,Unit2ThepurposeofthismodificationistorestorethedesignbasisoftheUnit2'ReactorBuildingHVAC(DXRefrigerationUnits)byperformingasetpointchange.Thissetpointchangeinvolvesexpandingtherefrigerationcycleandoperatingatincreasedcycletemperaturesandpressures.INo.Increasingthesettingoftherefrigerantcompressor'highdischargepressurecutoffswitchesfrom270psigto279psigdoesnotaffecttheabilitytomaintainthepostDBAorAppendixRtemperaturelimit(s).Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentaspreviouslyevaluatedintheFSAR.ThesetpointchangewillactuallyincreasethepostaccidentreliabilityoftheDXunits.TheoverpressureprotectionfunctionofPSH-27202A/BisstillmaintainedwithsuitablemarginabovethecalculatedpostDBAmaximumoperatingpressureandbelowthesystemreliefvalve(PSV27203A/B)settings.Thereforethereisnoincreaseinthe.probabilityofa~malfunctionofequipmentimportanttosafety.IINo.IncreasingthesetpointofPSH-27202A/8from270psigto279psigdoesnotconflictwiththeothercompressortrip/alarmfunctionsandnodifferenttypesofaccidentsormalfunctions.arecreated.Therefore,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluated-previouslyintheFSAR.III'No.Unit2TechnicalSpecifications(TechSpecs)3/4.7andB3/4werereviewedfor.thissetpointchange.NeitherPSH-27202A/BnortheUnit2ESWGRALCrefrigerationunitsaredirectlyorindirectlyaddressedintheUnit2TechSpecs.Therefore,theproposedmodificationsetpointchangedoesnotreducethemarginofsafetyasdefinedinthedesignbasisforanyTechSpec.

95%30LThissafetyevaluationaddressestheoperabilityoftheUnit1BypassValve(BPV)¹1Fast-ActingSolenoidYalve(FASV).TheFASYsticksintheactuatedpositioncausingthe¹1BPVtoremainopenlongerthanexpected.ThesafetyevaluationshowsthatthesafeoperationofUnit1isnot.affectedbythissituation.Sllhih&E'o.ThefunctionoftheBypassValveistolimitreactorvesselpressuretransientstominimizechallengestotheMainSteamReliefValves(MSRVs).Thispressure-limitingfunctionisbasedontheopeningcharacteristicsoftheBPVs.TheseopeningcharacteristicsarenotaffectedbythepresentconditionoftheFASVforthe¹1BPV.Therefore,Thereisnqincreaseintheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyasaresultofthissituation.IINo.ThestickingoftheFASVforthe¹1BPVisnotexpectedtopreventtheclosingofthe¹1BPY,butifthisoccurs,thesituationisboundedbytheMainSteamLine(MSL)breakoutsideofcontainmenttransientanalysisinFSARSection15.6.4,orstuckopenMSRVtransient.AstuckopenbypassvalvesituationcaneventuallybeterminatedbyclosingtheMainSteamIsolationYalves(MSIVs).Plantsafetyis,boundedbyeitherofthesetransientanalyses.IIINo.Basedonthecurrentobservationofthe¹1BPY,SSES,andindustryexperience,itisreasonabletoconcludethatthe¹1BPVwillcontinuetooperateappropriately.ThemarginofsafetyofUnit1isnotcompromisedasaresultofthissituation.

95%31DCP-,IIIThepurposeofthismodificationistolowerthewaterlevelintheMoistureSeparator(MS)draintanksby10inches.ThiswillaccommodatethehigherleveltransientassociatedwiththePowerUprateandhelppreventaturbinetrip.No.Theproposedmodificationdoesnotincrease'theprobabilityofoccurrenceofanyaccidentevaluatedintheFSAR,includingFSARSections6and15.ThehardwarerelocationsprovidethesamefunctionsandmeetthesamedesignbasisfortheMSdraintanklevelinstrumentation.Potentialfailuremodesoftherelocatedleveltransmittershavenotchanged.TheactionwillreducetheprobabilityofturbinetripafterPowerUpratebyprovidingadditionalmarginbetweenoperatingMSdraintanklevelsandtheturbinetripsetpoint.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentsinceitisrelocatingandrecalibratingexistingequipmentwhileretainingthedesignbasesoftheoriginalsystem.Themodificationdoesnotincreasetheconsequencesofanaccidentsincethemodificationdoesnotaffectanysafetyfunctions.Themodificationwillnotaffecttheoffsitedosetothepublic.ThismodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentsincetheonlyequipmentmalfunctionthattheMSdraintanklevelcontrolsystemcouldinitiatewouldbelossofcontrol..Also,theloweringoftheMSdraintanklevelbyapproximately10incheshasnoadverseimpactontheoperationofthefeedwaterheaters.No.ThismodificationdoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedintheFSAR.Potentialfailuremodesoftherelocatedandrecalibratedequipmentarethesameasthoseattheexistinglocation.Ill"NoTheTechnicalSpecifications(TechSpecs)donotgovernthe'operationsoftheMSdraintanklevelinstruments.Therefore,thisproposedactiondoesnotaffectthemarginofsafetydefinedinthebasisforanyTechSpec.

9M32IDCP93-3059,Unit1Thepurposeofthismodificationistomodifythetwolower,condensingchambers(XY-B21-1D004AandXY-B21-1D004B)andthetwouppercondensingchambers(XY-B21-1D002andXY-14202)intheReactorPressureVessel(RPV).Theventmodificationforthetwolowercondensingchamberswillinstallamodifiedcondensingchamberandventpipingfromeachchambertotheassociatedoneinchvariablelegpiping(DCA-138)fromvesselnozzleN11A/B.Theventmodificationforthetwouppercondensingchamberswillinstallamodifiedcondensingchamber,ventpipingfromeachchambertothetwoinchvesselheadventpiping(DBA-112)fromvesselnozzleN7,andinsulationontheventpiping.Bothofthesemodificationswillallowaflowofsteamthrougheachrespectivechamberwhichwillpreventtheaccumulationofnon-condensableandaconcentrationbuild-upineachrespectivechamber.No.AdetailedreviewoftheFSARwasmadetodetermineiftheproposedmodificationhasaneffectonthepostulatedinitiatingeventsforwhichtransientsoranticipated'operationaloccurrencesandaccidentconditionswereanalyzed.TheproposedmodificationdoesnotincreasetheprobabilityofoccurrenceofanaccidentatSSES.Theprobabilityofoccurrenceofamalfunctionofequipmentisnotchangedbythisproposedmodification.Designconsiderationsensurethattheintegrityoftheventlineismaintainedduringallmodesofoperationandthatnoadverseeffectsonplantequipmentareintroduced.Nonewfailuremodesormechanismshavebeencreated.Thereliabilityofthelevelindicationsystemisactuallyenhanced,andwillensurethatreferencelegvolumeremainsunaffectedbynon-condensablegases.Theconsequencesofanaccidentarenotchangedbytheproposedmodification.Theadditionofanewcondensingchamberdesignandassociatedventpipingdoesnotaffectthesafetyfunctionsoftheexistingcomponents.Therewillbenochangeintheradiologicalconsequencesofthepipebreakaccidentsinsideoroutsidethedrywell.Also,therearenoincreasestothe10CFR100offsitedoses.Separation,redundancy,andabilitytowithstandsinglefailuredesignrequirementswillbemaintained.Consideringthisreview,theproposedmodificationwillnotincreasetheconsequencesofamalfunctionofequipment.IINo.Theproposedmodificationdoesnotcreatethepossibilityforanaccidentofadifferenttype,nordoesitcreatethepossibilityofamalfunctionofadifferenttype.TheproposedmodificationinstallspassivecomponentswhosemalfunctionisenvelopedbypipebreakanalysispreviouslyevaluatedintheFSAR.IIINo.TheproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.3.TechSpec3/4.3requiresthatRPVinstrumentationbeoperableinallplantoperatingmodes.Thisrequirementisinplacetoensurethatthereisadequatecorecooling,sufficientcoolinginventory,andthattheplantoperatingrequirementsaremaintained.

i 95-033Thepurposeofthismodificationistomodifythetwolowercondensingchambers(XY-B21-2D004AandXY-B21-2D004B)andthetwouppercondensingchambers(XY-821-2D002andXY-24202)intheReactorPressureVessel(RPV).Theventmodificationforthetwolowercondensingchamberswillinstallamodifiedcondensingchamberandventpipingfromeachchamberto.theassociatedoneinchvariablelegpiping(DCA-238)fromvesselnozzleN11A/B.Theventmodificationforthetwouppercondensingchamberswillinstallamodifiedcondensingchamber,ventpipingfromeachchambertothetwoinchvesselheadventpiping(DBA-212)fromvesselnozzleN7,andinsulationontheventpiping.Bothofthesemodificationswillallowaflowofsteamthrougheachrespectivechamberwhichwill.preventtheaccumulationofnonwondensableandaconcentrationbuild-upineachrespectivechamber.No.AdetailedreviewoftheFSARwasmadetodetermineiftheproposedmodificationhasaneffect'onthepostulatedinitiatingeventsforwhichtransientsoranticipated.operationaloccurrencesandaccidentconditionswereanalyzed.TheproposedmodificationdoesnotincreasetheprobabilityofoccurrenceofanaccidentatSSES.Theprobabilityofoccurrenceofamalfunctionofequipmentisnotchangedbythisproposedmodification,Designconsiderationsensurethattheintegrityoftheventlineismaintainedduringallmodesofoperationandthatnoadverseeffectsonplantequipmentareintroduced.Nonewfailuremodes.ormechanismshavebeencreated.Thereliabilityofthelevelindicationsystemisactuallyenhanced,.andwillensurethatreferencelegvolumeremainsunaffectedbynonwondensablegases.The'onsequencesofanaccidentare'notchangedbytheproposedmodification.Theadditionofanewcondensingchamberde'signandassociatedventpipingdoesnotaffectthesafetyfunctionsoftheexistingcomponents.Therewillbenochangeintheradiologicalconsequencesofthepipebreakaccidentsinsideoroutsidethedrywell.Also,therearenoincreasestothe10CFR100offsitedoses.Separation,redundancy,andabilitytowithstand'singlefailure.designrequirementswillbemaintained.Consideringthisreview,theproposedmodificationwillnotincreasetheconsequencesofamalfunctionofequipment.IINo.Theproposedmodificationdoesnotcreatethepossibilityforanaccidentofadifferenttype,nordoesitcreatethepossibilityofamalfunctionofadifferenttype.TheproposedmodificationinstallspassivecomponentswhosemalfunctionisenvelopedbypipebreakanalysispreviouslyevaluatedintheFSAR.IIINo.TheproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.3.TechSpec3/4.3requiresthatRPVinstrumentationbeoperableinallplantoperatingmodes.Thisrequirementisinplacetoensuiethatthereisadequatecorecooling,sufficientcoolinginventory,andthattheplantoperatingrequirementsaremaintained.Theproposedmodificationensuresthatthisrequirementisfulfilled.

95434Thepurposeofthischangeistoaddmulti-pinquickdisconnectconnectors(QDC)attheinterface,ofthefieldcablesandracewaysystemwiththevalveoperatorlimitswitchcompartment.TheseconnectorsaretofacilitatetheremovaloftheentiremotoractuatorfromthevalveduringmaintenanceandVOTEStesting.Inaddition,single-pinquickdisconnectconnectorsareaddedtoeachphaseofthepowerleadsofthemotorinsidethelimitswitchcompartment.Theseconnectorswillpermitseparateremovalofthemotorfromtheactuator.No.No.Theadditionofthequickdisconnectconnectorsdoesrepresentanincreaseinprobabilityofanintentionaltripofthereactorrecirculationpumpmotor.,However,basedonthehighreliabilityoftheconnectoranditsabilitytomeettherequiredminimumsafetyfunction,theincreaseinprobabilityisconsideredtobesosmall'orinsignificantthatthechangeinprobabilityisnegligible.Also,thedisconnectingofthespaceheatersinnowayaffectsaccidentinitiators.Thus,theproposedactiondoesnotincreasetheprobabilityofoccurrenceofanaccident.Thedisconnectionofthespaceheatersincreasestheprobabilityofcondensation.Also,thespaceheaterswered~nergizedduringtheenvironmentalandseismicqualifications.SSESandindustryexperiencehaveshownthatspaceheatershavecausedinternaldamage.Therefore,themodificationreducestheprobabilityoftheoccurrenceofamalfunctionofequipment.Theprobabilityofanincreaseintheconsequencesofanaccidentisnotaffectedbytheproposedaction.Thesafetyfunctionofallofthevalvesisnotchangedbytheadditionofthemulti-pinandsingle-pinquickdisconnectconnectors,norbydisconnectionofthespaceheaters.Also,the.proposedmodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentofmalfunctionequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.Chapter6and15oftheFSAR,werereviewedforthisparticularsafetyevaluation.Thereviewdidnotidentifyapostulatedinitiatingeventwhichwouldcreatethepossibilityforanaccidentofadifferenttype.Themulti-pinand'singl~inquickdisconnectconnectorsareseismicallyandenvironmentallyqualifiedtothevalvemotoractuatorseismicandenvironmentalconditionssothattheconnectorsdonotcreateanypotentialforacommonmodefailure.Thus,thepossibilityofamalfunctionofthevalveofadifferenttypeisnotcreated.IIINo.TheoperabilityoftheprimarycontainmentisolationvalvesHV-21343,HV;21346,HV-22603,HV-241F016,HY-244F001,andHV-249F007aregovernedbyTechnicalSpecification(TechSpec)3I4.6.3.TheproposedactiondoesnotaffecttheoperabilityrequirementsormaximumisolationtimesofSection3(4.6.3.Thus,themarginofsafetydefinedintheTechSpecforthecontainmentisolationvalvesisnotaffected.TechSpec3.8.4.2.1requiresthermaloverloadprotectionbecontinuouslybypassedfortheprimarycontainmentisolationvalveslistedabove.TheproposedactiondoesnotaffecttheoperabilityrequirementsofthethermaloverloadprotectioninSection3.8.4.2.1.Therefore,theproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%35DC-*iliDCP93-9071B,Unit2Thepurposeofthismodificationistoinstalladditionalcaskpitdrainagepreventionbarrierstothosewhichalreadyexist.Thiswillprovideadditionalassurancethatinadvertentcaskpitdraindowneventscannotoccurwhenthecaskstoragepitgatesareremoved.No.ThismodificationdoesnotincreasetheprobabilityofoccurrenceoftheaccidentsdescribedinFSARChapters6and15northeLossofFuelPoolCoolingEventdescribedinFSARAppendix9becausethemodificationmeetstheoriginaldesignbasisoftheSpentFuelStorageandCoolingSystemsandactuallydecreasestheprobabilityofapoolinventoryloss.ThemodificationdoesnotaffectanyequipmentimportanttosafetyanditmeetsallofthedesignrequirementsspecifiedintheFSAR.Also,asstatedabove,themodificationmeetsthedesignbasisspecifiedintheFSAR.Th'erefore,themodificationdoesnotincreasetheprobability'ofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Thecomponentsaffectedbythismodificationcomplywiththeoriginalconstructioncodes.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR..IINo.ThismodificationwillnotalterthedesignbasisoftheSpentFuelCaskStoragePitthatispartoftheSpentFuelStorageorCoolingSystemsandwillcomplywiththeoriginalconstructioncodes.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.ill..No.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTeclinicalSpecification(TechSpec),especiallyTechSpecSection3/4.9.9.NoneoftheparametersthatarethebasisfortheTechSpecwillbeadverselyimpactedbythismodification.

95%36DCThepurposeofthismodificationistoreplacethefourexistingITTBartonSuppressionPoolLeveltransmitterswithRosemounttransmitters.Thiswill'enhancethetransmitterreliability.No.ThismodificationdoesnotincreasetheprobabiligofoccurrenceoftheaccidentsdescribedintheFSARChapters6and15.'hefourleveltransmitterswillbe~operatedwithintheirdesignbasisandmeetorexceedtheseismicandenvironmentalqualifications.Theprobabilityofamalfunctionofthenewtransmittersisnotanygreaterthanwiththeoriginal.Also,thismodificationwillnotadverselyaffectanystructure,system,orcomponentfromperformingitssafetyfunction,andnocommonmodefailuresoradverseeffectstoanyequipmentorcircuitsarepossible.Therefore,theprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSARisnotincreased.IINo.ThereplacementoftheITTBartonleveltransmitterswiththefullyequivalentandqualifiedRosemounttransmitters,willnotincreasedosetothepublicabovetheLicensingLimit.Thereisnoeffectontheaccidentsthathaveradiologicalconsequencesasaresultofthismodification.Also,noadditionalornewradiologicalconsequencescanoccur.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Accidentscenariosormalfunctionsofadifferenttypecannotresultbecausenounanalyzedornewadverseequipmentorcircuiteffectsarepossible.Installationoftheseismicandenvironmentallyqualifiedreplacementtransmitterswillnotdegradethecircuitfromperformingitsdesignbasisoperation,Therefore,thisproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanevaluatedintheFSAR.IIINo.TheleveltransmitterreplacementsproposedinthismodificationareTechnicalSpecification(TechSpec)relateditemsandareaddressedinTechSpecs.3.3.7.5,3.5.3,and3.6.2.1.Theproposedmodificationdoesnotadverselyaffectthelogic,control,oroperationofanyTechSpecrelatedsystem.ThemodelRosemounttransmitterisaqualifiedinstrumentforthisapplication.NoneoftheparametersthatarethebasesfortheTechSpecswillbeimpacted.Therefore,themodificationdoesnotreducethemarginsofsafetyasdefinedinthebasisforanyTechSpecs.

95%3TTheproposedmodificationinvolvesaflushofradioactiveresidueexistingwithintheRecirctotheReactorWaterCleanup(RWCU),thevesselbottomheaddrainline,andtheRicircdischargevalvedrainlines.BythrottlingthevalvesassociatedwiththesedrainlinesandhavingHealthPhysicspersonnelmonitordoserates,thiswillensurethatexcessivelyhighdoseratesinthisareawillbelowered.No.TheFSARconcernsitselfwithanysituationthatviolatestheintegrityofthevessel.Thisprocedure'hrottlestwoinchdeadlegdrainlinesinthecaseoftheRWCUsuctiondrainandvesselbottomheaddrainlinesandoneinchlinesinthecaseoftherecircdischargevalvedrainlinestoflushthehotspotresidueintothedrywellsumps/drywellequipmentdraintank(DWEDT)orsuppressionpooldowncomer.ThepotentialforlargewaterinventorylossesfromtheReactorPressureVessel(RPV)isminimalbecause;1)Vessellevelanddrywellsump/DWEDTlevelswillbemonitoredwhilethevalvesareopen,2)Theisolationcapabilityisnotimpairedsincetheoperatorcanclosetheisolationdrainifnecessary,and3)Theflushesareofashortduration(approximatelythirtyseconds)andusevessel'waterheadasthedriving,force.Inaddition,theprocedurehasaprerequisitesteptoensurethatalladministrativecontrolsarecompletedforOperationswithPotentialforDrainingtheReactorVessel(OPDRV)inaccordancewithOP-AD-326(OperationsWithPotentialforDrainingReactorVessel/Cavity).Therefore,basedontheabovediscussion,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.Thisprocedureinvolvesoperatingequipmentinitsdesignatedmodeofoperation..WhilethreeofthefiveflushesaretechnicallyclassifiedasOPDRV's,thenecessaryprecautionsaretakentopreventdrainingthevessel.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo,'heproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),particularlysections3.6.5.3(StandbyGasTreatmentSystem-SGTB),3.6.5.1(SecondaryContainmentisolationDampers),and3.5.3(SuppressionChamber).

95%38ThismodificationwillinstallpermanentventilationsealsandLocalLeakageRateTest(LLRT)ventlineatthereactorheadpipingpenetrationsintheUnit2refuelingsealplate.ThismodificationwillprovideaninterimbarrieruntilthedomecoversareinstalledbetweenZonesllandlll.Also,thismodificationwillpermittheremovalofthedrywellairlockinterlocksandallowperson'alaccesspriortotheremovalofthereactorheadpiping.No.Thepresenceofaleakageliquidaccumulationreservoirintheupperdrywellisnotasafetyconcernforleaksthatarepossibleinanysignificantquantityfromthereactorcoolantpressureboundary.TheadditionofthepermanentventilationsealsandLLRTventlineatthereactorheadpipingpenetra'tionsinthemrefuelingsealplatewillnotincreasetheprobabilityoftheleakage.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccident.Theproposedpermanentventilationseal'sdesignrequirementsareenvelopedbydesignparametersofpenetrationsealspresentlyusedatSSES.Thesepenetrationsealshaveproventobehighlyreliable.Therefore,theadditionofthepermanentventilationsealswillnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment.TheadditionofthepermanentventilationsealsandLLRTventlineatthereactorheadpipingpenetrationsintherefuelingsealplatewillnotincreasethepresenceofsteamintheupperdrywell.Thematerialsthatcomprisethepermanentventilationsealsassurethatthesealdoesnotdeteriorateandbecomedislodgediftheradiationexposurelimitsofthe'sealareexceededduringanaccident.Therefore,theconsequencesofanaccidentarenotincreasedduetotheproposedaction.Theprobabilityofanincreaseintheconsequencesofamalfunctionofequipmentisnotaffectedbytheproposedaction.Thismodificationdoesnotaffectthefailuremodesofan'yequipment.II.No.Section5.2.5(5.2.5:1.2.4.1)oftheFSAR,Chapters6and15oftheFSAR,theDesignAssessmentReport,andNUREGC776werereviewedtodetermineiftheproposedactionhadthepotentialforcreatingapostulatedinitiatingeventwhichwasnotwithinthespectrumofeventsanticipated.Thereviewdidnotidentifyanypostulatedinitiatingeventthatwouldcreatethepossibilityforanaccidentormalfunctionofadifferenttype.illNo.TherequirementsfortheintegrityoftheSecondaryContainmentareaddressedbyTechnicalSpecification(TechSpec)3/4.6.5.Byaddingthepermanentventilationsealstotherefuelingsealplatenosignificantadditionalleakage'atthereactorheadpipingpenetrationswilloccurduringthereactorheadpipingremovalanddomecoverinstallation.Therefore,themodificationensuresthatthemarginofsafetyasdefinedinthebasisforanyTechSpecisnotreduced.

95%39Thismodificationwillremovethe3/4'entlineoneachofthe(8):6"overflowlinesforthe(6)Collection,(4)Surge,and(6)SampleTanks,andinstalla2"openventlineontopofeachoverflowline.Thiswillprovidethenecessarysiphonbreakingactiontopreventasiphoningeffectthroughtheoverflowandconsequentlypreventanyexcessivelossoftankinventoryifatankisoverflowed.No.ThismodificationdoepnotalterthedesignbasisoroperationasdescribedwithinFSARSection11.2.1,LiquidWasteManagementSystems(LWMS).Themodificationscreatenochangetosystemoperationorfunction.Theywill,however,enhancethepipingsystem'sperformanceandtheinstrumentationre-spanningwillenhanceLiquidRadioactiveWaste(LWR)processingby'enablingutilizationofadditionaltankinventoriesmadeavailablebytheprevioustankoverflowpipingenhancement.TheLWMSitselfhasnodirectnuclearsafetyrelatedfunctionasadesignbasis.Safetysystemsdoemptyradioactivewastewaterintothe'LWMSasdesigned.However,sincethechangesmadetotheLWMSdonotalterthesystemoperationasdiscussedabove,nosafetyrelatedfunctionofanysystemassociatedwiththeLWMSwillbeaffected.Allmodificationstothepiping,willbeperformedinfullcompliancewiththeoriginalconstructioncodesand'heprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionisalreadyboundedwithintheonginalcalculationsanddesignbases.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedin'heFSAR.IINo..ImplementationofthismodificationwillnotchangethenormaloperationoftheLWMS,specificallytheLiquidRadwasteProcessingSubsystem.Thesystemwillcontinuetooperateinaccordancewithitsoriginaldesignbases,andthepipingmodificationscomplywiththeoriginalconstructioncodesandregulations.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Thismodificationdoesnotreducethemarginofsafetyasdefinedinthebasis'foranyTechnicalSpecification(TechSpec),particularlyTechSpecs3/4.11.1.1,3/4.11.1.2,and'3/4.11.1.3.Themodificationdoesnotaffecttheconcentrationofradioactivematerialsreleasedintheliquidradwasteeffluents(TechSpec3/4.11.1.1),northedosesoftheradioactivematerialinthoseeffluents(TechSpec3/3.11.1.2),northeoperability/availabilityoftheLRWProcessingSubsystem(TechSpec3/411.1.3) 9M40D*TheproposedmodificationinstallsaHydran201RGasMonitoringSystemontheUnit2MainTransformers.Thismodificationwillallowforthecontinuousmonitoringofthetransformerstohelpdetectincipientfailureconditionsandmonitorfaultgasesdissolvedinthetransformerdielectricoil.No.ThismodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesoftheaccidentsdescribedinFSARChapters6and15sincethereisnoadverseimpactonanyplantequipmentasaresultoftheproposedaction.TheGasMonitoringSystemhasnodirectorindirectconnectiontoorinfluenceuponanyplantsafetyequipmentanditdoesnotadverselyaffectthefunctionoroperationofthetransformer.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofthemalfunctionofequipmentrelatedtosafety,aspreviously'valuatedintheFSAR.No.Theproposedmodificationwillnotalteroraffectthedesignbasis.Evencompletefailureofthe2X101A,B,andCgeneratorstep-uptransformerunitswillnotpreventtheplantClass1Eelectricalsystemfromperformingitsdesignsafetyfunctions.Consideringtheabove,thismodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo.ThismodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSp'ec)<particularly,TechSpecs3/4.8.3.1apd3/4.8.3.2.TheGasMonitoringinstrumentation'snotrequiredfor,andhasnoaffectupon,operationorshutdownoftheunitorformitigationoftheconsequencesofanaccident.I 95%41OCP..UiiCThemodificationwillreplacetheexistingBarksdalemodelODPD2T-M18SS-L6-B5flowswitch,withaBarksdaleDPD2T-M3SS-L6-B5flowswitch.Thenewswitchprovidesaflowswitchwithaloweradjustablerange.ThiswillpreventdriftsintheflowswitchandtherebypreventspurioustripsoftheRadwasteWaterChillers.No.TheRadwasteBuildingChilledWaterSystemhasnosafetyrelatedfunction.ThismodificationdoesnotcreateanynewfailuremodesoranyadverseeffectstotheRadwasteBuildingChilledWaterSystem.Therefore,basedonareviewofFSARChapters6and15,thismodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofe'quipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.EachflowswitchbeingreplacedisineitherloopAorBoftheChilledWaterSystem.Eachloopisredundant.Theflowswitchfailurewouldeithernottripthepumpiftheflowwoulddecreasebelowthesetpointandpossiblycausepumpfailure,orspuriouslyactuateandtripthepumpwhenflowispresent.Thesinglefailurewouldonlyaffectoneloopofthesystem.ThisfailureisnotadifferenttypethanisevaluatedintheFSARnordoesitcreatethepossibilityofanydifferenttypeofaccidentormalfunctionthanevaluatedinChapters6and15.IIINo.TherearenoTechnicalSpecification(TechSpec)limitingconditionsforoperationorsurveillancerequirementsrelatingto,oraffectedbytheRadwasteBuildingHeating,Ventilation,andAirConditioning(HVAC)systemambienttemperature.Therefore,themodificationdoesnotaffectorreduceanymarginofsafetyforanyTechSpec.'

95%42,Ud.CThismodificationinvolvesasetpointchangepackagethatchangestheMotorOperatedValve(MOV)allowabletorqueswitchsettingrangeaslistedontheMOVDataDetailDrawing.ChangingthetorqueswitchsettingwillassurethattheMOViswithintheallowablethrustrange,functionsproperly,andisnotdamaged.No.Theonlyequipmentaffectedbythismodificationisthemotoroperatedvalveassemblyitself.Thevalve'sfunctionwithinthesystemdoesnotchange.Valvestroketimeremainsunaffectedandstillconformstostroketimerequirements.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.Themodificationdoesnotadverselyaffectvalvedynamicqualification.Therefore,themodificationdoesnotimpactthedynamicqualificationoftheMOVasdiscussedintheFSAR.No.Consideringthediscussionabove,itisconcludedthattheproposedactiondoesnotcreatethepossibilityofanaccidentormalfunctionofa'differenttypethanpreviouslyevaluatedintheFSAR.IIINo..ThemodificationdoesnotaffectMOVstroketimerequirements.Alsothevalvedesignbasisfunctionismaintainedandthemodificationhasnoeffectonsystemoperation.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifications.95-043scj-,uiiThemodificationwillrevisethetwosetpointsfortheRodWorthMinimizer(RWM)SteamFlowInterlockandAlarmflowswitch,FSL-C32-2K608,accordingtoGeneralElectricReport,GE-NE-901%264592.RecalculatingthetwosetpointsforFSL-C32-2K608willcoincidewiththePowerUprate.8/hlhSRY:INo.IncreasingtheLowerPowerSetpoint(LPSP)andLowPowerAlarmPoint(LPAP)ofFSL&32-2K608,andtheRWMSteamFlowInterlockandAlarmdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccidentorbeusedpriortoanaccident.Therefore,itdoesnotincreasetheprobabilityofoccurrenceofanaccidentaspreviouslyevaluatedintheFSAR.Thismodificationdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccidentorwhichwouldbeusedpriortoanaccident'.TheRWMandSteamFlowTotalingsystemsarenotrequiredtomitigateanaccident.Therefore,theproposed'actiondoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentortheconsequencesofamalfunctionofequipmentaspreviouslyevaluatedintheFSAR.IINo.IIINo.Thismodificationdoesnotchangethefunctionorperformanceoftheinstrumentandthissystemisnotusedinanaccident.Further,theincreasesofthesetpointsremainwithintheacceptableoperatingrangeoftheswitch.Therefore,itdoesnotcreatethepossibilityofanaccidentofadifferenttype.orthepossibilityformalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.,PlantTechnicalSpecification(TechSpec)Sections3.1.4.1and4.1.4.1state'hattheRWMmustbeoperableinoperationalconditions1and2whenthermalpowerislessthanorequalto20%ofratedthermalpower.Theminimumallowablelowpowersetpointis20%ofrated'hermalpower.SincethenewsetpointisincompliancewiththeTechSpecs,theproposedactionwillnotreducethemarginofsafetyasdefinedinthebasisofanyTechSpec.

95%44ThemodificationwillrevisethetwosetpointsfortheReactorManualControlRodPowerAlarmUnit(P~12-2N654A)andtheAlarmFirstStageTurbinePressureAlarmUnit(PS-C12-2N654B)accordingtoGeneralElectricReport,GE-NE-901%2&6592.,RecalculatingthesetpointsforPS-C12-2N654AandPK12-2N654BwillcoincidewiththePowerUprate.INo.TherevisedsetpointsprovideadequatemargintotheallowablevaluesforPowerUprateconditions.Thissetpointchangedoesnotchangethefunctionorperformanceoftherodsequencecontrolsystemoranyequipmentorcomponentsassociatedwiththesedevices:.Inaddition,thesedevicesarenotrequiredtomitigateanyaccidents.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipment,aspreviouslyevaluatedintheFSAR.No.ChangingtheprocesssetpointofP&C12-2N654AandPS-C12-2N654B,ReactorManualControlSystem(RMCS)PowerandAlarmFirstStageTurbinePressureinterlocksdoesnotchangethefunctionorperformanceoftheinstruments.Thissystemisnotusedinanaccident.Therefore,itdoesnotcreatethepossibilityofanaccidentofadifferenttypethanpreviouslyevaluatedintheFSAR,nordoesitcreateapossibilityformalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.No.PlantTechnicalSpecification(TechSpec)Sections3.1.4.2and4.1.4.2statethat.theRodSequenceControlSystem(RSCS)mustbeoperableinoperationalconditions1.and2whenthermalpowerislessthanor:equalto20%ofratedpower.Theminimumallowablelowpowersetpointisgreaterthan20%ofratedthermalpower.'incethenewsetpointisincompliancewiththeTechSpec,theproposedactionwillnotreducethemarginofsafetyasdefinedinthebasisoftheTechSpec.

95445ThemodificationwillinstallaventilatingfanintheceilingoftheEDieselGeneratorEngineControlPanelOC521Eandafilter/grillinthedoorofthecontrolpanel.ThismodificationwilleliminatetheprematurefailuresofAgastatrelaysandfiberopticboardsduetooverheatinginthesummermonths.Khit6h,lE:No.TheproposedmodificationdoesnotadverselyaffecttheEDieselEnginecontrolpanel.Sincetheventilationsystemwillgreatlyimprovethecoolinginsidethispanel,thismodificationwillprovideforincreaseddependabilityregardingelectricalcomponentsand,therefore,increasedcomponentreliability.Therefore,thismodificationdoesnotincreasetheprobabilityofanaccidentpreviouslyevaluatedintheFSAR.Themodificationmeetstheseismicrequirementsofthispanel.ThefailureofthefantoperformproperlywouldnotpreventtheEngineControlPanel.componentsfromperforrriingtheirdesignsafetyfunctions.Therefore,therewillbenoincreaseintheprobabilityofoccurrence'ofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.TheadditionoftheventilationfanandassociatedequipmenttocooltheinsideofpanelOC512E,willnotincreasedosetothepublicabovethelicensinglimit.There.,couldbenoeffectpossibleontheaccidentsthathaveradiologicalconsequencesasaresult'ofthismodification.Also,nonewradiologicalconsequencescanoccur.Therefore,therewillbenoincreaseintheconsequencesof.anaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Nonewaccidentscenariosormalfunctionsofadifferenttypecanresultbecausenoneworunanalyzedadverseequipmentorcircuiteffectsarepossible.Installationoftheseismicallysupportedfanandassociatedequipmentandevencompletefailureofthenewcoolingapparatuswillnotdegradethecontrolpanelfromperformingitsdesignbasisoperation.Therefore,thismodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanevaluatedintheFSAR.IIINo.TheEDieselGeneratorisaddressedinTechnicalSpecification(TechSpec)3/4.8,ElectricalPowerSystems.Theproposedmodificationdoesnotadverselyaffectthelogic,control,oroperationofanyTechSpecrelateditem.TheventilationsystemproposedisqualifiedforthisapplicationandiscurrentlyusedinpanelOC519E.NoneoftheparametersthatarethebasesfortheTechSpecswillbeimpacted.Therefore,thismodificationdoesnotreducethemarginsofsafetyasdefinedinthebasisforanyTechSpecs.

95446DCP-0.U'hemodificationwillremovetherestrictionspresentlyintheprocesscomputerformodeswitchmonitoring.ThiswillallowthebulktemperatureoftheSuppressionPooltoremainvalidregardlessofthemodeswitchpositionaslongasallotherchecksforvalidResistanceTemperatureDetector(RTD)temperaturesaremet.INo.Themodificationdoeqnotaffectanyautomaticinitiationsorfunctions.ItallowsOperationstousetheSuppressionPoolMonitoring(SPM)calculatedtemperatureirrespectiveofModeSwitchPositionandforanyplantcondition.SuppressionPoolTemperatureMonitoringSystem(SPOTMOS)temperaturedataandalarmfunctionsarenotaffected.PerformingarealisticcalculationofbulkSuppressionPooltemperaturewhilestillretainingasubstantialdegreeofconservatismdoesnotaffectorinvalidatetheresultsofanyanalysisperformedintheFSAR.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionpreviouslyevaluatedintheFSAR.IINo.ThischangeonlyaffectsthecalculationofbulkSuppressionPooltemperaturebySPM.Itdoesnotaffectanyautomaticinitiationsorfunctions,Therefore,itdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.TheSuppressionPooltemperaturelimitsarecontainedinTechnicalSpecificationd(TechSpec)Section3.6.2.ThecalculationmethodemployedbySPMhasbeeaseenemonstratedtogiveaconservativeestimateofbulkSuppressionPooltemperature.RemovalofModeSwitchpositionfromthedeterminationofvalidbulkSuppressionPooltemperatureallowscontinueduseofthiscalculatedbulkSuppressionPooltemperature.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%47Themodificationwillreconfigurethe1/2CO>dischargepipingtothe'Unit1UninterruptiblePowerSupply(UPS)RoomsupplydamperFPD-3P-12-4-4oftheControlStructure.ThiswillpermitthedampertocloseuponamanualorautomaticactuationoftheCO>floodingsystemintheUPSRoomandtoreestablishtheCO>systeminaccordancewithitspipingandinstrumentdesigndrawing.No.TheFireProtectionReviewReport(FPRR)hasbeenreviewedinrelationtothismodification.ThesafeshutdownoftheplantwillnotbejeopardizedbyafireineithertheUPSRoomortheLowerRelayRoom.FSARChapter15wasalsoreviewedandtherewasnoreferencetoanyaccidentscenariosthatcouldbeimpactedbytheactionstakenbythismodification.ConsideringtheaboveandthatthereworkedCO>fireprotectionpipingwillmeettheguidelines.ofitsoriginaldesignbasis,'hemodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Themodificationwillallowfo'rtheproperfunctioningoffiredamperFPD-3P-12MandimprovetheoverallreliabilityoftheCO>FireProtectionSystemtosuppressandextinguish.firesintheUnit1UPSRoomoftheControlStructure.Therefore,themodificationwillnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR..TheproposedchangeswillproperlyconfiguretheCOqdischargepipingtodamperFPD-3P-12Mandwillnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewill'benoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.ThismodificationwillmeetallthedesignbasiscriteriaasspecifiedintheFSARforCO<FireProtectionSystems.Also,thedesignbasisfunctionfortheUPSRoomsupplydamperFPD-3P-12~willbeensuredasaresultofthismodification.Consideringtheabove,the.actionstakenbythismodificationwillnotcreatea'ossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IllNo.TheUnit1TechnicalSpecification(TechSpec)whichisapplicabletothissystemwithrespecttothismodificationisdescribedinTechSpecSection3/4.7.6.3.ThereworkoftheCO<FireProtectionpipingforfiredamperFPD-3P-12-4-4willbeinaccordancewiththeapplicabledesigncriteriaspecifiedintheFSAR.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%48DC1Themodificationwillinstallthreenew6manualgatevalvestothe6"GBD-215condensatepiping.Thesenewgatevalveswillprovideanalternatemeansofisolatingthe6"filllinesleadingtothedraincoolersandfeedwaterheaterstringsA,B,8C.Thenewgatevalveswillalsoallowmaintenancepersonneltoisolatethepipingformaintenance.TheycouldalsobeutilizedasanalternatetotheexistingHV-20659A,B,LCvalvesforequalizationofpressurearoundthelarge20"gatevalvesHV-20639A,B,6Ctoassistinreopeningthemfollowingisolationofthecondensatepipingtothedraincoolersandfeedwaterheaterstrings.INo.ThismodificationwilladdnewmanualgatevalvesasbackupstotheexistingmotoroperatedglobevalvesHV-20659A,B,8C.Thenewgate'alveswillnormallybeopenandhaveanegligibleimpactontheflowcharacteristicsinthe6"GBD-215condensatefilllinesforfeedwaterheaterstringsA,B,5C.Thismodificationwillhavenoadverseaffectson'theoperationorfunctionoftheCondensateSystemasdefinedintheFSAR.Consideringtheabove,themodificationwillnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentpreviouslyevaluatedintheFSAR.Themodificationwillnotadverselyaffectthefunctionorperformanceofthe6"GBD-215condensatepiping.Therefore,the.modificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Theproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluated.intheFSAR.No.Thefunctionandperformanceofthe6"GBD-215condensatepipingsystemwillbeenhancedbytheadditionofthesemanualgate'alves,becauseanadditionalmethodwillbeavailableforisolatingthefilllinetothefeedwaterheaterstringsiftheHV-20659A,B,8Cvalvesfailorleak-by.Consideringtheabove,theproposedactionsdonotcreateapossibilityfor'anaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.Thepipingandcomponentsaffectedbytheactionstakenby'hismodificationarenotspecificallyaddressedinthebasisforanyUnit2TechnicalSpecification(TechSpec).Therefore,themodificationdoesnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95-049Thismodificationwillremovethefourabandoned2"pipesfromthepenetrationX-30-6-9andre-sealthepenetrationusingapprovedSSESprocedures.Removalofthesepipesisrecommendedtopreventpotentialdeteriorationofthepenetrationseal.lNo.ThemodificationcomplieswiththeoriginaldesignbasisoftheControlStructureandReactorBuildingandtheoriginaldesignrequirementsforpenetrationX-30-6-9.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceofanyaccidentsdescribedintheFSAR.Themodificationwillpreventthedegradationofthepenetration.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Thepenetrationaffectedbythismodificationwillcomplywiththeoriginaldesignrequirements,anddegradationofthesealpenetrationwillbeprevented.Therefore,'hismodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.ThismodificationwillnotalterthedesignbasisoftheControlStructureortheReactorBuildingandwillcomplywiththeoriginaldesignrequirements.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.aThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheControlStructure,ReactorBuilding,oranyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs),especiallyTechSpecsSections3/4.6.5and3/4.7.7.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95%50DC9Themodificationwillredesigntheinterfacebetweenthetopoftheloadcellontherefuelingbridgemainhoist2H201beam.Thiswillpreventprematurewearofthepartsandassureproperloadingalignment.No.Themodificationwillnotchan'getheoriginaldesignfunctionoftheload'cell.Itwillredesigntheinterfacebetweentheloadcellandtherefuelingbridgemainhoistframetoprovideamorereliableloadingalignmentresultinginaconsistentloadmonitoringby.theloadcell.Allautomatichoisttripsremainunchanged.ConsideringtheaboveandareviewofFSARChapter15,theactionstakenbythismodificationwillnotincreasetheprobabilityofoccurrenceofan'accidentpreviouslyevaluatedintheFSAR.Therefuelingbridgemainhoistanditssubcomponents,suchastheinterfacemechanism,donotserveanysafety-relatedfunctions.ThemodificationwillalsoconformtoallofthedesignrequirementsspecifiedintheFSAR.Sincethismodificationdoesnotadverselyaffecttheperformanceofthebridgenoranyotherassociatedequipment,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Themodificationdoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoff-sitedose.Therefore,therewill"benoincreaseintheconsequencesofanaccidentor'malfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.flNo.ThismodificationwillmeetallthedesignbasiscriteriaasspecifiedintheFSAR.Thefunctionandperformanceoftherefuelbridgemainhoistwillbeenhancedbytheredesign,oftheloadcellinterface.Consideringtheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Unit2TechnicalSpecification(TechSpec)3/4.9.6providessurveillancerequirementsfortherefuelingbridge/platformtodemonstratethatitisoperablepriortoitsuse.Theproposedmodificationenhancesthemonitoringcapabilityoftheloadcellwhichwillbeprovenbytestingpriortohoistuse.Consideringtheabove,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%51C>>,U'hemodificationwillredesigntheinterfacebetweenthetopoftheloadcellontherefuelingbridgemainhoist1H201beam.Thiswillprevent-prematurewearofthepartsandassureproperloadingalignment.No.Themodificationwillnotchangetheoriginal'designfunctionoftheloadcell.Itwillredesigntheinterfacebetweentheloadcellandtherefuelingbridgemainhoistframetoprovideamorereliableloadingalignmentresultinginaconsistentloadmonitoringby'heloadcell.Allautomatichoisttripsremainunchanged.ConsideringtheaboveandareviewofFSARChapter15,theactionstakenbythismodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Therefuelingbridgemainhoistanditssub'omponents,suchastheinterfacemechanism,donotserveanysafety-relatedfunctions.ThemodificationwillalsoconformtoallofthedesignrequirementsspecifiedintheFSAR.Sincethismodificationdoesnotadverselyaffecttheperformanceofthebridgenoranyotherassociatedequipment,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Themodificationdoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoff-sitedose..Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No,Thismodificationwillmeetallthedesignbasiscriteriaasspecifiedinthe.FSAR.'hefunctionandperformanceoftherefuelbridgemainhoistwillbeenhancedbytheredesignoftheloadcellinterface.Consideringtheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentor'alfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Unit1TechnicalSpecification(TechSpec)3/4.9.6providessurveillancerequirementsfortherefuelingbridge/platformtodemonstratethatitisoperablepriortoitsuse.Thepro'posedmodificationenhancesthemonitoringcapabilityoftheloadcellwhichwillbeprovenbytestingpriortohoistuse.Consideringtheabove,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-052ThesemodificationsrequiresthattheflowtransmittersandpressuretransmitterswithintheReactorRecirculationSystem(DCP93-3062A)andFeedwaterSystem(DCP93-3062B)havetheirloopsre-spannedandindicatorsre-scaled.ThepurposeofthisistoensurethattheflowtransmittersandpressuretransmitterscoincidewiththePowerUprate.No..TlirtChfiiidi<<hbIil'ipofanyaccidentevaluatedintheFSAR.ThisDCPdoesnotinvolvetheadditionofequipmentorchangesinthetypeofexistingequipment.Thismodificationdoesnotincrease'theprobabilityofoccurrenceofamalfunctionofequipment.Thenewprocessconditionsarewithintherangeoftheinstrumentsandinterfacewithotherequipmentisunchanged.TheRecirculationFlowControlSystemflowinstrumentationanditsoperationandfunctionsarenotchangedbythismodification.Therefore,themodificationdoesnotincreasetheconsequencesofanaccident,nordoesitincreasetheconsequencesofamalfunctionofequipment.dllidi1pbtwyofanyaccidentevaluatedintheFSAR.Thetransmitteriscalibratedto10%ofitspublishedspecificationupperrangelimit.Thisextensionbeyonditsnormalrangeiswithinitscapabilitiesbydesign.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment.ThePowerUprateconditionsarewithinthecapabilitiesoftheinstrumentandinterfacewithotherequipmentisunchanged.Thismodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentsincetherearenosystemoperationsorfunctionschangedbythismodification.IINo.-ThesemodificationsdonotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedintheFSARbecausethere-spanningandscalingoftheRecirculationFlowControlSystemflowinstrumentsmerelychangescalibrationandscalerange,allphysicalandelectricalcharacteristicsareidentical.Sincethereisnoequipmentchangeinvolvedotherthanindicatorscales,thesemodificationsdonotcreatethepossibilityofamalfunctionofequipmentofadifferenttypethananyevaluatedintheFSAR.IllNo-ReviewoftheTechnicalSpecifications(TechSpecs)showsthatthefunctionsperformedbytheequipmentwithinthescopeofthesemodificationsarenotmentionedintheTechSpecs.Therefore,themodificationsdonotreducethemarginofsafetyasdefinedbythebasisforanyTechSpec.

95%53NL,Il,;dThismodificationwillprovideamethodtodraintheCondenserAreaTransferSump1SP100(2SP100)afteradrainlineisolationsignalfrom(a)FireProtectionSprinklersintheCondenserArea,(b)HighwaterlevelintheCondenserAreaTransferSump,or(c)OilIntrusionisolationsignalintoTurbineBuildingCentralAreaSumps1SP102(2SP102).ThiswillallowacontrolledflowtodraintheCondenserAreaTransferSump1SP100(2SP100)andresetthehighsumpwaterlevelisolation.ThisisnecessarytopreventfioordrainbackupandeventualfloodingoftheCondensatePumpRoom.5i&lhSfE:I.No.TheproposedCondenserAreaTransferSump'drainingiswithintheboundsofthedesignfeatures.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionnotpreviouslyevaluatedintheFSAR.IINo'.No.Failureofanyportionofthisequipmentwillhavenoeffectonanysafetyrelatedsystem.AspillisboundedbytheConcentratesTankscenario,anddoesnotaddafailuremechanismdifferentthanpreviouslyevaluatedintheFSAR.Theproposedchangedescribesanewmodetobypasstheisolationsignalsand.draintheCondenserAreaTransferSumptotheTurbineBuildingCentralAreaSump.Thisisnotanevaluatedaccidentormalfunction.TechnicalSpecification(TechSpec)3.11:1.3providesbasisandlimitingconditionsofoperationfortheLiquidRadioactiveWasteSystem.TheproposedCondenserAreaTransferSumpdrainingdoesnotaltertheoperationofcollectioritankrecircflowpaths.Theonlychangetothe.systemisanotheralternatemethodtodraintheCondenserAreaTransferSumpswhenaisolationsignalispresent.ThistestdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%54ThepurposeofprocedureMFP-QA-5250istoprovidetheactionsnecessarytotrackandcontiolworkactivitiesthatbreachtheNegativeLeakRateTest(NLRT)and/orPositiveLeakRateTest(PLRT)boundaries.ThiswillensurethatthedesignbasisleakratesforboththeNLRTandPLRTboundariesarenotexceededatanytime.lNo,ThedesignintentoftheSecondaryContainmentandtheStandbyGasTreatmentSystem(SGTS)arenotimpactedby'thisprocedure.Also,thedesignintentoftheControlStructurepressureboundaryandtheControlRoomEmergencyOutsideAirSupplySystem(CREOASS)arenotimpactedbythisprocedure.Therefore,themodificationdoesnotincreasetheprobabilityorconsequencesofanyaccidentormalfunctionofequipmentrelatedtosafety.llNo.IIINo.ThisprocedureonlyallowsbreachesoftheNLRTand/orthePLRTboundarythatresultinatotalcumulativeleakratelessthanthedesignbasisleakrate.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethatanypreviouslyevaluatedbytheFSAR.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(Tech.Spec),especiallyTechSpecBasis3/4.6.5and3/4.7.2.TheactionsproposedbyMFP-QA-5250ensurethatthedesignbasisinleakageratesspecifiedin3.6.5.1arenotexceeded.Also,'hedesignbasis~leakratespecifiedin3.7.2isnotexceeded.

94455C->>B,UiThepurposeofthismodificationistoincreasetheReactorWaterCleanup(RWCU)systemdesignflowfrom135GPMto148.5GPMthrougheachoftwofilterdemineralizers.Thisisneededtooffsettheeffectsofpoweruprateonreactorwaterchemistryandquality.No.Themodificationdoesnotaltersystemconfiguration,theReactorCoolantPressureBoundary(RCPB),oroperationallogic.Therefore,theprobabilityofoccurrenceofanaccidentofequipmentimportanttosafetyhasnotbeenincreasedbychangesproposedforthismodification.Therearenonewhardwareorsystemconfigurationchangesthatoccurasaresultofthismodification.TheRWCUSystemisolationresponsetime,fromtimeofbreakdetectiontoisolation,isunchanged.Nonewcomponentfailuremodesorprotectioninterfacefeaturesofequipmentimportantto'afetyareimpactedbythisproposedactivity.Therefore,thismodificationdoesnotincreasetheprobabilityofamalfunctionofequipment.The'consequencesofanypreviouslyevaluatedaccidentwillnotincreaseasaresultofthismodificationsincenoradiologicalconsequencesarealteredbytheseproposedchangestotheRWCUsystemandmonitoringinstrumentation.Therearenonewsystemorequipmentmalfunctionspostulatedwhichwouldresultinanyincreased~radiologicalconsequencesnotpreviouslyanalyzed.Thismodificationwillnotcauseamalfunctionofequipment,importanttosafety,previouslyevaluatedintheFSAR.No.Thismodificationcreatesnonewpathwaystotheenvironment.Thepossibilityforanaccidentofadifferenttype,thananypreviouslyevaluatedintheFSARhasnotbeencreatedsincethefunctionalityoftheRWCUSystemandtheRWCUleakdetectio'nsystem.isunchanged.TheoperationallogicandfunctionalityoftheRWCU.leakdetectionsystemareunchanged.Themodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttype.IIINo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpecSection3/4.3.2.ThenewproposedTechSpeclimitswillresultinanegligiblereduction'inthemarginbetweenRWCUSystem'isolationandthe4351GPMflowexpected-.duringapostulatedRWCUhighenergylinebreakoutsidecontainment.Alsotheinstrumentationservesnoothersafetyfunction.

95-056DCP94-9018,Unit2Thepurposeofthismodificationistoinstalla6diameterpenetrationthroughtheUnit2TurbineBuildingWestexteriorconcretewallpanel.ThiswillprovideamoredirectandsaferpassagetotheUnit2condenserareaforHydrolazeractivities.INo.ThenewpenetrationwillbedesignedandconstructedinaccordancewiththeACIandAISCcodesasspecifiedbytheFSAR.ConsideringthisandthefactthattheintegrityoftheTurbineBuildingexteriorconcretewallpanelwillbemaintained,thismodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.ThismodificationwillconformtoallthedesigncriteriaasspecifiedintheFSAR.Thereisnoequipmentimportanttothesafeshutdownoftheplantthatcouldbeimpactedbythismodification.Therefore,theactionstakenbythismodificationwillnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Thenewpenetrationwillbeproperlysealedduringnormalfullpoweroperationsoftheplant.Theproposed'actionstakenbythismodificationwillnotinvolveaprecursorofnorcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.IIINo.ThestructuralintegrityandqualityofshieldingprotectionfortheTurbineBuildingwallwillbemaintainedinaccordancewiththerequirements,andguidelinesprovidedintheFSAR.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III"No.Noneof,theparametersthatarethebasisfortheUnit2TechnicalSpecifications(TechSpecs)willbeaffectedbythismodification.Therefore,themodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95%57Themodificationwillredesigntheinterfacebetweenthetopoftheloadcellsandthehoistframesontherefuelingbridgeframemountedauxiliaryhoist(2H203)andthemonorailauxiliaryhoist(2M214).Thismodificationisneededtopreventprematurewearofthepartsandassureproperloadingalignment.rNo.Themodificationwillnotchangetheoriginaldesignfunctionoftheloadcell.Allautomatichoisttripsremainunchanged.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Therefuelingbridgeauxiliaryhoistsandtheirsubcomponents,suchastheinterfacemechanism,donotserveanysafety-relatedfunctions.ThemodificationwillalsoconformtoallofthedesignrequirementsspecifiedintheFSAR.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.,Theproposedmodificationdoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoff-sitedose.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.Thefunctionandperformanceoftherefuelbridgeauxiliaryhoistswillbeenhancedbytheredesignoftheloadcellinterface.Consideringthisandtheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo..Unit2TechnicalSpecification(TechSpec)3/4.9.6providessurveillancerequirementsfortherefuelingbridgeJplatformtodemonstratethatit'isoperablepriortoitsuse.Themodificatione'nhancesthemonitoringcapabilityoftheloadcellwhichwillbeprovenbytestingpriortohoistuse.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

9M58OC>>,~iThemodificationwillredesigntheinterfacebetweenthetopoftheloadcellsandthehoistframesontherefuelingbridgeframemountedauxiliaryhoist(1H203)andthemonorailauxiliaryhoist(1H214).Thismodificationisneededtopreventprematurewearofthepartsandassureproperloadingalignment.No.Themodificationwillnotchangetheoriginaldesignfunctionoftheloadcell.Allautomatichoisttripsremainunchanged.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Therefuelingbridgeauxiliaryhoistsandtheirsubcomponents,suchastheinterfacemechanism,donotserveanysafety-relatedfunctions.ThemodificationwillalsoconformtoallofthedesignrequirementsspecifiedintheFSAR.Therefore,'hemodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Theproposedmodificationdoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoff-sitedose.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Thefunctionandperformanceoftherefuelbridgeauxiliaryhoistswillbeenhancedbytheredesignoftheloadcellinterface.Consideringthisandtheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.illNo.Unit1TechnicalSpecification(TechSpec)3/4.9.6providessurveillancerequirementsfortherefuelingbridge/platformtodemonstratefhatit,isoperablepriortoitsuse.Themodificationenhancesthemonitoringcapabilityoftheloadcellwhichwillbeprovenbytesting'priortohoist,use.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisfora'yTech-Spec.

95%59OCP-,UiThepurposeofthismodificationistoremovetheunusedandabandonedexternallymountedlimitswitchesandsupportinghardwarefortheAnchorDarlingMotorOperatedValves(MOVs).Thiswillpermitmaintenancetoremovethesecomponentsandnotreinstallthemduringvalvework.No.Theactionstakenbythismodificationwill'notimpactthedesign,functions,oroperationoftheAnchorDarlingMOVs.Theseismicqualification,requiredformanyofthesevalves,isnotaffectedbytheremovaloftheselimitswitchassembliessincetheassembliesarenotpartoftheseismicvalvequalification,o'rtheseismicqualificationbinders.Theeffectsonadjacentsupportsduetotheremovalofthelimitswitchesisnegligible.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Theremovaloftheexternallimitswitchesand/orassociatedcomponentswillenhancefurthervalvemaintenancebyeliminatingunnecessarycomponentsattachedtothevalves.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo.,TechnicalSpecifications(TechSpecs)areaffectedbytheunused/non-functionalexternal'imitswitchassemblies,TheproposedmodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

9&060ThepurposeofTP-26231(TP)istocontrolthereplacementoftheexistingReactorVesselInstrumentationCondensingChambersXY-B21-2D004AandB.Thereplacementofthesechamberswillpreventnonwondensablegasmigrationtotheinstrumentreferencelegandcausepossibleerroneouslevelindication.'ENo.Duringthismodificatign,thefuelracksandthecontainedfuelwillremaincoveredwithwater.PlugswillbeinstalledintoReactorVesselInstrumentationpenetrationH12A/B(upper/referencelegpenetration)andH11A/B(lower/variablelegpenetration)withthismodification.Sincetheseplugswillnotbesubjectedtoanypressureexceptheadpressurefromcavitylevel,whichwillmaintainthepluginthenozzle,theprobabilityofthenozzlefallingintothevesselorthecoreisminimal.Theplugswillbetiedoffwithalanyardtopreventtheplugfromfalling.Iftheplugsweretofallintothevessel,nocoreorfueldamagewouldoccur.Therefore,thisTP'doesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslydescribedintheFSAR.IINo.TheonlyaccidentormalfunctionthatcouldoccurwouldbethefailureofthenozzleplugscausingdrainingoftheReactorVessel/CavityandSpentFuelPool.Sincethecalculatedleakageof55GPMiswellwithintheavailablemakeupcapability,waterlevelcanbemaintainedat22feetabovetheracksandfuel.Therefore,areactorvessel/draindowneventwithrefuelgatesremovedwouldnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification(TechSpec)3.9.8requiresatleast22feetoverthetopofReactorPressureVessel(RPV)flangeduringthehandlingofirradiatedfuelassembliesorwhenirradiatedfuelassembliesareseatedintheRPV,bothwhileinCondition5.TechSpec3.9.9requiresatleast22feetovertheirradiatedspentfuelinthefuelpool.ThecalculatedleakagethroughtheRPVpenetration,withnopluginstalled,iswellwithinthemakeupcapabilitiesofthesystemsavailable.Therefore,theminimumwaterlevelismet.Consideringtheabove,thisTPdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

9~61cp.uThepurposeofthismodificationistorepairacrackinaUnit2steamdryer'channeltosupportringweld.Themodificationisnecessarybecauseitwilleliminatethecrack.Alsotheadditionalweldmaterialwillreducetheprobabilityofnewcrackinginthisarea.No.Thesteamdryerisano~ode,nonwafetyrelatedrea'ctorinternalcomponent.Thismodificationwillnotaffectthedryerfunction,itsimplyreplacesacrackeddrainchanneltosupportringweld.Theoverallstructuralperformanceofthedryerisnotaffectedbythismodification.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesof.anaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Consideringthestatementsabove,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.ThesteamdryerisnotaddressedintheTechnicalSpecifications(TechSpecs).Itisanonwode,nonwafetyrelateditem.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

e 9S-062C.,UThepurposeofthismodificationistoinstallTSIThermo-LagfirebarrierwrappingtoConduitB1K019.ThismodificationisnecessarytoprovideprotectiontoConduit81K019locatedinFireZone1-5A-S.INo.Themodificationwillprovideadditionalprotectionforthesafeshutdowncircuit.Thestructuralandseismicrequirementsfortheconduitsarenotaffectedbytheadditionofthefirebarrierwrapping.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Theadditionofthefirebarrierwrappingtoconduit81K019willnotincreasedosetothepublicabovethelicensinglimit.Therecouldbenoeffectpossibleontheaccidentsthathaveradiologicalconsequencesasaresultofthismodification.Also,nonewradiologicalconsequencescanoccur.Therefore,therewillbenoihcreaseintheconsequencesofanaccidentofmalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Theadditionofthefirebarrierwrapping,willnotresultinanyrisktopublichealthandsafety.Nonewaccident.scenariosormalfunctionsofadifferenttypecanresultbecausenoneworun-'analyzedadverseequipmentorcircuiteffectsarepossible.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanevaluatedintheFSAR.IIINo.FireratedassembliesareaddressedinTechnicalSpecification(TechSpec)3/4.7.7.Thereliabilityof,theelectricalcablestoperformtheirrequiredfunctionsisnotreduced,butratherrestoredtotheoriginaldesignbasis.Noplantparametersareaffectedbythismodification.Therefore,themarginofsafetyasdefinedinthebasisforanyTechSpecisnotreducedbythismodification.

95%63Sl9ThepurposeofthismodificationistoincreasethehighpressurealarmsetpointforswitchPSH&32-2K636to1050psig.ThismodificationisrequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.No.SwitchPSH<32-2K636isanon-safetyrelatedinstrumentandonlyprovidesawarningalarmforhigh.reactordomepressure.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentortheconsequencesofanaccidentaspreviouslyevaluatedintheFSAR,Theequipmentoperateswithinitsdesigncapabilityattheincreasedpressure.Therefore,themodificationdoesnotincreasetheprobabilityofamalfunctionofequipmentortheconsequencesofamalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.Thissetpointchangedoesnotinvolveanyhardwareorsystemfunctionchanges.Themodificationaffectsanon-safetyrelatedinstrumentandthefunctionofthedeviceisnotchanged.The'ossibilityofadifferenttypeofaccident,notpreviouslyanalyzed,isnotapplicable.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentofadifferent.typethananyevaluatedpreviouslyinthe'SAR.IIINo.Arevie'woftheTechnicalSpecifications(TechSpecs}confirmsthatthereactorpressurevesselalarmsetpointforPSHC32-2K636isnotrequired.toenforceanyTechSpecs.Therefore,thissetpointchangedoesnotr'educethemarginofsafetyasdefinedinthebasisforanyTechSpecs.1 95%64ME-F,IiiThepurposeofthisnewprocedureistocontroltheproposedactivityofinstalling20newjetpumpholddownbeams.No.Theproposedactivitydoesnotincreasetheprobabilityofoccurrenceortheconsequencesofaccidents'ormalfunctionsofequipmentimportanttosafetyasevaluatedintheFSAR.Thisactivityisbeingperformedwiththecoredefueledandoneloopofcoresprayfunctional.Allequipmentisbeingusedwithinitsdesignbasis.IINo.TheproposedactivitydoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethanevaluatedpreviouslyintheFSAR.Nonewfailu'remodesarecreatedandtheplantwillbeinanimprovedconditionafterthemodificationisperformed.IIINo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec).ThejetpumpoperabilityTechSpec3/4.4.1.2isonlyrequiredduringConditions1and2.Sinceallthisworkisbeingcompletedwiththecoredefueled,nodecreaseinsafetywilloccur.

95465OCP-...0DCP93-3092A6BUnit1ThepurposeofthismodificationistomodifytheUnit1ResidualHeatRemoval(RHR)andCoreSpraypumpdischargecheckvalves.Thiswilllimitthevalvediskopeningangletoenhancetheclosingcapability,ensurestabilityofdiskduringminimumandmaximumflowconditions,eliminatethevalvehandlewhileinstallingvalvediscpositionindicationoffofthevalvehingepin,andachieveproperclearancestoavoidinterferencebetweenmovingpartsandthevalvebody.5@dhdhKYINo.Themodificationtothedischargecheckvalvecannotaffectthefunctionofthesuctionvalve,becausethemodificationdoesnotalterthemethodofoperationofthedischargecheckvalve.Thecheckvalveisnotconsideredahighstresslocation.Further,themodifiedcheckvalvesmeetalldesignpressureandseismicrequirements.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Modificationofthecheckvalvesmaintainsthedesignbasisstructuralintegrity.ReliabilityofsystemoperatiohandoperationofequipmentimportanttosafetyintheCoreSprayandRHRsystemshasnotdecreased.Thedesignbasisaccidentisnotchangedbythismodification.TheCoreSprayandRHRsystemsfunctionsareimprovedandthereisooincreaseinradiationdosetothepublic.Themodificationtothepumpdischargecheckvalvesimprovestheirsafetyfunctionoperability.Therefore,themodificationdoesnotincreasetheconsequencesofamalfunctionofequipnientimportantto'afetyaspreviouslyevaluatedintheFSAR.IINo.Thefunctionofthecheckvalvesisunchanged.Flowthroughthepumpdischargecheck'alvesmeetsthedesignbasisrequirementsforallmodesofoperation.Modificationsofthevalvesimprovecapabilitytoopenandclosewhilemaintainingdynamicqualificationandpositionindicationfeatures.Therefore,themodificationdoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSAR.Themodificationprovidesanopeninglimitationandimprovesdiscalignmentandclearances,forproperseating.Therefore,'hemodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheTechnicalSpecifications(TechSpecs)reviewedformarginsofsafetyapplicabletothecomponentsandsystemsaffectedbythismodificationare:2.14,3/4.3.3,3/44.9,3/4.5.1,3/4.5.2,3/4.5.3,3/4.6.2.2,3/4.6.2.3,and3/4.9.11.Consideringtheabove,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

cThemodificationwillprovidetheUnit2SafetyParameterDisplaySystem(SPDS)softwarechangesidentifiedinthePowerUprateProject,whicharenotpartof,orincludedinotherPowerUprateProjectDesignChangePackages.ItwillalsodefinethetestingrequiredtoassuretheoverallSPDSfunctionalitypostPowerUprateProjectmodifications.No.TheSPDScomputersandsoftwarearenotsafety-relatedanddonotimpactanyFSARanalysis.ThismodificationupdatesthealarmlimitschangedbythePowerUpratesothatthevalidityofthedisplayedinformationisnotaffected.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.IINo.Thefailuremodesafterthismodificationremainthesameasbeforethemodification.ThemodificationwillinnowayaffecttheavailabilityoftheSPDS.Therefore,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluated-previouslyintheFSAR.IIINo.TheproposedsoftwarechangestotheSPDSdonotaffectanysystemsorfunctionsaddressedintheTechnicalSpecifications(TechSpecs).Therefore,themodificationdoesnotreducethemarginofsafetyasdefine)inthebasisforanyTechSpec.

95%67OC>>,UiThepurposeofthemodificationistorelocateMainSteamisolationValve(MSIV)conduitsandreplacethecablingintheseconduitsthatwasdegraded.TherelocationoftheaffectedMSIVconduitswilleliminatethe'damageanddegradationcausedbyexcessiveheat.QlhihdhRLINo.Thereisnoadverseimpactonplantequipmentasaresultoftheproposedaction.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesoftheaccidentsdescribedintheFSAR.TheproposedactionprovidesforcontinueddesignbasisoperationoftheMSIVsanddoesnotadverselyaffectthefunctionoftheMSIVs.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofthemalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.'o,IIINo.Therearenonewfailuremodesofequipmentimportanttosafetyassociatedwiththeactivitiesofthismodification.Thefunctionanddesigncriteriaofallcomponentsremainthesame.Therelocationofconduitandcablingdoesnotcreatethepotentialforanewtypeofunanalyzedaccidentoranew.typeofmalfunction.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttype.TheTechnicalSpecifications(TechSpecs)reviewedformarginsofsafetyapplicabletothecomponentsandsystemsaffectedbythismodificationare:3/4.4.7,3/44.7;and3/4.3.1.Thepr'oposedactiondoesnotaffecttheoperationorclosingtimecapabilityoftheMSIVsanddoesnotreducethemarginofsafetydefinedinthebasisforTechSpec3/4.4.7.RelocatingthecablingtotheMSIV-LeakageControlSystem(LCS)does.notreducethemarginofsafetydefinedinthebasisofTechSpec3/4.6.1.4.Therelocationoftheconduitandassociatedcablingwillnotimpacttheoperationofthelimitswitches,nordegradeanyReactorProtectionSystemresponsetimessincethecircuitfunctionsremainthesame.Tlierefore,themarginofsafetyasdefinedinTechSpec3/4.3.1isnotreduced.

9568~SCPj94-2032,Unit2ThepurposeofthismodificationistochangethesetpointsfortheUnit2RodBlockMonitor(RBM),channelsAandB,forbothsingleandtwoloopreactorrecirculationoperation.ThesesetpointchangesaretobeimplementedtosupportPowerUprateoperations.No.TheRodBlockMonitorandassociated"setpointsaredescribedinFSARSection7.7.1.11.TheRBMdoesnotperformanysafetyfunctionandisnotrequiredforthesafeshutdownoftheplant.ThissetpointchangedoesnotchangethefunctionoftheRBM.Also,thesetpointchangedoesnotrepresentachangefromthecurrentlimits.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.-TheproposedactiondoesnotchangethefunctionoftheRBMor.anyotherplant..equipment.Therefore,thesetpointchangedoes"notcreatethepossibilityofanaccidentormalfunctionofequipmentofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.TheTechnicalSpecifications(TechSpecs)applicabletotheRBMincludeTechSpecs3.3.6,3.4.1.1.2.5.a,Table3,3.6-2,andBases.3/4.4.1.TheRBMsetpoints.affectedbythisSCParenon-technicalspecificationrelatedbutwererevisedtomaintaintheoperatingmarginfromtherevisedTechSpecsetpoints.Therefore,themodificationwillnotreducethemarginof.safetyasdefinedinthebasisofany.TechSpec.

95%69CH-SY%16,UnitCommonThepurposeofthisnewprocedureistomonitorzebramusselsbyinstallingtwosamplingracksinthespraypond.INo.PlacementofthetwosmallsamplingracksinthesprayponddoesnotinitiateaLOCA,LOOP,oranyotherFSARaccident.TheplacementofthesampleracksinthesprayponddoesnotaffecttheoperationofthespraypondottheoperationoftheEmergencyServiceWater(ESW)andResidualHeatRemovalServiceWater(RHRSW)pumps.Inaddition,becauseofthesizeandpermeabilitytoflowofthetestracksandbaskets,theirpresencedoesnotposeathreattoprovidingflowthroughthepumphouseintakescreenstotheESWand'RHRSWpumps.Therefore,theproposedactiondoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyasalreadyanalyzedintheFSAR.IINo.Theinstallationofthesampleracksinthespraypondhasnoadverseaffects'ontheabilityoftheESWandRHRSWsystemstoperformtheirintendedfunctions.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentofadifferenttypethanany'previouslyanalyzedintheFSAR.IIINo.TheaffectedsystemsandcomponentsareaddressedinSections3.7.1.1,3.7.1.2,and3.7.1.3oftheTechnicalSpecifications{TechSpecs).Theproposedactionsenhance,ratherthandegradetheabilitytocomplywithplantTechSpecs.'herefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%70c-,~Thepurposeofthismodificationisto:1)ProvidehoseconnectionstoallowtheuseofvendorsuppliedCoolingTowerTreatmentandDetoxificationchemicals.2)3)ReplacetheSOzshedwithapreengineeredbuildingandupgradetheelectricalsupplyintheoldshedtosupplythenewshed.Isolateanddeactivatethedomesticwatershowersandeyewashstationsandreplacethemwithanewportablemodel.4)IsolatetheabandonedSO>andChlorineSubsystemsfromalloperableplantsystems.Thiswilleliminatethepotentialoffallingcoolingtowericeinthewinterbysupplyingabuildingcapableofprotectingthetwovendorsuppliedstoragetanks,relatedpumps,andpipingfromfreezingtemperatures.Thismodificationwillalsoprovideisolationvalvesand'langesforeasy.connectionofthevendordetoxificationchemicalskid.INo~ITFSARChapters6and15werereviewedforthismodification.Thebiocidechemicalsaddedinthismodification,havebeeninuseforoverayearatSSES.DuringthattimethebiocidehasprovenitselftobeaneffectivebiologicalcontrolagentwithnoadverseeffectsontheCondenserVacuum.Therefore,theproposed"actiondoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyanalyzedintheFSAR.TheDomesticWaterandCoolingTowerChlorineandAcidSystemsandthesystemstowhichtheyconnectarenotsafetyrelated.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurr'enceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.TheDomesticWaterandCoolingTowerChlorineandAcidSystemsarenon-radioactiveandarenottiedinanywaytoaradioactivesystem.Theproposedactiondoesnotinvolveaprecursoroforasignificantcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyas"previouslyevaluatedintheFSAR.No.ThemodificationwillbedesignedtomeetallapplicablerequirementsofASME/ANSI831.1andIEEEcodestoensureitsstructuralandfunctionalintegrity.Thesystemsaffectedcontainnoradioactivematerialanddonotaffect'anysafetysystems.Thechemicalsproposedforuseinthismodificationwouldnotcausehabitabilityproblemsinthepowerblock.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo.ThemodificationdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs).Therefore,theactionstakenbythismodificationwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%71CPThepurposeofthismodificationistomodifytheMotorOperatedValve(MOV)HV-155F012,intheHighPressureCoolantInjectionSystembyreplacingtheactuatorandmotor.ThelargeractuatorwillprovideincreasedpullouttorqueandwillensurethatthevalvedesignrequirementsofPP&L'sGenericLetter89-10programaremet.ThemodificationwillalsoprovideanimprovedrangeoftorqueswitchsettingsforthevalvetofacilitateVOTEStesting.SJhihlhRY:I'o.FSARSections3.9.3.2b.2,6.2.6.3;6.2.3.2.3,6.2.4,6.3.2.2.1andTables6.2-12,6.2-22and6.2.4.3.3.3werereviewedforthismodification.ThemodificationhasnoimpactonthedynamicqualificationoftheMOV.Theincreasedactuatortorquewillimprovethevalve'scapabilitytoisolate,whilenotadverselyaffectingthepressureretainingcapabilityoroperabilityofthevalve.Thevalveleakagecriteriaisnotchangedbythismodification.Themodificationhasnoimpactontheseismicqualificationofcontrolcenter1D264.AlsotheabilityofHV-155F012toopenorclosewhenrequiredisnotaffectedbythis'odification.Therefore,the.modificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyanalyzedintheFSAR.IINoConsideringtheabove,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.III'No.Theaffectedsystem'sandcomponents'areaddressedinTechnicalSpecification(TechSpec)Bases3/4.5.1,3/4.6.1.1,3/4.6.1.2,3/4.6.3,and3/4.8.2.Valvepressureboundaryintegrityandseatleakagearenotaffected.Thevalvestroketimeiswithinthedesignbasisanalysisboundsof10secorids.Therearenoeffects'toanyofthesystemsorcomponentsmentioned"inthismodification.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%72OC9->>,UThepurposeofthemodificationistocorrecttheproblemwithexcessiveresinheelintheCondensateDemineralizerServiceVessel,resinsegregationduringresintransfer,andthelackofknowledgeofthestatusofthedrainedCondensateDemineralizerServiceVessel.,SilhQdhRY:No.FSARSections9.2.10,10.4.6,11.2,11.3,and15.2.7werereviewedforthismodification.Theproposedactiondoesnotaffecttheprimarycondensateorfeedwaterflowpath.Thefunctionandoperationofthecondensateorfeedwatersystemisunchanged.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentevaluatedintheFSAR.TheCondensateDemineralizerortheCondensateTransferandStoragesystemsarenotsafetyrelatedorrequiredforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.TheproposedactioncouldresultinanewflowpathfromtheCondensateDemineralizerVesseltotheCondenserintheeventofavalveleakageormisali'gnment.ThisflowpathcouldcreateapossibilityforamalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.However,aflowpaththroughtheCondensateTransferSystemtotheCondenserpresentlyexiststhroughthecurrentresininletline.Inaddition;areliablecheckvalvewillbeinstalledinthis"potentialflowpathtopreclude/minimizeflowtothecondenserdueto..valvemisalignmentorvalveleakage.Therefore,themodificationdoesnotcreatethepossibility.foranaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Theaffectedsystemsandcomponent'sareaddressedinTechnicalSpecification(TechSpec)Bases3/44.4and3/4.8.Theconductivitymonitoringequipmentwill-'otbeaffectedbythismodification.Electricalseparationandprotectiondevicecoordinationofthenon-Class1EpowercircuitensurethattheavailabilityahdtheoperabilityoftheupstreamClass1EpowersourcestoPanel2Y128arenotaffectedbythemodification.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%73DCP89-9151,UnitCommonThepurposeofthismodificationistorelocatetwoAandBlooptemperatureelementsintothenorthandsouthsideoftheCommonReturnAirDuctintheControlStructureHeating,Ventilation,andAirConditioning(HVAC)System.ThiswilloptimizethereturnairtemperaturemeasurementandprovidebettercontroloftheheatingandcoolingfunctionoftheControlStructureHVACSystem.INo.FSARSections6.4,7.3,and9.4providedescriptionsoftheHVACSystem.ThemodificationmaintainsthefunctionandoperationoftheexistingControlStructureHVACSystem.Theproposedactiondoesnotaffectthepresentbasis,design,orrequirementsoftheControlStructureHVACSystem.'Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.CIINo.Loweringthesetpointof'thehightemperatureswitchesisalsoconservativeanddoesnotchangethesystemdesignortheoperationoftheControlStructureHVACSystem.Therelocationofthetemperatureelementsandhightemperatureselectordoesnotintroduceadifferentfailuremode,butimprovesthesystembyprovidinganalarmontemperatureelementfailure.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpecSection3/4.7.2.Theproposedactiondoesnotaffecttheabilityoftheinstrumentloops,tomeettherequirementsoftheControlStructureHVACSystem,butenhancesoperabilitybyprovidingamorerepresentativereturnairtemperatureforcontrol.

00 9M74Thepurposeofthemodificationistoinstallpulsationdampers(snubberfilters)inthetubingconnectedtotheE"D/GDCMotorDrivenAuxiliaryDieselOilBoosterPump.Theinstallationofthesedamperswilleliminatepressuresurgestotheswitches,therebypreventingunnecessarystartoftheboosterpump.No.Themodification-.isdesignedtobeconsistentwiththeoriginaldesignrequirementsfortheboosterpump.Also,theproposedactionmeetstheoriginaldesignbasisandoperationoftheboosterpump.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentoramalfunctionofequipmentimportanttosafetydescribedinFSARChapters6and15..IINo.Consideringtheabove,themodificationdoesnotincreasetheprobabilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Theproposedmodificationwillnotjeopardizethestartingabilitynortherunningcapabilityofthe"EDieselGeneratorasdescribedinTechnicalSpecification(TechSpec)Section3/4.8.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95475~SCP)93-2086,Unit2Thepurposeofthismodificationistoincreasetheprocesssetpointfor'eactorsteamdomeAnticipatedTransientWithoutScram-RecirculationPumpTrip(ATWS-RPT)highpressureswitches,PSB212N045A,B,C,&Dfrom1108psigto1123psig.Thismodificationisrequiredto"accommodatetheinc'reasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.'INo.TheATWS-RPTtripinstrumentationisdescribedinFSARSection7.1.2a.l.30,andassociatedaccidentscenariosarediscussedinFSARSection15.8andAppendix15A(Event51).Theassociatedtripsetpointandallowablevalueremainunchangedandthesafetyfunctionoftheswitchesremainunchanged.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo..Consideringtheabove,theproposedactiondoeshotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III'o.TheTechnicalSpecification(TechSpec)TripSetpointandAllowableValueforthereactorsteamdomepressureforATWS-RPTaregiven.inTable3.3.4.1-2oftheTechSpecs.TheproposedmodificationhasanadequateoperatingmargintoavoidspuriousATWStripsandtoensureactuationpriortoreachingtheTechSpecallowablevalue,Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%76CPI->>,IIiThepurposeofthismodificationistoincreasetheprocesssetpointoftheReactorCoreIsolationCooling(RCIC)turbineelectronicoverspeedsystemto5093rpm.ThismodificationisrequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.No.FSARSections15.2.7.2.3,15.2.9.3.2,'15.2.9.3.2.1,15.2.9.3.2.2,15.2.9.3.2.37.1.2a.1.18,andTables7.$-2,7.1-3,and7.1-9werereviewedforthismodification.Theelectronicoverspeedtripdevicedoesnotprovideasafetyfunction,andthereliabilityofthe-deviceisnotaffectedbythenewlyproposedsetpoints.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentaspreviouslyevaluatedintheFSAR.ThissetpointchangedoesnotexceedthetripsetpointwhichwaspreviouslyrecommendedinGeneralElectricServiceInformationLetter(GESIL)0382.DesignanalysisbyGEconfirmsthattheRCICpumpwilloperateatthehigherloadsrequiredbyPowerUprate.Therefore,raisingtheelectronicoverspeedtripdevicesetpointwillnotcontributetoanincreasedprobabilityofoverspeedtriporotherequipmentmalfunctionaspreviouslyevaluatedintheFSAR.TheRCICpumpwillcontinuetoperformitscoolingfunctionaspreviouslydesigned.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentpreviouslyevaluatedintheFSAR.Changingtheelectronicoverspeedtripsetpointdoesnotmakefailuremorelikelyoraffecttheconsequencesinanymanner.Therefore,themodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafetyaspreviously'valuatedintheFSAR.II.No.Themodification.doesnotinvolveanyhardwarechangesorchangethesystemfunction.Thefunctionandoperabilityoftheequipmentisnotalteredbythesetpointchange.ThetripsetpointiswithintherecommendedsettingofGESIL382.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviously'intheFSAR.IIINo.TheRCICelectronicoverspeedtripfortheRCICturbineisnotreferencedintheTechnicalSpecifications(TechSpecs)forUnit2.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

957?Thepurposeofthismodificationistoreplace248irradiatedSPC9x9-2fuelassemblieswith248freshSPC9x9-2assembliesandreshuNetheremainingfuelassemblies.ThiswillformaconfigurationwhichwillprovidetherequiredenergyforUnit2Cycle7(U2C7)operationandmaintainthesamemarginofsafetyasinpreviouscyclesundernormaloperatingconditions.INo.TheapplicablesectionsoftheFSARwhichareaffectedbythecoreloadingarechapters4,5,6,and15.Thecoreloadingwillnotaffectthefailuremodeofanyplantsystemorcomponent,norwillitaffectthe.probabilityofoccurrenceofany.transientoraccidentinitiatingevent.SafetyanalysesperformedfortheoriginalU2C7coredesignhavebeenevaluated.Ithasbeendeterminedthattherevisedcoreloadingremainsapplicabletotheoriginalcoredesign.Theanalysesandevaluations,includingtheirsupportingcalculations,havebeendocumented,reviewed,andapprovedinaccordancewithapplicabledesigncontrolprocedures.Therefore,themodificationdoesnotincreaseth0consequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheUnit2Cycle7coredesignismechanically,thermal-hydraulically,andneutronicallyverysimilartopreviouscoreloadings.Itdoesnotcreateanynewordifferentinitiatingevents,failures,orfailuremodesthathavenotbeenpreviouslyconsideredorevaluated,nordoesitmakeanyaccidentsormalfunctionspreviouslyconsideredincredible,anymorecredible.Asaresultofthischangetherearenonewaccidentsormalfunctionsthatmu'stbeconsideredwithinthedesignbasisoftheplant.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviously'intheFSAR.IIINo.TheapplicableTechnicalSpecifications(TechSpecs)referencedbythismodificationare2.0,3,1,3.2,3.4,and6.9.3.TheU2C7coreloadingdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemorcomponentandwillmaintainanequivalentmarginofsafetyascurrentlydefinedinthebasisoftheapplicableTechSpecssectionsreferencedabove.L 9&4T8ThepurposeofthismodificationistoreplacetheexistingKCR-21batteryentirelyorpartiallywithnewKCR-19cellsdependingontheiravailability.Theadditionofthe60KCR-19cellswillreducebatterycapacityof2D620buttherewillbesufficientcapacitytomeetthe4hourloadprofile.PartialreplacementwillresultinanimprovedconditionsincetheKCR-21arehighercapacitycells.INo.Theone-for-onechangeoutofthe125VDCbatterycellsonbattery2D620doesnotchangetheabilityofthebatterytoperformitssafetyfunction.Thedecreaseincapacityhasnoadverseeffectsontheabilityofthecurrentlyinstalledconnectedcabling,circuitprotection,andcircuitdisconnectdevicestowithstandthepossiblefaultcurrents.Thischangedoesreducetheengineeringmarginforfuturedesignsaddingloadtothe125VDCsystem.ThereductioninengineeringmarginwillnotaffecttheabilityoftheKCR-19batterytomeetalldesignbasisrequirements.HydrogengeneratedfromtheKCR-19batteryisadequately'removedbytheventilationsystemandthereforeposesnocompromisetoplantsafety.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafetyaspreviouslyevaluatedintheFSAR.No..FSARSection8.3.2wasreviewedforthismodification.Theshort-circuitcurrentassociatedwiththesmallercapacitybatterydoesnotaffecttheabilityoftheinstalled'ircuitbreakerstoprovideshortwircuitpiotectiontorelatedequipment.Thenewbatteryhasanacceptableseismicresponseandanabilitytosatisfyloadprofilerequirementsthatdonotcompromisedesignintegrity.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethan=anypreviouslyevaluatedintheFSAR.INo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.8.2.TheKCR-19batterieswillresultinanetdecreaseinbatterycapacity.TheKCR-19batterywillhowever,havesufficientcapacitytomeetalldesignbasisrequirements,includingtheTechSpecandStationBlackoutloadprofiles.Adequatevoltagewillexistattheenddeviceloadsattheendofthefourhourprofiletoassureequipmentoperability.

95-079ThepurposeofthismodificationistoraisethesetpointoftemperatureelementsTSH-21206A/BtothenewResidualHeatRemovalServiceWater(RHRSW)designtemperatureof97degrees.ThemodificationisrequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.No.FSARSectionsreviewedforthismodificationwere1,2,2.4,7.3,9.2,and15.2.Theinstrumentloopsarenon-safetyrelatedandprovideanalarminthecontrolroomiftheRHRSWinlettemperaturesreachtheirdesignlimit.Theswitchesandtemperatureelementswilloperatewithintheirnormaloperatingranges.TheoperatoractionsassociatedwiththealarmresponseprocedureAR-209<01willnotchangeasaresultofthismodification.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.'o.Themodificationdoesnotinvolveanyhardwareorsystemfunctionchanges.ThemodificationwillallowthesubjectalarmtoretainitsfunctionatthenewRHRSWdesigntemperature.Therearenooperatoractionsrequiredthatcouldinitiateanyoperationaltransients.Therefore,themodificationdoesnotcreatethepossibilityfor.anaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecifications(TechSpecs)relatedtotheRHRSWsystemincludeTechSpecs3/4.7.1.1and3/4.7.1.3.Sincethemarginofsafetyismaintained,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%80DCP93-9048,Units1and2ThepurposeofthismodificationistoinstallanewcoveronthehatchwayatElev.726'ZfortheEDieselGeneratorVentilationExhaustFanOV512E3..TheadditionofthehatchcoverwillpreventrecirculationofexhaustfromOV512E3backintotheEDieselGeneratorRoomandeliminatethepotentialforraisingtheambienttemperatureintheroomabovethedesigntemperatureof120degreesFwhilemaintainingsafeaccessthroughthehatchway.No.FSARChapters6and15werereviewedforthismodification.Therearenoengineeredsafetyfeaturesoraccidentscenariosthatwouldbeimpactedbytheactionstakenbythismodification.ThemodificationwillbewithintheoriginaldesigncriteriaspecifiedintheFSARanddoesnotintroduceanynewfailuremodesfortheaffectedsystems.Theproposedactionstakenbythismodificationwillnotinvolveaprecursorofnorcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Consideringtheabov'e,themodificationdoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.8.1.NoneoftheparametersthatarethebasisfortheUnit1and/orUnit2TechSpecswillbeaffectedbythismodification.

95481tl.S,liiV,iThepurposeofthismodificationistomanuallyisolatetheAutomaticThermalPurgeRecoverySystem(ATPRS)ontheControlStructureChillers(OK112A/B),Unit2Turbine'uildingChillers(2K102A/B),RadwasteBuildingChillers(OK325A/B),andUnit2ReactorBuildingChillers(2K206A/B).ThiswilleliminatetheinadvertentoperationoftheATPRSthathasresultedinseveralreleasesofChloroflourocarbons(CFCs)intotheatmosphere.INo.ThemanualisolationoftheATPRSwillnotincreasetheprobabilityofoccurrenceofanaccidentormalfunctionbecauseitsfunctionisnotnecessarytooperateormaintainthechillersmentionedabove.Itwillalsoeliminatethepossibilityofrefrigerantleakageintroducedwiththeautomaticsystem.ThemodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionoftheControlStructureChillersbecauseitisnotrequiredfortheequipmenttooperate.No.ManualisolationoftheATPRSonanychillerwillnotresultinanyrisktopublichealthandsafety.Nonewaccidentscenariosormalfunctionsofa.differenttypecanresultbecausenoadverseequipmenteffectsarepossible.'herefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThereisnospecificmentionorbasesforanyofthechillersmentionedinthismodificationintheTechnicalSpecifications(TechSpecs).Therefore,'hemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%82DC-,UiThemodificationwilladdaclamptotheAveragePowerRangeMonitoi(APRM)flowbiasedupscalealarmandrodblock.ByaddingtheclamptotheAPRMrodblock,thealarmandrodblockwillcoincidewiththeproposedsetpointof108%thermalpower.No.UponreviewofFSARSection7.1,?.?,and15.4'twasconcludedthatthemodificationwillnotincreasetheprobabilityofapostulatedaccidentpreviouslyidentifiedandevaluatedintheFSARbecausesafety-relatedtripfunctionsoftheAPRMarenotchanged.NootherAPRMsystemfunctionsareaffected.TheexistingAPRMsetpointsremainunchangedfromthatpresentlyidentifiedinTechnicalSpecification(TechSpec)Table2.2.1-1andSection3.2.2.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofamalfunctionofequipment.Themodificationdoi;snotalterthesafety-relatedornon-safetyfunctionoftheAPRMSystemasdescribedinFSAR..7.1.2a.1.4.4.1or7.1.2a.1.4.4.3.Themodificationdoesnotaffectthetripfunction.Therefore,themodificationdoesnotincreasetheconsequencesofanaccident.IINo.AllotherexistingfunctionsoftheAPRMsystemandcircuitsremainthesame.UponreviewofFSARSections7.1,7.6,7.7,and15.4,itisconcludedthatthemodificationdoesnotcreateapassibility.foranaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III""No.ApplicableOperationalConditionsaieidentifiedinTechSpecSections3/4.2.2,3.4.1.1.2,andTables2.2.1-1,3.3.1-1,3.3.6.1,and3.3.6.2.ThemodificationdoesnotaffectanyAPRMfunctiondescribedintheFSARoranyTechSpec.Therefore,themodificationdoesnotreducethemarginofsafetyforanyTechSpec.'

95483DCP93-3062A&B,Unit2DCP93-3062Are-spanstheexistingUnit2ReactorRecirculationSystemFlowTransmittersandcorrespondingelectronics.ThemodiTicationwillalsore-scaletheassociatedindicators,recorders,andcomputerinputs.DCP93-3062Bre-spanstheNarrowRangeReactorPressureTransmitter.ThesemodificationsarerequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.SUMMIT:INo.ThemodificationdoesnotincreasetheprobabilityoftheoccurrenceofanyaccidentevaluatedinFSARSections5and15.Thetransmitters,squarerootextractorsandsummerre-spanningalongwiththeindicatorandrecorderre-scalingmerelychangethe'calerange.Allphysicalandelectricalcharacteristicsoftheelectronicloopsare.identical.Themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipment.Thenewprocessconditionsarewithintherangeoftheinstrumentsandtheinterfacewithotherequipmentisunchanged.ThemodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentsincetheRecirculationFlowControlSysteinflowinstrumentationanditsoperationandfunctionsarenotchangedbythismodification.ThemodificationdoesnotincreasetheprobabilityoftheoccurrenceofanyaccidentevaluatedinFSARSections15.1.2and152.7.Thetransmitteriscalibratedto10%ofitspublishedspeciflicationupperrangelimit.Theextensionbeyonditsnormalrangeiswithinitscapabilitiesbydesign.Themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentbecausethere-spanningofthetransmitterdoesnotaltertheFeedwaterControlSystem.Themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentsincethesysteminstrumentationhasnofunctionrelatedtopreventingtheuncontrolledreleaseofradioactivitynordoesitaffectanyequipmentthatdoes.IlNo.ThemodificationdoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSARbecausethere-spanningandre-scalingoftheRecirculationFlowControlSystemflowandFeedwaterControlSysteminstrumentsmerelychangethecalibrationandscalerange.Allphysicalandelectricalcharacteristicsareidentical.Theindicationandrecordingfunctionsperformedbythefiowinstrumentationwithinthescopeofthesemodifications.arenotmentionedintheTechnicalSpecifications.Therefore,theexistingsystemmarginsarenotaffectedbythismodificationpackage.

TheproposedactionistoperformasinglediscliargetestthatwillincorporatetherequirementsofboththePerformanceandServiceTests.No.Replacementofthe2D620125VDCBatteryBankdecreasestheavailablecapacitywithonlytheKCR-21cells,FSARSection8:3.2.1.1.4requiresthebatterytohavesufficientcapacitytosupplytherequiredloadforfourhours.Inaddition,TechnicalSpecification(TechSpec)4.8.3.2.1(d)specifiestheloadprofileforafourhourdischarge.Performingasingledischargetestwilldemonstratethatthebatterywillmeetitsdesignbasisrequirements.ChangingtheproceduredoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafetyaspreviouslyevaluatedintheFSAR.II.No.FSARSection14.2.12.4describesthepreeperationaltestingforthe.125VDCsystemanddescribesdoingaseparatePerformanceandServiceTest.Theproposedchangecombinesbothtestsintoasingledischargetestundervendorrequirements.TheModifiedPerformanceTestadequatelydemonstratesthebattery'sabilitytodeliveritsratedcapacityandsupplythedesign'basisloadprofile.Therefore,thistestdoe'snotcreateapossibilityforanaccidentormalfunctionofadifferenttypethan,previouslydemonstratedintheFSAR~No.TechSpec4.8.2.1describessurveillancerequirementsforthe125VDCsystem,inadditionSection3.8.2.1describestheminimumrequirementsforoperability.ThenewKCR-19cellswillresultinanetdecreaseinbatterycapacityfromtheoriginalKCR-21,Thenew'cellswillhoweverhavesufficientcapacitytomeetalldesignrequirementsincludingtheTechSpecandStationBlackoutloadprofiles.Performanceofthistestwillshowthebattery'sabilitytomeetandexceedtherequirementsforboththeServiceTestandthePerformanceTestdescribedinTechSpec3.8.2.1.Therefore,theproposedtestdoesnotreducethemarginofsafetyassetforthintheTechSpecBases.

95485ThepurposeofthismodificationistoaddanewContainmentRadiationMonitor(CRM)andWetwellSampleSystemwithseparatecontainmentsamplelinesthatwillreplacetheexistingCRMs.ThenewCRMandWetwellSampleSystemwillsignificantlyreducethemaintenanceeffortrequiredtokeeptheCRMsoperable,eliminatetheoperationalproblemscausedbythedegradedconditionoftheexistingCRMSystemandtheeffectsontheContainmentAtmosphericControlSystem,andprovidearepresentativecontainmentairs'ampletothenewCRMswithinacceptableplateoutlimits.No.FSARChapters6and15werereviewedforthismodification.TheadditionofthenewCRMandWetwellSampleSystemdoesnotaffectanyofthepostulatedinitiatingeventsidentified.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccident.TheadditionofthenewCRMandWetwellSampleSystemdoesrepresentachangeintheprobabilityoftheoccurrenceofamalfunctionofequipment.TheadditionoftheauxiliaryrelaytotheDivisionIandDivisionIICACSystemcontainmentisolationlogicrepresentsthesourceofanothermalfunctioninthelogicduetotheadditionalrelayinthecircuit.Howevertheincreaseintheprobabilityofamalfunctionduetotheadditionalrelayisconsideredtobesosmallthatthechangeiswithintheerrorboundsassociatedwiththeoriginaldesigncalculationsanddoesnotconstituteasignificantincreaseintheprobabilityoftheoverallsystemmalfunction.Theprobabilityofanincreaseintheconsequencesofanaccidentisnotaffectedbytheproposedaction,ThenewCRMandWetwellSampleSystemareisolatedfromtheprimarycontainmentunderaccidentconditions.Theprobabilityofanincreaseintheconsequencesofamalfunctionofequipmentisnotaffectedbytheproposedaction.ThenewCRMandWetwellSampleRackcontainmentisolationvalvesandallofthecomponentswhichcomprisethevalvecontrolcircuitryincludingtheaccidentsignalandthepositionindicationcircuitryareallqualifieddevices.IINo.IlfNo.TheCRMSamplePanels,CRMLocalControlPanels,CRMRemoteControlandIndicationInserts,thenewnitrogenbottleracks,thenewRelayPanelsandthenewLocalComponentBoxesaremounted/anchored'inaccordancewiththedynamicallytestedand/oranalyzedconfigurationforsubjectequipment.TheoperabilityoftheCRMsisgovernedbyTechnicalSpecification(TechSpec)Sections3/4.4,3.AspartoftheReactorCoolantPressureBoundaryLeakDetectionSystem,theCRMsprovidethemonitoringanddetectionoftheairborneparticulateradioactivityandtheairbornegaseousradioactivityassociatedwithsystemleakage.Theproposedactiondoesnotaffecttheoperabilityrequirements,surveillancerequirements,oranyexistingmarginofsafetydefinedinTechSpecSection3/4.4.3.TheoperabilityoftheprimarycontainmentisolationvalvesforthesamplelinestothenewCRMsandWetwellSampleRackisgovernedbyTechSpecSection3.4.6.3.ThenewCRMandWetwellSampleRackSampleLineIsolationValvesaresolenoidvalveswhichcloseimmediatelyonanaccidentsignal.TheproposedactiondoesnotaffecttheoperabilityrequirementsofTechSpecSection3/4.6.3.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-086OCP.>>,UlThepurposeofthismodificationistoincreasetheReactorWaterCleanup(RWCU}Systemdesignprocessflowrate.ThismodificationisrequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.No.FSARSections3.6,5.2.5,5.4.8.1.1,7.3.1.1a.2,7.6.1.8,and15.6werereviewedforthismodification.ThemodificationdoesnotaltertheRWCUSystemconfiguration,theReactorCoolantPressureBoundary(RCPB),ortheoperationallogicoftheRWCUSystem.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccident.Noadditionalhardwareorsystemconfigurationchangesoccurasaresultofthismodification.TheRWCUSystem'isolationresponsetimeisunchanged.Nonewcomponent.failuremodesorprotectioninterfacefeaturesofequipmentimportanttosafetyareimpactedbythisproposedactivity.Therefore,themodificationdoesnotincreasetheoccurrenceofamalfunctionofequipment.Consequencesofapiperuptureaccidentduetoabreakinthebottomheaddrainlineremainunchanged,sincetheflowrateoutofthebreakislimitedtothereactorbottom.beaddrainnozzlesize.TheincreasedfiowratehasanegligibleeffectontheASMEClass263RWCUSystempipewhip,jetimpingement,andmassreleaseaccidentcalculation.Therefore,theconsequencesofanaccidentarenotincreased.Therearenomalfunctionspostulatedthatwouldresultinanyincreasedradiologicalconsequences.Therefore,themodificationdoesnotincreasetheconsequencesofamalfunctionofequipment.IINo.Theincreased'flowratehasanegligibleeffectontheASMEClass1,2;&3RWCUpipingdesign.Themodificationcreatesnonewpathwaystotheenvirons.Thepossibilityforanaccidentofadifferenttype,thananypreviouslyevaluatedintheFSARhasnotbeencreatedsincethefunctionalityoftheRWCUSystemandtheRWCULeakDetectionSystemisunchanged.ThemodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttypesincetheoperationallogicandfunctionalityoftheRWCULeakDetectionSystemisunchanged.No.TechnicalSpecification(TechSpec)Section3/4.3.2prescribesthelimitingconditionsforoperationofisolationactuationinstrumentation.TheisolationinstrumentationchannelsshallbeoperablewiththeirtripsetpointssetconsistentwiththevaluesspecifiedinTable3.3.2-2oftheTechSpecs.ThenewTechSpeclimitshaveanegligibleeffectonthelargemarginbetweentheRWCUSystemisolationsetpointandtheflowexpectedduringapostulatedRWCUhighenergylinebreakoutsidecontainment.TechSpec4.4.1.1.2.3providestheacceptancelimitofmaintainingatemperaturedifferentialbetweentheReactorPressureVessel(RPV)bottomheadandthesteamdomepriortostartingofanidlerecirculationloopduringahotstandbycondition.ThismodificationmaintainsthisTechSpectemperaturedifferential.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.k 9S-087DCP,UiThepurposeofthismodificationistomodifyvalveHV-149F008ontheReactorCoreIsolationCoolingSystembyinstallinganewstandardgearset.Installingthenewstandardgearsetprov'dsa1oviesa4/ohigherefficiencyratingwhichresultsinmoreavailabletorqueforvalvestroking,andprovidesagreaterrangeofacceptabletorqueswitchsettingsforthevalve.No.No.Themodificationhasnoimpactonthedynamicqualificationofthe'MotorOperatedValve(MOV)asdiscussedinSection3.9.3.2b.2oftheFSARsincetheactualaccelerationsatthevalveduringadynamiceventarelessthanth'eallowableaccelerations.TheMOYwillcloseuponreceiptofanisolationsignal,Themodificationwillnotaffectthecircuitsignallogic.Installinganewstandardgearsetwillprovidesufficienttorquetoensurethevalvefunctionsduringalldesignconditions.Theabilitytoopenorclosethevalvewhenrequiredisnotaffectedbythemodification.Valveintegrityandseatleakagearenotaffected.Thevalve'spressure'etainingcapabilityismaintainedand'heleakagecharacteristicsareunaffected.ThemodificationdoesnotadverselyimpacttheabilityofHV-149F008toperformitsintendeddesignfunction.,Therefore,themodificationdoesnotincreasetheprobability'ftheoccurrenceortheconsequencesofanaccidentor.malfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR,PConside'ringtheabove,themodificationdoesnotincreasetheprobabilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINq.TechnicalSpecification(TechSpec)bases3/4.6.1.1,3/4.6.1.2,3/4.6.3,3/4.7.3and3/4.3.5werereviewedforthismodification.Thereisnochangetothepressureboundaryortoseatleakagecriteria.Therearenochanges,tothevalvesealincapability.ValveactuationislessthantheTechSpecrequirementsandseatleakageIgcriteriaarenotchanged.PerformanceandoperationoftheReactorCoreIsolationCooling(RCIC)systemandvalveHV-149F008arenotaffectedbythismodification.Nochangeshave'beenmadetothevalveactuationinstrumentationortripsetpoints.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%88DCP,UiThepurposeofthemodificationistomountreplacementcontrollersinawaterproofHoffmanenclosureattachedtothe2C275panelandrouteassociatedinstrumenttubingfromtheexistingpaneltothenewsub-paneltomaintainexistingloopconfigurationintheReactorBuildingHeating,Ventilation;andAirConditioning(HVAC)system.ThiswillmaintainthefunctionaldesignoftheReactorBuildingZone.No.-TheaffectedinstrumentcontrollersdescribedinFSARSection9.4.2havenosafetyrelatedfunction.Nosystemlogicchangesoccurwiththismodification.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Newcontrollersarethemanufacturerssuggestedreplacement.AlsoReactorBuildingHVACsystemdesignparameterswillremainthesame.Themodificationhasnodirectconnectiontoanysafetyrelatedequipmentandwillhavenoeffectonanystructure,system,orcomponentthatperformsasafetyfunction.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Theproposedactiondoesnotinvolvea.precursoroforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.TheproposedchangedoesnotadverselyaffecttheoperationoftheReactorBuildingHVACSystemasmentionedinFSARSection9.4.2.Themodificationcanhavenoeffectontheaccidentsthathaveradiologicalconsequences.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.TechnicalSpecification(TechSpec)3/4.6.5addresseslimitingconditionsforoperationsandsurveillancerequirementsinvolvingsecondarycontainmentintegrity.AlthoughtheStandbyGasTreatmentSystem(SGTS)istheprimarysystemthatmaintainsthisTechSpeccommitmentduringaccidentconditions,theZoneIIExhaustSysteminconjunctionwiththePDC-27581instrumentloopprovides'themeansofsatisfyingthiscommitmentduringnormaloperation.TherelocationofPDC-27581and'thereroutingofassociatedtubingwillnotimpacttheoperabilityoftheZoneIIExhaustSystemsincenofunctionalchangeoccurs.Themodificationdoesnotaffecttheoperationorthedischargecapabilitiesofthe2V205A/BExhaustFans.Therefore,themarginofsafetyasdefinedinTechSpec3/4.6.5isnotreduced.

95489,UTheproposedrevisiontoEO-100/200-102(ReactorPressureVesselControl)givestheoperatortheabilitytoinitiatetheAutomaticDepressurizationSystem(ADS)ifneeded.QlhihSKY'No.FSARSections6.2.1.1.3.1,6.2.1.1.3.3.1.1,and7.3.1.1A.1.4werereviewed.TheproceduralguidanceprovidedinEO-100/200-102'isadequatetopreservecorecooling.The'SARanticipatesmanualcontroloftheADSwhenplantconditionsindicatethatsuchactionswouldbeprudent.Therefore,theimplementationofEO-100/200-102doesnotincreasetheprobabilityorconsequencesofanaccidentormalfunctionofequipmentaspreviouslyevaluatedintheFSAR.IINo.ImplementationofEO-100/200-102conformswiththedesignofSSES.EO-100/200-102imposestighterrestrictionsontheuseoftheADSthanwouldbethecaseiftheADSwasallowedtoinitiateautomatically.Asaresult,thetypeoftransients~associatedwiththeADSactuationsarelesslikely'tooccurinadvertentlyasaresultoftheimplementationofEO-100/200-102.Section7.3.1.1A.1AoftheFSARacknowledgesthatmanualcontroloftheADSisanacceptableoperatingapproach.Therefore,theimplementationofEO-100/200-102doesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyinthe~FSAR.IIINo.EO-100/200-102doesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),'especiallyTechSpec3.5.1.Asmentionedbefore,theguidanceprovidedinEO-100/200-102conformswithSSESdesign.TheuseoftheHighPressureCoolantInjections(HPCI)SystemtomaintaintheReactorPressureVessel(RPY),asoutlinedinEO-100/200-102,willnotproduceSuppressionPoolwaterlevelsinexcessofTech'Speclimitsforeventswhichfallwithintheplantdesign.Inaddition,theuseoftheHPCISysteminthismannerenhancesHPCIreliabilitythroughmoreeffectivecoolingofHPCIlubeoil.Asaresult,theresponsetoanyeventwhichrequireshighpressureRPVmakeupisenhanced.

95%90~L,tl;dTheproposedrevisiontoEO-100/200-104,(SecondaryContainmentControl)decreasestheMaximumNormalOperatingRadiationLevelfrom200mR/hrto100mR/hr.SiUMHhfD'o.FSARSections7.3.1.A.1.4and?.3.1.1A.1.4werereviewedwithrespecttothisprocedurechange.TheimplementationofEO-100/200-104doesnotincreasetheprobabilityorconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.TheactionsspecifiedinthisprocedurepreservethefunctionoftheSecondaryContainmentrelieduponintheFSARsafetyanalysesforthecontrolofradioactivityreleases.TheactionsspecifiedinthisprocedureuseplantequipmentasitwasintendedtobeusedtoensurethatplantHeating,Ventilation,andAirConditioning(HVAC)SystemsarerunningwhentheyshouldberunningandensurethatplantHVACSystemsarenotrunningwhentheyshouldbeisolated.II'o.Consideringtheabove,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyin.theFSAR.IllNo.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.3.2and3/4.11.2.TheimplementationofEO-100/200-104involvesactionsthatuseplantequipmentasitwasintendedtobeused,inamannerthatisconsistentwiththe.FSARAssumptions,andinamannerthatisconsistentwithactionsspecifiedintheTechSpecs 94491TheproposedrevisiontoEO-100-113(Level/PowerControl)givesproceduralguidanceformitigationofAnticipatedTransientWithoutScram(ATWS)events.IINo.FSARSection15.8wasreviewedforthisproposedrevision.AlthoughSection15.8oftheFSARpresentsabriefdiscussionofanATWSevent,thisaccidentisbeyondtheplantdesignbasis.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.EO-100-113isonlyexecutedafteranATWSeventhasoccurred.Theprocedureisonlyexecutedwhentheplantisinaconfigurationthatisbeyondthedesign,basis.Therefore,theproceduredoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.EO-100-113onlyspecifiesoperatoractionsthatwouldbecarriedoutwiththeplantinaconfigurationthatisbeyondthedesignbasis.Therefore,theproceduredoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-092TheproposedrevisiontoEO-100/200-112(RapidDepressurization)hasbeenmadetopreventuncontrolledReactorPressureVessel(RPV)injectionfromlowpressureandintermediatepressuresystemsasthedepressurizationtransientcontinues.No.TheactionsspecifiedinEO-100/200-112use'plantsystemsandcomponentswhoseintendedfunctionistoaccomplishanRPVdepressurization.ImplementationofEO-100/200-112isrequiredonlyafterthetransienthasproceededtothepointthatdepressurizationisneeded.Therefore,theproceduredoesnotincreasetheprobabilityoftheoccurrenceofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.TheresultoftherapidRPVdepressurizationtransientthatwilloccurthroughtheimplementationofEO-100/200-112isadecreaseinReactorCoolantTemperature'andadecreaseinReactorCoolantInventory,bothofwhichhavealreadybeenanalyiedintheFSAR.Therefore,theproposedactiondoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSAR..IIINo.TheproposedactionallowstherapiddepressurizationoftheRPVinamannerthatwillbenomoreseverethanthedepressurizationtransientassociatedwithanAutomaticDepressurizationSystem(ADS)actuation.TheexistingTechnicalSpecification(TechSpec)basis3.5.1.Dacceptsthislevelofseverity.Therefore,themarginofsafetyfortheTechSpecsisnotreducedandboundstheactionproposedinEO-100/200-112.

95%93GDThepurposeofthismodificationistosettheMaximumCombinedFlowLimiter(MCFL)to125%oftheturbineratedflow.Thisallowsallfivebypassvalvestoopenwhendemandedbythepressureregulator.No.FSARSections7.7.1.5,10.2,10.4.1,15:1.3,15;2,1,15.5,and15Awerereviewedforthismodification.ComparedintheanalysisshownintheFSAR,increasingtheMCFLto125%willincreasetherateofreactorvesseldepressurizationduringaPressureRegulatorFailure-Opentransient.Themodificationwillalsoallowmoresteamtoflowthroughthebypassvalvesduringincreasedsteamflowtransients.ThisincreasedsteamflowcanbeaccommodatedbytheReactorPressureVessel(RPV),steampiping,and'ondenserdesignsandwillnotincreasethefrequencyofoccurrenceofanyaccidentanalyzedintheFSAR.,Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesof'anaccidentormalfunctionofequipmentpreviouslyanalyzedintheFSAR.IINo.ThelimitingAnticipatedTransientWithoutScram(ATWS)transientisaMainSteamIsolationValve(MSIV)closure,sotheMCFLsettinghasnoeffect.Thenon-limitingATWSPressureRegulatorFailureOpenwasanalyzedwith125%steamflow,sothistransientwouldbeunaffectedbytheMCFLincrease.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadiffere'nttypethananyevaluatedintheFSAR..IIINo.TechnicalSpecification.(TechSpec)Sections2.0and3/4.2andtheirbaseswerereviewedforthismodification.ConsideringtheevaluationperformedbyNuclearFuelsEngineering,'ncreasingtheMCFLto125%willnotsignificantlyreducethethermalmarginandwillnotviolatetheMCFL.safetylimitforanytransientevent.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%94CPDCP94-9024,Unit2Thepurposeofthismodificationistoaddnewlevelwindsystemsequippedwithananti-rotationbaronboththemonorailauxiliaryhoistandtheframemountedauxiliaryhoistforboththeUnit1andUnit2refuelbridges.Thiswilleliminatethecabledamagecausedbythecable,unravelingfromthedrum.No.FSARSections9.1.4.1,9.1.4.2.7.1,andTable3.2-1werereviewedforthismodification.Themodificationdoesnotchangetheoriginaldesignfunctionofthehoists.Itwillenhancethehoistingoperationbybetterdirectingthecableontothedrumreevesandeliminatebindingpointsinthecableandalsoremovethepossibilityofcabledamagecausedbythespringmountedcablekeepers.'herefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Therefuelingbridgehoistsandtheirsobcomponents,donotserveanysafetyrelatedfunctions.ThemodificationwillalsoconformtoallofthedesignrequirementsspecifiedintheFSAR.Themodificationdoesnotadverselyaffecttheperformance'ofthebridgenoranyotherassociatedequipment.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.Themodificationdoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoff-sitedose..Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportantto'afetyaspreviouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationdoesnotcreatethepossibilityforanaccidentoimalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR."IIIINo.Unit1andUnit2TechnicalSpecification(TechSpec)3/4.9.6providessurveillancerequirementsfortherefuelingbridge/platformtodemonstratethatitisoperablepriortoitsuse.Theproposedmodificationenhancesthehoistsbyimprovingitscabledrumwindingcapabilityanddecreasesthepossibilityofcabledamage.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95C95DCP->>,UiCThepurposeofthismodificationistoreplacetheexistingR-10rectifierwitha90V,50ArectifierforDieselGeneratorsAthroughDandinstalldroppingresistorsforthecathodicprotectionsystemoftheDieselGeneratorAthroughEFuelOilStorageTankArea.Thehighervoltageratingwillboostthecurrentoutputoftheanodesdrivenbytherectifierinordertoimprovethestructure-to-soilpotentiallevels.No.Thecathodicprotectionsystemisanonwafetyrelatedsystemdesignedtoprovidecorrosionprotectionforthedieselfueloilstoragetanksandassociatedpiping.Theprotectionsystemisdesignedtooperatecontinuouslyanditsperformanceismonitoredthroughannualanodecurrentmeasurements.Itdoesnotinterfacewiththecontrol,operationorshutdownofthefueloilstorageequipment.,Theproposedactionwillcorrectdeficienciesinthesystem'topreventgradualdeteriorationofthestorageequipmentduetoineffectivecorrosionprotection.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.Inaccordance.withFSARSection9.5.4.2,thestoragetankexteriorsarepaintedwithenamelorpolyesterresin,wrappedwithafiberglassmat,haveextrathicknessforcorrosionallowance,andarefurnishedwithcathodicprotection.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentoryaaIfunctionof'adifferenttypethanariyevaluatedpreviouslyintheFSAR.IIINo;TheTechnicalSpecifications(TechSpecs)donotapplytothecathodicprotectionsystemforcorrosionprevention.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

9M96DCP,iliThemodificationRillchangethemagneticcircuitbreakersettingand'rovideoverloadheatersfortheDrywellFloorDrainSumpPump.Themodificationisneededtocoordinatewiththenewmotorcharacteristicscausedbythenewpumpassembly.No.ThemodificationdoesnotaffecttheclosureoftheDrywellSumpContainmentIsolationValvesunderaccidentconditions.Also,thismodificationdoesnotaffecttheabilityoftheDrywellLeakageDetectionSystemtosupporttheLeak-Before-BreakDetectionAnalysis.Theabilitytomeasureunidentifieddrywellleakage,asdescribedinFSARSection5.2.5.1.2.4isnotaffectedbythismodification.TheaffectedDrywellSumpPumphasnosafetyrelatedfunction.TheproposedactionprovidesforcontinueddesignbasisoperationofthepumpanddoesnotadverselyaffectthefunctionoftheLiquidRadwasteHandlingSystemortheDryweliLeakageDetectionSystem,'osystemlogicchangesoccur.Therefore,themodification.doesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Changingcircuitbreakermagneticsettingsandoverloadheatersizeswillhavenoimpactonpumpoperation.The.pumpassemblyisthemanufacturer'ssuggestedreplacement,thereforethepumpparameterswillremainthesame.Themodificationhasnodirectconnectiontoanysafetyrelatedequipmentandwillhavenoeffectonanystructure;system,orcomponentthat:performsasafetyfunction.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetyas'reviouslyevaluated'intheFSAR.Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.~Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.IINo.Thenewreplacementpumpas'semblyisdeemedfunctionallyequivalenttotheoriginalequipmentandwillnotresultinanyrisktopublichealthandsafety.Nonewaccidentscenariosormalfunctionsofadifferenttypecanresultbecausenoadverseequipmentorcircuiteffectsarepossible.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThefunctionoftheDrywellLeakageDetectionSystemdescribedinTechnicalSpecification(TechSpec)Section3/4.4.3isnotchangedbypumpassemblyreplacement.Themodification"willprov'idethenecessaryACpowersuppliestomeettherequirementslistedinTechSpecSections3/4.8.3.1and3/4.8.3.2.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95%97DCP94-3025,Unit2Thepurposeofthismodificationistoreinforcetheconnectionofth'esensinglinestotheirlowerstandoffbracketsonUnit2JetPumps¹13and¹14.Thiswillassureanintactsupportpointatthislocation.SUhthlhRY'o.Themodificationimprovesthesecuringofthejetpumpsensinglinesandreducestheprobabilityoffailureqfthesensinglines.ThemodificationwillnotimpairthefunctionnorthestructuralintegrityofthejetpumpdiffuserandassuchtheadditionofsensinglineclampsdoesnotaffecttheabilitytoreloadthecoretothetopofthejetpumpasdiscussedinFSARSection5.4.1.4.Also,thischangedoesnothaveanimpactonthereactorrecirculationsystemmalfunctionsthatposethreatsofdamagetothefuelbarrierthataredescribedandevaluatedinFSARChapter15.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Areviewoftheclampingforce,structuralintegrity,looseparts,andclampmaterialsconfirmedthatthismo'dificationhasnoeffectontheexistingdesignrequirementsofreactorvesselsystemandcomponents.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThemodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpecSection3.4.1.2.Themodificationwillnotaffecttheoperabilityofthejetpump.Thefailureofthesensinglineisnotasafetyproblemsinceitwouldnotaffectjetpumpoperation.

95%98ThepurposeofTP-262-032istocontrolthereplacementofReactorVesselInstrumentationCondensingChamberXY-B21-2D004A.Thereplacementofthischamberis'neededtocorrecttheproblemwiththechamberbeingoutsidethedesigntoleranceforelevation.SUhihlhlK:INo.IFSARSection6.3.1.1statesthattheEmergencyCoreCoolingSystem(ECCS)istoprovideforanyprimarylinebreakuptoandincludingthedoubleendedbreakofthelargestline.Duringthistesttheworsecaseleakwillbetheinstrumentpenetrationplugdislodging,whichislessseverethaneitheraccidentsdescribedintheFSAR.Iftheplugwastodislodge,theoperableA'oopofCoreSprayandResidualHeatRemoval(RHR)willbesufficienttoprovidemakeup.FSARSection9.1.2discussesthepotentialdrainingofthespentfuelpoolthroughfailedfuelpoolgates.Thefuelracksandthecontainedfuelwillremaincoveredwithwater.Suchaneventwouldrequirea'plugtofailwhilethefuelpoolgateswereremoved.FSARSection15.0.3.2.1.1statesthattransientandaccidentscenariosshouldconsideraninitiatingeventcomprisedofoperatorerrororequipmentfailure.Sincetheplugwillnotbesubjectedtoanypressureexceptheadpressurefromcavitylevel,whichwillmaintainthepluginthenozzle,theprobabilityoftheplugfallingintothevesselorcoreisminimal.Theplugswillbetiedoffwithalanyardtopreventtheplugfromfalling.Therefore,theTPdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslydescribedintheFSAR..IINoIIINoTheaccidentsormalfunctionsthatcouldoccurwouldbethefailureofthenozzleplugstocausethedrainingofthereactorvessel/cavityandspentfuelpool.TheseeventsaredescribedinFSARSection6.3.1,15.6,and9.1.2,whichresultsinmaintainingthefuelinthevessel,spentfuelpoolrackscoveredwithwater,evenwithoutmakeup.Sincethecalculatedleakageof55gpmiswellwithintheavailablemakeupcapabilityofLoopAofCoreSprayorRHRortwoloopsofEmergencyServiceWater(ESW)viaUnit2ESW,waterlevelcanbemaintainedat22feetabovetheracksandfuel.Therefore,areactorvessel/draindowneventwithrefuelgatesremovedwouldnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.TechnicalSpecification(TechSpec)3.9.8requiresatleast22feetoverthetopoftheReactorPressureVessel(RPV)flangeduringhandlingofirradiatedfuelassembliesorwhenirradiatedfuelassenibliesareseatedintheRPV,whileinCondition5.TechSpec3.9.9requiresatleast22feetoverirradiatedspentfuelinthefuelpool.ThebasisoftheseTechSpecsistoensurethatsufficientwaterdepthisavailabletoremove99%oftheassumed10%iodinegapactivityreleasedfromtheruptureofanirradiatedfuelassembly.Thisminimumwaterdepthisconsistentwiththeassumptionsofthesafetyanalysis.ThecalculatedleakagethroughtheRPVpenetrations,withnopluginstalled,iswellwithinthemakeupcapabilitiesofthesystemsavailablethereforeensuringminimumwaterlevelismet.Therefore,theTPdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpecs.

95-099Themodificationwilladdthreenewmanuallyoperatedisolationvalvesto'cross-tiepipingtotheCommonRecombinerSkid.Thevalveswillprovidethe'doubleisolationfunctionneededtopreventthemainsteam,off-gas,andhydrogenfromleaking-byintheserviceRecombinerSkidstotheCommonRecombinerSkidwhenitisout-of-service.Theadditionalisolationvalveswill'alsoprovideisolationofMotorOperatedValves(MOVs)forvalvemaintenanceactivities.No.ThemodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheOff-gasRecombinerSystemSkidpiping.Themodificationwiltalsobeutilizingprovendoubleisolationinstallationsandvalvetypesthatcurrentlyexistinsomerecombinercross-tiepiping.ThemodificationwillnotchangethefunctionoftheOff-GasRecombinerSystem.Therefore,themodificationdoesnotincreasetheprobabilityofthe.occurrenceofanyaccidentsdescribedinFSARChapters6and15.TheOff-GasRecombiner.Systemisnotasafetyrelatedsystem.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.FSARSection15.7.1boundsanyfailurethatmayoccurwiththissystem,includingatotalreleaseofradiologicalactivitynormallyprocessedbytheOff&asTreatmentSystembeingdischargeddirectlyintotheTurbineBuilding.Sincethesystemandcomponents.affectedbythismodificationstillcomplywiththeoriginaldesignandconstructioncodes,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR..No.Themodificationenhances.'theabilitytoisolateanout-of-serviceRecombinerSkidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationandpersonnelsafetyhazardsduetohydrogenleaks.Therearenonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesandtherecombinerroomisvacated.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.IIINo.ThemodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs),especiallyTechSpecSections3I4.11.1,3I4.11.2.4and3/4.11,2.6.NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythismodification.Themodificationwillassistinout-of-serviceRecombinerSkidisolationsothatpotentiallyharmful"leak-bys"donotoccur.Therefore,themodificationdoesnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95-100Themodificationwilladdthreenewmanuallyoperatedisolationvalvestocross-tiepipingtotheUnit1RecombinerSkid.Thevalveswillprovidethedoubleisolationfunctionneededtopreventthemainsteam,off-gas,andhydrogenfromleaking-by'ntheserviceRecombinerSkidsto'theUnit1RecombinerSkidwhenitisout~service.TheadditionalisolationvalveswillalsoprovideisolationofMotorOperatedValves(MOVs)forvalvemaintenanceactivities.No.ThemodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheOff-gasRecombinerSystemSkidpiping.Themodificationwillalsobeutilizingprovendoubleisolationinstallationsandvalvetypesthatcurrentlyexistinsomerecombinercross-tiepiping.ThemodificationwillnotchangethefunctionoftheOff-GasRecombinerSystem'.Therefore,themodificationdoesnotincreasetheprobabilityofthe.occurrenceofanyaccidentsdescribedinFSARChapters6and15.TheOff-GasRecombinerSystemisnotasafetyrelatedsystem.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.FSARSection15.7.1boundsanyfailurethatmayoccurwiththissystem,includingatotalreleaseofradiologicalactivitynormallyprocessedbytheOff&asTreatmentSystembeingdischargeddirectlyintotheTurbineBuilding.Sincethesystemandcomponentsaffectedbythismodification-stillcomplywiththeoriginaldesignandconstructioncodes,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR:llNoThemodificationenhancestheabilitytoisolateanout-of-serviceRecombinerSkidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationandpersonnelsafety'hazardsduetohydrogenleaks.Therearenonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesandtherecombinerroomis'acated.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.IIINo.ThemodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs),especiallyTechSpecSections3/4.11.1,3/4.11.2.4and3/4.11,2.6.NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythismodification.Themodificationwillassistinoutwf-serviceRecombinerSkidisolationsothatpotentiallyharmful"leak-bys"donotoccur.Therefore,themodificationdoesnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

0 95-101Themodificationwilladdthreenewmanuallyoperatedisolationvalvestocross-tiepipingtotheUnit2RecombinerSkid.Thevalveswillprovidethedoubleisolationfunctionneededtopreventthemainsteam,off-gas,andhydrogenfromleaking-by'ntheserviceRecombinerSkidstotheUnit2RecombinerSkidwhenitisout-of-service.TheadditionalisolationvalveswillalsoprovideisolationofMotorOperatedValves(MOVs)forvalvemaintenanceactivities.No.Themodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandco'nstructionrequirementsoftheOff-gasRecombiner'SystemSkidpiping.Themodificationwillalsobeutilizingprovendoubleisolationinstallationsandvalvetypesthatcurrentlyexistinsomerecombinercross-tiepiping.ThemodificationwillnotchangethefunctionoftheOff-GasRecombinerSystem.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanyaccidentsdescribedinFSARChapters6and15.TheOff&asRecombinerSystemisnotasafetyrelatedsystem.Therefore,'the.modificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheFSAR.FSARSection15.7.1boundsanyfailurethat.mayoccurwiththissystem,includingatotalreleaseofradiologicalactivitynormallyprocessedbytheOff-GasTreatmentSystembeingdischargeddirectlyintothe-TurbineBuilding.Sincethesystemandcomponentsaffectedbythismodificationstillco'mplywiththeoriginaldesignandconstructioncodes,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportant,tosafetypreviouslyevaluatedintheFSAR.No.Themodificationenhancestheabilitytoisolateanout-of-serviceRecombinerSkidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationandpersonnelsafetyhazardsduetohydrogenleaks.Therearenonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesand'therecombinerroomis,vacated.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.lllNo.ThemodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbythe.TechnicalSpecifications(TechSpecs),especiallyTechSpecSections3/4.11.1,3/4.11'.2.4and3/4.11.2.6.NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythismodification.Themodificationwillassistinout-of-serviceRecombinerSkidisolationsothatpotentiallyharmful"leak-bys"donotoccur.Therefore,themodificationdoesnotreduceanymarginofsafetyasdefinedinthebasisforanyTechSpec.

95-102ThepurposeofthisactionistoapprovetheoperationoftheReactorBuildingChilledWater(RBCW)SystemandClosedCoolingWaterSystem(CCWS)withSodium-24levelsuptoandincluding2E-6pCi/ml.'LINo.Thesodiumlevelsare,controlledbythelimitsonnitriteandconductivitywhiletheneutronfluxisdeterminedbyreactorpower;althoughthefluxseenbythechilledwaterdoesvaryduringthecycle,beingatitsmaximumatthebeginningofthecycle.Thismeansthatthelevelsofactivitywillnotincreasesignificantlyaboveamaximumlevelof1.1E-6pCi/ml.However,dosecalculationsandanadministrativelimithavebeensetat2E-6pCi/ccforNa-24toallowforsomewhathigherlevelsofsodiumandforuncertaintyincalculationofmaximumneutronAux(includingincreaseduetopoweruprate).Theactiondoesnotaffecttheoperationofanysystem,Thedoseconsequences,shouldalloftheactivitycontainedintheRBCWSystembereleasedtotheenvironmentviatheai*ornepathwayis1.57E-7mrem(wholebody)andviathewaterbornepathwayis3.02E-7mrem(wholebody).ThecorrespondingTechnicalSpecification(TechSpec)limitfortheairbornepathwayis7.5mrem/quarterandfortheliquidpathwayis3.0mrem/quarterfor2units.ThedosereleasefromreleaseoftheentireRBCWSystemwouldbethesameshoulditbeusedforcontainmentcooling.Therefore;theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.TheonlypossibleconsequenceofoperatingtheRBCWSystemandChilledWaterSystemwiththelowlevelofNa-24contaminationisthatitwouldgetreleasedtotheenvironmentunmonitored.ThisisnodifferentthanthepotentialunmonitoredreleaseevaluatedinSection15oftheFSAR.Theconsequencesofthispotentialreleasearelessthanthoseanalyzedpreviously,andareofthe,sametype.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentor.malfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.illNo.ThepotentialdoseconsequencesfromthisactionareallwellbelowtheTechSpeclimitof15mrem/yrasoutlinedinTechSpec3.11.2.3b.TheTechSpeclimitsarebasedonnuclidesw/T1/2>Bd.AlsoNa-24hasahalflifeof15hours.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-103ThepurposeofthisactionistoapprovetheoperationoftheReactorBuildingChilledWater(RBCW)SystemandClosedCoolingWaterSystem(CCWS)withSodium-24levelsuptoandincluding2E-6pCi/ml.No.Thesodiumlevelsarecontrolledbythelimitsonnitriteandconductivitywhiletheneutronfiuxisdeterminedbyreactorpower;althoughthefluxseenbythechilledwaterdoesvaryduringthecycle,beingatitsmaximumatthebeginningofthecycle.Thismeansthatthelevelsofactivitywillnotincreasesignificantlyaboveamaximumlevelof1.1E-6pCi/ml.However,dosecalculationsandanadministrativelimithavebeensetat2E-6pCf/ccforNa-24toallowforsomewhathigherlevelsofsodiumandforuncertaintyincalculationofmaximumneutronflux(includingincreaseduetopoweruprate).Theactiondoesnotaffecttheoperationofanysystem.Thedoseconsequences,shouldalloftheactivitycontainedintheRBCWSystembereleasedtotheenvironmentviatheairbornepathwayis1.57E-7mrem(wholebody)andviathewaterbornepathwayis3.02E-7mrem(wholebody).ThecorrespondingTechnicalSpecification(TechSpec)limitfortheairbornepathwayis7.5mrem/quarterandfortheliquidpathwayis3.0mrem/quarterfor2units.ThedosereleasefromreleaseoftheentireRBCWSystemwouldbethesameshouldit~beusedforcontainmentcooling.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.II'o.TheonlypossibleconsequenceofoperatingtheRBCWSystemandChilledWater~SystemwiththelowlevelofNa-24contaminationisthatitwouldgetreleasedtotheenvironmentunmonitored.ThisisnodifferentthanthepotentialunmonitoredreleaseevaluatedinSection15oftheFSAR.Theconsequencesofthispotentialreleasearelessthanthoseanalyzedpreviously,andareofthesametype.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThepotentialdoseconsequencesfromthisactionareallwellbelowtheTechSpeclimitof15mrem/yrasoutlinedinTechSpec3.11.2.3b.TheTechSpeclimitsarebasedonnuclidesw/T1/2)Sd.AlsoNa-24hasahalflifeof15hours.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-104DCP94-9043,Unit2ThepurposeofthismodificationistoprovidethemeanstoresettheUnit2CoolingRefrigerationSystemPanel2C288Aand2C288BtroublesignalsafteraLossofOffsitePower(LOOP).ThiswillbedoneimmediatelyaftertheDieselGeneratorsloadontotheirbuses.Themodificationwillpreventtheinadvertenttrippingof2V222A(B)andlockoutof2K210A(B)forcontactmiscoordinationwithinthe2K210A(B)controlcircuitry.ItwillalsoreturntheCoolingRefrigerationSystemtoitsoriginaldesignwhichistohavethetroublesignalsresetbeforethesystemsarecalle'dupontooperate.No.Thetimingforthestartingandstoppingof2V222A(B)and2K210A(B)bythe2K210A(B)isunaffectedbytheproposedaction.Thetrippingof2K210A(B)bythe2K210A(B)protectivefunctionsareunaffectedbytheproposedaction.ResettingofthetroublesignalsupontheloadingoftheDieselGeneratorsontotheirbusesdoesnotaffectanyboundarytothereleaseofradiation.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.TheproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofequipmentofadifferenttypethananyevaluatedpreviouslyintheFSAR.The.timingfortheinitiationoftheEmergencySwitchgearCoolingSystemisnotchangedbytheproposedaction.Thereisnomalfunctioncausedbytheproposedactionthatcanchangethistiming.Also,thetrippingof2K210A(B)byitsprotectivefunctionsis'unaffectedbytheproposedaction.IIINo.TechnicalSpecification(TechSpec)Section3.8.3.1and3.8.3.2dealwiththeOnsitePowerDistributionSystemthatrequirestheUnit2Class'1E4160VacuumSwitchgearandClass1E480VacuumLoadCenterstobeoperable.TheUnit2EmergencyCoolingSystemisrequiredtomaintaintheSwitchgearRoomtemperaturebelowtheEnvironmentalQualificationtemp'erature.The'proposedactionassuresthattheUnitEmergencyCoolingSystemsareavailableforacontactmiscoordinationinthe2K210A(B)controlcircuitry.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-105DL'>>C,,E,UidThepurposeofthismodificationistoinstallaflowsensortomeasurecoolingtowerblowdownwaterflowdischargetotheSusquehannariver.INo.Themodificationdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccident,anddoesnotchangethe'functionorperformanceoftheliquidradwastesystem.Themodificationincreasesthereliabilityofth'eplantdischargeflowmeasurementsystem,thusreducingthepotentialforfailingtodetectanunplannedradioactivereleasetothepublic.The.modificationdoesnotchangetheI.iquidRadwasteSystem.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.ThemodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.ThenewenclosurefortheCoolingTowerBlowdownCompositeSamplerInterfaceperformsthesamefunctionastheexistingstation.Althoughthesampleistakenfromadifferentlocation,thenewenclosuredesignlimitsthespreadofaspillandadrainlinereturnsthespilltothe'manhole.Thenewstationhassimilarcomponentstothoseintheexistingsystemandanyfailureswouldbesimilar.IIINo.ThemodificationdoesnotreducethemarginofsafetydefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpecSections3.3.7.10,3.11.1.1,3.11.1.2,3.11.1.3,4.3.7.10,4.11.1.1,4.11.1.2,4.11.1.3.1,4.11.1.3.2andTables3.3.7.10-1and4.3.7.10-1.Thenewinstrumentationwillmeasurethetotalwater'flowtotheriver,includingbothcoolingtowerflowsandspraypondoverflow,Thenewinstrumentationwillbemoreaccuratethantheexistingsystem,sincetheexistingsystemmeasuresonlycoolingtowerblowdownflowandignoresthespraypondoverflow.Itwillalsoincreasetheimpliedmarginofsafetyfromtheexistingsystem,basedonmeasurementoftotalflow,includingspraypondoverflow.Also,byincreasingthereliabilityofthesamplingsystem,thereliabilityoftheenvironmentalsamplingprogramwillbeincreased.

DCP94-3006,Unit2ThisDesignChangePackage(DCP)willbeusedastheconfigurationcontrolmechanismforupdatingtherequiredUnit2PowerUpratedrawingsanddocuments.ThereisnophysicalworkassociatedwiththisDCP,No.ThesubjectDCPisusedastheconfigurationcontrolmechanismforupdatingdrawingsanddocumentsassociatedwiththePowerUpratethatarenotpartofaPowerUpratemodificationorsetpointchangepackage.ThisPowerUprateDCPislimitedtodrawinganddocumentupdatesand.thereforedoesnotinvolveanyphysicalwork.Therefore,theDCPdoesnotincrease~theprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheDCPdoesnotauthorizeanyphysicaloroperationalchangestotheplant.'Therefore,theDCPdoesnotcreatethepossibilityofanaccidentormalfunctionofequipmentofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification(TechSpec)changesassociatedwiththePowerUpratehavebeenapprovedbytheNRC.ThisDCPisonlyrequiredtoupdatespecificdesigndrawingsanddocumentsassociatedwiththePowerUprateanddonotinvolveanyTechSpecchanges.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.95-107SEPIdSC)3,UidThepurposeofthismodificationistochangetheCondensateDeminEffluentConductivityA'larmsetpointofO.lpmho/cmto~0.1pmho/cm.ThismodificationwillalsochangetheCondensateDemininletConductivityAlarmsetpointof0.2pmho/cmto60.2pmho/cm,Thiswillallowadjustingtheinstrumentalarmpointstomoreconservativevaluesconsistent"with'plantadministrativeprocedures.No.FSARSection10.4wasreviewedforthismodification.Thechangeonlyaffectsannunciationw'hichwillimproveoperatorresponsetoreactorwaterchemistryexcursions,Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.FSARSection10.4.6providesbasis.forthesetpointvaluesusedtodetermine~compliancewithTable2ofRegulatoryGuide1.56.Theproposedactiondoesnotmodifytheconductivitylimitoraffecttheoperationofanysystemandhasnoeffectonanysafetyrelatedsystem.'Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethanariyevaluatedpreviouslyintheFSAR.III.No.TechnicalSpecification(TechSpec)3.4.4providesbasisandlimitingconditionsofreactorwaterquality.TheloweringoftheCondensate,Feedwater,andReactorWaterConductivityAlarmsetpointsdoesnotchangetheexistinglimitingconditions.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforany.TechSpec.

95-108Thepurposeofthismodificationistoremoveandblankwffaportionofthe2"drainline(JBD-288)downstreamoftheReactorWaterCleanup(RWCU)ASMESectionIIIClassIdrainlineisolationvalves244F029and244FQ30.Themodificationwillalsoplugtheexistingconnectionfromthispipingtothe4'BDLiquidRadioactiveWaste(LRW)CollectionHeaderfeedingtheDrywellEquipmentDrainTank27218.Thiswillstopthevalveseatleakageproblemstherebypreventingfurtherdegradationofthevalves'eatingcapabilities.FSARSection15.6wasreviewedforthismodification.TheadditionoftheblindflangeactstocontainminorleakagepasttheReactorCoolantPressureBoundary(RCPB)isolationvalvesonly.Thechangedoesnotalterthesystemcontents,functions,orboundariesinanymannerthatwould.increasetheradiologicalconsequencesoftheLosmf&oolantAccidentdescribedinFSARSection15.6.5.ThepostulatedfailureofthejBDpipingdoesnotpresentanewmodeoffailureforthelos~coolantaccidentdiscussedabove.ThestresslevelsinthejBD'pipinghavebeendeterminedtomeetthebreakexemptioncriteria.TheeffectofthemodificationismerelytopermitpressurizationofthejBDpipingdownstreamof.theRCPBisolationvalves244F029/030.ThisinnowayaffectsthenormaloperationoftheRWCUortheRCPB.Theproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,as'reviouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationdoesnotincreaseorcreateapossibilityofanaccident'ormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSARIIINo.TheUnit2TechnicalSpecification(TechSpec)limitsapplicableto'theRWCUSystemwithrespecttothismodificationaredescribedinTechSpecSections3/4.4.3and3/4.4.8.Withthenewconfiguration,anyleakagethroughtheboltedflangeconnectionorotherportionofthispipingwouldbecollectedasunidentifiedleakage,andrestrictedtothe5gpmTechSpeclimitorelserequireaunitshutdown.ThemodificationhasnoadverseimpactonthestructuralintegrityoftheASMECodeClass1Componentsnorwillitimpedeanyperiodicinspectionorhydrotestingprocedures.Therefore,themodificationdoesnotreducethemargi'nofsafetyasdefinedinthebasisforanyTechSpec.

95-109Thepurposeofthismodificationistoinstalltubestakesinaccessible'areasofthemaincondenserandinstalltophatbafflesovertheairremovalhoodsoftheupperbundles.Thiswilllimittubevibrationsinaffectedareasofthecondenserandwilldecreasetheoccurrenceoftubefailuresduetovibrationandwillresultinextendedtubelife.INo.ThemodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentevaluatedintheFSAR.FSARSections10.4and15.2.7werereviewedforpreviouslyevaluatedaccidents.Theintentofthetubestakingandinstallationoftophatbafflesistoeliminatevibrationtypetubefailuresintheaffectedareasofthemaincondenser.Thenewself-lockingstakedesignisanimprovementto'previousstakeinstallations,resultinginreducingtheprobabilityoflooseningduringoperation.Themaincondenserisnotsafetyrelatedorrequiredforsafeshutdownofthereactorormitigation'ofadesignbasisaccident.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.TherearenoaccidentsevaluatedintheFSARthatinvolvethecondenserorrequirecondenseroperability.TheonlyaccidentevaluatedintheFSARrelatedtothecondensatesystemislossoffeedwaterand.consequentreductionofprimarycoolantinventory.MitigationofthisaccidentdependsonactuationoftheHighPressureCoolantInjection(HPCI)and/orReactorCoreIsolationCooling(RCIC),Systems,notonthecondensatesystem.Sincelossoffeedwaterduetopumptriphasalreadybeenevaluated,theconsequencesofanaccidentarenotincreased.Useofthecondensertubestakesorbafflesdonotincreasethepotentialforfailureormalfunctionofthecondenserorapumpinthecondensatelfeedwaterstream.Therefore,themodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafety.IINo.Themodificationdoesnotchan'getheoperatingcharacteristicso'rfunctionofthemaincondenserorthecondensate/feedwatersystem.Nootherdifferenttypesofmalfunctionsareidentified.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheTechnicalSpecifications(TechSpecs)reviewedformarginsofsafetyapplicabletothecomponentsandsystemsaffectedbythismodificationareTechSpecSections3.3.7.11,34.4,3.7.8,3.11.2.6,and3.11.2.7.Themodificationdoesnotchangeanyinstrumentation,setpoints,flowratesofnoblegases,generationofhydrogenoroxygen,anddoesnothaveeffectonradioactivegaseouseffluentorcontrolradioactiveleakage.Compatiblematerialsareusedtopreventadverseeffects.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedintheTechSpecs.

95-110C3-ThepurposeofthismodificationistoinstalllargerspringsineightfiredamperslocatedintheControlStructure.Thiswillensurethatthefiredampersfullycloseduringafire.INoFFSARSections9.4,9.5,9.5.1.1.1.6,15.0,15.6,an'd15.7werereviewedforthismodification.ItwasdeterminedthatthecomponentswithintheControlRoomFloorCooling,ComputerRoomFloorCooling,andFireProtectionSystemsdonotcauseorinitiateanyoftheaccidentsoreventsdescribed,Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentaspreviouslyevaluatedintheFSAR.AreviewofFSARSections15.6and15.7revealedthatfiredampersintheControlStructureductworkingeneralarenotreliedupontomitigateanyplantaccidentsanalyzedintheFSAR.Themodificationisdesignedtoenhancethecapabilityofthedamperstoclosefora.fireconditionwithoutdegradingthesafetyfunctionofthedamperthatistoremainopentoensure.thecontinuedoperationoftheControlRoomFloorCoolingandComputerRoomFloorCoolingSystems.Therefore,themodificationdoes,notincreasetheconsequen'cesofanaccidentaspreviouslyevaluatedintheFSAR.Themodificationdoesnotreducethefireresistancecapabilityofthefiredampers.Themodificationensuresfullclosure'fthedampers.Itwillincreasethefiredamperscapabilitytofunctionas3hourratedfirebarriersinaccordancewiththeoriginaldesignintent.Thenewspringsare.designed,manufactured,andqualifiedtothesameULstandardsastheoriginalsprings.Therefore,themodificationdoesnotincreasethe'robabilityoftheoccurrenceoramaffun'ctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.TheinstallationofthenewspringsdoesnotimpacttheoperationorperformanceofanyoftheequipmentintheControlRoomCoolingandtheComputerRoomFloorCoolingSystems.Th'erefore,themodificationdoesnotincreasethe'consequencesofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Nonewoperatingmodesarecreatedforanysystem.Theuseofthesamestandardsastheoriginalspringsfordesign,material,andqualificationensuresthefunctionandintegrityofthefiredamperstoperformasfirebarrierswithafireresistanceratingequivalenttotheoriginals.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheTechnicalSpecification(TechSpec)'asesreviewedformarginsofsafetyapplicabletotheequipmentaffectedbythismodificationwere3/4.3.7,3/4.3.7.9,3/4.7.2,and3/4.7.7.Consideringtheabove,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforariyTechSpec.

ThepurposeofthismodificationistomodifytheRodPositionInformationSystem(RPIS)logictoindicateFull-InifanyoneofswitchesSOD,S51,orS52areclosed.ThiswilleliminatethetemporarylossoftheFull-InindicationduringareactorSCRAMornormaldrive.action.INo.FSARSection15.4providestheaccident"analysesforreactivityandpowerdistributionanomalies.TheReactorManualControlSystem(RMCS)hasnosafetyfunctionasstatedinFSARSection7.7.1.2.1.TheRMCS'doesnotincludeanyofthecircuitryordevicesusedtoautomaticallyormanuallySCRAMthereactor.AchangetotheRodPositionInformationSystem(RPIS)logicchangewillhavenoimpactonthefunctionalrequirementsoftheControlRodDrive(CRD)Systemoronitsabilitytocontrolcorereactivitybecausenocircuitinterconnectionoccurs.Noimpactoccurstotheshutdownmarginnortoreactivitycontrol.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurr'enceofanaccidentpreviouslyevaluatedintheFSAR.Themodificationdoesnotaffectanystructure,system,orcomponentinperformingitssafetyfunction,andwillpreventinappropriateoperatoractions.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR,Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.TheproposedchangedoesnotadverselyaffecttheoperationoftheCRDSystemasdelineatedinFSARSection4.6.1noronthereactivityregulationfunctionasmentionedinFSARSection4.1.3.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Thechangewillnotresultinanyrisktopublichealthorsafety.Thechangedoesnotcreateanynew'ailuremodesormechanismsfortheassociatedcircuitry.Theproposedactiondoesnot.changeanyfunctionthatexistedpreviously.Themodificationwillnotaltertheabovementioneddesignbasis.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo.TheLimitingConditionsofOperation(LCOs)andsurveillancerequirementsconcerningcontrolrod,androdpositionindication,arereferencedinTechnicalSpecification(TechSpec)3/4.1.3.Theproposedchangeswillhavenoadv'erseaffectontheshutdownmarginwhichensuresthat:1)thereactorcanbemadesub-criticalfromalloperatingconditions,2)thereactivitytransientsassociatedwithpostulatedaccidentconditionsarecontrollablewithinacceptablelimits,and3)thereactorwillbemaintainedsufficientlysuWriticaltoprecludeinadvertentcriticalityintheshutdowncondition.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-112ThepurposeofthismodificationistomodifytheRodPositionInformationSystem(RPIS)logictoindicateFull-In"ifanyoneofswitchesSOO,S51,orS52areclosed.ThiswilleliminatethetemporarylossoftheFull-In"indicationduringareactorSCRAMornormaldriveaction.No.IINo.FSARSection15.4providestheaccidentanalysesforreactivityandpowerdistributionanomalies.TheReactorManualControlSystem(RMCS)hasnosafetyfunctionasstatedinFSARSection7.7.1.2.1.TheRMCSdoesnotincludeanyofthecircuitryordevicesusedtoautomaticallyormanuallySCRAMthereactor.AchangetotheRodPositionInformationSystem(RPIS)logicchangewillhavenoimpactonthefunctionalrequirementsoftheControlRodDrive(CRD)Systemoronitsabilitytocontrolcorereactivitybecausenocircuitinterconnectionoccurs.,Noimpactoccurstotheshutdownmarginnortoreactivitycontrol.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentpreviouslyevaluatedintheFSAR.Themodificationdoesnotaffectanystructure,system,orcomponentinperformingitssafetyfunction,andwillpreventinappropriateoperatoractions.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.Theproposedactiondoesnotinvolveaprecursor.oforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.TheproposedchangedoesnotadverselyaffecttheoperationoftheCRDSystemasdelineatedinFSARSection4.6.1noronthereactivityregulationfunctionasmentionedinFSARSection4.1.3.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.PThechangewillnotresultinanyrisktopublichealthorsafety.Thechangedoesnotcreateanynetfailuremodesormechanismsfortheassociatedcircuitry.Theproposedactiondoesnotchangeanyfunctionthatexistedpreviously.Themodificationwillnotaltertheabovementioneddesignbasis.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedintheFSAR.IIINo.TheLimitingConditionsofOperation(LCOs)andsurveillancerequirementsconcerningcontrolrod,androdpositionindication,arereferencedinTechnicalSpecification(TechSpec)3/4.1.3.Theproposedchangeswillhavenoadverseaffectontheshutdownmarginwhichensuresthat:1)thereactorcanbemadesub-criticalfromalloperatingconditions,2)thereactivitytransientsassociatedwithpostulatedaccidentconditionsarecontrollablewithinacceptablelimits,and3)thereactorwillbemaintainedsufficientlysuWriticaltoprecludeinadvertentcriticalityintheshutdowncondition.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

,U>>dThepurposeofthisnewprocedureistoaddresstheacceptabilityofmaintai'ningtheSSESfuelpoolscrosstiedthroughthecaskstoragepitduringnonrefuelingandrefuelingoutageperiods.INo.DraindownconsequencesthroughtheevaluatedpathsareboundedbytheconsequencesofthegatesealleakaddressedinFSARSection9.1.2.2.Pooldraindownviathefuel.poolgatesealshasbeenaddressedintheFSAR.Draindownviathefourlinesevaluatedhereintotheminimumlevelisnotdeemedcrediblegiventhemultiplebarriers,.seismicdesign,numerousdiverseandredundantlevelalarms,andthealarmresponseprocedures.Theprobabilityofpoolboilingisdecreasedbythischangeandtheprobabilityofpooldraindowninthecrosstiedpoolconfigurationissufficientlylow.Therefore,theproceduredoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofan'ccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.TheFSARdiscussesdraindowninSection9.1.2.2.Itdeterminesthatintheunlikelyeventofapoolgatesealfailure,thatthefuelwouldremaincovered.Theworstcasegatesealfailurewoulddraintoanelevationlowerthanthedrainelevationofthesubjectlines.Theeffectoflosingpoolinventorythroughafailedgatesealisnoworsethanlosingpoolinventorythroughoneofthesubjectlines.Therefore,theproceduredoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification(TechSpec),especiallyTechSpec3/4.9.9.Theimplementationofthisproceduredoesnotimpacttheabilitytomaintainfuelpoolwaterinventory.Anydecreaseinlevelcausedbythisleakagewillbedetectedandalarmedlocallyandinthecontrolroomsothatpromptactionscanbetaken.Alarmresponseproceduresandoffnormalproceduresinstructthatmakeupbeprovidedandactionsbetakentoisolatetheleak.

95-114ThepurposeofthemodificationistoimplementtheoperatoractionsrequiredtopreventdeficientUltimateHeatSink(UHS)SprayCoolingconditionsandtoreturnthespraypondadministrativetemperatureandalarmlimitstothoseconsistentwiththe88FTechnicalSpecification(TechSpec)limit.ThiswillensurethatthespraynozzlepressuresarehighenoughtoeffectivelycoottheResidualHeatRemovalServiceWater(RHRSW)/EmergencyServiceWater(ESW)waterandmaintaintheUHSmaximumtemperaturedesignlimitof97F.INo.FSARSections6.2,7.1,7.3,8.3,9.2.5,9.2.6,9.2.7,and15.6.5werereviewedforthismodification.ThemodificationhasnoadverseeffectonthesafetyfunctionsoftheESW,RHRSW,andUHS.systemsandcomponents.Theradiologicalconsequencesofrelevantpostulatedaccidentsarenotaffected.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofamalfunctionofequipmentimportanttosafetyasevaluatedinthe~FSAR,IINo.ThemodificationdoesnotintroducefailuremodesnotconsideredintheFSARsinceitdoesnotcreateapossibilityforfailure-ofmorethanoneloopofESW/RHRSW/UHS.Therefore,themodificationdoesnotcreateapossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III'No.Thebasesforthecontainmentdepressurization,ResidualHeatRemovalServiceWater,EmergencyServiceWater,andUltimateHeatSinkSystemswerereviewedinTechSpecs3/4.6,2,and3/4.7.1.ThebasesfortheContainmentDepressurizationSystemTechSpecs,suchas.SuppressionPooltemperatureandvolum'e,aretakenintoconsiderationinthecontainmentsafetyanalyses.SincetheRHRHX'sperformanceassumedinthecontainmentsafetyanalyseshasbeenshowntobeboundingatthereducedRHRSWflowrate,thismodificationhasnoeffectonthecontainmentdepressurizationsafetymar'ginsdefinedintheTechSpecforthissystem.Consideringthisandtheabove,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.I'95-115SCPj942036,Units1and2Theproposedactionrestoresthespraypondhightemperaturealartn'setpointto85'from82'.Thiswillreduce.thelikelihoodofexperiencing'nuisancealarmsandallowplantoperationstotakecompensatoryactionstherebykeepingspraypondtemperaturebelowthesprayponddesignlimit(97')andtheTechnicalSpecification(TechSpec)limit(88').KIJbbdhfE:INo.NoFSARwnaiyzedaccidentormalfunctionreliesonthespraypondhightemperaturealarmfortheinitiationofmitigatingactions.Thisalarm,oritsfailurecannotcausean'yFSARaccidentormalfunction.Changingthealarmsetpointtoaslightlyhighervalueprovidestheoperatorwithinformationthattheoperatorcanactupontoreducespraypondtemperaturewhilestillensuringthatthesprayponddesigntemperatureisnotexceededevenunderworst-casemeteorologicalconditions.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesof,anaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedinthe'FSAR.EIINo.TherestorationoftheSprayPondHighTemperatureAlarmsetpointto85'from82'onlyaffectsthepondtemperatureatwhichthisalarmisreceived.Therearenoautomaticactionsassociatedwiththereceiptofthealarm.Therefore,themodificationdoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechSpec3.4.7.1addressesspraypondparameters.Restoringthehightemperaturealarmsetpointto85'from82'returnsthesetpointtothepreviousvalue.Previousexperiencehasshownthatthe85'alarmsetpointprovidessufficientmargintoensurethattheTechSpeclimit(88')isnotexceeded.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

ThissafetyevaluationisintendedtodemonstratethatthedifferencebetweenwideandnarrowrangelevelinstrumentationobservedduringnormaloperationandUnit2powerascensiontestingissafeanddoesnotconstituteanunreviewedsafetyquestion.INo.Thechangeinthepointatwhichtheaffectedequipmentactuate'sdoesnotinanywaychangetheprobabilityoftheoccurrenceofanaccidentnordoesitaffecttheprobabilityofthemalfunctionofthatequipment.Thepotentialeffectonoperatoractions,andthepotentialforincorrectactionsasaresultofmisleadinginformationhasnoadverseimpact.Theeffectonthevesselnozzlesisacceptablebecausetheincreaseintheprobabilityofinjectionsdoesnotchangetheseverityoreffectoftheinjections.Therefore,theproposedactiondoesnotincreasetheprobabilityofthe'ccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyasprev'iouslyevaluatedintheFSAR.IINo.Theproposedchangedoe'snotchangethewayinwhichanyoftheequipmentworksnordoesitchangethesequenceinwhichtheequipmentwillfunction.Itjustchangesthepointatwhichtheequipmentwillfunction.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.~IIINo.Thechange,incertaininstances,resultsinactuationoccurringatavessellevelgreaterthanthatassumedinthecalculationsthatresultedintheexistingTechnicalSpecifications(TechSpecs).ThesebasesandtheirassociatedTechSpecsareconfiguredtoassurethatth'ecoreremainsadequatelycooled.Duetotheflowvelocitylevelerrorthereisactuallyahigherwaterlevelthandetectedbytheequipment.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasesforanyTechSpec.

95-117ThepurposeofthismodificationistoreplacethecurrentLowPressureCoolantInjection(LPCI)OutboardThrottleValvesHV-151F017A(B)andHV-251F017A(B),theOpeningLogicSeal-InTimeDelayRelayE111A-K45A(B)withnewtimedelayrelaysandreducethecurrent5minutetimedelaysettingtoapproximately45seconds.Thismodificationwillallowtheoperators,totheextentpossible,themaximumflexibilitytorespondtoabroadspectrumofaccidentandtransientevents.No.FSARSections15.1.6,15.2.9,15.6.2,15.6.4,15.6.5,6.3,15.2.8,15.6.6,15.7.1,and15.8werereviewedforthismodification.ThemodificationenhancestheoperatingflexibilitytocopewiththespectrumofaccidentandtransienteventspostulatedfortheResidualHeatRemoval(RHR)System.ThemodificationdoesnotaffecttheShutdownCoolingmodeoftheRHRanddoesnotaltertheRHRSysteminstrumentationandcontrolfunctions.TheavailablevoltagetotheRHRRelayVerticalPanelisnot'reducedwiththismodification.Also,themodificationdoesnotaffecttheLPCIOutboardThrottleValvesmentionedabove.Therefore,'hemodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportantto'safetyas.previouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification(TechSpec)bases'3/4.3.3,3/44.9,3/4.5.1,3/4.5.2,3/4.6.2,3/4.8.2,and3/4.9.11werereviewedforthismodification.TheRHR.Systems~initiationlogicisnotaffectedbythismodification.ThemodificationdoesnotaffecttheRHRShutdownCoolingmodeofoperation.Consideringthisandthestatementsabove,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-118Thepurposeofthismodificationistoremovetheexisting,WetPipeSprinklerAlarmValvePressureSafetyValves(PSV),andifinstalled,itsassociatedPSVisolationvalvesandPSYlinestrainers.ThemodificationwillalsoreplacetheAlarmValveBypassCheckValveswithBypassCheckValvescontaininganorificeinthevalvedisk.ThiswilleliminatetheproblemwithFireProtectionWaterweepingfromthePSVvalvestothefloordrainsystem.No.TheabilityofthewetpipesprinklerfireprotectionsystemstoprovideprotectionoftheSafeShutdown(SSD)equipmenthasnotbeenaltered.ThefunctionandoperationoftheWetPipeSprinklerFireProtection-Systemtoprowdefiresuppressiontotheaffectedareashasnotbeenaltered.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceofanaccidentevaluatedintheFSAR.TheWetPipeSprinklerFireProtectionSystemdoesnotprovideanydirectsafetyfunctionnordoesitinterfacewithequipmentimportanttosafety.Therefore,'hemodificationdoesnotincreasetheprobabilityoftheoccurrenceorconsequencesofamalfunctionorequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.TherearenoaccidentsevaluatedintheFSARthatarerelatedtotheWetPipeSprinklerFireProtectionSystem.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentaspreviously.evaluatedintheFSAR.IINo.AreviewoftheFSAR,SER,andFPRRSections.revealedthattherearenonewaccidentsormalfunctionsofequipmentimportanttosafetycreatedby.thesemodifications.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR..IIINo.TechnicalSpecification(TechSpec)Section3/4.7.6wasreviewedforthismodification.Theaffected.WetPipeSprinklerFireProtectionSystemcomponentsdonotprovideprotectionforareascontainingsafetyrelatedequipment.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisfoianyTechSpec.

95-119ThepurposeofthismodificationistoaddanewContainmentRadiationMonitor(CRM)andWetwellSampleSystemwithseparatecontainmentsamplelinesthatwillreplacetheexistingCRMs.ThenewCRMandWetwellSampleSystemwillsignificantlyreducethemaintenanceeffortrequiredto'keeptheCRMsoperable,eliminateoperationalproblemscausedbythedegradedconditionoftheexistingCRMSystemandtoprovidearepresentativecontainmentairsampletothenewCRMswithinacceptableplateoutlimits.INo.'IFSARChapters6and5werereviewedforthismodification.TheCRMsareonlyaninformationalsystemthatisnotimportanttosafety.TheCRMsdonotgenerateanysignalsusedforanySafetySystemsactuation.ThesamplepumpsinthenewCRMsareadifferentdesignwithoperatingconditionsthatarelessdemandingsothatoilcontaminationofthenewcontainmentsamplelineswillnotoccur.ThenewCRMandWetwellSampleRackcontainmentisolationvalvesandallofthecomponentsthatcomprisethevalve'controlcircuitryincludingtheaccidentsignalandthepositionindicationcircuitryareallqualifieddevjces.ThenewCRMsareClass1EelectricalequipmentandarequalifiedtomeetR.G.1A5.However,theyarenotenvironmentallyqualified.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheCRMSamplePanels,CRMLocalControlPanels,CRMRemoteControl,andIndicationInserts,thenewnitrogenbottleracks,thenewrelaypanels,andthenewlocalcomponentboxesaremounted/anchoredinaccordancewiththedynamicallytestedand/oranalyzedconfigurationforthesubjectequipment:ThesamplepipingtotheCRMSamplePanelsandWetwellSampleRackisinstalledinaccordancewithSpecificationM-1041.Routingandinstallationofthe'nitrogenpurgelinescomplywithSpecificationG-1006.Routingandinstallationofraceway,terminalboxes,andjunctionboxesareinaccordancewithSpecificationC-1035:Installationofthecablesandtheterminationofcablesandinternalpanelwiringisinaccordancewithexistingapprovedcableinstallationandterminationprocedures.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification(TechSpec)Sections3/4A.3,3/4A.3.2,3/4.6.3andTable3.6.3-1werereviewedforthismodification.ThenewCRMsprovidethemonitoringanddetectionoftheairborneparticulateradioactivityandthe'airbornegaseousradioactivityassociatedwithsystemleakage.TheproposedactiondoesnotaffecttheoperabilityrequirementsorsurveillancerequirementsoftheCRMs.ThenewCRMand,WetwellSampleRacksamplelineisolationvalvesaresolenoidvalvesthatcloseimmediatelyonanaccidentsignal.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-120DCP-,~CP->>,dC-.IIThepurposeofthemodificationistoinstall2"stainlesssteelshapedportballvalvestoreplacethefullportvalvesintheEmergencyServiceWater(ESW)System.Themodificationwillalsoinstallaspacerringbetweenthedownstreamendof.thenewvalveandtheadjacentflange.Themodificationwillassurethatthecoolingcoilswillperformtheiroriginaldesignfunction.INo.FSARSections3.6,6.2,6.3,9.2.5,9.4.2.2.2,andTable3.2-1werereviewedforthismodification.'heinstallationoftheV-portballvalvesdoesnotadverselyaffecttheoverallperformanceandoperabilityoftheESWSystem,TheexistingESWSystempipingandpipesupportshavebeenanalyzedtoconfirmthattheadditionalweightofthenewvalveassemblieswillnotover-stressthepipingduringaseismicevent.ThemodificationwillcomplywiththeESWSystemdesignandperformancerequirements.ThemodificationwillsatisfyNUREG%776requirementsforESWSystemredundancy;physicalseparation,andaccessibility.Sincethereplacementcontrolvalvesarespecificallydesignedforthethrottlingservice,thesemodificationsprovideincreasedassurancethattheaffectedequipmentwillperformit'sintendedsafetyfunctionunderaccidentconditions,.ThereplacementvalvesandESW,pipingconfigurationsatisfyalltheASMECodeand.seismicdesigncriteriaestablishedinSection9.2,5andTable3.2-1oftheFSAR.Noneofthepostulatedfailuremodesfortheequipmentaffectedbythesemodificationsis.morelikelytooccurwiththereplacementvalvesthanwiththeoriginalorthe,temporaryvalves.Therefore,themodificationdoesnotincreasethepossibilityofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.~Consideringtheabove,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.illNo.Unit2TechnicalSpecification(TechSpec)Section3.7.1.2requiresoperabilityoftheESWSystem,includinganoperableflowpathfromthespraypondtothesystemheatexchangers.ThevalvereplacementmodificationsaredesignedtoimprovethereliabilityofESWflowtothepumproomunitcoolersandtherebyassurethattheflowpathoperabilityismaintained.Therefore,themodificationdoesnotreducethemarginofsafetyasdescribedinthebasisforanyTechSpec.

95-121ThepurposeofTP-145%11istodeterminetheaccuracyoftheUnit1'feedw'aterflowelementsandtheattachedFeedwaterFlowinstrumentation.BlkRKE:INo.II'o.Thetemporaryequipmentusedtoperformthistestwillnotaffectanycontrollogicorcontrolroomindication.Theonlyaffectontheplantwilloccurifthetubingtothetemporaryequipmentdevelopsaleak.Thetemporaryequipmentwillhaveisolationvalvesinstalledwiththetemporarytubing.Also,therootvalvesatthefeedwaterpipingcanbeisolated.Theeffectsoftheleakwillbethesameasaleakonpermanentfeedwaterpipingandinstrumentationandthereforeisbouridedbypreviouslyevaluatedevents.TheReactorFeedPumps(RFPs)willbeoperatedwithintheboundsofexistingoperatingproceduresduringthistestprocedure.Therefore,withoneRFPinmanualmode,anytransientwillbeboundedbyexistinganalyses.Thetestprocedureallows.theoperatortoreturntheRFPtoautomatic.controlatanytimethatisdeemednecessary.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.FSARSections5.2.3.2.2,7.7.1.4.1.2,?.?.2.4.2,15.1.2,and15.2.7werereviewedforthismodification.Feedwatercontrolisanon+systemwithnoseismicrequirements,EQrequirements,ordivisionalrequirements.Thetubingusedinthisprocedurewillbeassembledandhydrotestedto2500psigpriortohook-uptoplant'iping.Thesteeltubingwillbeassembledtomeetthermalexpansionconsiderations.Theexistinginstrumentsandtubingwillnotbemodifiedorfunctionallyimpactedbytheinstallationofthistemporarytubing.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecificationBases3/4.4.4,3/4.4.5andSection3.3.2werereviewedforthisprocedure.Thepermanentfeedwater'lowtransmitterswillcontinuetoprovidealloftherequiredfunctions,includinginputtothecorethermalpowerheatbalancethroughouttheperiodoftimethatthistechnicalprocedurewillberun.IncreasesintheMainSteamLineradiationlevelsduetoN'ndC'"areinsignificant.Therefore,thistestwillnotcauseandwillnotpreventavalidMainSte'amLineIsolationonHighRadiationasdescribedinTechSpecSection3.3.2.There'fore,themodificationdoesnotreducethemarginofsafetyasdefinedintheBasesforanyTechSpec.

95-122Thepurposeofthismodificationistoallowforathermalpowerincreaseof3441MWthermalspeedsuptoandincluding1515rpm.Thisactionisbeingdoneinlightoftherecentobservedvibrationphenomena,experiencedwhileReactorRecirculationPump(RRP)speedswereintherangeof1570-1584.No.TheproposedactionsarewithinthosepreviouslyanalyzedbyPPKLandareNRCapprovedviaLicenseAmendment103toNPF-22.TheoperatinglimitationsaremorerestrictiveasproposedherethanthoseintheAmendmentanditssupportinganalysisreports.Transientsarepredictedtoexceedtheproposedlimitbuthavebeenevaluatedtobeofsuchshortdurationthatevenifthevibrationphenomenonistriggered,noconsequencesfromthevibrationwillbe.encountered.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentto'safetyaspreviouslyevaluatedintheFSAR..IINo.Theonlypotentialunacceptableeffectsoftheobservedvibrationphenomenawouldbepipecracking/breaksorReactorVesselinternalcracking.Thevesselinternalshavebeenanalyzedpriortoand,aftertheeventsandarenotsusceptibletodamageevenifvibrationsweretooccur.Thepipecrackingwhilejudgednottobeaconcern,isnotassumedforthefullrangeafLossofCoolantAccident(LOCA)analysis.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.HUIIINo.Analysisperformedhasshownthatoperationintheproposedregionisfullyjustifiableandtheproposedlimitwillpreventonsetofvibration.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

e 95-123OCP>>.IiiThepurposeofthemodificationisto'addthree2"$drainlinesatlowpointsintheStandbyGasTreatmentSystem(SGTS)ductworkontheSouthsideoftheUnit1ReactorBuilding.ThiswilleliminatethemoisturegeneratedbytheboilingSpentFuelPool(SFP)whichcondensesandcollectsintheRecirculationPlenumandSGTSductwork.!illhSLKLNo.Themodificationdoesnotimposeanyunanalyzedloadsontheductworkorinterfacingstructures.Theductdrainlinesandtheirassociatedcomponentsaredesignedtpmaintaintheirpressureretainingcapabilityduringdynamicloads,maximumpressuresandtemperaturesanticipatedduringaccidentconditions.Theinstalleddrainsanditsassociated.pipingcomponentsmeetthesameseismicanddynamicqualificationsastheSGTSductworkandthereforewillnotaffectthestructuralintegrityoftheSGTSductwork.ThemodificationimprovesthecapabilityoftheStandbyGasTreatmentSystemtoperformit'sintendedsafety.functionduringthepostulatedSFPboilingevent.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.No.Consideringtheabove,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.No.ThemodificationdoesnotaltertheSGTSoperationandensuresthatsufficientiodineremovalcapabilitybeavailableduringaLossofCoolantAccident(LOCA),asdefinedinTechnicalSpecification(TechSpec)3/4.6.5.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-124Thepurposeofthemodificationistoreplacesixindicatorsonthecontrolroompanel1C651oftheElectro-HydraulicControl(EHC)System.Theindicatorswillhavee'xpandedrangesthatwilleliminatetheproblemwiththemreadingnearthetopoftheirscales.Also,DiodeFunctionGenerator(DFG)cards(locatedinEHCcabinet1C663cardrackB)mustberecalibratedwiththismodification.No.TheEHCTurbineControlSystem'sdescribedinFSARSections10.2.1and10.2.2.5.Theindicatorrep'lacementportionofthismodificationmerelychangesthescalerange.Allphysicalandelectricalcharacteristicsareidentical.TheremainingrecalibrationoftheEHCMainTurbineControlequipmentresultsinasmallchangeinTurbineControlValve(TCV)positioning,butthesequencingoftheTCV'sremainsthesame.Themodificationdoesnotinvolvetheadditionofequipmentorchangesinthetypeofexistingequipment.Thei'ndicatorreplacementportionofthismodificationmerelychangesthescalerange.Allphysicalandelectricalcharacteristicsareidentical.TheremainingrecalibrationoftheEHCequipmentiswithintherangeoftheinstrumentsandinterfaceswithotherequipmentareunchanged.TheEHCequipmenthasnofunctionrelatedtocontrollingthe.releaseofradioactivityafteranaccidentnordoesitaffectanyequipmentthatdoes.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.Consideringtheabove,themodificationdoesnotcreatethepossibilityforan~accidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.lllNo.FunctionsperformedbytheequipmentwithinthescopeofthismodificationarenotmentionedintheTechnicalSpecifications(TechSpecs).Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpecs.

95-125DCP93-30448,Unit1ThepurposeofthemodificationistoaddasecondSteamLineResonanceCompensator(SRLC)cardtoboththeprimaryandsecondarypressuresensingloops.ThenewcardswillbepartoftheElectro-HydraulicControl(EHC)System.ThismodificationisrequiredtoaccommodatetheincreasedgeneratingcapacityimplementedbytheSSESPowerUprateProject.INo.FSARSections6and15werereviewedforthismodification.ThefunctionofthesensingloopintheEHCSystemanditsinterfacewithotherequipmentisunchanged.TheEHCpressuresignalhasnoimpactonthelimitingconditionsmentionedinChapter15oftheFSAR.TheEHCequipmenthasnofunctionrelatedtocontrollingthereleaseofradioactivity.afteranaccidentnordoesitaffectanyequipmentthatdoes.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspre'viouslyevaluatedintheFSAR.P'lNo.Themodificationdoesno'tcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.ThepossiblefailuremodesoftheEHCequipmentanditsinterfaceswithotherequipmentareunchanged.IIINo.TheEHCSystemandfunctionsperformedbytheequipmentwithinthescopeofthismodificationarenotmentionedintheTechnicalSpecifications(TechSpecs).Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpecs.

95-126ThesemodificationsrequirethattheflowtransmittersandpressuretransmitterswithintheReactorRecirculationSystem(DCP93-3085A)andFeedwaterSystem(QCP93-30858)havetheirloopsspannedandindicatorsscaled.ThepurposeofthisistoensurethattheflowtransmittersandpressuretransmitterscoincidewiththePowerUprate.INo.ThismodificationdoesnotincreasetheprobabilityofoccurrenceofanyaccidentevaluatedintheFSAR.ThisDCPdoesnotinvolvetheadditionofequipmentorchangesinthetypeofexistingequipment.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment.Thenewprocessconditionsarewithintherangeoftheinstrumentsandinterfacewithotherequipmentisunchanged,TheRecirculationFlowControlSystemflowinstrumentationanditsoperationandfunctionsarenotchangedbythismodification.Therefore,themodificationdoesnotincreasetheconsequencesofanaccident,nordoesitincreasetheconsequencesofamalfunctionofequipment.ThismodificationdoesnotincreasetheprobabilityofoccurrenceofanyaccidentevaluatedintheFSAR.Thetransmitteriscalibratedto10'loofitspublishedspecificationupperrangelimit.Thisextensionbeyonditsnormalrangeiswithinitscapabilitiesbydesign.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment.ThePowerUprateconditionsarewithinthecapabilitiesoftheinstrumentandinterfacewithotherequipmentisunchanged.Thismodificationdoesnotincreasetheconsequencesof'amalfunctionofequipmentsincetherearenosystemoperationsorfunctionschangedbythismodification.IINo.ThesemodificationsdonotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedintheFSARbecausethespanningandre-scalingoftheRecirculationFlowControlSystemflowinstrumentsmerelychangescalibrationandscalerange,allphysicalandelectricalcharacteristicsareidentical.Sincethereisnoequipmentchangeinvolvedotherthanindicatorscales,thesemodificationsdonotcreatethepossibilityofamalfunctionofequipmentofadifferenttypethananyevaluatedintheFSAR.IIINo.ReviewoftheTechnicalSpecifications(TechSpecs)showsthatthefunctionsperformedbytheequipmentwithinthescopeofthesemodificationsarenotmentionedintheTechSpecs.Therefore,themodificationsdonotreducethemarginofsafetyasdefinedbythebasisforanyTechSpec.

95-127Thepurposeofthemodificationistoinstallnew1"manualballvalvesbetweentheInstrumentAir(I/A)headersandsolenoidvalvesSV-18742(ReactorBuildingChilledWater(RBCW)Zone1)andSY<8965(RadwasteBuildingChilledWater(RWCW))toprovidelocalizedisolationcapabilitiesbetweentheVAandtheabovementionedchilledwatersystems.ThiswillpreventchilledwaterintrusionoftheVASystemduringmaintenanceactivities.No.FSARSections9.2.12.3,9.2.12.4,9.3.1.1,Chapters6and15,andTable3.2-1werereviewedforthismodification.ThemodificationwillhavenoadverseaffectsontheoperationorfunctionoftheRBCWZone1,RWCW,orI/ASystemsasdefinedintheFSAR.ThemodificationwillsatisfyallthedesignrequirementsoftheANSIB31.1CodeandFSARTable3.2-1.Therearenonewsafetyfeaturesoraccidentscenariosthatwouldbeaffectedbytheactionstakeninthismodification.Theproposedactionsdonotinvolveaprecursoroforcontributortoanyevaluatedaccidents'involvingoffsitedose.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheRBCWZone1andRWCWSystemswillbeenhancedbytheinstallationoftheseballvalves.Therefore,themodificationdoesnotcreateapossibilityforanaccidentormalfunctionof.adifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThemodificationwillmeetallthedesignrequirementsasspecifiedintheFSARandthestructuralintegrityofth'ealteredpipingwillbemaintained.TheoperationandfunctionoftheRBCWZone1andRWCWcoilfreezeprotectionpipingwillnotbechangedbytheactionstakenbythismodification.NoneoftheparametersthatarethebasisfortheUnit1TechnicalSpecifications(TechSpecs)willbeaffectedbythismodification.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasesforanyTechSpecs.

95-128~L-ThepurposeofNL-94-014istoaddresstheintentnottomaintainelevencheckvalveslocatedontheLiquidRadwaste(LRW)InfluentHeader.No.,FSARSections15.7,15.7.2,15.7.2.1,11.2,and11.3werereviewedforthisproposedaction.Completefailureofthecheckvalvecombinedwithfailureofotherbarrierswouldatworstresultintheunintendedtransferofwatertoanotherplantcollectionsumporanotherplantsystem.Thiswouldrequirefailureofasecondcheckvalve,oranormallyclosedvalve.Hence,thereisanadditionalbarrierineachcasetostoptheflowofwater.However,ifthisbarrieralsofailed,theoffsitedoseresultingfromthispotentialspillwouldlikewisebenegligible.Also,nosystemcomponentsarelikelytofailasaresultoftheproposedaction.'herefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofariaccidentaspreviouslyevaluatedintheFSAR.No.llfNoTheonlyfailurethatcouldbepostulatedwouldbeatotalcheckvalvefailure.Asdescribedabove,thisfailurewouldhavenoeffectonoperationofanyequipment.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.Technic'alSpecification(TechSpec)Section3/4.11.1.2specifiesthelimitsonthedosetoamemberofthepublicfromradioactivematerialsin.liquideffluentsreleasedfromeachreactor.Allliquid'eNuentwouldbetreatedsimilarly,nomatterwhatpathittakestotheLRWSystem.Theiefore,theproposedactiondoesnotreducethemarginofsafety.asdefinedinthebasisforanyTechSpec.

95-129DC.9,UThepurposeofthemodificationistoreplacetheThermo-LagpartitionheatshieldpartitionbetweenMCCOB136andpanelOC8778withPROMAT-Hafireretardingwallboard.Thiswillpreventatransientfirefromdamagingbothredundantpanels.No.IINo.FSARSections3.8.4.3,3.12.3.2,and3.12.3.4.1werereviewedforthismodification.Installingtheheatshieldwalleliminatesthedirectconsequencesofasingledesignbasisfire,damagingordestroyingMCCOB136andControlPanelOC8778simultaneously.Thewallwillbedesignedtowithstandseismicandhydrodynamiceventstoprecludesafetyimpactitemconcerns.Theproposedchangehasnoimpactonanyexistingaccidentanalysisnoronanyanticipatedtransient.Themodificationwillnotadverselyaffectanystructure,system,'orcomponentinperformingitssafetyfunction,andinfactprovidesthemeanstomaintainequipmentdesignbasisoperation.Theproposedactiondoesnotinvolve'aprecursoroforacon'tributortoanyevaluatedaccidentsthathaveradi'ologicalconsequences.TheheatshieldwallensuresthatOB136andGC8??8BareabletoperformtheirsafetyshutdownfunctionsintheeventofanAppendixRfirein.theirlocation.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.ThewallwillbedesignedasaCategory1Structure.Thewallhasnoconnectiontoanyplantoperationalsystem.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.TechnicalSpecification(TechSpec)Sections3/4.6.5and3/4.7.2werereviewedforthismodification.The'modificationwilleliminatethepossibilityofhavingthedirecteffectsofadesignbasisfirefromdisablingbothtrainsofsafetysystems,suchastheControlRoomEmergencyOutsideAirSupplySystem(CREOASS)andStandbyGasTreatmentSystem(SGTS).Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpecs.

00 95-130Thepurposeofthemodificationistoreplacesixexisting1instrumentationisolationvalvesonSP-DCB-112.forReactorPressureVessel(RPV)levelandpressureinstrumentation.Thiswillprovidepositiveshut-offforisolationoftheinstrumentationwhensodesiredandensurethatthevalve'sindicatedpositionisreliableasreflectedbythestemposition.No.FSARSections6.3and15.6.2werereviewedforthismodification.ThemodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheSafetyRelatedDisplayInstrumentation(SRDI).Themodificationwillnotchangeanyfunctionnoranyoperationalrequirementsofthesystemoranycomponentinthesystem.Thevalveswillbereplacedwithadesignandmanufactureproventobesuperiorandmorereliablethantheexistingvalves.ThemodificationwillenhancetheoperationoftheSRDI.FSARSection15.6.2boundsanyfailurethatmayoccurduetothismodification,Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.No.Cons'ideringtheabove,themodificationdoesnotcreatethepossibilityforan*accidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.Section3/4.3.7oftheUnit1TechnicalSpecification(TechSpec)defines.thelimitingconditionsofoperationthatwillbefollowedwhilethemodificationworkisbeingperformed.NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythis,modification.Therefore,themodificationwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.I 95-131DCP->>,UiThepurposeofthemodificationistosealthreeunidentifiedpenetrationsexistingfromtheControlStructure729'estibuleintotheUnit1ControlRoom.Alsotwineinchfireprotectionconduitswillbesealed.No.FSARChapters6and15werereviewedforthismodification.Therearenoengineeredsafetyfeaturesoraccidentscenariosthatwouldbeimpactedbythe'ctionstakenbythismodification.ThemodificationwillconformtoallthedesigncriteriaasspecifiedintheFSAR.Thereisnoequipmentimportanttothesafeshutdownoftheplantthatcouldbeimpactedbythismodification:Themodificationwillnotincreasetheradiationexposuretoanyplantoperatingpersonnelorthegeneralpublic.Theproposedactionswillnotinvolveaprecursorofnoracontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,themodificationdoes'otincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttos'afetyaspreviouslyevaluatedintheFSAR.No.Followingtheimplementationofthismodification,boththestructuralintegrityandfireratingoftheControlRoomwallswillbemaintainedinaccordancewiththerequirementsandguidelinesprovidedintheFSAR.Themodificationwillbeconsistentwithothersimilarplantpenetrationinstallations.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.NoneofthebasisfortheUnit1TechnicalSpecifications(TechSpecs)willbeaffectedbythismodification.Therefore,themodificationwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-132ThepurposeofthesetpointchangeistochangethesetpointofthereliefvalvesontheServiceAirCompressorDischargePipingto145psig.Thiswillpreventthespuriousactuationofthereliefvalves.~lhhhlE:No.FSARSection9.3andTable3.2-1werereviewedforthissetpointchange.ThesetpointchangewillnotaffectthefunctionoftheServiceAirSystem.ThesetpointchangewillimprovethereliabilityoftheServiceAirSystembypreventingreliefvalveactuationduringnormaloperation.TheServiceAirSystemanditscomponentsdonotperformanysafetyrelatedfunction.Therefore,thesetpointchangedoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.'Thenewsetpointchangewillnotcausethepressureratingsofthecomponentsfrombeingexceededandwillnotadverselyaffectthepressurecapabilitiesofthesystem.Therefore,theproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.III.No.TheServiceAirSystemhasnosafetydesignbasisandisnotcoveredintheTechnicalSpecifications(TechSpecs).Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-133C*>>*,.C,,dDP>>,.C,,IllThepurposeofthesemodificationsistoreplaceeightmotorlubeoilcoolercoilsintheResidualHeatRemoval(RHR)Systemwithcoilsmadeofamorecorrosionresistantmaterial.ThemodificationswilladdflangestotheEmergencyServiceWater(ESW)supplyandreturnpipingforthe'A','C',and'D'HRpumpmotoroilcoolingcoils.ThiswillenhancetheRHRpumpmotorlubeoilcoolingcoilreliabilityandincreasethecoillife.No.FSARSections3.10a,6.3,6.3.4,9.2.1,9.2.5.2,'nd15.0werereviewedforthismodification.ThemodificationsdonotcauseanynewESWsinglefailures.ThereisnoimpactonthedynamicqualificationoftheRHRPumpMotor.ThemodificationsdonotaffecttheperformanceoroperabilityoftheRHRPumps.Themodificationsdonotaltertheabilitytocontainand"conveyESwatertotheECCScomponentsitservices.ThepipingchangesareconstructedtoASMEBAPVCode,SectionIII,Class3requirements.ThemodificationsdonotchangetheeffectiveheattransferrateforthedesignESWflowtomaintainthebearingoiltemperaturebelowthemaximumallowabletemperaturesandassureproperRHRoperation.Therefore,themodificationsdonotincreasetheprobabilityoftheoccurrenceortheconsequencesofan.accidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationsdonotcreatethepossibilityforanaccidentormalfunctionofadifferenttyp'ethananyevaluatedpreviouslyinthe'SAR.IIINo.TechnicalSpecification(TechSpec)Bases3/4.4.9,3/4.5.1,3/4.5.2,3/4.6.2,3/4.7.1,and3/4.9.1lwerereviewedforthismodification.ThemodificationswillnotaffecttheRHRshutdowncoolingmodeofoperation.ThereplacementoftheRHRpumpmotoroilcoolingcoildoesnotinhibittheperformanceoftheLowPressureCoolantInjection(LPCI),ContainmentCooling/SpraymodeoftheRHR,orShutdownCoolingmodeoftheRHRrefuelingoperation.Therefore,themodificationswillnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

94-134CPDCP94-3021A-FDCP94-3022A-FUnits1and2ThepurposeofthesemodificationsistocorrecttheproblemwithexcessiveresinheelintheCondensateDemineralizerServiceVessel,resinsegregationduringresintransfer,andthelackofknowledgeofthestatus.ofthedrainedCondensateDemineralizerServiceVessel.No.FSARSections'9.2.10,10.4.6,11.2,11.3,and15.2.7werereviewedforthismodification,Theproposedactiondoesnotaffecttheprimarycondensateorfeedwaterflowpath.Thefunctionandoperationofthecondensateorfeedwatersystemisunchanged.Therefore,themodificationdoesnotincreasetheprobability'foccurrenceortheconsequencesofanaccidentevaluatedintheFSAR.TheCondensateDemineralizerortheCondensateTransferandStoragesystemsarenot'safetyrelatedorrequiredforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.Therefore,theproposedactiondoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.II.No.Theproposedactioncould~resultinanewflowpathfromtheCondensateDemineralizerVesseltotheCondenserintheeventofavalveleakageormisalignment.Thisflowpathcouldcreateapossibilityforamalfunctionofa'ifferenttypethananyevaluatedpreviouslyintheFSAR.However,aflowpaththroughtheCondensateTransferSystemtotheCondenserpresentlyexiststhroughthecurrentresininletline.'naddition,areliablecheckvalvewillbeinstalledinthispotentialflowpathtopreclude/minimizeflowtothecondenserduetovalvemisalignmentorvalveleakage.Therefore,themodificationsdonotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanany,evaluatedpreviouslyintheFSAR.IIINo.TheaffectedsystemsandcomponentsareaddressedinTechnicalSpecification(TechSpec)Bases3/4.4.4and3/4.8.Theconductivitymonitoringequipmentwillnotbeaffectedbythismodification.Electricalseparationandprotectiondevicecoordinationofthenon-Class1Epowercircuitensurethattheavailability'ndtheoperabilityoftheupstreamClass1EpowersourcestoPanels1Y128and2Y128arenotaffectedbythemodification.Therefore,themodificationsdonotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-135CP.dCP.>>.CidThepurposeofthesemodificationsistomodifyandreplacethe'existingcomponentsoftheTaproggeTypeHE-4CondenserTubeCleaningSystem(CTCS)ballstrainersections,withTaproggeTypeMFdesignstrainers.ThemodificationswillimprovecondenserperformanceandgrosselectricaloutputbyenhancingtheCTCSballcollectionefficienciesandeffectiveness,therebyallowingcontinuousoperationoftheCTWSandmaintainingoptimumcondensertubecleanliness.IINo.FSARSections8.3.1,10.4.5,and15werereviewedforthesemodifications.TheCirculatingWater(CW)andCTCSSystemsarenotsafetyrelatedorrequiredforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.ThemodificationsprovidestrengthenedCTCSstrainersectionsandthereforethepotentialforafailureoftheCTCSstrainersectionsisreduced.Therefore,themodificationsdoriotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.'onsideringtheabove,themodificationsdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheTechnicalSpecifications(TechSpecs)forUnits1and2donotaddressthenonsafetyrelatedCWandCTCSSystems.Therefore,themodificationsdonotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

95-136OC-,IliCThepurposeofthemodificationistophysicallyisolatetheCement'SiloBuilding(CSB)fromtheRadwasteSolidificationSystem(RWSS).ThiswillprovidepositiveisolationbetweentheRadwasteBuildingandtheCementSiloBuildingaswellastheoutsideenvironment.Thiswillalsoeliminatethepossibilityofanincorrectsystemalignmentthatcouldleadtoaninadvertent".radioactivecontaminationeventwithintheCementSiloBuilding.No.FSARSections11A.2.2,Chapter15,andTable3.2-1werereviewedforthismodification.ThemodificationwillhavenoadverseaffectontheoperationorfunctionoftheRadwasteSolidificationSystem.Noneoftheequipment-orcomponentsbeingremovedorabandonedbythismodificationserveanysafety-relatedfunctionsnorinteractwithanysafetyrelatedequipment.TheproposedactionwillnotcontributetothelossofeNuentfromsystemcomponentsnorwillitcausesiteboundarydosestoexceedtheallowableoffsitelimits.Themodificationwillcomplywiththeoriginalconstructioncodesandregulatoryrequirements.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceor'heconsequencesofanaccident'ormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Consideringtheabove,themodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IllNo.ThemodificationdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemgovernedbytheTechnicalSpecifications(TechSpecs).NoneoftheparametersthatarethebasesfortheTechSpecswillbeadverselyimpactedbythismodification.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTech'Spec.

95-137DC*,UiThepurposeofthismodificationistoimplementadisk-basedarchive/ret'rievalsystemtoreplacethemagnetictape-basedSecurityDataManagementSystem(SDMS)currentlyinuse.Themodificationwillmakethearchive/retrievalsystemfasterandlesslaborintensive.Itwillalsomakethedatamorereliable.No.TheproposedchangesdonotfunctionallychangetheoperationofthephysicalSecurityComputerSystem.Themodificationwillmakeitmorereliableandmakethedatamoremaintainable.TheSSESPhysicalSecurityPlan,outlinedinFSARSection13.6,doesnotidentifytheSecurityComputerSystemasasafetysystemnorasasystemrelatedtosafety.Implementationoftheproposedactionwillnotaltertheintentofthecomputer-basedSDMS.Theproposedactionisnon-qualityrelatedandnon-safetyrelated,accordingtothedefinitionsintheQualityAssurance(QA)program.Therefore,themodificationdoesnotincreasetheprobabilityoftheoccurrenceortheconsequencesofanaccideritormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.TheSecurityComputerSystemcannotcontrolplantfunctions.TheactiondoesnotaffecttheabilityoftheSecurityComputerSystemtomonitoractualorpotentialsecurityviolations.Therefore,themodificationdoes.notcreatethepossibilityforanaccideiitormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThemodificationhasnoeffectonanyTechnicalSpecification(TechSpec)Bases.Therefore,themodificationdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechSpec.

0 95-138ThismodificationpackageinstallslargersizespringsinfourControlStructurefiredampers.No.TheproposedactionsdonotincreasetheprobabilityofoccurrenceofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.ThefiredampersareinstalledinductsoftheControlRoomFloorCoolinga'ndComputerRoomCoolingSystem.Neitherthefiredampersnorth6coolingsystemsareinitiatorsofanyaccidentsevaluatedintheSAR(FSARSections9.4,9.5,15.6,and15.7).ThefiredampersintheControlStructureductworkarenotreliedupontomitigateanyplantaccidentsanalyzedintheSAR.No.Theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttype'hanevaluatedintheSAR(FSARSection9.4).Nonewoperatingmodesarecreatedforanyofthesystemsinwhichthedampersareinstalled.ThereplacementspringscomplywiththesameUnderwriter'sLaboratorystandardsastheoriginalwhichensuresthefunctionandintegrityofthedamperstoperformas.firebarriers.IIINo.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.ThemodificationsmaintainthemarginofsafetyinTechSpecs3/4.3.7,3/4.3.7.9,and3/4.7.2because.theydonotimpacttheoperationofthe.systemsinwhichthedampersareinstalled.'hemodificationsmaintainthemarginofsafetyinTech.Spec.3/4.7.7becausetheymaintaintheoriginaldamper'sfireratingandintegrity.

95-139OC>>.FICUi.dInstalla120VACnoisesuppresseratUnit1CoolingTowerFlow'TransmitterFT-11503andaUnit2CoolingTowerFlowTransmitterFT-21503.I'o.Theproposedmodificationswill.installanoisesuppressertoprovidecleaner120VACpowersupplyforFT-11503andFT-21503.Theproposedmodificationswillprovideamorereliableinstrumentloopoperationbecausetheexistinghardwarewillperformallthesamefunctionsasbeforeandhavetheaddedbenefitofincreased.availability.IINo.TherearenootheraccidentsormalfunctionsnotpreviouslyanalyzedintheSARthatcouldoccurduetothenewconfigurationeitherduringorafterinstallationofthesemodifications.Inadditiontothis,nonewmechanismwhichwouldresultinadosetothepublicisbeingcreatedbythiscomponentaddition.No.Thenewconfigurationwillnotaffecttheexistinginstrumentloopaccuracy;therefore,theloopwillcontinuetouse5000gpmfortheminimumblowdownflowpermissivetoensureminimumdilution.flowisavailablepriortoallowingradwasteeNuentdischargevalvestobeopened.Sincethenewconfigurationswillnotaffecttheminimumrequirementsforcoolingtowerblowdowndilutionflow,theproposedmodificationswill.notreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.~

95-140ECPE-,IlI>>ChangesetpointsforUnit1125VDCBatteryMonitor96-1D691;96-1D692,96-1D693'nd96-1D694.INo.Batterymonitorsdonotinitiate/performanysafetyfunctionanddonotpreventthesafetyrelatedClasslE125VDCSystemfrommeetingitsminimumperformancerequirements.Thebatterymonitorsetpointchangesdonotincreasetheprobabilityofoccurrenceofconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.No.Failureofthebatterymonitors,connectedtothebatteryandbatterychargers,doesnotpreventtheClass1E125VDCSystemfrommeetingitsminimumperformancerequirement.FSARTable6.3-5hasevaluatedbatteryorbatterychargerfailure.Thesetpointcha'ngesdonotcreateapossibilityforanaccidentormalfunctionofa.differenttypethananyevaluatedpreviouslyinSAR.IIINo.ThemarginintheClass1E125VDCSystemisnotaffectedbythissetpointchangepackage.

,ulAddanadditionalmanualisolationvalvedirectlyupstreamofeachof.threefeedwaterdrainvalves(206092,206093,and206132).ThisdoubleisolationisanefforttoeliminateadditionalLiquidRadwaste(LRW)causedbyasingleleakingvalve.Qlh5KE:INo.Thismodificationwilladdnewmanualgatevalvesasbackupstoexistingdrainisolationglobevalves206092,206093,and206132."Thenewgatevalveswillbenormallyclosedandhaveanegligibleimpactontheflowcharacteristicsinthe4"GBD-215drainlinesforfeedwaterheaterstringsA,B,andC.Thismodificationwillhavenoadverseaffectsontheoperationorfunctionofthe.Condensate/FeedwaterSystemasdefinedintheSAR.ThemodificationwillsatisfyallthedesignrequirementsoftheANSIB31.1Code;thereby,satisfyingthedesignrequirements'asspecifiedinFSARTable3.2-1,TheSARhasbeenevaluated,specificallyinFSARSections10.4.7,CondensateandFeedwater";FSARChapter6,"EngineeredSafetyFunctions";andFSARChapter15,AccidentAnalysis"withspecialattentiontoAccident15.1.1,"lossofFeedwaterHeating".Basedontheabove,theactionstakeninthismodificationwillnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentoramalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR.No.Thefunctionandperformanceofthe4"GBD-215condensate/feedwaterdrainpipingwillbeenhancedbytheadditionofthesemanualgatevalvesduetothe~doubleisolationfunctiontheyprovideinconjunctionwithglobevalves206092,206093,and206132.Thenewmanuallyoperatedgatevalveswillbelocatedadjace'nttotheexistingmanuallyoperatedglobevalves.Bothvalves(ineachline)willbenormallyclosedandbothvalveswouldrequireopeningtodrainthesystem.Basedontheabove,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethanandevaluatedpreviouslyintheSAR.IIINo.Thepipingandcomponentsaffectedbytheactionstakeninthismodificationarenotspecificallyaddressedin,thebasisforanyUnit2TechnicalSpecification.Thismodificationonlyprovidesenhancementtotheisolationcapabilitiesfor(3)normallyclosed'drainlines.BasedonthisandthefactthatthemodificationmeetsallapplicabledesigncriteriaasspecifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

ThefirstportionofthistestprovidesasmallportionofUnit2ServiceWaterflow(approximately20-30gpm)totheUnit1TurbineBuildingClosedCoolingWater(TBCCW)BHeatExchangertodeterminethemaximumamountofflowavailablewithtemporaryhosesandthesecondportionofthetestfullyopenstheServiceWaterTCVfortheTBCCWHeatExchangerstopermit'datagatheringneededtoevaluatethepluggingofadditionalCu-Nitubes.No.FSARSection9.2.1.3statesthatTheSWSoperationhasnorelatedfunctionandfailureofthesystemwillnotcompromiseanysafetyrelatedsystemorcomponentorpreventasafenuclearshutdown."TheactionsofthistesthavethepotentialtoadverselyaffectUnit1and2operatingsystems,butthemargintodesignvaluesandcontrolsofthetestareadequatetoaccommodatetheseactionsandpotentialactions.Therefore,theperformanceofTP-115%08doesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentor.malfunctionof.equipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.FSARSection9.2.1.3statesthat"TheSWSoperationhasnosafetyrelatedfunctionandfailureofthesystemwillnotcompromiseanysafetyrelatedsystemorcomponentorpreventasafenuclearshutdown."Theactionsofthistesthavethe,potentialtoadverselyaffectUnit1and2operatingsystems,butthemargintodesign'valuesandthecontrolsofthetestareadequatetoaccommodatetheseactionsandpotentialactions.Therefore,theperformanceofTP-115-008doesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.Theactivitiesofthistestareexpected,tobeaccommodatedbythesystemsaffectedandhavenoadverseeffectsontheoperationofthosesystems.Basedonthis,thetestwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-143DCP.94-9077,Unit2Anisolationvalvewillbeaddedineach5/8"tubingrundownstreamofSYs22365,22366,22368,22369andupstreamofSV22361.AtestconnectionwitharootvalvewillalsobeaddedinthetubingdownstreamofValvesSV22366andSY22369.Theseactionswillprovidetheisolationand'testingconnectionstoperformtestSE-273<00inatimelyandefficientmanner.INo.IINoThismodificationwill,addnewmanualvalvestoisolateportionsofexistingPostAccidentSamplingSystem(PASS)systeminordertoperformtestSE-273-400inamoreefficient,timelymanner.Thevalveswillbenormallyopenuntilneededforisolation.ThismodificationwillhavenoadverseaffectsontheoperationorfunctionofthePASSasdefinedintheSAR.ThemodificationwillsatisfyalldesignrequirementsoftheANSIB31.1Code;therebysatisfyingthedesignrequirementsasspecifiedinFSARSection18.1.21,PostAccidentSampling.Also,theSARhasbeenevaluated,specificallyFSARChapter6,EngineeredSafetyFunctionsandFSAR'Chapter15,AccidentAnalysiswhichrevealedthattheproposedactiondoesnotinvolveaprecursoroforcontributortoanyaccidentsinvolvingoffsitedose.Therefore,therewillbenoin'creaseintheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.UThismodificationwillmeetthedesignbasiscriteriaasspecifiedintheSAR.ThetestingcapabilitiesforthefunctionandperformanceofthePASSSystemwillbe'nhancedbytheadditionofthemanualisolationvalvesandadditionaltestconnections.Basedontheabove,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.ThetubingandcomponentsaffectedbytheactionstobetakeninthismodificationareaddressedinSection6.8.4.coftheUnit2TechnicalSpe'cification.ThePASSisaprogramrequiredtobeestablished,implementedandmaintainedbytheProceduresandProgramsSection(6.8)ofTechnicalSpecificationSection6.0,AdministrativeControls.TherearenoLimitingConditionsofOperation(LCO)involvedwiththeprogramrequirements.ThismodificationonlyprovidesenhancementtotheisolationandtestingcapabilitiesforthePASSsystem.Basedonthisandthefactthemodificationmeetsallapplicabledesigncriteriaasspe'cifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforTechnicalSpecification.

cThismodificationwilleliminatealoopsealinthestatorcoolingwaterstoragetankventinordertoprovideafreeflowdesignandmaintainidealoxygenlevelsinthestatorcoolingwater,whichwillreducecorrosionofthestatorwindings.Q85bhhRY'No.TheproposedmodificationonlyaffectscomponentsintheStatorCoolingSystem.TheStatorCoolingSystemdoesnotperformanysafetyfunctionsrequiredtopreventormitigatetheconsequencesofabnormaloperationaltransientsoraccidents.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR..IINo.Theproposedmodificationdoesnotalterthedesignbasis,thefunction,northeoperationofthenon-safetyrelatedStatorCoolingSystem.Therefore,theproposedmodificationdoesnotcreateapossibilityfor'anaccidentormalfunctionof.adifferenttypethananyevaluatedpreviouslyintheSAR.illNo.TheproposedmodificationdoesnotjeopardizeordegradethefunctionoroperationoftheStatorCoolingSystemoranyplantsystemgovernedbythe.TechnicalSpecifications,specificallySection3/4.8,ElectricalSystems.NoneoftheparametersthatarethebasesfortheTechnicalSpecificationswillbeadverselyimpactedbythemodification.Therefore,theactionstakenbytheproposedmodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-145Thismodificationwillremovethepermanentconnectiontotheportableradiationmonitor(PING)andqualify/retainthebulkofthe1/2tubingforusebyChemistry.No.FSARChapter6,EngineeredSafetyFeatures"andFSARChapter15,AccidentAnalysis"specificallyaccidentscenario15.7.1,'GaseousRadwasteSystemLeakorFailurehavebeenreviewed.Therearenoengineeredsafetyfeaturesoraccidentscenarios,includingleakageorfailureoftheGaseousRadwasteSystem,thatwouldbeimpactedbytheactionstakenperthismodification.The1/2'tainlesssteelsampletubingandtubingsupportswillbequalifiedtomeetalltheapplicabledesignrequirementsasspecifiedpertheSAR.TheactionstakenbythismodificationwillnotadverselyimpactthefunctionoroperationoftheOffgasSystem;therefore'hismodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheSAR.TheOffgasSystemisnotasafetyrelatedsystem.Thereisnoequipmentimportanttothesafeshutdownoftheplantthatcouldbeimpactedbythismodification;therefore,theactionstakenbythismodificationwillnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR.FSARSection15.7.1,GaseousRadwasteSystemLeakorFailure",boundsanyfailurewhichmayoccurwiththissystem,includingatotalreleaseofradiologicalactivitynormallyprocessedbytheOffgasTreatmentSystembeingdischargeddirectlyintothe:TurbineBuilding.Sincethesystemandcomponentsaffectedbythismodificationwillcontinuetocomplywiththeoriginaldesignandconstructioncodes,therewillbenoincreaseintheconsequencesofanaccidentor'malfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR.INo.Thismodificationwillnotalterthe.designbasisfortheOffgasSystem,whichispartoftheGaseousRadwasteSystemandwillcomplywiththeoriginaldesignandconstructioncodes.'tenhance'stheChemistry'sabilitytoacquiremonthlyoffgasposttreatmentsamplesfromtheinletandoutletpipingofHEPAoutletfilter1F302.Anyfailureofthetubingwouldbeboundedbythepreviouslyanalyzedaccident'GaseousRadwasteSystemLeakorFailure".Therefore,theactionstakenbythismodificationdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbytheTechnicalSpecifications,specificallySection3/4.3.7.11,'RadwasteGasesEffluentInstrumentation";Section3/4.11.2.4,GaseousRadwasteTreatmentSystem;and3/4.11.2.6,ExplosiveGasMixture".Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-146Thismodificationwillremovethepermanentconnectiontotheportableradiationmonitor(PING)andqualify/retainthebulkofthe1/2"tubingforusebyChemistry.No..FSARChapter6,EngineeredSafetyFeatures"andFSARChapter15,"AccidentAnalysis"specificallyaccidentscenario15.7.1,GaseousRadwasteSystemLeakorFailurehavebeenreviewed.Therearenoengineeredsafetyfeaturesoraccidentscenarios,includingleakageorfailureoftheGaseousRadwasteSystem,thatwouldbeimpactedbytheactionstakenperthismodification.The1/2'tainlesssteelsampletubingandtubingsupportswillbequalifiedtomeetalltheapplicabledesignrequirementsasspecifiedpertheSAR.Theactionstaken.bythismodificationwillnotadverselyimpactthefunctionoroperationoftheOffgasSystem;therefore'hismodificationwillnotincreasetheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheSAR.-TheOffgasSystemisnot.asafetyrelatedsystem.Thereisnoequipmentimportanttothesafeshutdownoftheplantthatcouldbeimpactedbythismodification;therefore,theactionstakenbythismodificationwillnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR.IINo.FSARSection15.7.1,GaseousRadwasteSystemLeakorFailure",boundsanyfailurewhichmayoccurwiththissystem,includingatotalreleaseofradiologicalactivitynormallyprocessedbytheOffgasTreatmentSystembeingdischargeddirectlyintotheTurbineBuilding.Sincethesystemandcomponentsaffectedbythismodificationwillcontinuetocomplywiththeoriginaldesignandconstructioncodes,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR.ThismodificationwillnotalterthedesignbasisfortheOffgasSystemwhichispartoftheGaseousRadwasteSystemandwillc'omplywiththe,originaldesignandconstructioncodes.ItenhancestheChemistry'sabilitytoacquiremonthlyoffgasposttreatment.samplesfromtheinletandoutletpipingofHEPAoutletfilter1F302.Anyfailureofthetubingwouldbeboundedbythepreviouslyanalyzedaccident"GaseousRadwasteSystemLeakorFailure".Therefore,theactionstakenbythismodificationdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbytheTechnicalSpecifications,specificallySection3/4.3.7.11,"RadwasteGasesEffluentInstrumentation;Section3/4.11.2.4,"GaseousRadwasteTreatmentSystem";and3/4.11.2.6,ExplosiveGasMixture.Therefore,theactionstakenbythismodificationwillnot'reduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-147ThepurposeofthisSafetyEvaluationistoprovideanassessmentoftheuseoftheSupplementDecayMeatRemoval(SDHR)permanentpipingtosupplyeitherorbothUnit'sFuelPoolCoolingandCleanup(FPCCU)HeatExchangerswithcoolingwaterfromtemporaryplantequipmentoperatingoutsideoftheReactorBuildings.Thescopeofthissafetyevaluationisforboththeinstillationandoperationofthecoolingequipmentused.~lhhhlK,INo.TheadditionofthenewSDHRpiping,valves,supports,installation,wallattachments,andpenetrationsaswellastheoperationoftheSDHRsystemitselfarenotinitiatorsofanyotheraccidentsevaluatedintheSAR,therefore,thesemodificationsdonotaffecttheprobabilityofoccurrenceofanaccident.AmalfunctionoftheSDHRequipmentdoesnotincreasetheconsequencesofanaccidentaspreviouslyevaluatedintheSARduetothefactthatthedesign'basisaccidentscenariofortheFuelPoolisaseismiceventthatresultsinbothUnit'sFPCCUsystemsbeingnon-functionalandothermeansarereliedupontoachievecoolingoftheSpentFuelPoolsandbothReactorVessels(i.e.,RHRShutdownCoolingandRHRFuelPoolCoolingAssist).TheSDHRsystemcoolingequipmentwillmaintaintherequiredpositivepressuregreaterthantheFPCCUHeatExchangershellcontinuosradiationmonitoringinconjunctionwithperiodicchemistryradiologicalsamplingwillmaintaintheabilitytomonitorforcoolingwatercontamination.Therefore,theradiologicalanalysis(andsourcetermsused)intheFSARanalysis(Appendix9A,15.6.2,15.6.5,and15.7.4)areboundingandnoincreaseddosestooperatingpersonnelorthegeneralpublic.exist.Thus,noincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyisincurred.No.TheonlynewmalfunctionpossibleisthefailureoftheSDHRsystemitself.IftheSDHRsystemfailedtoprovidecoolingwatertotheoutageUnit'sFPCCUHeatExchangers,therewouldbenonewaccidentcreatedsincethisfailureisboundedbyfailureofeitherorbothoftheFPCCUsystemsduringoperation.Additionally,afailureoftheSDHRcoolingequipmentorpipingcoulddraintheSDHRsystem.However,periodicsamplingaswellassystemdesignandoperationensuresthatradioactivityreleaseswouldnotexceedtheevaluatedfortheexistingServiceWatereffluentpathway.No.TheoperationoftheSDHRsystemdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecification.ThemaximumTech.Spec.temperaturelimitforoperationinCondition5is140'FintheReactorVessel.TheFSARSpentFuelPooltemperaturelimitis125'F.AdditionoftheSDHRsystemwillenabletheoutageUnit'sFPCCUsystemtoremovedecayheat(fromboth-UnitsSpentFuelPoolsandtheReactorCore)aswellastheoperatingUnit'sFPCCUsystem.ThisapproximatelydoublestheheatremovalcapacityavailableviaFPCCUduringarefuelingoutagewhen(inpastoutages)ServiceWaterandRHRShutdownCoolingareOutofService(OOS).TheSDHR'systemwillbedesignedandopenedonanoutagespecificbasistoaccommodatethisgreaterheatloadandkeepbothFuelPoolsbelowtheadministrativelimitof115'F(andthereby125FSARand140Tech.Spec..limits).

95-148ImproveZoneIIItemperaturecontrolbyregardingZoneIIIheaterandcoolingcoiloperationviaZoneIIIexhaustairtemperatureratherthanZoneIIIsupplyairtemperature.Rlh51hfE:No.NormaltemperaturecontrolforReactorBuildingventilationisnotasafetyfunction;nor,canitaffectasafetyfunction.TheonlyfunctionoftheReactorBuildingventilationsystemisitsabilitytoisolateandmaintainsecondarycontainmentintegrity.TheisolationfunctionoftheReactorBuildingventilationsystemisunaffectedbythisactivity.No.TheonlyriskincurredisthepotentialtofreezeaZoneIIIcoolingcoil.Worstcase,freezingofacoolingcouldresultinthelossofReactorBuildingChilledWatersystem.LossoftheReactorBuildingChilledWatersystemiscurrentlyevaluatedintheFSARandwouldbebondingforthisevent.rIIINo.TemperaturecontroloftheReactorBuildingventilationsystemisnotcontainedwithinsystemisnotcontainedwithinTechSpecs.TechSpecsonlyaddresstheisolationfunctionoftheReactorBuildingventilationsystemanditsabilitytomaintainbuildingpressureat>0.25WICvacuum.TheproposedactiondoesnotimpactthesefunctionsortheirbasisasidentifiedinTechSpecs.

Thismodificationwillinstalladditionalshieldingbelowtherefuelingfloorhighexhaustradiationmonitors.INo.Theexistingseismicqualificationoftheducting,monitors,andtheductin/monitoringsupportsprecludesanysafetyimpactconcernsfromoccurringandassuresnoadverseaffectswillbeimposedonthesystemintegrity.ThemodificationwillnotchangeanyfunctionoroperationoftheProcessRadiationMonitoringSystem.Therefore,thismodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunction'ofequipmentimportanttosafetypreviouslyevaluatedintheSAR.IINo.ThismodificationwillnotalterthedesignbasisfortheProcessRadiationMonitoringSystemandwillcomplywiththeoriginalconstructioncodes.ItenhancestheabilityofthemonitorstodetectunacceptableradiationlevelsintherefuelfloorhighexhaustductsbyprovidingadditionalshieldingtoprotectthemfrombackgroundareAradiationlevelsbelowthem.Allaspectsofthesystemwillconformtoitsoriginalrequirements'ndfunctionsasspecifiedintheSAR.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheProcessRadiationMonitoringSystemoranysystemgovernedbytheUnit.1andUnit2TechnicalSpecifications.ThosesectionsspecificallyidentifiedareSection3/4.3.2,IsolationActuationInstrumentation,andSection3/4.6.5,SecondaryContainmeht,whichincludes3.6.5.2,SecondaryContainmentAutomaticDampers.NoneoftheparametersthatarebasesfortheUnit1andUnit2TechnicalSpecificationswillbeadverselyimpactedbythismodification.The'modificationwillprotectthemonitorsfrombackgrou'ndradiationeffectswithoutreducingtheirabilitytomonitorexhaustductradiationlevels.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification, 95-150InstallspermanentSupplementalDecayHeatRemoval(SDHR)pipingwithanalternateServiceWater(SW)ProcessRadiationDetectorandRxBuildingChilledWaterpipingthatwillconnecttotemporarycoolingunitslocatedoutsidetheRxBuilding.No.Theproposedactionsdonotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentofmalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.Thenewpiping,valves,supports,insulation,wallattachmentsand'penetrations,radiationdetector,preamplifier,andcablingarenotinitiatorsofanyaccidentsevaluatedintheSAR,otherthanpostulatedmoderateenergypipecracks(FSAR3.6)whichwerefoundacceptable.ThemodificationshaveanegligibleeffectontheServiceWaterandtheFuelPoolCoolingandCleanupresponsetotheNormalandHydrodynamicLoads.No.III'o.TheRx.BuildingVentilationZonesareunaffectedbythismodificationandtheSecondaryContainmentsafetyrelatedfunctionsofmaintainingAradioactivebarrierandanegativepressureof.25"wgareassured.ThesemodificationshavenoeffectontheRx.Buildingstructural,radiationandfirebarrierfunctions.TheradiologicalanalysesincludedinFSAR'Appendix9A,15.6.2,and15.7.4arenotaffected.TheproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.Thenewpipinghasbeen'designedforallNormalandHydrodynamicLoadssimilartotheSWandFPCCexistingpiping.TheClass1EpowersupplyisproperlyisolatedfromthenewradiationdetectionequipmentandtherearenotnewcablefaultswhichcandamageaffiliatedClass1Ecables.Thefailureoftheportablenon-safetycoolingequipmentcoulddraintheSDHRortheRxBuildingChilledWaterpiping;however,nonewmalfunctionsofequipmentimpoitanttosafetyarecreated.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.DCPs94-3057/3058,providethecapabilitytocontinuouslymonitorLiquidEffluentsandmaintainthemarginofsafety.rDCPs94-3053/3054maintainthemarginofsafetyinTechSpecs3/4.6.5&5,2.3byrequiringallRx.Buildingpenetrationstobeappropriatelysealed,ensuringthatthethreeRx.BuildingVentilationZonesarepreserved.thenewpenetrationintheRx.Buildingwallsaresealedwithamaterialanddepththatensuresthatthe3-Hour.FireBarrierisreestablished(TechSpecs3/4.7.7).

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SCPE95-2008,Unit2ChangesetpointsforUnit2125YDCBatteryMonitor96-2D691,96-'2D692,96-2D693;and96-2D694No.Batterymonitorsdonotinitiate/performanysafetyfunctionanddonotpreventthesafetyrelatedClass1E125VDCSystemfrommeetingitsminimumperformancerequirements.Thebatterymonitorsetpointchangesdonotincreasetheprobabilityofoccurrenceofconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Failureofbatterymonitors,connectedtothebatteryandbatterychargers,doesnotpreventtheClass1E125VDCSystemfrommeetingitminimumperformancerequirement.FSARTable6.3-5hasevaluatedbatterychargerfailure.ThesetpointchangesdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyinSAR.IIINo.Themargi'nintheClass1E125VDCSystemisnotaffectedby'thissetpointchangepackage.

Thepurposeofthisprocedureistoallowtieinofatemporaryoutage"chillersystemtotheReactorBuildingChilledWater(RBCW)SystemduringaUnit1Outage.No.Sections9.2.12.3"ReactorBuildingChilledWater'"and9.4.2"ReactorBuildingVentilation"werereviewed.TheFSARdoesnotspecificallyaddresstheaffectedplantsystemsduringoutageconditions.However,installationofthistemporarysystemwillnotimpactoperationofPrimaryContainmentIsolation,theonlysafetyfunctionoftheRBCWSystem.NormaloperationoftheReactorBuildingVentilationSystemwillnotbeimpactedbyinstallationof'thetemporarychillersystem.Additionally,installationofthisequipment'willnotimpactSecondaryContainmentrequirements.Therefore,thisactivitydoesnotincreasetheprobability'rconsequencesofanaccidentpreviouslyevaluatedintheFSAR.INo.Theonlynewmalfunctionpossiblewouldbefailureofthetemporarysystemitself.Ifthetemporarychillersystemfailedtoprovidecooling,therewouldbenonewaccidentcreatedsincethisfailureisboundedbyfailureoftheReactorBuildingChillersduringplantoperation.IfthetemporarysystemweretofailsuchthatitcausedacompletelossofRBCWinventory,therewouldbenonewaccidentsincethisistooboundedbyalossofRBCWduringplantoperation.SinceRBCWisanon-safetyrelatedsystem,thereisnoimpactonplantsafety.IIINo.TechSpecSection3.6'.3addressesPrimaryContainmentIsolationValvesandisnotaffectedbytheproposedaction.Section3.6.1.7addressesDrywellAverageAir~TemperatureduringConditions1,2,and3.Sincetheproposedactivitywillbeperformedduringaunitoutage,thissectionisnotaffected.Section3.6.5.1SecondaryContainmentIntegrityisnoaffectedsincethe,installationandoperationofthetemporarychillerwillensuretheboundaryisnotviolated.Therefore,themarginofsafetyistoreducedforanyTechnicalSpecificationbasis.

95-153CP>>IUCDCPs94-3042Aand94-3043,installnew42"diameterductileironRiverWaterMakeup(RWMU)pipingandabandontheexisting42"RWMUprestressedconcretecylinderpiping(PCCP).KklhL4dK\INo.Theproposedactionsdonotincreasetheprobabilityofoccurrenceofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.Noaccidentsareinitiatedby,norrequiretheRWMUsystemforsafeshutdownofthereactor,ormitigationofadesignbasisaccident(FSARSection9.2,9.5,10.4,15).TheRWMUsystemisnotsafetyrelated.IINo.TheproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.Nonewaccidentsormalfunctionsofequipmentimportanttosafetyarepostulatedasaresultofthismodificationsincethere'arenoplantsystemsimportanttosafety.thatrelydirectlyuponRWMUsystemoperability.(FSARSection9.2,9.5,10.4)No.Thepro'posedactionsdonotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.Themodificationsdonotreducethemarginofsafetysince'1)theTechnicalSpecificationsdonotaddressthenon-safetyrelatedRWMUsystemand2)therearenoimpactsonanyTechnicalSpecificationsystems.ThebasesforTechnicalSpecification3/4.7addressingtheEngineeredSafeguardServiceWaterSystemswhichuseriverwaterasnormalmake-uparenotaffectedsincetheirlimitspertaintothespraypondlevelwhichisnotaffected.

95-154ThreemanuallyoperatedvalveswillbeaddedtopipingontheRecombinerSkid.ThesevalveswillprovidedoubleisolationoftheRecombinerSkidwhenitmustbetakenoutofserviceformaintenance,testing,etc.No.ThismodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheOff-gasRecombinerSystemSkidPiping.QualityGroupDAugmentedpipingisrequiredto'meetNRCBranchTechnicalPositionETSB-11-1whichrequiresthatthepipingistobehydrostaticallytestedtotheextentpracticable.TheOff-gasRecombiner'Systemisnotsafetyrelatedandthemodificationwillnotchangeanyfunctionofthesystem.Themodificationwillbeutilizingprovendoubleisol'ationinstallationsandvalvetypesthatcurrentlyexistinexistingrecombinercross-tiepiping.FSARSection15.7.1,GaseousRadwasteSystemLeakonFailure,boundsanyfailurewhichmayoccurwiththissystem.Therefore,theproposedactionsdonotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Thismodificationenhancestheabilitytoisolateanoutwf-servicerecombinerskidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationsandpersonnelsafetyhazardsduetohydrogenleaks.Therearenonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesandtherecombinerroomisvacated,Existingproceduresrequirere-entry.totheroomtorepositionothermanuallyoperatedvalvestotaketheskidfromstand-bytoin-'service.IfanyofthenewvalveswereinadvertentlymispositionedthiswouldbereadilyevidenttotheoperatorstationedattheOff-gasRecombinerPanelonElev.656',andtheroomwouldbere-enteredandthevalvescorrectlypositionedduringthenormalstart-uproutine.Allaspectsofthesystemwillconformtothe'originaldesignrequirementsandfunctionsasspecifiedintheSAR.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplant.systemgovernedbytheTechnicalSpecification,specificallySection3/4.11.2,GaseousEffluents,whichincludes3/4.11.2.4,TheGaseousRadwasteTreatmentSystem,and3/4.11.2.6ExplosiveGasMixture.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

0 95-155OCP,Riii,UiThreemanuallyoperatedvalveswillbeaddedtopipingontheRecombinerSkid.ThesevalveswillprovidedoubleisolationoftheRecombinerSkidwhenitmustbetakenoutofserviceformaintenance,testing,etc.fillh5ihlE:No.ThismodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheOffgasRecombinerSystemSkid~Piping.QualityGroupDAugmentedpipingisrequiredtomeetNRCBranchTechnicalPositionETSB-11-1.whichrequiresthatthepipingistobehydrostaticallytestedtotheextentpracticable.TheOff-gasRecombinerSystemisnotsafetyrelatedandthemodificationwillnotchangeanyfunctionofthesystem.Themodificationwillbeutilizingprovendoubleisolationinstallationsandvalvetypesthatcurrentlyexistinexisting'recombinercross-tiepiping.FSARSection15.7.1,GaseousRadwasteSystem'eakonFailure,boundsanyfailurewhichmayoccurwiththissystem.Therefore,theproposedactionsdonotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Thismodificationenhances.theabilitytoisolateanoutwf-servicerecombinerskidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationsandpersonnelsafetyhazardsduetohydrogenleaks.Therearenonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesandtherecombinerroomisvacated.Existingproceduresrequirere-entrytotheroomtorepositionothermanuallyoperatedvalvestotaketheskidfromstand-bytoin-service.IfanyofthenewvalveswereinadvertentlymispositionedthiswouldbereadilyevidenttotheoperatorstationedattheOff-gasRecombinerPanelonElev.656',andtheroomwouldbereenteredandthevalvescorrectlypositionedduringthenormalstart-uproutine.'llaspectsofthesystemwillc'onfirmtotheoriginaldesignrequirementsandfunctionsasspecifiedin,theSAR.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplantsystemgovernedbytheTechnicalSpecification,specificallySection3/4.11.2,GaseousENuents,whichincludes3/4,11.2.4,TheGaseousRadwasteTreatmentSystem,and3/4.11.2.6ExplosiveGasMixture.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-156ThreemanuallyoperatedvalveswillbeaddedtopipingontheRecOmbiner'Skid.ThesevalveswillprovidedoubleisolationoftheRecombinerSkidwhenitmustbetakenoutofserviceformaintenance,testing,etc.No.ThismodificationwillbedesignedandinstalledtobeconsistentwiththeoriginaldesignandconstructionrequirementsoftheOff-gasRecombinerSystemSkidPiping.QualityGroupDAugmentedpipingisrequiredtomeetNRCBranchTechnicalPositionETSB-11-1whichrequiresthatthepipingistobeh'ydrostaticallytestedtotheextentpracticable.TheOff-gasRecombinerSystemisnotsafetyrelatedandthemodificationwillnotchangeanyfunctionofthesystem.Themodificationwillbeutilizingprovendouble.isolationinstallationsandvalvetypesthatcurrentlyexistinexistingrecombinercross-tiepiping.FSARSection15.7.'1,GaseousRadwasteSystemLeakonFailure,boundsanyfailurewhichmayoccurwiththissystem.Therefore,theproposedactionsdonotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,,aspreviouslyevaluatedintheSAR..No.'hismodificationenhancestheabilitytoisolateanout-of-servicerecombinerskidfromotherin-serviceskidstherebyaidinginthepreventionofpersonnelandareacontaminationsandpersonnelsafetyhazardsduetohydrogenleaks.Thereare.nonewconcernscreatedshouldanyofthenewmanuallyoperatedisolationvalvesbeaccidentallyleftclosedfollowingmaintenanceactivitiesandtherecombinerroomisvacated.Existingproceduresrequirere-entrytotheroomtorepositionothermanually,operatedvalvestotaketheskidfromstand-bytoin-service.IfanyofthenewvalveswereinadvertentlymispositionedthiswouldbereadilyevidenttotheoperatorstationedattheOff-gasRecombinerPanelonElev.656',andtheroom,wouldbereenteredandthevalvescorrectlypositionedduringthenormalstait-uproutine.AllaspectsofthesystemwillconformtotheoriginaldesignrequirementsandfunctionsasspecifiedintheSAR.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheSAR.IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationoftheGaseousRadwasteSystemoranyplant-systemgovernedbytheTechnicalSpecification,specificallySection3/4.11.2,GaseousEffluents,whichincludes3/4.11,2.4,TheGaseousRadwasteTreatmentSystem,and3/4.11.2.6ExplosiveGasMixture.Therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-157ChangeSetpointsforUnit2250VDCBatteryMonitor96-2D295and2D296.SlhllhlhlE:No.BatteryMonitorsdonotinitiate/perforn1anysafetyfunctionanddonotpreventthesafetyrelatedClass1E250VDCSystemfrommeetingitsminimumperformancerequirements.Thebatterymonitorsetpointchanges'donotincreasetheprobabilityofoccurrenceofconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Failureofthebatterymonitors,connectedtothebatteryandbatterychargers,doesnotpreventtheClasslE250VDCSystemfrommeetingitsminimumperformancerequirement.FSARTable6.3-5hasevaluatedbatteryorbatterychargerfailure.ThesetpointchangesdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyinSAR.IIINo.ThemarginintheClass1E250VDCSystemisnotaffectedbythissetpointchangepackage.

95-158ChangeSetpointsforUnit1250VDCBatteryMonitor96-1D695and'1D696.No..BatteryMonitorsnonotinitiatelperformanysafetyfunctionanddonotpreventthesafetyrelatedClass1E250VDCSystemfrommeetingitsminimumperformancerequirements.Thebatterymonitorsetpointchangesdonotincreasetheprobabilityofoccurrenceofconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Failureofthebatterymonitors,connectedtothebatterychargers,doesnotpreventtheClass1E250VDCSystemfrommeetingitsminimumperformancerequirement.FSARTable6.3-5hasevaluatedbatteryorbatterychargerfailure.thesetpointchangesdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyinSAR.PIIINo.ThemarginintheClasslE250YDCSystemisnotbythissetpointchangepackage.

95-159OntheTurbineBuildingClosedCoolingWater(TBCCW)inletandoutletofeachInstrumentAirServiceAirCompressorisinstalledadrainvalvewithaquickdisconnecthoseconnection.,Theseconnectionsareusedtofacilitatedrainingofthecompressorduringmaintenance.Thesepipingarrangementsarenotapartoftheoriginalskidsuppliedbythevendorandwereinstalledoutsideofthemodificationprocess.Drainplugswereinstalledas.partoftheoriginalcompressordesign.Thismodificationwilllegitimizetheexistinginstallationoneachcompressorskidandupdateconfigurationcontroldocumentation.SilhQdMY:No.BaseuponareviewoftheFSAR(Sections7.2,7.3,9.2,9.3,15,Question211.7),FireProtectionReviewReport(Section6.2),andSSESSafetyEvaluationReport(Section9.0,9.3,15.2),noaccidentanalyzedwillhavetheirprobabilityincreasedasaresultofthismodification(i.e.,theadditionofdrainvalves)becauseneithertheLossofInstrumentAir,ServiceAir,notTBCCWserveasan,initiatingeventforanaccidentanalyzedintheSAR.Therefore,thismodificationwillnotresultinanincreaseintheprobabilityofoccurrenceofanaccidentpreviouslyevaluatedintheSAR.NeithertheInstrumentAir,ServiceAir,norTBCCWSystemisasystemimportanttosafetyasdescribedintheSAR.ThismodificationmeetsallofthesamerequirementsfortheseexistingsystemsandthereisnochangetothefunctionoroperationofthesesystemsasdescribedintheSAR.Therefore,thismodificationwillnotresultinanincreaseintheprobabilityofamalfunctionofequipmenttosafety.InaccidentsanalyzedintheSAR,itisassumedthatInstrumentAirServ'iceAirarelost.Inaddition,componentswhichareessentialforsafeshutdownoftheplantandrequireInstrumentAirtofunctionaredesignedtoassumetheir"safeposition"uponlossofInstrumentAiroraresuppliedbysafety-relatedaccumulators.Therefore,tliismodificationtotheInstrumentAir.andServiceAirsystemswillnotresultinanincreaseintheradiologicalconsequencesofanaccidentpreviouslyevaluatedintheSAR.IINo.Thismodificationdoesnotaddto,eliminate,oralterthefunctionordesignbasisoftheInstrumentAir,ServiceAir,orTBCCWsystemasdescribedintheFSARSections9.2and9.3,nordoesitinteractwithanycomponentservedbyInstrumeritorServiceAir.ComponentsaddedbythismodificationarenotaprecursornoracontributortoanymalfunctionofequipmentoraccidentpreviouslyanalyzedintheSAR.Therefore,thismodificationwillnotresultinanaccidentormalfunctionofadifferenttypebeingcreated.IIINo.NeitherInstrumentAir,ServiceAir,norTBCCWareincludedintheSSESTechnicalSpecifications.Asstatedpreviously,componentsservedbyInstrumentAirareunaffectedbythismodification.Therefore,thismodificationdoesnotreduceanymarginofsafetywhichservesasthebasisforanyTechnicalSpecification.

95-160OC9.Ili2OntheTurbineBuildingClosedCoolingWater(TBCCW)inletandoutletofeachInstrum'entAirServiceAirCompressorisinstalledadrainvalvewithaquickdisconnecthoseconnection.Theseconnectionsareusedtofacilitatedrainingofthecompressorduringmaintenance.Thesepipingarrangementsarenotapartoftheoriginalskidsuppliedbythevendorandwereinstalledoutsideofthemodificationprocess.Drainplugswereinstalledaspartoftheoriginalcompressordesign.Thismodificationwilllegitimizetheexistinginstallationoneachcompressorskidandupdateconfigurationcontroldocumentation.Kh1hhhKINo.BaseuponareviewoftheFSAR(Sections7.2,7.3,9.2,9.3,15,Question211.7),FireProtectionReviewReport(Section6.2),andSSES'SafetyEvaluationReport(Section9.0,9.3,15.2),noaccidentanalyzedwillhavetheirprobabilityincreasedasaresultofthismodification(i.e.,theadditionofdrainvalves)becauseneithertheLossofInstrumentAir,ServiceAir,notTBCCWserveasaninitiatingeventforan.accidentanalyzedintheSAR.Therefore,thismodificationwillnotresultinanincreaseintheprobabilityofoccurrenceofanaccidentpreviouslyevaluated'intheSAR,CNeithertheInstrumentAir,ServiceAir,norTBCCWSystemisasystemimportanttosafetyasdescribedintheSAR.Thismodificationmeetsallofthesame'requirementsfortheseexistingsystemsandthereisnochangetothefunctionoroperationofthesesystemsasdescribedintheSAR.Therefore,thismodificationwillnotresultinanincreaseintheprobabilityofamalfunctionofequipmenttosafety.InaccidentsanalyzedintheSAR,itisassumedthatInstrumentAirServiceAirarelost..lnaddition,componentswhichareessentialforsafeshutdownoftheplantandrequireinst'rumentAirtofunctionaredesignedtoassumetheir'safeposition"uponlossofInstrumentAiroraresuppliedbysafety-relatedaccumulators.Therefore,thismodificationtotheInstrumentAirandServiceAirsystemswillnotresultinanincreaseintheradiologicalconsequencesofanaccidentpreviouslyevaluatedintheSAR.IINo.Thismodificationdoesnotaddto,eliminate,oralterthefunctionordesignbasisoftheInstrumentAir,Servic'eAir,orTBCCWsystemasdescribedintheFSARSections9.2and9.3,nordoesitinteractwithanycomponentservedbyInstrumentorServiceAir.ComponentsaddedbythismodificationarenotaprecursornoracontributortoanymalfunctionofequipmentoraccidentpreviouslyanalyzedintheSAR.Therefore,thismodificationwillnotresultinanaccidentormalfunctionofadifferenttypebeingcreated.IIINo.NeitherInstrumentAir,ServiceAir,norTBCCWareincludedintheSSESTechnicalSpecifications.Asstatedpreviously,componentsservedbyInstrumentAirareunaffectedbythismodification.Therefore,thismodificationdoesnotreduceanymarginofsafetywhichservesasthebasisforanyTechnicalSpecification.

ReplacethemotorandactuatorgearsetsinHV1/252FOOSA&BtochangetheOverallActuatorRatio(OAR)from52.56to84.No.Themodificationdoesnotincreaseintheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionaspreviouslyevaluatedin'heSARasfollows:Thevalve/pipingsystempressureboundaryandseismicCategory1qualificationarenotadverselyaffectedperFSARSections5.2and6,2.4,CoreSpray(CS)SystemlogicisnotchangedperFSARSection6.3and7.3valveshutoffcapabilityandseatleakageacceptancecriteriadescribedinFSARSections6.2.6and6.3.4arenotchanged,CSsystemperformanceinresponsetoallLOCAswillassureallmarginsofsafetyaremaintained,andthehydrauliccharacteristicsofHV-1/252F005A/BarenotchangedsothattheCSpumpscanpasstheirdesignflowrateasshowninFSARFigure6.3.75.Inaddition,theACdistributionsystemaddressedinFSARSection8.3isnotaffectedbythemodification.IINo.ThemodificationdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyanalyzedintheSARasdescribedbelow:TheeffectsofthemodificationarelimitedtoincreasingHV-1/252F005A/Bstroketimeandallowingthesevalvestostallforabout7secondsduringcertainnon-LOOPevents.Neitheroftheseeffectscreatethepossibilityofanewaccidentormalfunction.IIINo.Themarginofsafety'definedinTechSpecBasesB3/4.5.1andB3/4.5.2aridtheCSactuationinstrumentationinTechSpecSection3.3.3-3limitsfuelpeakcladtemperaturetobelow2200F.AreevaluationoftheLOCAanalyseshasdemonstratedthatthereisnegligibleeffectonreactorwaterlevelandnoeffectonfuelpeakcladtemperaturethroughoutallLOCAtimelines.Therefore,themarginofsafetydefinedintheaboveTechSpecsarenotreduced.TechSpec3/4.6.1.1(PrimaryContainmentIntegrity)ensuresthatthereleaseofradioactivematerialsisrestrictedtotheleakpathsandratesassumedintheaccidentanalyses.TechSpec3/4.6.1.2(PrimaryContainmentLeakage)ensuresthetotalcontainmentleakagevaluewillnotexceedthevalueassumedintheaccidentatpeakaccidentpressure.TechSpec3/4.6.3(PrimaryContainmentIsolationValves)ensuresthecontainmentatmospherewillbeisolatedfromtheoutsideenvironmentintheeventofradioactivereleaseorcontainmentpressurization.ThemodificationdoesnotreducethemarginofsafetyintheseTechSpecssincevalve/pipingpressureboundaryintegrityisnotaffected,seatleakagecriteriaisnotchangedandtheslightincreaseinstroketimeresultsinanegligiblechangeinlossofcoolantduetothepresenceoftheinboardcheck'valve.

95-162Thismodificationprovidesstuds,gratingclips,andfloorgratingandsupportsteeltosupportfloorgratingonElevation738intheUnit2PrimaryContainment.thegratingwasremovedduetonotbeingrestrainedsuAicientlytopreventitsdislodgmentduringtransients,norbeingsupportedadequatelytopreventpersonnelsafetyconcerns.No.ThefloorgratingaddressedbythismodificationispartofthePrimaryContainmentSystem,ReferenceFSARSections3.1.2.2.7,3.8.3.1.5,and3.6;DARSections1.4.1.2and6.1:1.Thegratingandgratingsupportsdonotserveanysafetyrelatedfunctionbutmustbeadequatelyrestrainedtowithstandcertaintransientsto.preventthemfrombecoming"missilesanddamagingsafetyrelatedcomponentsinthearea.ThemodificationwillassumethatallworkontheaffectedgratingwillconformtoalloriginalplantdesignandconstructioncodesandtherebypreventthepossibilityoftheproposedactionfromincreasingtheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.INo.TheproposedmodificationwillmeetallthedesignbasiscriteriaasspecifiedintheSAR.TheaffectedgratingandgratingsupportswillbedesignedandinstalledpertheoriginalrequirementsofexistinggratinginPrimaryContainmentandistherebyboundedbyanyexistingaccidentandmalfunctionanalysisand/orevaluations.Therefore,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypetharievaluatedpreviouslyintheSAR.IIINo.Thecomponentsaffected'bytheactionstakeninthismodificationarenotspecificallyaddressedinthebasisforanyUnit2TechnicalSpecification.ThePrimaryContainmentSystemisaddressedinTechnicalSpecificationSection3/4.6.1.Basedonthisandthefactthatthemodification.meetsallapplicabledesigncriteriaasspecifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-163DCP94-9064,Units1and2Providepermanent480VACpowerforUnit'1andUnit2refuelingactivities.Installnewpowerpanelsandassociatedreceptaclesonthe818'valuation.INo.Sinceallnewequipmentwillbeop'cratedwithindesignbasisrequirements,therearenoadverseeffectstotheexistingpowerdistributionsystem.Therefore,thereisnoincreaseintheprobabilityofoccurrenceortheconsequences'ofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheFSAR.IINo.Failureofthepowerfeedcablescouldultimatelyresultinthetripofnon-safetyrelated2B810633or2B260421loadcenters.Failureoftheseloadcentersdoesnotcreateadifferenttypeaccident/malfunction.Therefore,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.'ITheACpowersuppliesnecessarytomeetsafeshutdownrequirementsarelistednTech.Spec.Sections3/4.8.3.1and3/4.8.3.2.Loadcenters2B810and2B260arenotnecessarytoprovidepowerrequiredforoperationorshutdownoftheunitorformitigationoftheconsequencesofanaccident.Therefore,theproposedactionswillnotreduceanymarginofsafetyasdefinedin.thebasisforanyTechnicalSpecification.

95-164OCPiI.UidProvideaRefuelFloorWetliftSystemconsistingofthreesubsystems,'i.e.,WatertightHookBoxforSteamDryer/SteamSeparatorStrongback/SlingAssembly,MainSteamLine(MSL)PlugsincludingMSLPlugsRestraintRingandMSLPlugsI/RToolandRigidPoleHandlingSystemfortheReactorPressureVessel(RPV)disassemblyandreassemblyactivitiesduringtherefuelingoutages.forUnits1and2.No.NoaccidentsormalfunctionsintheFSARarespecificallyrelatedtothedisassemblyandreassemblyoftheRPVortheRefuelFloorWetliftSystem.However,accidentsconcerningfuelhandlingloaddropsoverfuelaredescribedinFSARSection-15.7.4.OtherloaddropaccidentshavebeenevaluatedinresponsetoNUREG0612andhavebeenperformedunderguidelinesofPP&L'sHeavyLoadsProgramwhichhasbeenreviewedandacceptedbytheNRC,thereby,formingpartofthe'licensingbasisforSSES.Theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.IINo.TheonlyaccidentsormalfunctionsthatcouldresultbytheuseoftheRefuelFloorWetliftSystem.wouldbealoaddropasdiscussedabove,coolantleakagethroughtheMSLPlugs,orcrosstyingofHVACZones.MSLPlugsaredesignedtoremainintactduringaseismic'eventandlimitleakagetobewellwithintheavailablemakeupcapability.Also,potentialcrosstyingofHVACZonesduetoMSLPlugs'entandfillhoseswillbetrackedandaccountedforbyprocedures.Therefo're,thepotentialforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSARdoesnotexist.No.TheTechnicalSpecificationsdonotaddresstheuseoftheRefuelFloorWetliftSystemorotheractivitiesinvolvedwiththedisassemblyandreassemblyoftheRPV.BasisforTechnicalSpecificationSections3/4.9.8and3/4:9.9addressthewaterlevelsintheReactorCavityandSpentFuelStoragePools.Administrativecontrolsandavailablemakeupcapabilitywillassuretherequiredwaterlevelismaintainedintheeventofthepostulatedaccidentdiscussedabove.ThebasisforTechnicalSpecifications3/4.9.6doaddressthehandlingoffuelorirradiatedcomponentswithintheRPVusingtheRefuelingPlatform.AdministrativecontrolsprohibituseofRigidPoleHandlingSystemforhandlingfuelassemblyanywhereorhandlingcontrolbladesintheRPV.TheproposedactionsdonotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications.

Thepurposeofthisprocedureistoallowtieintemporary'outagechiller(s)'totheReactorBuilding'hilledWater(RBCW)SystemduringaUnit1Outage.h5hKY;No.Sections9.2.12.3ReactorBuildingChilledWater"and9.4.2ReactorBuildingVentilationwerereviewed.TheFSARdoesnotspecificallyaddresstheaffectedplantsystemsduringoutageconditions.However,installationofthistemporarysystemwillnotimpactoperationofPrimaryContainmentIsolation,theonlysafetyfunctionoftheRBCWSystem.NormaloperationoftheReactorBuildingVentilationSystemwillnotbeimpactedbyinstallationofthetemporarychiller.Additionally,installationofthisequipmentwillnotimpactSecondaryContainmentrequirements.Therefore,thisactivitydoesnotincreasetheprobabilityorconsequencesofanaccidentpreviouslyevaluatedintheFSAR.IINo.,Theinstallationofthistemporarysystemdoesnot'adverselyimpacttheoperationorsafetyfunctionofanyexistinginstalledequipment.Theonlynewfailurepossiblewouldbefailureofthetemporarysystemitself.Ifthetempprar'ychiller(s)failedtoprovidecooling,therewouldbenonewaccidentcreatedsincethisfailureisboundedbyfailure'oftheReactorBuildingChillersduringplantoperation.IIINo.TechSpecSections3.6.3,3.6,1.7and3.6.5.1havebeenreviewedandarenotaffectedsincetheinstallationandoperationofthetemporarychiller(s)willbeduringConditions4.5,ordefueled.Therefore,themarginofsafetyisnotreducedforanyTechnicalSpecificationbasis..

95-166Thismodificationinstallsapermanentsupport(guide)onaverticallyrunspanof2SPjBD288-1pipingbetweensupportsSPjBD288-H2603andjBD288-H17.Thispipingwasdiscoveredtobeinsufficientlyrestrainedandtheadditionofthissupport/guidewillpreventitfrombecomingoverstressedduringtransientevents.No.TheaffectedpipingispartoftheLiquidRadwasteProcessingSubsystem(FSARSection11.2.2.2)oftheLiquidWasteManagementSystem(LWMS)asdefinedinFSARSection11.2.PerFSARSection11.2.1,DesignBases,TheLWMShasnonuclearsafetyrelatedfunctionasadesignbasis;therefore,theaffectedcomponentshavenosafetyrelatedfunction.TheLWMShasnoSafetyFunctionsandisseparatedfromtheReactorVesselandAccessoriesSystem(theReactorHeadVentLineisASMESectionXI)byanchorSPJBD-,H2603.ThisboundaryanchorisnotadverselyaffectedbytheadditionofthenewsupportontheLWMS,and,infact,willhaveitsintegrityimprovedbyreducingthepipingloadsonit.ThismodificationdoesnotalterthedesignbasisoroperationasdescribedwithinFSARSection11.2.1,LiquidWasteManagementSystems".Themodificationcreatesnoadverse'changetosystemoperationorfunction;itwill,however,enhancethepipingsystem'sintegrity.ThepossibilityofapiperupturehasbeenevaluatedagainsttheAccidentAnalyzesinChapter15oftheFSAR,specificallySection15.7.2-LiquidRadwasteSystemFailure.ThechangesmadetotheLWMSdonotalterthesystem'operationasdiscussedaboveandnosafetyrelatedfunctionofanysystemassociatedwiththeLWMSwillbeaffected.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceor'theconsequencesofanaccidentormalfurictionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.No.ImplementationofthismodificationwillnotchangethenormaloperationoftheLiquidRadwasteManagementSystems,specificallytheLiquidRadwasteProcessingSubsy'stem.Thesystemwillcontinuetooperateinaccordancewithitsoriginaldesignbases;andthepipingmodificationscomplywiththeoriginalconstructioncodes(ANSIB31.1)andregulations.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR:IIINo.TheTechnicalSpecificationsectionsthatareapplicabletotheLiquidRadwasteProcessingSubsystemare3/4.11.1.1,3/4.11.1.2,and3/4.11.1.3.TheadditionofanewpipesupportenhancestheintegrityofthatportionoftheLRWprocessingpiping.Thismodificationdoesnotchangethepipingconfigurationnoradverselyaffectsystemoperationandwillremaininaccordancewiththesystem'soriginaldesignbasis,constructioncodes,andregulatoryrequirements.Noneofthesemodificationsaffectstheconcentrationofradioactivematerialsreleasedintheliquidradwasteeffluents(Reference3/4.11.1.1),northedosesoftheradioactivematerialinthoseeffluents(Reference3/4.11.1.2),northeoperability/availabilityoftheLRWProcessingSubsystem(Reference3/4.11.1.3),andtherefore,willnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-167ChangesetpointsforNonClass1ESecurity125VDCBatteryBus'OD572UndervoltageRelay27<D572andAuxiliaryTimeDelayRelay27XZD572.BUhRlhRY;INo.SecuritynonclasslE125VDCBatteryBusOD572UndervoltageRelay27-0D572andTimeDelayAuxiliaryRelay27X-OD572donotinitiate/performanysafetyfunctionanddonotpreventanysafetyrelatedSystemfrommeetingitsminimumperformancerequirements.Thesetpointchangesdonotincreasethetheprobabilityofoccurrenceofconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.I'ailureoftheUndervoltageRelay27-OD572andtheAuxiliaryTimeDelayRelay27X-OD572donotpreventClass1E125.VDCSystemfrommeetingitsminimumperformancerequirement.FSARTable6.3-5hasevaluatedClasslEbatteryorbatterychargerfailure.Security125VDCBatter'yOD570isnonClasslE.'hesetpointchangesdonotcreateapossibilityforanaccidentormalfunctionofadifferent'typethananyevaluatedpreviouslyinSAR.IIINo.ThemarginofsafetyintheClass1E125VDCisnotaffectedbythissetpointchangepackage.

95-168ThescopeofthisprojectistoprovidetheinstrumnetationonUnit1RecirculationandRHRpipingwithinprimarycontainmentthatwillprovidenecessaryinformationtoassessthedynamicresponseofpiping,valvesandotherassociatedcomponents.No.Thisvibrationinstrumentationsystemprovidesnoplantcontrolorprotectivetrip'unction.Itcollectsandanalyzesdynamicinputsignalswhiletheplantisoperatingintransientorsteady-statemodes.Itisnotrequiredtoassuresafeshutdownormitigatetheconsequencesofdesignbasisaccidents.Thevibrationinstrumentationsystembynatureofitssmallsize,lowmass,lowlevelsignalsandmeansofattachmentofexistingreactorrecirculationandRHRpipingvalvesdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.IINo.Thenewaccelerometersandsupportinghardware,althoughattachedtothepipeandvalves,donotintrudeonthereactorcoolantpressureboundary.'Failureoftheinstrumentationsystemdoesnotinvolveachangeinsystemoperationoraddadifferentfailuremodewhichwouldaffectthisevaluation.IIINo.Thevibrationmonitoringsystemhasnoeffectontheoperationofthereactorrecirculationsystem;'RHRsystemnordoesitimpairthefunctionallyoftheECCSstrainers.ItisthereforeconcludedthatinstallationofthevibrationmonitoringsystemwillhavenoimpactontheTechnicalSpecificationsanddoesnotaffectthemarginofsafetydefinedinthebasisforTechnicalSpecification.

DCP94-3015694-3016,Units1,2andCommonThismodificationreplacestheexistingcomputersystemsandfunctionswithanewupdatedintegratedplantcomputersystem(PICSY).No.ThefunctionsandanalysesofPICSYarethesameasthefunction'sandanalysesdescribedinFSARSection7.7fortheindividualsystemsthatarebeingreplaced.Chapters3,7,8,9,15,.and18oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisandNUREG<776werereviewedtodetermineiftheproposedactionhasaneffectonthespectrumofpostulatedinitiatingeventsforwhichtransientsoroperationaloccurrencesandaccidentconditionswereanalyzed.ThereplacementofthePlantComputersdoesnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapters3,7,8,9,15,and18oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisandNUREC<776.No.Areviewofchapters3,'6,7,8,9,15,and18oftheFSARdidnotidentifyanypostulatedinitiatingeventthatwouldcreatethepossibilityofanaccidentofadifferent'ype.ThepossibilityofanaccidentofadifferenttypethananypreviouslyevaluatedintheSARwillnotbecreated.ThesystembeingutilizedforthismodificationwillnotcreatethepotentialforanytypeofaccidentsincethefunctionsandanalysesofPICSYarethesameasthefunctionsandanalysesdescribedinFSARSection7.7fortheindividualsystemsthatarebeingreplaced.ThePICSYequipmentinstallation'doesnotchangethefunctionalinterfacewith~operatingplantsystems.Potentialissuesofsafetyimpact,combustibleloading,AppendixR,firedetectionandsuppression,electricalseparationhavebeenaddressedinthedesign.Therefore,thePICSYinstallationdoesnotcreatethepossibilityofamalfunctionofadifferenttype.No.PICSYequipmentandfunctionsarefullyconsistentwithpreviouslyexistingcomputerequipmentandfunctionsandbymeetingtheserequirements,thesechangesdonotimpactthemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.Theplantcomputersarenotrequiredtofunctioninordertosafelyoperate,startup,ortaketheplanttoasafeshutdowncondition.TechnicalSpecificationsection3/4.1,3/4.2,3/4.3,3/4.6,3/4.?,3/4.8,3/4.10andtheirbaseswerereviewedinmakingthisdetermination.

95-1?0TheproposedactionistoincreasetheinstantaneousmagnetictripsetpointoftheClasslELoadCenterbreakers2B21021and2822021sothatthebreakerscoordinatewiththeNon-Class1Ebreakersin.theSPDSUPS2D288and2D289.K'INo.Chapters6and15oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisandNUREC<776werereviewed.TheincreasingoftheinstantaneousmagnetictripsetpointoftheClasslELoadCenterbreakers2B21021and2B22021doesnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapter6and15oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisofNUREC0776.TheincreasingoftheinstantaneousmagnetictripsetpointoftheClass1ELoadCenterbreakers2B21021and2B22021doesnotrepresentachangeintheprobabilityofoccurrenceofamalfunctionoftheequipment.Thechangingofthetripsetpointofthebreakerdoesnotchangetheprobabilityoffailurethebreaker.Theconsequencesofanaccidentisnotchangedbytheproposedaction.TheincreasingoftheinstantaneousmagnetictripsetpointoftlieClass1ELoadCenterbreakers2B21021and2B22021doesnotaffecttheactuationofthebreakertripcircuitry.TheincreasingofthetripsetpointassurestheMCCs2B216and2B226areoperableforfailuresintheSPDSUPS2D288or2D289.IINo.,Theproposedactiondoesnotcreatethepossibilityofamalfunctionofadifferenttype.TheinstantaneousmagnetictripsetpointforClass1ELoadCenterbreakers2B21021or2B22021isappliedinaccordancewithexistingapprovedplantprocedures.TheconsequencesofarandomsinglefailureofeitherLoadCenterbreaker2B2102.1or2822021isthesameastheexistingconsequences.Thereviewdidnotidentifyapostulatedinitiatingeventwhichwouldcreatethepossibilityforanaccidentofadifferenttype.IIINo.TheLoad'Centers2B210and2B220,breakers2B21021and2B22012andMCCs2B216and2B226arepartoftheOnsiteACPowerDistributionSystemwhoseoperabilityisgovernedbyTechnicalSpecificationSections3/4.8.3entitled"OnsitePower'DistributionSystems.ThebasesforoperabilityoftheLoadCenters,thebreakers-andtheMCCsaretoensurethatsufficientpowerifavailabletosupplythesafetyrelatedequipmentrequiredforthesafeshutdownofthefacilityandmitigationandcontrolofaccidentco'nditions.withinthefacilityduringoperation.ThebasesforoperabilityoftheLoadCenters,thebreakersandMCCsduringshutdownandrefuelingistoensurethatthefacilitycanbemaintainedintheshutdownorrefuelingconditionforextendedtimeperiodsandsufficientinstrumentationandcontrolcapabilityisavailableformonitoringandmaintainingtheunitstatus.Theproposedactiondoesnotaffecttheoperabilityrequirements,surveillancerequirementsoranyexistingmarginofsafetydefinedinTechnicalSpecificationSection3I4.8.3.

95-171ThismodificationenhancestheoperationoftheLiquidRadwasteFilters(OF302A&B),asdescribedinFSARSection11.2.2.2.Themodificationreplacesexistinghighandlowlevelsensorswithmorereliablesensors,installsaredundanthighleveloverfillcontrolandinstallsanewanaloglevelindicationsystem.No.Theproposedmodificationdoesnotimpactanystationdesignfeatures(suchaslimitsontanksizes,operatingprocedures,radiationmonitoringcapability,etc.)thatareusedinradioactivereleaseanalysisforpostulatedradwastesystemfailures.AllpressureboundarychangesaredesignedandinstalledinaccordancewiththeGroupD(Augmented)qualityassurancerequirements.Therefore,noconcernsareraisedbythischangeoveranincreaseintheprobabilityofvesselorassociatedpipingfailure.FailureanalysisfortheproposedchangesthuswouldbeenvelopedbytheAccidentAnalysis,"PostulatedRadioactiveReleasesduetoLiquidRadwaste'TankFailure,(FSARSection15.7.3).Theproposedcontrollogicchangesreducetheprobabilityofmisoperationof.theliquidradwastesystemandprovidemorereliableinformationtotheoperator.II.No.WorstcasescenariosforanyaccidentormalfunctionoftheradwastesystemhavebeenconservativelyanalyzedintheFSARSection15.7.3.Theproposedchangesdonotinvolveachangeinsystemoperationoraddamoreseveretypeoffailure'odewhichwouldhaveaneffectonthisevaluation.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification3.11.1.3relatesonlytoliquidwastesystemoperability.Thismodificationwillprovideanupgradingoftheexistingfilterlevelinstrumentation.Thesechangeswillnotdegradecurrentsystemoperability.Theyaredesignedtoenhanceoperability.TheproposedchangehasnoimpactontheTechnicalSpecification,andwillnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-172TheactionproposedistodocumentthecurrentReactorWaterCleanup(RWCU)PenetrationRoomsupplyregisterlouverpositionviatheBypassProgram.This'Bypass(es)willremainineffectuntilalongtermsolutionisimplemented.SUJHldBEY;INo.TheSteamLeakDetectionSystemmonitorsthedifferentialtemperatureintheRWCUPenetrationRoom.Uponadifferentialtemperatureof39'F,aRWCUSystemisolationisinitiated.SincetheSteamLeakDetectionSystemisamonitoringsystemonly,theproposedactiondoesnotincreasetheprobabilityofanyaccidentdiscussedinChapter15.Withthesupplyregisterlouversadjusted,itisnotpossibletodetecta25gpmleakunderthedesignbasissummerconditions.Theestimateddetectableleakrateis30-55gpmwithin24hours.Theradiologicalconsequencesofa50gpmRWCUleakfor48hourswascalculated.ThiscalculationwasveryconservativeinthatitassumedthemaximumEquivalentIodineI-131concentrationintheprimarycoolant,andnocreditwastakenforfiltration,holdup,ordecay.ThecalculateddoseiswellbelowthosecurrentlystateFSARTabje15.6-18'LossofCoolantAccidentRadiologicalEffects'herebyensuringboth10CFR100offsitedochlimitsand10CFR50,AppendixA;GDC-19controlroomdoeslimitsaremet.Duetotheconservativeassumptionsinthiscalculation,itboundstheproposedaction.No.TheproposedactiondoesnotaffectanysystemsotherthanDifferentialTemperatureSteamLeakDetectionintheRWCUPenetrationRoom.TheproposedactionwillensurespuriousisolationsofRWCUcanbeavoided,whichistheprimarydesignbaseconsideration.Theexistingsetpointandlouverpositionshouldbecapableofdetectingleaksintherangeof30-55gpm.TheconsequencesofthissizeleakhavebeenevaluatedandareboundedbytheSteamLineBreakanalysisinFSARSection15.64andtheDesignBasisAccidentanalysisinSection15.6.5.IIINo.ThebasesfortheSteamLeakDetectioninstrumentationisdescribedinTechSpecSection3/4.3.2.TheabovelisteddesignbasisisdifferentthanthatposedbytheNRC,inthatthedetectableleakrateshouldnotbebasedsolelyonthecriticalcracksize,butrathersethighenoughtoavoidspuriousisolation.Theproposedactionmeetstheprimaryde'signbaseobjectiveofavoidingspuriousisolation.Theexpecteddetectableleakis30-55gpmduringworstcasesummeroperation.TheradiologicalconsequencesofthissizeleakduringthedesignconditionsdoesnotexceedthecurrentFSARoffsiteorcontrolroomdoseprojections.Whileitistruethattheproposedactionreducesthemarginofsafetyregardingleakdetectioncapability,itisincreasesthemarginofsafetyregardingavoidanceofspuriousisolationsandchallengestoplantoperations.TheproposedactionensuresthattheSLDsystemwillfunctionproperlyandmeettheprimarydesignobjectivewhilestillbeingcapableofdetectingaleakassmallaspossible.Therefore,itcanbeconcludedthattheoverallmarginofsafetyhasbeenincreased.

95-173C9ThismodificationwillprovidetheUnit1SafetyParameterDisplaySystem(SPDS)softwarechangesidentifiedinthePowerUprateProjectwhicharenotpartof,orincludedinotherPowerUprateProjectDesignChangePackages,andalsowilldefinethetestingrequiredtoassuretheoverallSPDSfunctionalitypostPowerUprateProjectmodifications.INo.TheSPDScomputersandsoftwarearenotsafety-relatedanddonotimpactanyFSARanalysis.InaccordancewithNUREG737,Supplement1,theSPDSanditsdisplaysaredesignedusinghumanfactorengineeringprinciplesandvalidatedbytestingtoensurethatthedisplayedinformationisvalidandcanbereadilyperceivedandcomprehendedsoasnottomisleadtheoperator.ThismodificationupdatesthealarmlimitschangedbyPowerUpratesothatthevalidityofthedisplayedinformationisnotaffected.Therefore,themodificationdoesnotincreasetheprobabilityofoccurrenceorconsequences.ofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheSAR.IINo.Thefailuremodesafterthismodificationremainthesame,forthesamesystems,as'hatbeforethemodification.ThemodificationwillinnowayaffecttheavailabilityofSPDS.Therefore,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheSPDSdisplaysareusedbytheShiftTechnicalAdvisor(STA)andothercontrolroomOperationspersonnelasaquickindicationofthereactorstateinrelationtothevariousEOPlimits,aswellastrendsofreactorparameterseithertowardorawayfromtheselimits.SPDSdisplaysdonotreplacetheuseoftheactualEOPproceduresandsafetyrelatedinstruments.BecausetheproposedsoftwarechangestoSPDSdonotaffectanysysf'emsorfunctionsaddressedintheTechnicalSpecifications,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-174Thisevaluationdocumentsthesafetyaspectsregardingarevisiontothequantitiesofunqualifiedpaintinthecontainments.SLlkRlhRY:No.Section6.1.2oftheFSARdiscussesthequantities,types,andqualityclassificationofcoatingsinstalledintheSSEScontainments.ItalsodescribesthepotentialimpactofcontainmentcoatingsonECCSsystemsafetyfunctionsfollowingaDBA.InnowaydocontainmentcoatingsimpacttheinitiationofaDBAorincreasetheprobabilityoftheoccurrenceofanaccident.'ollowingaDBA,paintfailurecanoccurintheformofparticulate,chipsorflakes.Thedebriscanbeintroducedtothesuppressionpool,becomesuspendedinthepoolwaterandbedrawnontotheECCSsuctionstrainers'.Flowblockagecouldresult.Smallerquantitiesofunqualifiedcoatingsreducetheamountsofpotentialpost-LOCAdebris.AreductionofdebrisreducesthepossibilityofECCSsuctionstrainerflowblockage.ReducingthepotentialforECCSsuctionstrainerf)owblockagereducestheconsequencesofanaccident.IINo.Section6.1.2discussestheimpactsofcoatingsonECCSsystemfunctionsfollowingDBA.Containmentcoatingscancontributetopost-LOCAdebris.DebriscancauseECCSsuctionstrainerblockage.Areductionintheamountofcoatingthatcancontributetopost-LOCAdebrisreducesthepossibilityofsuctionstrainerblockageand,therefore,reducesthepossibilityofECCSmalfunction.Areductionintheamountofunqualifiedcontainmentcoatingwillnotcauseamalfunctionofadifferenttypethanpreviouslyevaluated.Containmentc;oatingsdonotcreateorcauseanyoftheaccidentsdisc'ussedintheFSAR.Thereductioninthequantitiesofunqualifiedcontainmentcoatings,donotcreatethepossibilityforanaccidentormalfunctionnotalreadyevaluatedintheFSAR.IIINo.TheTechnicalSpecificationsdonotdiscusscontainmentcoatingsortheirimpactontheconsequencesofaccidentsorECCSsystemoperability.WithrespecttoareductioninthequantityofunqualifiedcoatingintheSSEScontainment,theabovequestionisriotapplicable.Theunqualifiedcoatingsreduction,however,increasesthemarginofsafetyassociatedwiththeoperabilityoftheECCSsystemsandtheSuppressionPoolasdefinedinSection3/4.5.1through3/4.5.3.Thereducedquantityofunqualifiedcoatingsreducesthepotentialquantityofpost-LOCAdebris.Less'debrisfollowingaDBAreducesthepossibilityofECCSstrainerflowblockage.Therefore,theactionsincreaseratherthanreducethemarginofsafetyassociatedwiththeoperabilityoftheECCSsystemsandSuppressionPool,asdescribedinthebasisoftheTechnicalSpecifications.

95-176ThischangerevisesthetwosetpointsfortheReactorManualControlRodPowerandAlarmFirstStageTurbinePressurealarmunitsP&C12-1N654AandPS-C12-1N654BaccordingtoGeneralElectricReport,Susquehanna'SteamElectricStationSetpointsforPowerUprate,"GE-NE-901<26-0592.51lh1hlhlE:INo.FSARSections4.1.3,4.1.6.1.2.6,7.1,7.6,7.7andChapter15werereviewed.TheproposedactionincludesadjustingtheLPSPandLPAPsetpointsofP~12-1N654AandP&C12-1N654Bforpoweruprateconditionsusingmorerealisticturbinefirestagepressureversusreactorpowerdata.Therevisedsetpointsprovideadequatemargintotheallowablevaluesforpoweruprateconditions.Thissetpointchangedoesnotchangethefunctionorperformanceoftherodsequencecontrolsystemoranyequipmentorcomponentsassociatedwiththesedevices.Inaddition,thesedevicesarenotrequiredtomitigateanyaccidents.Therefore;theproposedactiondoesnotincreasetheprobability,ofoccurrenceortheconsequencesofanaccidentormalfunctionofequipment,aspreviouslyevaluatedintheFSAR.IINo.ChangingtheprocesssetpointofP&C12-1N654AandPS-C12-1N654B,RMCSPowerandAlarmFirstStageTurbinePressureinterlocksdoesnotchangethefunctionorperformanceoftheinstruments,andthissystemisnotusedinanaccident.Therefore,itdoesnotcreatethepossibilityofanaccidentofadifferenttypethanpreviouslyevaluatedintheFSAR,nordoesitcreateapossibilityfoimalfunctionofadifferenttypethananypreviouslyevaluatedintheFSAR.IIINo.~PlantTechnicalSpecificationSections3.1.4.2and4.1.4.2statethattheRSCSmustbeoperableinoperationalconditions1and2whenthermalpowerislessthanorequalto20%ofrated.Theminimumallowablelowpowersetpointis20%ofratedthermalpower.Thesetpoint'isestablishedtoprotectagainstexceedingtheanalyticallimitof20loaspowerreferencedintheaboveTechnicalSpecification.SincethenewsetpointisincompliancewiththeTechnicalSpecification,theproposedactionwillnotreducethemarginofsafetyasdefinedinthebasisoftheTechnicalSpecification.95-177,uThepurposeofthisSafetyEvaluationistoaddresstheuseofUnit2'ServiceWatertocoolUnit1TBCCWHeatExchangers,whichisadeparturefromnormalplantdesignandoperatingphilosophy.No.FSARsection9.2.3.3statesthat'SincetheTBCCWsystemhasnosafety-relatedfunction,failureofthesystemwillnotcompromiseanysafety-relatedsystemorcomponentorpreventasafeshutdownoftheplant.FSARsection9.2.1.3statesthatTheSWSoperationhasnosafetyrelatedfunctionandfailureofthesystemwillnotcompromiseanysafetyrelatedsystemorcomponentorpreventasafenuclearshutdown."TheactionsofthisprocedurehavethepotentialtoadverselyaffectUnit162'operatingsystemsviathedevelopmentofaleakofUnit2ServiceWaterinthetemporaryfiowpath,butthemargintodesignvaluesandthecontrolsofthetestandotherplantoperatingprocedures'areadequatetoaccommodatetheseactionsandpotentialactions.Therefore,theperformanceofTP-115%09doesnot'increasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety;aspreviouslyevaluatedintheSAR.IINo.TheactionsofthisprocedurehavethepotentialtoadverselyaffectUnit182operatingsystems,butthemargintodesignvaluesandthecontrolsofthetestandotherplantoperatingproceduresareadequatetoaccommodatetheseactionsandpotentialactions.Therefore,theperformanceofTP-11509doesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.PerformanceofthisproceduredoesnotreducethemarginofsafetyasdefinedinthebasisofanyTechnicalSpecification.Theactivitiesofthisprocedure,whichdivert40-50gpmfromUnit2ServiceWaterattheUnit2TBCCWHeatExchangers,areexpectedtobeaccommodatedbytheUnit2Servicewatersystemduetothelargemargintodesignflowvalues,FieldexperiencefromtheperformanceofTP-115-008,TemporaryFlowTestofTBCCWHeatExchangers,supportsthisconclusion.

95-178EO-100/200-102,RPVControl,isrevisedaspartofthepoweruprateproject.No.Sections7.3.1.1A.1.4,6.3.2.2.1,werereviewed.ManualcontrolofADS,BypassofHPCIAutoSectionTransfer,LargeandSmallBreakLOCAandBypassofRCICLowSteamPressureIsolationwerereviewed.Thisactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSAR.IINo.Asstatedabove,theissuesofconcernassociatedwiththeimplementationofEX-100/200-102arethemanualcontrolofADS,theauthorizationtouseHPCIwithsuctionfromtheCST,bypassinghighsuppressionpoolwaterlevelinterlocksasnecessary,andtheauthorizationtouseRCICwithitslowsteamsupplypressureisolationbypassed.EachoftheseissueswasreviewedanddoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.No.ThebasisforTechnicalSpecification3.5.1(ECCS)indicatesthatuseofADS(givenHPCIfailure)forsmallbreakLOCAwilllimitfuelcladdingtemperaturetolessthan.2200'F.UseofADSasspecifiedintheBM!ROGEPG(whichisthebasisforEO-100/200-102,aswellasotherSSESEOPsteps)alsolimitsfuelcladdingtemperaturetolessthan2200'F.'hustheMarginofSafetyisnotreduced.'ITheauthorizationtooperatesHPCIwithit'sautomaticsuctionswaplogicdefeateddoesnotreducetheMarginofSafetyinanyPlantTechnicalSpecificationbasis.Aswasmentionedabove,useofHPCIinthismanner(autoswapoverdefeatedwhenSPtemperature)140'F)willnotproduceSuppressionPoolwaterlevelsinexcessofTechnicalSpecificationlimitsforeventswhichfallwithintheplantdesignbasis.ThedirectiontooperateRCICwiththelowsteamsupplypressureisolationlogicdefeateddoesnotreducethemarginofsafetyinanyplanttechnicalspecificationbasis.Aswasmentionedabove,useofRCICinthismannerisnotexpectedtooc'curforeventswhichfallwithintheplantdesignbasisen'velope.Inaddition,theFSARsafetyanalysisdoesnotreplyontheuseofRCICforaccident.mitigationpurposes.Asalreadydiscussed,defeatingthissingleinputtotheRCICsteamleakdetectionlogiciscompensatedforbyEOPdirectionregardingtheconditionsforwhichmanualRCICsteamlineisolationisappropriate.

95-179EO-100/200-113,Units1and2SafetyevaluationofEO-100/200-113,Level/PowerControl"whichprovidesproceduralguidanceformitigationofATWSevents.No.AlthoughSection15,8oftheFSARpresentsabriefdiscussionofATWS,thisaccidentisbeyondtheplantdesignbasis,andthereforethissectionoftheSafetyEvaluationisnotapplicable.IINo.Theproposedactions(EO-100/200-113)areonlyexecutedafteranATWSeventhasoccurred.Therefore,theseactionsareonlyexecutedwhentheplant-isinaconfigurationwhichisbeyondthedesignbasis.Consequently,thisSectionoftheSafetyEvaluationisnotapplicable.ItlNo.TheproposedactionsdonotaffectanyTechnicalSpecificationrequirements.EO-100/200-113onlyspecifiesoperatoractionsthatwouldbecarriedoutwiththeplantinaconfigurationwhichisbeyondthedesignbasis..

95-180Thismodificationeliminatesapotentialfailuremode(releaseofnonwondensategasesinreferencelegduringRPVdepressurization)forthewaterlevelinstruments.INo.TheproposedactionwouldnoTincreasetheprobabilityofoccurrenceofanaccidentorequipmentmalfunctionbecauseitonlyprovidesmitigatestepswhicharecarriedoutaftertheaccidenthasalreadyoccurred.EO-100/200-114specifiesoperatoractionswhichcouldbecarriedoutduringalarge~breakLOCAwhichhasbeenanalyzedintheFSAR(Section6.2.1.1.3.3)..However,foralarge-breakLOCA,thereactorpressurecouldnotbemaintained66psiabovesuppressionchamberpressure,andthisprocedurewouldbeexitedatStepRF-9.Therefore,thisproceduredoesnotincreasetheconsequencesofthelarge-breakI.OCAbecauseitdirectsoperatoractiontoanotherprocedure(ContainmentFlooding,EO-100/200-115)'whichhasbeenreviewedforunresolvedsafetyquestion.No.'heproposedactionsdonotcreateapossibility,foranaccidentormalfunctionof'adifferenttypethananyevaluatedpreviouslyintheSARbecausethisprocedureonlyspecifiesoperatoractionswhicharecarriedoutonceanaccidentinvolvinglossoflevelindicationhasoccurred.Furthermore,thepurposeofthisprocedureistoensureadequatecorecoolingwhenlevelindicationisnotavailable.Thisprocedureprovidesguidancewhichensuresadequatecorecoolingsotheproposedactionswouldnotcause'theplantconditiontoprogressintosomepreviouslyunanalyzedaccidentcondition.IIINo.TheRPVFloodingprocedurespecifiesrequirementswhichmustbesatisfiedbeforeinjectiontothevesselcanbeterminated.TheserequirementsarelistedinStepRF-11.Adequatecorecoolingisassuredwhenthe'activecoreiscoveredwithliquidortwo-phasemixture.TherequirementsspecifiedinstepRF-11preventterminationofinjectionbeforetheRPVisfloodedabovethetopofactivefuel.TechnicalSpecification2.1.4statesthatRPVwaterlevelshallbemaintainedabovetopofactivefuel.EO-100/200-114doesnotspecifyanyoperatoractionswhichwouldleadtoviolationofthisTechnicalSpecificationwheneverwaterlevelindicationisavailable.

95-181TheproposedactionwillinhibittheoperationoftheKT106RelayintheAlarmandTripCircuitoftheMainTurbineEHCforthepurposeofreplacement.INo.TemporarilybypassingandchangingouttheKT106CardinPanel1C663BayDdoesnotincreasetheprobabilityorthe"'consequenceofanaccidentoramalfunctionofequipmentimportanttosafety.Duringthepe'riodthecardisbypassedandchangedallotherTurbineProtectionfeaturesarefunctionalaswellasOperatoravailablefeaturestoperformamanualtrip.NoinputstoRPSareaffectedduringthisproposedaction.PFSAR7.2.1.1.4.2d5eReactorTripSystemInitiating'Circuits,withrespecttoMainTurbineStopValveandControlValvesandsubsequentincreasesinReactorpressure,wasreviewedandtheproposedactiondoesnotaffectorchangethatanalysis.FSAR10.2.1wasreviewed.EHCduringthisproposedactionwillstillbecapableofcontrollingspeed,load,steampressureandsteamflowunderstartup,shutdown,transientandsteadystateconditions;therefore,thisproposedactiondoesnotaffectthatanalysis.IINo.AlthoughtheproposedactiondefeatsoneoftheMainTurbineprotectivefeaturesforashortperiodof'time,thereareredundantfeaturesoftheTurbineprotectionsystemwhichwillperformthesamefunction.WithrespecttotheFSARSectionsreviewed,itisconcludedthattheproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalSpecification3/4.7.8forMainTurbineBypassValvesand'3/4.3.8forMainTurbineOverspeedProtectionSystemwerereviewedan'ditisconcludedthattheproposedactionwillhavenoaffectonthe.marginofsafetyaspreviouslyevaluated.Therefore,theproposedactiondoesnotreducethesafetymarginasdefinedinthebasisforanyTechnicalSpecification.

95-182DCP-94-5000,UnitCommonWiththismodification,,theresponsibilityforthedailySecurityData'ManagementSystem(SDMS)archivewillshiftfromtheSecurityControllerstopersonnelfromtheNSEComputerGroup.INo.TheproposedchangesdonotfunctionallychangetheoperationofthephysicalSecurityComputerSystem.Theyonlyservetomakeitmoremaintainableandreliable,TheSSESPhysicalSecurityPlan(FSARSection13.6)doesnotidentifytheSecurityComputerSystemasasafetysystemnorasasystemrelatedtosafety.Implementytionoftheproposedactionwillnotaltertheintentofthecomputer-basedSDMS.Theproposedactionhasbeendeterminedtobenon-qualityrelatedandnon-safetyrelated,accordingtothedefinitionsintheQAprogram.'IIINo.Theproposedactionisasoftwarechangewhichdoesnotchangethe'functionoftheSecuritySystem.TheSecurityComputerSystemcannotcontrolplantfunctions.TheactiondoesnotaffecttheabilityoftheSecurityComputerSystemtomonitoractualorpotentialsecurityviolations.Therefore,itdoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanevaluatedpreviouslyintheFSAR.IIINo.ThemodificationhasnoeffectonanyTechnicalSpecificationbases,setpointsormargins,norcanitcauseanyadverseaffecttoanysafety-relatedsystems.Therefore,themarginofsafetydefinedinthebasesforanyTechnicalSpecificationsisnotreduced.

TheproposedactioninvolveslocatingnewrelayequipmentinfournewpanelsdesignatedOC190A,OC190B,OC191,&OC192intheTurbineBuildingSwitchgearRoomI-301(04/714')&ll-301(13/714').No.TheprobabilityofoccurrenceofanaccidentortheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetywillnotbeincreasedbytheproposedactiontoimproveseparationandreplaceexistingNon<lass1E230KVtransmissionlineprotectiverelayequipmentwithstateoftheartequipment.Theconsequencesofanaccidentormalfunctionofequipmentimportanttosafetywillnotbeincreasedasaresultoftheproposedaction.Componentfailuremodesforthenewrelayingarethesameasforexistingrelaying.Assuch,thenewrelayingcouldinitiatethesameeventsastoday'srelayingandconsequencesareboundbyFSARChapter15.0'AccidentAnalysis'ndthefailuremodes&effectsanalysisofFSARAppendix15.A'NuclearSafetyOperationalAnafysis(NSOA)'.IINo.Theproposedactiondoesnotcreateapossibility'foranaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheSARbaseduponthereviewofFSARChapter6,FSARChapter15.0,andFSARAppendix15.A*.Thenewfiberopticbasedsolidstaterelayequipmentis'unctionallyequivalenttotheexistingrelayinginprovidingtripsignalstoUnitProtection,thesynchronizingbreaker,andremoteterminalcircuitbreakers.Also,thefailuremodesforthenewrelayequipment;i.e.,unnecessarytripsignalinitiationordelayedtripsignalinitiation,areidenticaltofailuremodesfortheexistingrelayequipment.Basedontheabove,thetransienteventswhichcouldevolvefromfailureofthenewrelayingarethesameastheeventsassociatedwithfailureofexistingrelayingwhichareanalyzedinthefailuremodesand.effectsanalysisofFSARAppendix15.A.III.No.TechnicalSpecificationBases'GeneralDesign.Criteria17ofAppendix"Ato10CFR50'ndRegulatoryGuide1.93'AvailabilityofElectricalPowerSources'rethebasesforensuringthattheminimumrequiredindependentandredundantpowersourcesareavailableforvariousoperatingmodesandforensuringsuitableoutofservicetimesforthepowersourceswhichinclude'offsitesuppliesareestablished.Thesebasesareintendedtoassurethatsufficientpowerisavailableforsafeshutdownoftheplant,mitigation8controlofaccidentconditions,andmaintainingtheplantinshutdownorrefuelingconditions.ImprovedreliabilityandindependenceoftheoffsitepowersuppliesasaresultoftheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasesfortheTechnicalSpecifications.

DC,3-,uiCThischangewillmodifythePOWERPLEXCoreMonitoringSystemSoftware(CMSS)toimplementthenewPFPRpreconditioninglimitprovidedbytheSiemensPowerCorporationforall9X9fuel.No.ThePOWERPLEXCMSSisnotdesignedasasystemimportanttosafetyanddoesnotaffectanysafetyrelatedsystems.ThePOWERPLEXsoftwareisconsideredcriticalsoftwareandthechangesdescribedwillbeperformedincompliancewiththatprocedure.TestingwillbeperformedtoverifythattheroutinesinPOWERPLEXwhichcalculatecorereactivity,corepowerdistribution,coreexposure,andthermallimitsarenotchanges.Therefore,installationofthischangedoesnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.IINoThischangeonlyrequireschangestothePOWERPLEXCMSSresidentontheRDAScomputersystem.ThechangesonlyaffectthePFPRfuelpreconditioningcriteriaestablishedbythefuelvendor,SiemensPowerCorp.Thischangedoesnotchangeanyrouti'neswhichcalculatecorereactivity,corepowerdistribution,coreexposure,orthermallimits.POWERPLEXdoesnotprovideinputtoanysafetyrelatedsystems,anda'saresult,stationresponseisnotmodifiedasaresult.Therefore,thisinstallationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethanalreadyevaluatedintheFSAR.IIINo.This'changedoesnotjeopardizeor'degradethefunctionoroperationofanystationsystemorcomponentgovernedbyTechSpecs.Theproposedmodificationwillnotchangethecalculationorco'rereactivity,corepowerdistributions,coreexposures,orther'mallimits.Therefore,thisdoesnotreducethemarginofsafetyasdefinedinthebasesforanyTechSpecs.

95-185ThismodificationwillremovetheProcessValveStemLeakoffCollectionSystemfromall14of'theUnit1bleedertripvalves(BTVs).ThepurposeofthisactionistopermitreplacementofexistingBTVdoublepackingwithsinglepackingtoensurethatallBTVsmeettherequirementsoftheGeneralElectricFreeSwingCriteria".No.TheremovaloftheStemLeakoffCollectionSystemfromtheBTVsandsubsequentutilizationofasinglepackingarrangementwillservetoenhancetheoverallperformanceandreliabilityoftheBTVsbyeliminatingadditionalfrictionalforcesonthediscarmshaftassembly.TheSARhasbeenevaluated,specificallyFSARSections10.2.2.4,"ExtractionSystemCheckValves",10.2.2.6,OverspeedProtection;10.4.1Q,"ExtractionSteamandFeedwaterHeaterDrainsandVentsSystem';15.0,"AccidentAnalysis';.1.2.2.8.15,"ProcessValveStemLeakoffSystem",'11.3.2.4.32,"TurbineBuilding';5.2.5.2,"LeakDetectionDevicesforNSS-System;5.4.12,"Valves".Basedontheabove,theactionstakeninthismodificationwillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety."IIINo.DeletingthestemleakoffconnectiontotheBTVswillhavenoadverseaffectonany~systemorsystemfunctionsandwillincreasesystemperformanceandimprovetheenvironmentalconditionsoftheareainwhichtheBTVsarelocated.Apotentialcondenserleakwillbeeliminatedwiththeremovalofthestemleakoffisolationvalvesandcappingoftheprocessvalvestemleakoffcollectionheaders.Basedontheabove,theproposedmodificationdoesnotcreateapossibilityforan',accidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.No.RemovingthevalvestemleakofffromtheBTVswillhavenoadverseeffectsonthe,ExtractionSteam,theFeedwaterPumpTurbineandtheTurbineSteamSealsandDrainSystems;tothecontrary,thereliabilityofthesesystemsandtheBTVswillbegreatlyenhancedbythismodification.TheremovaloftheProcessValveStemLeakoffCollectionSystemfromtheseBTVswillhavenoaffectontheoffsiteiodinereleaseratelimitsgiveninSection3/4.11.2,"GaseousEffluents"oftheUnit1TechnicalSpecifications.NoneoftheparametersthatarethebasesfortheTechnicalSpecificationswillbeadverselyimpactedbythismodification;therefore,theactionstakenbythismodificationwill.notreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-186TP-145411,FeedwaterFlowMeasurementsbyChemicalTracer,willdeterminetheaccuracyoftheUnit1feedwaterflowelementsandtheattachedFeedwaterflowinstrumentation(FE-1N001A/B/CBrFT-C32-1N002A/B/C).TheresultsofthetestwillbeusedtoadjusttheflowcoefficientforcomputerpointsNFF52/53/54.No.FSARSection5.2.3.2.2,Table4.44,Table11.1-4and10CFR61werereviewedfortheeffectTP-14M11wouldhaveohStressCorrosionCracking,FuelFailure,CoolantActivity,OffgasActivity,andRadwasteActivity.Basedonthisreviewdiscussion,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.No.TheFSARhasbeenreviewed.Inparticular,Section7.7.1.4.1.2statesthatfeedwatercontrolisapowergenerationsystemandisclassifiedasnotrelatedtosafety.Section7:7.2.4.2statesthatfeedwatercontrolisnotrequiredforsafeshutdownoftheplant,norisitrequiredduringorafteraccidentconditions.TheRFP'swillbeoperatedwithintheboundsofallexistingoperatingproceduresthroughoutthedurationofthisprocedure,thereforewithoneRFPinmanual,accidentsareboundedbyexistinganalyses.PerFSAR15;1.2,FeedwaterControllerFailuretomaximumdemandresultsinfeedwaterpumpsandmainturbinetripanda'reactorscram.PerFSAR15.2.7,lossoffeedwaterflowresultsinlowlevel(L3)reactorscram.IIINo.TheproposedtestwillnotchangeanyTechSpecwaterchemistryparameterexceptforconductivity.TheT.S.basisforrequiringconductivitymeasurementsistobeabletodetectabnormalcondition.FromtheT.S.Bases3/4.4.4Chemistry-"Whentheconductivityiswithinlimits",(51pmho/cm),"thepH,chloridesandotherimpuritiesaffectingconductivitymustalsobewithintheiracceptablelimits.BylimitingtheconductivitytoS0.3pho/cmduringthetestperiod,theabilitytodetectotherimpuritiesandpHabovetheirlimitswillnotbecompromised.TheothereffectofthetestwillbetoincreaseslightlytheactivityofthecoolantduetoproductionofK4z.However,asmentionedinSectionIII,theinsignificantfractionalincreaseintotalactivitywillnotreducethemarginofsafetyasdefinedinthebasesforlimitingspecificactivityofthecoolantto100/EpCI/g.T.S.Bases3/4.4.5SpecificActivitywhentoensurethatthetwohourthyroidandwholebodydosesresultingfromamainsteamlinefailureo'utsidecontainmentduringsteadystateoperationwillnotexceedasmallfractionofdoseguidelinesof10CFR100.Thespecificactivitylimitof100/Eispresently122pCi/gonUnit1whilethespecificactivityofthecoolantisgenerally-0.1pCI/g.BaseduponareviewoftheTechnicalSpecificationsandtheabovediscussions,itisdeterminedthattheperformanceofthisTPdoesnotreducethemarginofsafetyasdefinedintheBasesforanyTechnicalSpecification.C 95-187TheproposedactioninstallsaHydran201RGasMonitoringSystemtodetectandmonitorfaultgasesdissolvedintransformerdielectricoil.INo.AccidentscenariospertainingtotheinterruptionoftheACpowerarediscussedinFSARSection15.2.6-LossofACPower.MaintransformerfailureisnotmentionedinFSARSection15.2.6norisitananalyzedoccurrenceinanyothersectionsoftheFSARsinceitisboundedbytheanalysisfortotallossofoffsitepower.ThemodificationdoesnotincreasetheprobabilityofoccurrenceoftheaccidentdescribedinFSARChapters6and15sincethereisnoadverseimpactonanyplantequipmentasaresult,oftheproposedaction.Thismodificationhasnodirectconnectiontoanysafetyrelatedequipmentandwillhavenoadverseeffectonanystructure,system,orcomponentwhichperformsasafetyfunction.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.IINo.Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.Theproposedchangedoesnotadverselyaffecttheoperationofanypowerdistributionequipmentrequiredforsafeshutdown.Thismodificationcanhavenoeffectontheaccidentsthathaveradiologicalconsequences.Therefore,therewillbenoincreasein'theconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.TheUnit1maintransformersareconnectedtotheutilitypower,asdelineatedinFSARSection8.1.2,anddonotsupplypowerdirectlytotheESFloads.Consequently,theproposedactiondoesnotaffecttheplantelectricalsystemwhichprqvidesnormalandemergencyACpowertoreactorprotectionandsafetyfeaturesequipmentasreferencedinFSARSection8.3.1.3,ClasslEACPowerSystem.TheClass1EpowersystemsuppliesallESFloads,andotherloadsthatareneededforsafeandorderlyshutdown,andforkeepingtheplantinasafeshutdowncondition.Theproposedmodificationwill'otalteroraffectthatdesignbasis.IIINo.TheTech.Spec.BasisforElectricPowerSystems,Section3/4.8requiressufficientpowerbeavailabletosupplysafetyrelatedequipmentrequiredforsafeshutdownandthemitigationandcontrolofaccidentconditions.Also,powerservicestomaintainthefacilityintheshutdownorrefuelingconditionsforextendedperiodsand'ufficientinstrumentationandcontrolcapabilityisavailableformonitoringandmaintainingtheunitstatus.TheACpowersuppliesnecessarytomeettheserequirementsarelistedinSections3/4.8.3.1and3/4.8.3.2anddonotincludenordependupontheUnit1MainTransformers1X101and1X102.Thegasmonitoringinstrumentationisnotrequiredfor,andhasnoaffectupon,operationorshutdownoftheunitorformitigationoftheconsequencesofanaccident.Therefore,themarginofsafetyisnotreduced.

95-188~DCP93-"3088A,BUnit1Installeightadditionalvibrationtransducersineachreactorrecirculationpumptomonitorvibratorybehavior.No.Thismodificationdoesnotincreasetheprobability'ofanaccidentevaluatedintheSAR,includingFSARSections6and15,orin'theDesignAssessmentReport(DAR).Theaddition-ofvibrationtransducersandwiringfromthetransducersprovidesmonitoringcapabilityofthedynamicbehavioroftherotatingelementsofthereactorrecirculationpumps.TheinstallationofthisequipmentoritsfailurewouldnotbeaninitiatingcausefortheeventsanalyzedinFSARSections6and15.IINo.Thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety.FSARSection15.3discussestworeactorrecirculationpumpfailureevents,specifically,pumpseizureandpumpshaftbreakage.Thismodificationenhancesdiagnosticcapabilitiesrelatingtopumpdynamicbehaviorandcanprovideearlyindicationofpotentialpumpproblems,butisnotimportanttosafety.Sincethemodificationenhancespumpmonitoringcapabilitiesadecreaseintheprobabilityofamalfunctionofequipmentisexpected.Thismodificationdoe'snotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheSARsincenon-safetyequipmentisbeingaddedtomonitorpumpvibrationandfailureofthisequipmentwillnotresultinan"accidentofadifferenttypethanpreviouslyevaluated.Themodificationdoesnotcreatethepossibilityofamalfunctionofadifferenttype.Failureoftheproposedequipmentdoesnotinvolveachangeinsystemoperation.oraddadifferentfailuremodewhichwouldaffectthisevaluation.IIINo.RecirculationPumpvibrationinstrumentationisnotdiscussedintheTechnicalSpecification.ReactorRecirculationSystemlimitingconditionsforoperationareaddressedinTechnicalSpecificationSections3.4.1.1.1,3.4.1.3and3.4.1.4.'Thismodificationhasnoaffectonsystemoperation.Theproposedactiontoenhancecapabilitytomonitorreactorrecirculatio'npumpvibration.hasnoimpactontheTechnicalSpecificationanddoesnotaffectthemarginofsafetydefinedinthebasisforanyTechnicalSpecifications.

95-189ThischangeaddsaclamptotheAPRMrodblocksothatthealarmandrodblockwillcomeinattheproposedsetpointof108%thermalpowerduetoPowerUpratedconditions.No.UponreviewofFSARSections7.1,7.7and15.4,itwasconcludedthatthechangesbeingproposedforthismodificationwillnotincreasetheprobabilityofapostulatedaccidentpreviouslyidentifiedandevaluatedintheSARbecausethesafetyrelatedtripfunctionsoftheAPRMarenotchanged.TheexistingAPRMsetpointsremainunchangedfromthatpresentlyidentifiedinTechnicalSpecificationTable2.2.l-l,andSection3.2.2.Therefore,thismodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment.Thismodificationdoesnotalterthesafety-relatedornon-safetyfunctionsoftheAPRMSystemasdescribedinFSAR7.1.2a.l.4.4.1or7;1.2a.1.4.4.3.Themodificationdoesputalimitonthevalueoftherodblockandalarmsetpointbutdoesnotaffectthetripfunction.Therefore,themodificationdoesnotincreasetheconsequencesofanaccidentorintroduceanewsafetyrelatedfunction.No.TheAPRMflowbiasedSCRAMtripsetpointsprovideavariablesetpointsignalbasedontheequation(s0.58W+59)%.Thiscircuitisprovidedwithaclampwhichlimitsthevalueto113.5%.Thisfunctionisnotchanged.AllotherexistingfunctionsoftheAPRMsystemandcircuitsremainthesame.UponreviewoftheFSARSections7.1,7.6,7.7and15.4relativetochangesbeingmadebythismodification,itisconcludedthatthismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.ThemodificationtotheAPRMFlowControlTripReferenceUnitaddsaclamptotheAPRMupscalealarmlrodblock,andlimitsthesetpointvalveto108lobasedontheequation0.58W+50.ThisfunctionisconsistentwiththeproposedUnit2TechnicalSpecificationChangeRequest,specifically,TechnicalSpecificationTable3.3.6-2,ControlRodBlockInstrumentationSetpoints,andSection3/4.2.2subitem3.2.2.Basedontheabovereview,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecifi'cation.

95-190DCSThischangewillmodifyLRWChemicalWasteandChemicalWasteNeutralizerpipingforthepurposeofeliminatingeductorblockagesothatpropermixingofthetankscontentscanbeperformedinordertoachieveaccuraterepresentativetankcontentsamples,toeliminatethematerialbuild-uptoreduceareadoseratesandtomitigateblockage.Kh&ARYINo./ThismodificationdoesnotalterthedesignbasisoroperationasdescribedwithinFSARSection11.2.1,'LiquidWasteManagementSystems".ThemodificationsdetailedinSectionII.Acreatenoadversechangetosystemoperationorfunction;theywill,however,enhancethepipingsystem'sperformance.'heLiquidWasteManagementSystemitselfhasnodirectnuclearsafetyrelatedfunctionasadesignbasis.SafetysystemsdoemptyradioactivewastewaterintotheLWMSaAesigned;however,sincethechangesmadetotheLWMSdonotalterthesystemoperationasdiscussedabove,nosafetyrelatedfunctionofanysystemassociatedwiththeLWMSwillbeaffected,Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.IINoImplementationofthismodificationwillnotchangethenormaloperationoftheLiquidRadwasteManagementSystems,specificallytheLiquidRadwasteChemicalProcessingSubsystem.Thesystemwillcontinuetooperateinaccordancewithitsoriginaldesignbases,'andthepiping'modificationscomplywiththeoriginalconstructioncodes(ANSI831.10)andregulations.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TheTechnicalSpecificationsectionsthatareapplicabletotheLiquidRadwasteProcessingSubsystemare3/4.11.1.1,3/4.11.1.2,and3/4.11.1.3.Thhesemodificationsdonotchangethepipingconfigurationnoradverselyaffectsystemoperationandwillremaininaccordancewiththesystem'soriginal.designbasis,constructioncodes,andregulatoryrequirements.Noneofthesemodificationsaffectstheconcentrationofradioactivematerialsreleasedintheliquidradwasteeffluents(reference3/4.11.1.1),northedosesoftheradioactivematerialin,thoseeffluents(reference3/4.11.1.2),northeoperability/availabilityoftheLRWProcessingSubsystem(reference3/4.11.1.3),,andtherefore,willnotreduce.themarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

DCP9D,llThischangewillmodifyLRWChemicalWasteandChemicalWasteNeutralizerpipingforthepurposeofeliminatingeductorblockagesothatpropermixingofthetankscontentscanbeperformedinordertoachieveaccuraterepresentativetankcontentsamples,to.eliminatethematerialbuild-uptoreduceareadoseratesandtomitigateblockage.INo.'hismodificationdoes.notalterthedesignbasisoroperationasdescribedwithinFSARSection11.2.1,LiquidWasteManagementSystems.ThemodificationsdetailedinSecti'onII.Acreatenoadversechange.tosystemoperationorfunction;theywill,however,enhancethepipingsystem'sperformance.TheLiquidWasteManagementSystemitselfhasnodirectnuclearsafetyrelatedfunctionasadesignbasis.SafetysystemsdoemptyradioactivewastewaterintotheLWMSa&esigned;however,sincethechangesmadetotheLWMSdonotalterthesystemoperationasdiscussedabove,nosafetyrelatedfunctionofanysystemassociatedwiththeLWMSwillbeaffected.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafety,aspreviouslyevaluatedintheFSAR.II.No.ImplementationofthismodificationwillnotchangethenormaloperationoftheLiquidRadwasteManagementSystems,specificallytheLiquidRadwasteChemicalProcessingSubsystem.Thesystemwillcontinuetooperateinaccordancewithitsoriginaldesignbases,andthepipingmodificationscomplywiththeoriginalconstructioncodes(ANSIB31.10)andregulations.Therefore,theproposedactiondoesnotcreateapossibility'foranaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSARIIINoTheTechnicalSpecificationsectionsthatareapplicabletotheLiquidRadwasteProcessingSubsystemare3/4.11.1.1,3/4.11.1.2,and3/4.11.1.3.Thesemodificationsdonotchangethepipingconfigurationnoradverselyaffectsystemoperationand'willremaininaccordancewiththesystem'soriginaldesignbasis,constructioncodes,andregulatoryrequirements.Noneofthesemodificationsaffectstheconcentrationofradioactivematerialsreleasedintheliquidradwasteeffluents(reference3/4.11.1.1),northedosesoftheradioactivematerialinthoseeffluents(reference3/4.11.1.2),northeoperability/availabilityoftheLRWProcessingSubsystem(reference3/4.11.1.3),.andtherefore,willnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-192NL-9+016,Unit2Theproposedactionistoreconfigurethepresentwiringschemefor'nveiteralternatesupplytobypassthefailedcircuitboardnecessaryforvoltageregulationintheComputerUPS.ThiswilleliminatethevoltageregulatingfeatureoftheUPS.Oncebypassedthefailedboard(s)will'beremoved.'6ll6hlhRY:No.Installationofthisbypasstoeliminatethisfeatureexposesthesystem'tovoltagefluctuations.However,itisdeterminedthatforvoltageswingswithintheplant'sdesignedlimitstherewillbenoadverseeffectsonthesystem.Installationofthisbypasswillrestorepresentunavailablebackuppowerfor'theplant'scomputersystemtherebyincreasingtheirreliability.Finally,asmentionedinFSAR8.3.1.8and7.5.c,theaffectedsystemswhileessentialarenotsafetyrelated.ThischangedoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentrelatedtosafetyaspreviouslyevaluatedintheSAR..NoThismodificationwillrestorethealternatesupplyoftheComputerUPS(2D656)therebyimprovingitsreliability.FSAR7.5(c)explainsthatthosefeaturesprovidedbytheDCSnecessarytosafetyareprovidedwithhardwiredbackup.Inaddition,thesesystems(PMSandDCS)arenotClass1E.Theunregulatedalternatesupplypertheplant'sACsystemdesignwillstillbeadequate*tomaintainthepresentUPSloads.InstallationofthisbypassdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypreviouslyintheSAR.IIINo.TheComputerUPS(2D656)isnotmentionedintheTechnicalSpecification.SimilarlyDCSandPMSarenotmentioneddirectly,however,theNSScomputerprovidesdatatoRDASwhichisusedtocalculatethecorethermallim'itsevery24hours.Lossof2D656willaffecttheNSScomputertherebypieventingcalculationofthecorethermallimitsperT.S.3.2.1,3.2.3,3.2.4andinitiatinga24hourLCO.ThebypassinstallationwillimprovethereliabilityoftheNSScomputer'ymakingavailablethebackupalternatesupplyfor'2D656.Therefore,thischangedoesnotreducethemarginofsafetyasdefinedinthebasisfortheTechnicalSpecification.

95-193CTopreventaturbinetrip,thewaterlevelintheMSdraintanksshallbelowered10inchestoaccommodatethehigherleveltransientassociatedwithPowerUprate.Also,acheckvalvewillbeinstalledintheMSdraintankdrainlineofeachlooptolimitflashingduringrapidreductionofunitpower.No.ThemodificationdoesnotincreasetheprobabilityofoccurrenceofanyaccidentevaluatedintheSAR,includingFSARSections6and15.ThehardwarerelocationsportionofthemodificationwillprovidethesamefunctionsandmeetthesamedesignbasisfortheMSdraintanklevelinstrumentation.Potentialfailuremodesoftherelocatedleveltransmittershavenotchanged.Thismodification'doesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipment,aspreviously'valuatedintheSAR.Themodificationisrelocatingandrecalibrating'xistingequipment,addinganewcheckvalve,andreroutingcondenserAreaCoolingSystemductingasrequired,whileretainingthedesignbasesoftheoriginalsy'tem.Themodificationdoesnotincreasetheconsequencesofanaccidentsince.themodificationdoesnotaffectanysafetyfunctions.Thismodificationdoesnot-increasetheconsequencesofamalfunctionofequipment.Themodificationdoesnotaffectanysafetyrelatedequipment.TheonlyequipmentmalfunctionthattheMSdraintanklevelcontrolsystemcould'nitiateandthecheckvalvecouldcausewouldbelossoflevelcontrolofthe'draintank.Theconsequenceofalevelcontrolsystemfailurehighisaturbinetrip.TheconsequenceofalevelcontrolsystemfailurelowissteamentryintotheFWheaters.Neitherfailurewouldresultinaradiationreleaseandthereforetherewillbenochangetotheoffsitedosetothepublic.IINo.Potentialfailuremodesoftherelocatedandrecalibratedequipmentarethesameasthoseattheexistinglocation.Failureoftherelocatedandrecalibratedequipmentwouldhavethesameeffectonthesystemasfailureoftheequipmentinitscurrentlocation.LoweringtheMSdraintanklevelapproximately10incheshasnoadverseeffectontheoperationofthefeedwaterheatersandincreasesscramavoidancemargin.IIINo.TheTechnicalSpecificationsdonotgovernoperationoftheMSdraintanklevelinstruments.Therefore,thisproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-194TheactioninvolvesissuingasetpointchangepackagethatchangestheMotorOperatedValve(MOV)allowabletorqueswitchsettingrangeaslistedontheMotorOperatedValveDataDetailDrawing.No.Theproposedactiondoesnotincreaseth'eprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety.Theonlyequipmentaffectedbythisactionisthemotoroperatedvalveassemblyitself.Thevalve'sfunctionwithinthesystemdoesnotchange.Valvestroketimeremainsunaffected.Therefore,thevalvestringy~timestillconformstothestroketimerequirements(asapplicableaslistedin6t(RTable6.2.12).IINo.TheactiondoesnotadverselyaffecttheabilityoftheMOVtoperformitsdesignintendedfunction,doesriotaffectthevalvestroketime,doesnot:adverselyaffect.theMOVdynamicqualification,anddoesnotaffectanyotherequipment./Basedupontheabove,itisconcludedthattheproposedactiondoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.Theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisfor~anyTechnicalSpecification.TheproposedactiondoesnotaffectMOVstroketime.Theproposedactionhasnoaffectonsystemoperation'andthevalvedesignbasisfunctionismaintained.NDAP-QA<23,"StationPumpValveTestingTestProgram,"andNDAP-QA-412,"l.eak.RateTestProgram,"referencedinthesetpointchangepackageassureconformancetoTechnicalSpecificationleakagerequirements.

95-195CHPCIValveHV-155F003actuatorwillbemodifiedbyreplacingthe80ft-lbmotorwitha60ft-lbmotor.No.ThemodificationhasnoimpactonthedynamicqualificationoftheMOVasdiscussedinSection3.9.3.2b.2oftheFSARsincetheactualaccelerationsatthevalveduringadynamiceventarelessthantheallowableaccelerations.ThemodificationswillmaintaintheMOVdesignstroketimewithintheFSARandTechnicalSpecificationlimitof50seconds.Thevalveleakagecriterionisnotchangedbythismodification.LLRTrequirementsofFSARSection6.2:6.3andTable6.2-22willbemaintained.'IChangingHV-155F003motoractuatorwillprovidesufficientthrusttoensurethevalvefunctionsduringalldesignconditions.Thevalve'spressureretainingcapabilityismaintained,theleakagecharacteristicsareunaffected,andthestroketimeremainswithinthedesignbasis.TheanalysisdescribedinFSARSection6.2.4and6.2.4.3.2.7andFSARTable6.2-12arestillvalid.No.Themodificationdoesnotalterthe'motorcontrolcenterenvironmentalor.seismicqualifications,doesnotdecreasetheavailablevoltageatthemotorterminalsbelowtherequiredlevel,doesnotaffectthemotorpowersupplysystem,anddoesnotaffectanyotherequipmentintheHPCIorinterfacingsystems.'asedontheaboveandpreviousanalyses,itisconcludedthattheproposedmodificationdoesnotcreatethepossibilityforanaccident'ormalfunctionofadifferenttypethanpreviouslyevaluatedintheSAR,IIINo.ThemodificationdoesnotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications.TechSpecbases3/4.5.1,3/4.6.1.1,3/4.6.1.2and3/4.6.3and3/4.8.2werereviewedforthisevaluation(EmergencyCoreCoolingSystems,PrimaryContainmentIntegrity,PrimaryContainmentLeakage,and,PrimaryContainmentIsolationValves,ElectricalPower.Systems,DCSources).

95-196Themodificationworkincludesreplacingportionsoftheexisting'fir'st,second,thirdandfourthextractionsteampipingbetweenthemainturbineandclosedfeedwaterheaters.KhlhL48E:No.FSARSection15.1.1evaluatesadecreaseincorecoolanttemperaturecausedbylossoffeedwaterheating.TheuseofCORRONIXpipingwillnotincreasetheprobabilityofanaccidentormalfunctionofequipment.DecreaseinreactorcoolantinventoryisevaluatedinFSARSection15.6.4TheconsequencesofanaccidentormalfunctionofequipmentasdiscussedinFSARSection15.6.4or15.6.6havenotincreasedasaresultoftheuseofCORRONIXfortheextractionsteampiping.Therefore,theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetywillnotincreasewiththeimplementationoftheplannedmodifications..IINo.Thefirst,second,third,andfourthextractionpipingsystemsdonotperformasafetyrelatedfunctionnordotheyinterfacewithsafetyequipmentorsystems.Theproposedactionsensurepipingintegrityandenhanceplantreliability.,Therefore,theplannedextractionpipingmodificationsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.ThereisnoTechnicalSpecificationsectionapplicabletotheExtractionSteampiping.'ipingreplacementswillnotimpactsystemoperations,ThechangeinpipematerialhasnoimpactonthechemistryrequirementsforsystemsdiscussedintheTechnicalSpecifications.Themoreerosion/corrosionresistantpipingmaterialinstalledwillprovideareduction.'inwearratesresultinginlowermetalcontributionsinthefeedwatersystem.Therefore,theplannedmodificationswillnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-197ThismodificationwillinstallanRodSequenceControlSystem(RSCS)keylockbypassswitchontheUnitOperatingBenchboardl(2)C651.ThebypassswitchwillreplacetheneedtoinstalljumpersperEmergencySupportProcedureES-156(256)401,BypassingRSCSRodBlock"toinhibitRSCSrodblockforrodinsertiononly.No.FSARChapters7and15werereviewed.TheproposedactiondoesnotincreasetheprobabilityofoccurrenceofanaccidentregardlessoftheoperatingconditionsincludingtheATWSevent.Compliancewithalltheapplicabledesignandinstallationconsiderationsalongwithdetailingthepurposeandintendeduseofthebypassswitchintheapplicableemergencyresponseproceduresassuresthattheproposedactiondoi;snotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety,as.previouslyevaluatedintheSAR.ThismodificationdoesnotincreasetheconsequencesofanaccidentpreviouslyevaluatedintheSAR.'headditionofthebypassswitchandindicationlightstotheRSCSlogicdoesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.AreviewofFSARSections7and15didnotidentifyanypostulatedinitiatingeventrelativetotheproposedactionwhichwouldcreatethepossibilityforanaccidentofadifferenttype.MisoperationoftheRSCSBypassswitchorfailureoftheRSCSwillnotcauseanaccidentofadifferenttype.TheRWMprovidesabackuptotheRSCSincaseoffailureofmisoperationtomaintainrodblockmonitoring.Plus,accordingtoTechnicalSpecificationSection3.1.4.1,iftheRWMisoutof-serviceasecondoperatorwillbepresenttomonitorrodmovementwhichensuresabackuptoRSCS.Theproposedaction,bypassingtherodblockfunctionofRSCS,isonlyexecutedafteranATWSeventhasoccurred.Therefore,theseactionsareonlyexecutedwhentheplantisinaconfigurationwhichisbeyondthedesignbasis.IllNo.TheinstallationoftheRSCSbypassswitchdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.OperationoftheRWCSBypassswitchwillbepermittedthroughentryintoEmergencyOperatingProcedureEO-100(200)-113.EmergencyOperatingProcedureEO-100(200)-113specifiesoperatoractionsthatshouldbecarriedoutw'iththeplantinaconfigurationwhichisbeyondtheplantdesignbasis.

95-198EightScramDischargeVolume(SDV)ventlinepipesupportsrequirestructuralmodifications.ThesesupportswhichexceedtheirdesignlimitsbasedonthenewwaterhammerloadsaretobemodifiedtoincreasetheirdesigncapacitiestoinsurethatallSDVpipingandpipesupportsaremaintainedwithintheirapplicableCodedesignlimits.No,Theapplicabledesign.basisaccidentsintheSARwhichaddresstheScramDischargeVolume(SDV)pipingoftheControlRodDrive(CRD)systemaffectedbythismodificationaredescribedinFSARSections:1)15.4,"ReactivityandPowerDistributionAnomalies,and2)15A.6.5.3,EventDefinitionandOperationalSafetyEvaluations.ThespecificevaluationsaredescribedinFSARSections:1)4.6.2,EvaluationsoftheCRDS,2)15.4.9,"ControlRodDropAccident(CRDA)".ProposedmodificationsneitheralterCRDsystemfunctionnorperformance.Theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunction'oftheequipmentimportanttosafetyaspreviouslyevaluatedintheSARwillnotincreasewiththeimplementationoftheplannedmodifications.IlNo.PlannedmodificationsdonotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.BreachingoftheScramDischargeVolumeventpipingisnotrequired.Allworkasplannedisexternaltothepipingsystemandwillresultinincreasingsupportingcapacitiesofthepreviouslyinstalledcomponents.TheproposedactionsensurepipingandpipesupportstructuralintegrityandenhanceUnit1reliability.lllNo.TechnicalSpecification3/4.1.3,ReactivityControlSystem-ControlRodOperability,isapplicabletotheScramDischargeVolumeventanddrainpiping.Plannedmodificationsrestoreapplicablesafetydesignmarginsbyincreasingpipesupporthardwarecapacities.inaccordancewithCodedesignrequirements.TheplannedmodificationswillnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-199ThischangewillraisethesetpointofTSH-11206A/BtothenewResidual'HeatRemovalServiceWater(RHRSW)designtemperatureof97'F.No.FSARSections1.2,2.4,7.3,9.2,and15.2werereviewed.TheoperatoractionsassociatedwiththealarmresponseprocedureAR-1'09401willnotchangeasaresultofthisSCP.TheoperatoractionsfromAR-109%01willbeperformedat97degreesFinsteadof95degreesF.Thisisacceptablesincetheaffectedequipmenthasbeenevaluatedattherevised97degreeFdesigntemperature.Therefore,sincetherearenochangesinoperatorresponsetothisalarm,theproposedSCPwillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipment,aspreviouslyevaluationintheFSAR.Theinstrumentloopsarenon-safetyandprovideanalarminthe.controlroomifRHRSWinlettemperaturesreachthedesignlimit.TheprocesssetpointofTSH11206A/Bareraisedtobeconsistentwiththereviseddesigntemperaturelimits.Theswitchesandtemperatureelementswilloperatewithintheirnormaloperatingranges.IINo.,Thissetpointchangedoesnotinvolveanyhardwareorsystemfunctionchanges.TheTSH-11206A/BswitchprovidesanalarmwhentheRHRSWdesigntemperaturehasbeenreached.ThissetpointchangewillallowthesubjectalarmtoretainitsfunctionatthenewRHRSWdesigntemperature.Therearenoautomaticactionsassociatedwiththisalarmresponseprocedureandnooperatoractionsrequiredthatcouldinitiateanyoperationaltransients.Therefore,thissetpointchangedoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.TechnicalspecificationsrelatedtoRHRSWsystemincludetechnicalspecifications,3/47.1.1and7.1.3.Theproposedsetpointchangefrom95to97'Fisrequiredtobeconsistentwiththepresentfunctionofthisinstrumentandwillthusmaintainthemarginofsafetyasdefinedinthebasisoftheabovereferencedtechnicalspecifications.Sincethemarginofsafetyismaintained,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforany.technicalspecification.

95-200dTheproposedactionistoreviseoff-normalProceduresON-135(235}401LossofFuelPoolCooling/CoolantInventorytopreparetheplantforincreasingtemperaturesandhumidifiesresultingfromalossoffuelpoolcoolingby:A)SecuringtheReactorBuildingRecirculationFansduringSecondaryContainmentIsolationsinvolvingZonesIand/orIIand8)OpeningtheductdrainsontheconnectingductworktoSGTS.INo.AreviewofFSARChapters6and9indicatethattheproposedactionwillnotincreasetheprobabilityofanaccidentormalfunctionofequipmentimportanttosafety.Analysishasshownthat'allequipmenttoplantsafetywillnotbeimpactedbytheproposedaction.IINo.AreviewofFSARChapters6and9indicatetheproposedactionwillnotcreateanaccidentormalfunctionofadifferent'type.Theproposedactiondoesnotaffectthereactorpressurecoolantboundary,thusnoaccidentofadifferenttypecanoccur.TheproposedactionensuresallECCSaridsafetyrelatedsystemsperformtheirdesignfunctions.IIINo.TechnicalSpecification3I4.6.5requiresthatsecondarycontainmentintegrityshallbemaintained.Aspreviouslydiscussed,withtherecirculationfansoffanddrainsontheductworkconnectingtoSGTSopen,SecondaryContainmentintegritycanbemaintained.Thus,noreductioninthemarginofsafetywilloccurduetotheproposedaction.

95-201TheproposedrevisiontoEO-100/200-104,SecondaryContainmentControl,changescriteriaforisolatingsecondarycontainmentHVACfromSecondaryContainmentarearadiationlevelexceedstheMaximumNormalOperatingRadiationLevelto'ReactorBuildingSPINGreleaserateexceedstheMaximumNormalLevel'.ThischangereducesthelikelihoodofhavingtoisolatereactorbuildingHVACwhentheradioactivityreleaseratefromSecondaryContainmentisstillwithintheallowablelimit.INo.TheactionsspecifiedinEO-100/200-104useexistingplantequipmentasitwasintendedtobeusedandareconsistent'withtheassumptionsfortheuseofthatequipmentasdescribedintheFSAR.Thespecifiedactionsareintendedto,andarecapableofpreservingtheSecondaryContainmentfunctionwhichisrelieduponintheFSARSafetyAnalyses.TheactionscomplywithSSESTechSpecrequirementsasdescribedabove,andfinally,thespecifiedactionsaremitigativeinnature,takeninresponsetoabnormalSecondaryContainmentparameterswhichcouldonlybeexpectedtobeexperiencedasaresultofaseverelydegradedplantcondition.Therefore,theactionsspecifiedinEO-100/200-104donotincreasetheprobability'ofoccurrenceortheconsequenceofanaccidentormalfunctionofequipmentaspreviouslyevaluatedintheFSAR.No.TheproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethanhasalreadybeenevaluatedintheFSAR.Asmentionedabove,theactionsspecifiedintheEO-100/200-104aremitigativeinnatureandarecapableofpreservingtheSecondaryContainmentfunction.ThemanualcontrolofADSwillintroduceaplanttransientwhichislessseverethanthelargebreakLOCAanalyzedinSection15.7oftheFSAR.(seeFSARTable3.9-15).TheactionsspecifiedtoperformamanualreactorshutdownorscramalsointroducetransientswhicharewithintheboundsofFSARChapter15analyses.TheactionsspecifyingtheuseofHVACandsumppumpsystems,andtheverificationoftheproperoperationoftheseHVACands'umppumpsystems,operatethesesystemsastheywereintendedto,beused,andcannotinitiateanaccidentofadifferenttypethanhasalreadybeenanalyzedintheFSAR.IIINo.TheactionsspecifiedintheproposedversionofEO-100/200-104allowcompliancewithexistingSSESTechnicalSpecificationsinthattheactionstatementsassociatedwithTheSpec-3/4.3.2(IsolationInstrumentation)and3/4.11.2(RadioactivityRelease)arecompliedwith.Inaddition,asmentionedabove,thespecifiedactionsuseplantequipmentasitwasintendedtobeusedandasFSARanalyseshaveassumed.ThetransientsintroducedbytheproposeduseofplantequipmenttoinitiateareactorscramorRPVdepressurizationareboundedbyexistingFSARChapter15AccidentAnalysisforLOCAandscram-producingevents.Therefore,becausetheimplementationofEO-100/200-104involvesactionswhichuseplantequipmentasitwasintendedtobeused,andinamannerwhichisconsistentwiththeFSARAssumptionsandbecausetheactionsspecifiedareconsistentwiththeactionsspecifiedintheSSESTechnicalSpecifications,theproposedactiondoesnotreducethemarginofsafetyinthebasisofanyplantTechnicalSpecification.

95-202Thismodificationprovidesanalternativemethodofpowerlineconditio'ning.AConditioningPowerModuleratedfor75KVAequivalenttotheexistingalternatesourceComputerUPSregulatingcapacitywillbeinstalled.5UhihSIE;INo.Theaffectedsystems,asmentionedinFSARSections'7.5Cand8.31.8,whileessential,arenotsafetyrelated.Noadversesystemlogicchangesoccur.TheproposedactionwillhavenofunctionalimpactonthedesignbasisoperationoftheComputerUPS.NoadverseimpacttotheClass1Eelectricalsupplysystemoccurs.Moreover,thismodificationincreasesthereliabilityoftheComputerUPSalternatepowersupplyandwillhavenoeffectonanystructure,systemorcomponentwhichperformsasafetyfunction.Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedaccidentsinvolvingoffsitedose.Thep'roposedchangesdoesnotadverselyeffecttheoperationofthePlantComputerSystemasmentionedinFSARSection7.5C.Thismodificationcanhavenoeffectontheaccidentsthathaveradiologicalconsequences.No.ThismodificationwillrestorethealternatesupplyoftheComputerUPS(2D656),asmentionedinFSARSection8.3.1.8toitsoriginaldesignbasisconfiguration,therebyimprovingitsreliability.Thenewequipmentpertheexistingplant'sACsystemdesignwillstillbeadequatetomaintainthepresentUPSloads.Inaddition,thesesystemloads(PMSandDCS)arenot-anddonotinfluenceany-Class1Esystems.Therefore,theproposedaction'doesnotcreateapossibility'foranaccidentormalfunctionofadifferenttypethananypreviouslyintheSAR.III-No.TheComputerUPS(2D656)isnotaddressedintheTechnicalSpecifications.'However,lossof2D656couldaffecttheNSScomputertherebypreventingcalculationofthecorethermallimits.ResultingbackupcomputercalculationswouldbedonetomaintainTechnicalSpecification3.2.1,3.2.3,and3,2.4requirementsandpreventa24-hourLCO.TheproposedactionwillimprovethereliabilityoftheNSScomputerbyprovidingareliablealternatepowersupplyfor2D656.TherelocationofTSH-22260CwillnotimpacttheCO<SystemasdelineatedinTechnicalSpecification3.7.6.3becausenofunctionalchangeoccursanditisnotaTechnicalSpecificationdevice.Noadditionalsurveillancerequirementsareneeded.Basedontheabove,theproposedchangedoesnotreducethemarginofsafetyasdefinedinthebasisfortherespectiveTechnicalSpecifications.

95-203InstallpermanentventilationsealsatthereactorheadpipingpenetrationsintheUnit1refuelingsealplate.ThismodificationwillprovideaninterimbarrieruntilthedomecoversareinstalledbetweenZonesIandIIIduringarefuelingoutage.No.TheadditionofpermanentventilationsealsatthereactorheadpipingpenetrationsintherefuelingsealplatewillreducetheprobabilityofcrosstyingZones1andIIIduringarefuelingoutagebased.onthepresentconfigurationandtheuseoftemporaryseals.Inaddition,theproposedactionwillnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapters6and15oftheFSAR,theDesignAssessmentReportorNUREG%776.IINo.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSARISection5.2.5(5.2.5.1.2.4.1)oftheFSAR,Chapters6and15oftheFSAR,theDesignAssessmentReportandNUREGZ776werereviewedtodetermineiftheproposedactionhadthepotentialforcreatingapostulatedinitiatingeventwhichwasnotwithinthespectrumofeventsanticipated.ThereviewdidnotidentifyanypostulatedinitiatingeventwhichwouldcreatethepossibilityforanaccidentormalfunctionofadifferenttypetharipreviouslyevaluatedintheSAR.IIINo.Therequirementsfortheintegrity.oftheSecondaryContainmentareaddressedbyTechnicalSpecification3/4.6.5.Section4.5.1.c.3providesthelimitsfor.leakagefromZoneIandZoneIIIduringtherefuelingoutage.Oncethedrywellairlockinterlocksareremoved,thedrywellbecomespartofZoneI.Byaddingthepermanentventilationsealstotherefuelingsealplate,nodetectableadditionalleakageatthereactorheadpipingpenetrationswilloccurduringthereactorheadpipingremovalanddomecoverinstallation.Therefore,theactionstakenbymodificationwillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

ThischangeraisestheprocesssetpointoftheRCICturbineelectronicoverspeedsystemto5093rpmtoaccountforpoweruprateconditions.Theoverspeedmarginwillremainat10percentaboveratedturbinerotorspeed.No.ReviewedFSARSections15.2.7.2.3,15.2.9.3.2,15.2.tI.3.2.1,15.2.9.3.2.2,15.2.9.3.2.3,7.1.2a.1.18,andTables7.1-2,7.1-3,and7;1-9.PerGESIL382,theelectronicoverspeeddeviceisnotrequiredandonly'providesabackupfunction'othemechanicaloverspeedtripdevice.Theelectronicoverspeedtripdevicedoesnotprovideasafetyfunction,andthereliabilityofthisdeviceisnotaffectedbythenewlyproposedsetpoints.ThissetpointdoesnotexceedthetripsetpointwhichwaspreviouslyrecommendedinGESIL382.CiverspeedtripmalfunctionwasnotevaluatedintheFSAR.DesignanalysisbyGEconfirmsthattheRCIC.pumpwilloperateatthehigherloadsrequiredbypoweruprate.Changingtheelectronicoverspeedtripsetpointdoesnotmakefailuremorelikelyoraffecttheconsequencesinanymanner.Therefore,'theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSARIIINo.Thisprocesschange'doesnotinvolveanyhardwarechangesorchangestosystemfunctions.The'uprateprocesssetpointcompensatesforincreasedRCICturbinespeedrequiredtogeneratetheincreaseinpumpheadattheupratepowerlevel.Thefunctionandoperabilityoftheequipmentisnotalteredbythesetpointchange.ThetripsetpointiswithintherecommendedsettingofGESIL382.Thissetpointchangedoesnot,createthepossibilityofanaccidentofadifferenttypethananyevaluatedpreviouslyintheSAR.~IIINo.Areviewofthetechnicalspecifications(specificallySection3/4.3.5)confirmedthattheRCICelectronicoverspeedtripfortheRCICturbine.isnotreferenced.Therefore,thissetpointchangedoesnotreducethemarginofsafetyasdefinedinthebasisforanytechnicalspecification.

95-205Thismodificationwillinstallthreenew4manualgatevalvestothe4GBD-115condensate/feedwaterpiping.No.Thismodificationdoesnotadverselyaffecttheoperationorfunctionofthe4"GBD-115condensate/feedwaterpipingandthemodificationwillmeetallthedesignrequirementsasspecifiedintheSAR.Theproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,there.willbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.IINo.ThismodificationwillmeetallthedesigncriteriaasspecifiedintheSAR.Thefunctionandperformanceofthe4"GBD-115condensate/feedwaterdrainpipingwillbeenhancedbytheadditionofthesemanualgatevalvesduetothedoubleisolationfunctiontheyprovideinconjunctionwithexistingglobevalve106092,106093,and106132.Thenewmanuallyoperatedgatevalveswillbelocatedadjacenttotheexistingmanuallyoperatedglobevalves.Bothvalves(ineachline)willbenormallyclosedandbothvalveswouldrequireopeningtodrainthesystem.Basedontheabove,theproposedactionsdonotcreateapossibility'foranaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.illNo.Tliepipingandcomponentsaffectedbytheactionstakeninthismodificationarenot.specificallyaddressedinthebasisforanyUnit1TechnicalSpecification.Thismodificationonlyprovidesenhancementtotheisolationcapabilitiesfor(3)normallycloseddrainlines.BasedonthisandthefactthatthemodificationmeetsallapplicabledesigncriteriaasspecifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-206ReplaceexistingAppletonBaymaster1000wattincandescenthighbayluminaries(61perunit),locatedonthe818'levationoftheRefuelFloorintheReactorBuilding,withAppletonBaymaster400watthighpressuresodium(HPS)luminarieswithintegralballastandreplacestheremaining,existingAppletonBaymaster1000wattincandescenthighbayluminariesontheRefuelingFloor(5perunit).No.FSARSections8.3.1,ACPowerSystems,and15,AccidentAnalyses",werereviewedforpreviouslyevaluated'accidents.Noaccidentswereinitiated,norrequiretheLightingandMiscellaneousDistributionSystemforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.The.LightingandMiscellaneousDistributionSystemisnotSafetyrelatedor'requiredforsafeshutdownofthereactor,ormitigation'ofadesignbasisaccident.NoaccidentsevaluatedintheSARinvolvetheLighting,MiscellaneousDistributionSystemorrequireitsoperability.Therefore,thesemodificationswillnotincreaseprobabilityof.occurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheSAR.No.Theelectricalpowerlightingcircuits,whichremainunaltered,areinstalledasanon<lass1Esystemandadheretotheelectricalseparationcriteria(FSARSection3.12.3.4).Basedupontheabove,itisconcluded.thattheproposedmodificationsdonotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheSAR.IIINo.ThemodificationsdonotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecifications,since1)theTechnicalSpecificationsdonotaddressthenon-SafetyRelatedLightingandMiscellaneousDistributionSystem2).therearenoimpactstoanyotherTechnicalSpecificationsystems.

95-207C~,UiCModificationof13AppendixRfiredamperswithspringsorlargerspringstoassumethedamperswillfullycloseinresponsetoaRuskin10CFR21report.No.FSARSection9.4,9.5,and15.0werereviewedtodeterminewhichaccidentsinvolvedtheControlRoomFloorCoolingandtheComputerRoomFloorCoolingsystems,ControlStructureHVACsystemsandtheFireProtectionSystem.Itwasdeterminedthatthesesystemsorthecomponentswithinthesystemsdonotcauseorinitiateanyoftheaccidentsoreventsdescribed.AreviewofFSARSections15.6'nd15.?andthecorrespondingsectionintheSER,revealedthatfiredampersandaccessdoorsintheControlStructureductworkingeneralarenotreliedupontomitigateanyplantaccidentsanalyzedintheSAR.Thefiredampersareimportanttosafety.Replacementofspringsdoesnotreducethecapabilityofthefiredamperstoperformtheirsafetyfunctionsduring.allsafeshutdownevents.Theadditionofaccessdoorsnotreducethecapabilityoftheaffectedductsectionstoperformtheirsafetyfunction(i,e.,remainintact)duringallsafeshutdownevents.IINo.Theproposed'actiondoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethanevaluatedintheFSAR.TheaccidentsofFSARSection9.4werereviewed.Nonewoperatingmodesarecreatedforanysystem.Theuseofthesamestandardasthe.existingspringsfor.design,material,andqualificationensuresthefunctionandintegrityofthefire.damperstoperformasfirebarrierswithafireresistanceratingequivalenttotheoriginals.Theuseofthestandarddetailsfordesignandmaterialsfortheaccessdoorsensuresthefunctionandintegrityoftheaffectedductsections.Thereforethepossibilityofadifferenttypeofaccidentisnotcreated.IIINo.ITechnicalSpecifications3/4,3.7,3/4.3.7.9,3/4.7.2,and3/4.7.7werereviewed.Also,theTechnicalSpecificationbaseswerereviewedformarginsofsafetyapplicabletotheequipmentaffectedbythemodification.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-208ThismodificationinstallsautomatichighlevelalarmsintheBatchLubeOilTankinconjunctionwiththeexistingLT-11901instrumentloop.No.ThemodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesoftheaccidentsdescribedinFSARChapters6and15sincethereisnoadverseimpactonanyplantequipmentasaresultoftheproposedaction.'heproposedactionwillhavenofunctionalimpactonthedesignbasisoperationofthe1T119oillevelinstrumentloop.Noadverseimpacttoanypowerdistributionequipmentoccurs.Moreover,thismodificationincreasesthereliabilityduringoiltransfersandwillhavenoeffectonanystructure,system,orcomponentwhichperformsasafetyfunction.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedinvolvingoffsitedose.Theproposedchangedoes.robotadverselyaffectthefunctionoftheLubeOilTransferandPurificationSystemnorcanitdegradetheoperationoftheClass1EACPowerSystemasreferencedinFSARSection8.3.1.3.Thismodificationcanhavenoeffectontheaccidentsthathaveradiologicalorenvironmentalconsequences.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR..No.Theinstallationof1T119highlevelalarmscannotcauseanenvironmentaleventsincenodirectconnectiontoanyoiltransferequipmentorlogicoccurs.Moreover,then'winstallationprovidesameansofprotectingtheenvironmentbyalertingoperatorstooverfillconditionstherebyreducingtheriskofanenvironmentalaccident.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypervasivelyintheSAR.IIINo.TheLubeOilTransferandPurificationSystem,isnotaddressedintheTechnicalSpecifications.Theproposedactionprovideslevelinstrumentationthatisnotrequiredfor,andhasnoaffectuponoperationorshutdownoftheunitorformitigationoftheconsequencesofanaccident.'IBasedontheabove,themarginofsafetyforanyTechnicalSpecificationisnotreduced.

95-209ThismodificationinstallsautomatichighlevelalarmsintheBatchLubeOilTankinconjunctionwiththeexistingLT-11901instrumentloop.No.ThemodificationdoesnotincreasetheprobabilityofoccurrenceortheconsequencesoftheaccidentsdescribedinFSARChapters6and15sihcethereisnoadverseimpactonanyplantequipmentasaresultoftheproposedaction.Theproposedactionwillhave.nofunctional~impactonthedesignbasisoperationofthe1T119oillevelinstrumentloop.Noadverseimpacttoanypowerdistributionequipmentoccurs.Moreover,thismodificationincreasesthereliabilityduringoiltransfersandwillhavenoeffectonanystructure,system,orcomponentwhichperformsasafetyfunction.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.Theproposedactiondoesnotinvolveaprecursoroforacontributortoanyevaluatedinvolvingoffsitedose.TheproposedchangedoesnotadverselyaffectthefunctionoftheLubeOilTransferandPurificationSystemnorcanitdegradetheoperationoftheClass1EACPowerSystemasreferencedinFSARSection8.3.1.3.Thismodificationcanhavenoeffectontheaccidentsthathaveradiologicalorenvironmentalconsequences.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR..No.Theinstallationof1T119highlevelalarmscannotcauseanenvironmentaleventsincenodirectconnectiontoanyoiltransferequipmentorlogicoccurs.Moreover,thenewinstallationprovidesameansofprotectingtheenvironmentbyalertingoperatorstooverfillconditionstherebyreducingtheriskofanenvironmentalaccident.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananypervasivelyintheSAR.IIINo.TheLubeOilTransferandPurificationSystem,isnotaddressedintheTechnicalSpecifications.theproposedactionprovideslevelinstrumentationthatisnotrequiredfor,andhasnoaffectuponoperationorshutdownoftheunitorformitigationoftheconsequencesofanaccident.Basedontheabove,themarginofsafetyforanyTechnicalSpecificationisnotreduced.

95-210TheproposedactionisarevisionofOP-ORF%07,UnderwaterFuelInspectionandRepair.Kh51hRY:No.FuelhandingandfuelpoolcriticalitywerereviewedagainsttheFuelHandlingAccidentgiveninPL-NF-94-002,SusquehannaSESUnit2Cycle7ReloadSummaryReport",April1.994.Theproposedrepairofthebundlecontainingafailedtieroddoesnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,whilethebundleisbeinginspected,repaired,andstoredinthefuelpool.IIINo.Theproposedremovalandinspectionofafailedtierodandrepairofthefuelbundlewithamodifiedtieroddoesnotcreateanyhazardsotherthanthosepreviouslyevaluated.Therefore,theproposedproceduredoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheSAR.No.,FuelinspectionsandrepairarenotprecludedbyordescribedintheTechnicalSpecifications.Theproposedinspectionswillnotreduceanymarginofsafetybecause(1)theequipmentisdesignedtoperformfuelinspections,(2}aminimumofsevenfeetofwatershieldingwillbemaintainedaboveirradiatedequipment,(3)theradiologicalconsequencesoffueldamagethatcouldoccurduringtheremoval,inspection,andrepairarelessthanthosepreviouslyevaluatedintheSAR,(4)thereplacementofanenrichedrodwithanaturalrodwillnotcause.therepairedbundletoexceedtheenrichmentcriterionforfuelpoolcriticality,and(5)allfuelhandlingoperationswillbeperformed'inaccordancewithapprovedproceduresformovingirradiatedfuel~Therefore,themarginofsafetyasdefinedinthebasisofthe.TechnicalSpecificationwillnotbereduced.95-211scTheproposedchangetoNDAP+A-1104,"ARMSetpointChanges,willallownon-TechnicalSpecificationAreaRadiationMonitors(ARM')tohavetheirhighradiation(upscale)setpointslistedas"fieldsetintheappropriatedatabase.ThiswillallowtheupscalesetpointstobechangedundertherequirementsofHP-TP-441.No.TheAreaRadiationMonitoringSystemperformsnosafetyorope'rationalfunctionotherthanalarmandindicationanddirectlyinterfaceswithnoothersystemotherthanitspowersource.ThechangeofanARMsetpointdoesnotaffecttheabilityoftheARMoranyotherequipment.Theconsequencesofanaccidentarenotchangedbytheproposedaction.Thereis.nodirectaffectonanyotherequipmentthatmaybepartoftheaccidentinitiationormitigation.Also,thefunctionoftheARMsystemisnotchangedbythisaction.Theconsequencesof,equipmentmalfunctionarenotaffectedbyasetpointchange.ThearearadiationmonitoringsystemdoesnotdirectlyaffectanyautomaticfunctionandthischangeonlyenhancestheadministrativeprocessassociatedwithchanginganARMsetpoint.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.Thearearadiationmonitoringsystemdoesnotperformanactivefunctionotherthanalarmandindication.Thissetpointchangedoesnotchangethephysicalconfigurationofthesysteminanyway.Assuch,itdoesnotaffectthe'potentialofthesystemtobeanaccidentinitiator.AreviewofFSARChapter15andassociateddocumentationindicatesthatarearadiationmonitoringisnotapotentialaccidentinitiator.IIINo.AreviewoftheTechnicalSpecificationsindicatesthattheonlyAreaMonitorscoveredarethosethatarecriticalitymonitors(ref.Table3.3.7.1-1).Noneofthechannelsencompassedbythisprocedurechangearecriticalitymonitors.Also;aspointedoutabove,thissystemdoesnotprovidedirectsupportforanyothersystemincludingthosecoveredbytheTechnicalSpecification.Asaresult,thischangedoesnotaffectthemarginofsafetyasdefinedinthebasisofanyTechnicalSpecification.

95-212ocp*,uiThismodificationwillinstalla6diameterpenetrationthroughtheUnit1TurbineBuildingWestexteriorconcretewallbetweencolumnlines16and17atapproximately7'-6aboveElev.676'-0"toprovidemoredirectandsaferaccesstotheUnit1condenserareaforHydrolazeractivities.Q/hfhSIE:INo.FSARChapter6,'EngineeredSafetyFeaturesandFSARChapter13,"AccidentAnalysishavebeenreviewed.Therearenoengineeredsafetyfeaturesoraccidentscenariosthatwouldbeimpactedbytheactionstakenperthismodification.ThismodificationwillconformtoallthedesigncriteriaasspecifiedpertheSAR,thusthestructuralintegrityofthe,Unit1TurbineBuildingconcretewall,inwhichthenewpenetrationwillbeinstalled,willbeassured.ThenewpenetrationwillmeetthedesignandshieldingrequirementsasspecifiedintheSAR.Sincethenevrpenetrationwillbeproperlysealedduringnormalfullpoweroperationsoftheplantinwhichtheradiationlevelsarethehighestinthecondenserarea,thismodificationtotheTurbineBuildingwallwillnotincreasetheradiationexposuretoplantoperatingpersonnelorthegeneralpublic.II.No.FollowingtheimplementationofthismodificationboththestructuralintegrityandqualityofshieldingprotectionfortheTurbineBuildingwallwillbemaintainedinaccordancewiththerequirementsandguidelinesprovidedintheSAR.~Basedontheabove,thismodificationwillnotcreateapossibilityforanaccidentormalfunctionofadifferenttyp'ethananyevaluatedpreviouslyintheSAR.IllNo.ThismodificationrepresentsanequivalentconditiontotheexistingconditioninthatboththestructuralintegrityandthequalityofradiationprotectionoftheUnit1TurbineBuildingwallhasbeenmaintained.NoneoftheparametersthatarethebasisfortheUnit1TechnicalSpecificationswillbeaffectedbythismodification.Basedontheabove,thismodification'willnotreduceanymarginofsafetyasdefinedinthebasesforanyTechnicalSpecification.

95-213TheprocesssetpointforreactorsteamdomeATWS-RPThigh'pressureswitchesPSB211N045A,B,C,Dwillbeincreasedfrom1108psigto1123psigforpoweruprateconditionsduetoPowerUprate.No.TheATWS-RPTtripinstrumentationisdescribedinFSARSection7.1.2a.1.30,andassociatedaccidentscenariosarediscussedinFSARSection15.8andAppendix15A.IINo,Since,fortheanalyzedevents,theassociatedTechnicalSpecificationstripsetpointsandallowablevalueremainunchangedandthesafetyfunctionoftheswitchesremainsunchariged,thissetpointchangedoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.Since,fortheanalyzedevents,theassociatedTechnicalSpecificationstripsetpointandallowablevalueremainunchangedandthesafetyfunctionoftheswitchesremainsunchanged,thissetpointchangedoesnotcreatethepossibilityofanaccidentofadifferenttypethananyevaluatedintheSAR.Since,fortheanalyzedevents,theassociatedTechnicalSpecificationstripsetpointandallowablevalueremainunchangedandthesafetyfunctionoftheswitchesremainsunchanged,thissetpointchangedoesnotcreatethepossibilityof.amalfunctionofequipmentofadifferenttypethananyevaluatedintheSAR.IIINo.TheTechnicalSpecificationTripSetpointandAllowableValueforthereactorsteamdomepressureforATWS-RPTare'iveninTable3.3.4.1-2oftheTechnicalSpecifications.ItshouldbenotedthattheATWS-ARIfunctionisnotpartoftheplanttechnicalspecifications.TheexistingTripSetpointandAllowableValueare1135psigand1150psig,respectively.TheTripSetpointof1135psigandAllowableValueof1150psigremainunchangedbySetpointChangePackagej94-2042.Therefore,sincetheTripSetpointandAllowableValueforPSB211N045A,B,C,Dremainunchanged,andsincetherearenoadverseeffectsonsafetyfunctionsasaresultofthissetpointchange,thisSCPdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-214IncreasethehighpressurealarmsetpointforswitchPSHC321K636to1050psigbasedonPowerUprateconditions.Thealarmshallwarntheoperatorthatreactorpressureisincreasingandapproachingthescramsetpoint.No.FSARSections7.2,7.5,7.7,10.3and15.2werereviewd.TheReactorProtectionSystemisdescribedinFSARSection7.2.ReactorscramonhighreactorpressureisalsodiscussedinFSARSection15.2TheonlyeventsforwhichthehighreactorpressurescramisrelieduponarePressureControllerFailure-Closed(FSARSection15.2.1)andTurbineTripatLowPowerwithFailureofBypass(FSARSection15.2.3.2.2.3).However,thereactorpressurealarmisnotconsideredforthisFSARevaluation.SwitchPSHC321K636'isnon-safetyandonlyprovidesanalarmonhigh'reactordomepressure.Sincetheinstrumentloopisnon-safety,onlyprovidesawarningalarmforhighreactordomepressure,andtheequipmentoperateswithinitsdesigncapabilityattheincreasedpressure,thissetpointchangedoesnotincreasetheprobabilityorconsequencesofanaccidentofamalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.No.Thissetpointchangedoesnotinvolveanyhardwareorsystemfunctionchanges.Thepowerupratesetpointprovidesanalarmwhichwarnstheoperatorthatreactordomepressureisincreasingandapproachingthereactorscramsetpoint.Thisrevisedprocesssetpointaffectsanon-safetyinstrumentloop,andthefunctionofthedevicesisnotchanged.Thepossibilityofadifferenttypeofaccident,notpreviouslyanalyzed,isnotapplicable.Therefore,thismodificationdoesnotcreateapossibilityforanaccidentofadifferenttypethananyevaluatedpreviouslyintheFSAR.Therevisedprocesssetpointaffectsanon-safeyinstrumentloop.Theoperabilityofthedevicesisnotaffected.Thereisnopossibilityofa.differenttypeofmalfunctionduetothissetpointchange.Therefore,thismodificationdoesnotcreatethepossibilityforamalfunctionofadifferenttypethananyevaluatedpreviouslyintheFSAR.IIINo.AreviewoftheTechnicalSpecificationsconfirmsthatthereactorpressurevesselalarmsetpointforPSHC321K636isnotrequiredtoenforceanyTechnicalSpecifications.Therefore,thissetpointchangedoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-215icPIRevisethetwosetpointsfortheRodWorthMinimizer(RWM)SteamFlowInterlockandAlarmflowswitchFSL-C32-1K608accordingtoGeneralElectricReport,"GeneralElectricSusquehannaSteamElectricStationSetpointsforPowerUprate,"GE-NE-901-0264592,Section2,dated7/10/92,fortherelatedloop,asrevisedinGELetterSPU-9399,datedDecember1,1993.No.FSARSections4.1.3,4.1.6,1.2.6,7.1,7.2,7.6,7.7andChapter152werereviewed.IncreasingthesetpointsofFSL-C32-1K608,RWMSteamFlowInterlockandAlarmdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccidentorwhichwouldbeusedpriortoanaccident.IncreasingthesetpointofFSL-C32-1K608,RWMSteamFlowInterlockandAlarmdoesnotchangethefunctionorperformanceoftheRWMorSteamFlowTotalizingsystems.Thesearenotrequiredtomitigateanaccident.IncreasingthesetpointsofFSL-C32-1K608,RWMSteamFlowInterlockand'Alarmdoesnotaddorchangeanycomponentswhosefailure'wouldinitiateanaccidentorwhichwouldbeusedpriortoanaccident.TheRWMandSteamFlowTotalizingsystems'arenotrequiredtomitigateanaccident.Therefore,itdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentortheconsequencesofamalfunctionofequipmentaspreviouslyevaluatedintheFSARwithregardtoradiologicalconsequencesorthehealthandsafetyofthepublic.No.IncreasingthesetpointsofFSL-C32-1K608,RWMSteamFlowInterlockand.Alarmdoesnotchangethefunctionorperformanceoftheinstrumentandthissystemisnotusedinanaccident.Further,theincreasesofthesetpointsremainwithintheacceptableoperatingrange.oftheswitch.Therefore,itdoesnotcreatethepossibilityofanaccidentofadifferenttypeorthepossibilityformalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.,PlantTechnicalSpecificationSections3.1.4.1and4.1.4.1ofUnit1statethattheRWMmustbeoperableinoperationalconditions1and2whenthermalpo~erislessthanorequalto20%ofrated.Theminimumallowablelowpowersetpointis20%ofratedthermalpower.Thesetpointwasestablishedtoprotectagainstexceedingtheanalyticallimitof20%powerasreferencedintheaboveTechnicalSpecifications.Sincethenew'setpointisincompliancewiththeTechnicalSpecifications,theproposedactionwillnotreducethemarginofsafetyasdefinedinthebasisofanyTechnicalSpecification.

95-216Thischangesthesetpointsoftheprocessnon-technicalspecification'setpointsfortheRodBlock.Monitor(RBM),ChannelsAandB,forbothsingleandtwoloopreactorrecirculationoperationforPowerUprate.INo.Therodblockmonitorandassociatedsetpoints'aredescribedinFSARSection7.7.1:11.TherodblockmonitordoesnotperformanysafetyfunctionandisnotrequiredforthesafeshutdownoftheplantperSection7.7oftheFSAR.ThissetpointchangedoesnotchangethefunctionoftheRBM.Thissetpointchangedoesnotrepresentachangefromcurrentlimits.'Basedontheabove,theproposedactiondoesnotincreasetheprobabilityofoccurrenceorthe'consequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.llNo.IllNo.SincetheproposedactionisrequiredtoensureallrodblockmonitortripsetpointsareconsistentwiththecyclespecificcontrolrodwithdrawalerroranalysisandsincetheproposedactionwillnotchangethefunctionoftheRBMandanyotherplantequipment,thissetpointchangedoesnotcreatethepossibilityofanaccidentormalfunctionofequipmentofadifferenttypethananyevaluatedpreviouslyintheFSAR.rThetechnicalspecificationsapplicabletothe,RBMincludetechnicalspecification3.3.6,Table3.3.6-2,technicalspecification3.4.1.1.2.5.a,andbases3/4.4.1.ThesetechnicalspecificationapplytotheRBMtripsetpointswhichhavebeenevaluatedandjustifiedbythetechnicalspecificationschanges,safetyassessmentandSignificantHazardsConsiderationsevaluationincludedintheproposedLicensingAmendmentNo.168preparedforUnit1forPowerUprate.Therefore,thesetechnicalspecificationsetpointsdonotneedfurtherevaluationandarenotconsideredpartofthisSafetyEvaluationReport.TheRBMsetpointsevaluatedbythisSafetyEvaluationReportarethenon-technicalspecificationrelatedsetpointsthatwererevisedtomaintainoperatingmarginfromtherevisedtechnicalspecificationsetpoints.However,sincethesesetpointsarenottechnicalspecificationrelated,themarginofsafetyasdefinedinthebasisofanytechnicalspecificationsisnotreduced.

95-217Toeliminatethesolenoidactuatordamage,thismodificationwillinstalltworeplacementsolenoidmountingbracketsweldedtothesafetybreakframe,twosmallhydraulicshockabsorbers,anewstyleendplatewithashockpad,andareplacementsafetybrakecoverwithawindowforsafeviewingon'therefuelingplatforms'ainhoists.INo.FSARSection9.1.4,Table9.1.6A,9.1.6B,Sections3.2-1and15.7.4havebeenreviewed.DroppingofafuelassemblyontothereactorcorebytherefuelingplatformisananalyzedconditionasoutlinedinSection15.7.4"FuelHandlingAccident.Thenormalmainhoistmotorbrakewillremainunchanged;however,thesafetybrakeimprovementswillincreasetheoverallreliabilityofthebrakingsystemtocontroltherateofverticalmovementoffuel.Thismodificationdoesnotadverselyaffectorchangethedesignfunctionofthe'refuelingbridgemainh'oistandwillcomplywithallthedesignrequirementsasspecifiedintheSAR.Theproposedmodificationdoesnotinvolveaprecursoroforcontribu'tortoanyevaluatedaccidentsinvolvingoff-sitedose.Therefore,therewillbenoincreaseintheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.IINo.Theproposedmodificationwillnotresultinthelossofsafetybrakefunction.TheproposedimprovementswillhelptodecreasethedamageandproblemsassociatedwiththepresentconfigurationthathavefacedSSESandotherplants...ThismodificationwillmeetallthedesignbasiscriteriaasspecifiedintheSAR.Basedontheabove,theproposedmodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.Unit1and2TechnicalSpecification3/4.9.6providessurveillancerequirementsfor.therefuelingbridge/platformtodemonstratethatitisoperablepriortoitsuse.AlthoughverificationofSafetyBrakeoperationisnotaTechSpecrequiredsurveillance,theproposedmodificationwillincreasethebrakesystemreliability(therebyincreasingthemarginofsafety)incontrollingfuelmovementandpreventingfueldropaccidents.Basedontheabove,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-218Thismodificationaccomplishesthenecessaryinstallation,connections,andtestingtoestablishfunctionalityoftheLocalAreaNetwork(LAN's)andLANbackboneinterconnectionsinthePowerBlocks.Rlh5$fE;INo.TheLANdoesnotinteractphysicallynorfunctionallywithequipmentimportanttosafety.ThereisnoLANequipmentinstalledinprimarycontainment,InterconnectionsbetweentheLANequipmentlocationsarebynonconductingopticalfiber.TheFSARwasrevised,particularlytheaccidentsdescribedinChapter15.Thesystemdoes.notaffectaccidentprevention,detection,mitigation,supportingsystems,anddoesnot'createanyadditionalconsequentialthreatstomitigation.Therefore,themodificationdoesnotincreasetheprobabilityofanaccidentevaluatedintheFSAR.ThemodificationdoesnotincreasetheconsequencesofanaccidentevaluatedintheFSAR.Themodificationdoesnotincreasetheprobabilityofoccurrenceofamalfunctionofequipmentimportanttosafety..Themodificationdoesnotincreasetheconsequencesofamalfunctionofequipmentimportanttosafety.IINo.Theequipment.housingarestandardHoffmanboxesmountedinaspartofmodification94-3016Awithsupportsdesignedtoaccommodatethespecifiedweightlimits.Theheatloadsalsohavesubstantialmarginbeforereachinglimitsrequiringformalevaluation.There.arenofluidscontainedwithinnorconnectedtotheLANequipment.Non'-conductingopticalfibers'interconnecttheequipmenthousings.Theonlyenergysourcewithintheboxisthesupplied120VACwhichisinstalledwithstandardplantmethods,andissuppliedviacircuitbreakers.Functionally,theLANprovidesacommunicationssystemwhichisnotrequiredforanyplantsafetyresponse.Therefore,themodificationdoesnotcreatethepossibilityforanaccidentofadifferenttypethatanypreviouslyevaluatedintheFSAR.Themodificationdoesi1otcreatethepossibilityforamalfunctionofadifferenttypethanpreviouslyevaluatedintheFSAR.IIINo.Themodificationinstallsanewcommunicationssystem.Thesystemdoesnotphysicallyinteractwithsystemsrequiredforthesafeoperationoftheplant."fheheatloadsaddedateachlocationarelessthan300wattsandarewell'withinallowablevalues.Theelectricalsupplyisfromnon-ClasslElightingpanels,powerpanels,or,intwocases',asecurity120VACdistributionpanel.Theunitsareseismicallymountedinseismicbuildings.ThenewsystemisnotaTechSpecsystemnordoesitperform'nyfunctionimportanttosafety.Therefore,theproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanytechnicalspecification.

95-219DemonstrationthatPowerUpratetestplanchangesdonotrepresentunreviewedsafetyquestionsforTest11-LPRMCalibration,Test12-APRMCalibration,Test22-PressureRegulator,Test23-FeedwaterSystem,WaterLevelSetpoint,Test24-TurbineValveSurveillance,andTest49-MainSteamLine'RadiationMonitor.'No.FSARSection14.2.12.6wasreviewedforeachtest.Theobjectivesofeachtestarestillmet.Thereforethischangedoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.TheUnit2PowerUprateTestProgramdidnotaltertheobjectivesofthetestsasdescrbedinChapter14oftheFSAR.Allthechangesweremadetoavoidareasofinstability,avoidexceedingthelicensedpowerlevel,andavoidspuriousscrams.'ThechangesconformedtoallTechnicalSpecificationsineffectatthetimethetestswereconducted.ThereforethechangestothetestprogramdidnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.ThechangesidentifiedaboveconformstrictlytothepostpoweruprateTechnicalSpecifications.AllthechangestothetestprogramweremadetoinsurethattherewasadequatemarginbetweenplantoperatingparametersandTechnicalSpecificationlimits.ItcanthusbeconcludedthatthemarginofsafetyasdefinedinthebasisforanyTechnicalSpecificationwasneverreduced.

95-220ThismodificationwillinstallaChengRotationVane(CRV)inthedischargeheadofRiverWaterMakeup(RWMU)pumpsOP503A,CBDtosuppressdestructiveflowabnormalitiesthatcreateunduewearontheimpellershaftbearings,thusnecessitatingnumerouspumpreworks.INo.TheRiverWaterMakeupSystem,inparticular'umpsOP503A,CandD,servesnosafetyrelatedfunction.TheonlyconnectionRWMpumpsOP503A,CandDhavewithsafetyrelatedsystemsorcomponentsisasonesourceofmakeupwatersupplytothespraypond.FSARSection9.2.7,UltimateHeatSink,Subsection9.2.7.1,states,"Theultimateheatsinkiscapableofprovidingsufficientcoolingwaterwithoutmakeuptothespraypondforatleast30days...".FSARChapters6and15havebeenreviewedinrelationtothismodification,andbasedontheabove,theproposedactionsdonotincreasetheprobabilityofoccurrenceorthe.consequencesofanaccidentormalfunctionofequipmentimportantto'safety,aspreviouslyevaluatedintheSAR.IINo.Thismodificationwillonlyenhancethe'performanceoftheRWMUpumpsOP503A,CandDbyeliminatingorreducingpumpdischargeflowabnormalities,therebyminimizingpumpmaintenanceontheshaftbearings.ThemodificationwillensurethatRWMUpumpsOP503A,CandDaremorereliablecomponentsandcanperformtheirdesignfunctionsasasourceofmakeupwatertothespraypond.Basedonthis,andthefactthattheRiverWaterMakeuppumpsarenotdedicatedtohelpduringplantemergencysituations,theproposed'actionofthismodificationdoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.ThebasesforallpotentiallyaffectedTechnicalSpecifications,including3/4.4.9,3/4.7.1,3/4.7.2andinparticular3/4.7.3,havebeenreviewed,anddonotaddresstheRiverWaterMakeupSystemnortheRWMUpumps.Thismodificationshallenhancetheperformanceandreliability'oftheRWMUpumpsbypreventingthefluidseparationatthedischargeelbowthatleads.toturbulentflowandexcessivestressontheshaftbearings.Consequently,theadditionofaCRVtothedischargeheatofRWMUpumpsOP503A,CandDwillnotreduceanymarginofsafetyasdefinedinthebasisofanyTechnicalSpecification.

95-221OC5III,UidInstallspermanentSupplementalDecayMeatRemoval(SDHR)pipingwithanalternateServiceWaterProcessRadiationDetectorandRxBldg.ChilledWaterpipingthatwillconnecttotemporarycoolingunitslocatedoutsidetheRxBldg.S/hihlhfE:No.Theproposedactionsdonotincreaseth'eprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR,Thenewpiping,valves,supports,insulation,wallattachmentsandpenetrations,radiationdetector,preamplifier,andcablingarenotinitiatorsofanyaccidentsevaluatedintheSAR,otherthanpostulatedmoderateenergypipecracks(FSAR3.6)whichwerefoundacceptable.ThemodificationshaveanegligibleeffectontheServiceWaterandtheFuelPoolCoolinga'ndCleanupresponsetotheNormalandHydrodynamicLoads.TheClass1Epowersupplyisadequatelyisolatedfromthenon-safetyrelatedradiationmonitoringequipmentandphysicaldamagetothenewcablingwillnotadversely'impactexistingClass1Ecablesincommonraceway.TheRxBldg.VentilationZonesareunaffectedbythismodificationandtheSecondaryContainmentsafetyrelatedfunctionsofmaintainingaradioactivebarrierandanegativepressureof.25"wgareassured.ThesemodificationshavenoeffectontheRx.Bldg.structural,radiationandfirebarrierfunctions.TheradiologicalanalysesincludedinFSARAppendix9A,15.6.2,15.6.5,and,15.7.4arenotaffected.IINo.TheproposedactiondoesnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.ThenewpipinghasbeendesignedforallNormalandHydrodynamicLoads.TheClass1EpowersupplyisproperlyisolatedfromthenewradiationdetectionequipmentandtherearenonewcablefaultswhichcandamageaffiliatedClass1Ecables.Thefailureoftheportablenon-safetycoolingequipmentcoulddraintheSDHRortheRxBldg.ChilledWaterpiping;however,nonewmalfunctionsofequipmentimportanttosafetyarecreated.No.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.DCPs94-3057/3058maintainthemarginofsafetyinTechSpecs3/4.3.7&3/4.11.1byaddingasecondprocessradiationdetectorandpreamplifierinthedischargeofthecommon12SDHRpipingwhichduplicatesthefunctionofthepresentlyinstalleddetectorandpreamplifierduringSDHR.use.DCPs94-3053/3054maintainthemarginofsafetyinTechSpecs3/4.6.585.2.3byrequiringallRx.Bldg.penetrationstobeappropriatelysealed,ensuringthatthethreeRx.Bldg.VentilationZonesarepreserved.ThenewpenetrationsintheRx.Bldg.wallsaresealedwithamaterialanddepththatensuresthatthe3-HourFireBarrierisreestablished(TechSpecs3/4.7.?).

95-222TheproposedactionwillprovideaRefuelFloorWetlifeSystemconsistingo'fthreesubsystems,'.e.,WatertightHookBoxforSteamDryer/SteamSeparatorStrongback/SlingAssembly,MSLPlugsincludingMSLPlugsRestraintRingandMSLPlugsI/RToolandRigidPoleHandlingSystem.No.Currently,therearenoaccidentsormalfunctionsintheFSARthatarespecificallyrelatedtothedisassemblyandreassemblyoftheRPVortheRefuelFloorWetliftSystem.However,thereareaccidentsevaluatedintheFSARconcerningloaddropsoverfuel.ThespecificeventanalyzedintheFSARcoveringobjectsfallingontothefuelisthefuelhandlingaccidentdescribedinSection15.7.4.TheWatertightHookBoxhasbeendesignedtomeettherequirementsofNUREC0612andPPAL'sHeavyLoadsProgram.EvaluationofWatertightHookBox'sadditionalweightforloaddropshasbeenevaluated.Theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentotmalfunctionof.equipmentimportanttosafety.No.Theonlyaccidentormalfunctionthatcouldresultbythe.useoftheWatertightHookBoxwouldbeaheavyloaddropoftheSteamDryerorSteamSeparator.HeavyloaddropheightsandloadpathsfortheSteamDryerandSteamSeparatorhavenotbeenimpactedbytheproposedaction.Thedropheightsarelowerthan.thosepieviouslyevaluatedandtheloadpathsarethesame,therefore,thepotentialforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheFSARdoesnotexist.IllNo.TheTechnicalSpecificationsdonotaddresstheuseoftheReactorBuildingCraneswithaWatertightHookBoxforRefuelFloorWetliftSystemorotheractivitiesinvolvedwiththedisassemblyandreassemblyoftheRPV.TechnicalSpecificationSections3/4.9.8and3/4/9.9addressthewaterlevelsintheReactorCavityandSpentFuelStoragePoolswhicharerequiredtobe22feetoverthetopoftheRPVflangeand22feetoverthetopeofspentfuelassemblies.MakeupcapabilityisavailabletomaintaintherequiredwaterlevelintheeventtheSteamDryerorSteamSeparatordropsandpenetratesthelineroftheEquipmentStoragePoolaspostulatedintheheavyloadsdropanalysis.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-223Thischangeinstallscablesandracewayfor1)thefuturereplacement'ofexistingcomputersystemswithPlantIntegratedComputerSystemReplacement(PICSY)and2)anewLocalAreaNetwork(LAN).ThischangeincludesinstallationofcablesintheReactor,Turbine,andRadwasteBuildings,andtheControlStructure.No.Chapters,3,7,8,9,15and18oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisandNUREGC776werereviewed.TheadditionofLANandPICSYCablesdoesnotaffectanyofthepostulatedinitiatingeventsidentifiedinChapters3,7,8,9,15,and18oftheFSAR,theDesignAssessmentReport,thecurrentReloadAnalysisandNUREG-0776.Therefore,thecable,raceways,andequipmenthousingsinstalleddoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.IINo.ThepossibilityofanaccidentofadifferenttypethananypreviouslyevaluatedintheFSARwillnotbecreated.Thecablesinstalleddonotcreatethepotentialforanytypeofaccidentsincetheyareinstalledinaccordancewithplantspecificprocedures.Thecableinstallation'doesnotaffectthe'plantcomputeroranyothersystem:Theequipmenthousingsandpatchpanelsareseismicallymountedinseismicbuildings.Potentialissuesofsafetyimpact,combustibleloading,AppendixR,firedetectionandsuppression,andelectricalseparationhavebeenaddressedinthedesign.Therefore,thecableandequipmenthousingsdonotcreatethepos'sibilityofamalfunctionofadifferenttype.IIINoBaseduponreviewoftheTechnicalSpecifications,theirimpliedbases,theFSARandNUREG0776,SafetyEvaluationforSSES,includingSupplements1through7,theadditionofLANandPICSYcablesdonotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-224TP->>,ThepurposeofTP-264-021istogatherdatawhileoperatingthereactorrecirculationpumpsabovespeedsof1515RPM.INo.LicensingTopicalReportNE<92-001andGESIL551werereviewed,BasedonthisreviewitcanbeconcludedthatthatperformanceofTP-26~21willnotincreasetheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheFSARorLicensingTopicalReportNE<92-001.IINo.TP-264-21returnsVnit,2toincreasedcoreflowconditions.TheseconditionsarethesameconditionsdescribedinLicensingTopicalReportNE<92%01whichwasreviewedandapprovedbytheNRC.TheworstpossibleoutcomeofperformingTP-264-021isthedevelopmentofaleakinsidecontainment.TheSusquehannaunitsaredesignedtocollect,detect,andmeasureunidentifiedleakageinthecontainment.Thedescriptionoftheinstalledleakagedetection'systemsandtheplantsresponsetoaleakisdescribedandanalyzedinSection5.2.2(DetectionofLeakageThroughReactorCoolantPressureBoundary)oftheFSAR.Thereforeitcanbeco'ncludedthattheperformanceofTP-264-021doesnotcreatethepossibilityfor,anaccidentormalfunctionofadifferenttypethananypreviouslyevaluatedintheFSARoiLicensingTopicalReportNE-092%01.IIINo.TP-264-021doesnotdeviatefromanyoftheconditionspreviouslyreviewed4ytheNRC;thereforetheTechnicalSpecifications,asmodifiedbyAmendment103,boundoperationasdirectedTP-264-021andthereforethemarginofsafetyisunchanged.Thesubjecttestprocedureaddsconservativeadministrativecontrolsandadditionaldatagatheringrequirementswhenoperatingatcoreflowsgreaterthan100Mlb/hr.Therefore,theperformanceofTP;264-021doesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

~95-225C.UThismodificationwilleliminatealoopsealinthestatorcoolingwaterstoragetankventinordertoprovideafreeflowdesignandmaintainidealoxygenlevelsinthestatorcoolingwater,whichwillreducecorrosionofthestatorwindings.INo.TheproposedmodificationonlyaffectscomponentsintheStatorCoolingSystem.TheStatorCoolingSystemdoesnotperformanysafetyfunctionsrequiredtopreventormitigatetheconsequencesofabnormaloperationaltransientsoraccidents.Therefore,theproposedactiondoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluationintheSAR.llNo.Theproposedmodificationdoesnotalterthedesignbasis,thefunction,northeoperationofthenonaafetyrelatedStatorCoolingSystem.Therefore,theproposedmodificationdoesnot.createapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.Theproposedmodifi'cationdoesnotjeopardizeordegradethefunctionoroperationoftheStatorCoolingSystemoranyplantsystemgovernedbytheTechnicalSpecifications,specificallySection3/4.8,ElectricalPowerSystems.NoneoftheparametersthatarethebasesfortheTechnicalSpecificationswillbeadverselyimpactedbythemodification.Therefore,theactionstakenbytheproposedmodificationwillnotreduceanymarginofsafetyasdefinedinthe'basisforanyTechnicalSpecification.

95-226NL-94015,Units1and2ChangestheHPCIandRCICpumproomcoolerinlettemperaturesetp'ointstoagreewiththeroomambientsetpoints.INo.TheFSARdoesnotspecificallyanalyzethesmallleaksonwhichthetemperaturesetpointsarebased.OtheraccidentswhichresultincoolantleakageoutsidecontainmentareanalyzedinFSARSections15.6.2(InstrumentLineBreak)and15.6.4(SteamSystemPipingBreakOutsideContainment)~Bothoftheseareassumedaccidentswithnocausesidentified.TheanalysisinSection15.6.4istheenvelopingevaluationforpipebreaksoutsidecontainment.Theproposed25gpmleakageratebasisiswellbelowtheleakagecorrespondingtoacatastrophicpipefailurefortheapplicablesystempipinganddoesnotsignificantlyincreasetheriskofabreak.IINo.'TheproposedsetpointchangedoesnotaffectanysystemsotherthantheHPCIandRCICsteamleakdetectionsystemsanddoesnotaffecttheabilitytodetectandisolateleakage.Althougha25gpmleakisnotspecificallyanalyzedintheFSAR,itisboundedbytheanalysisinChapter15.6.4.Therefore,theproposedsetpointchangedoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypethananypreviouslyanalyzedintheFSAR.No.ThetemperatureswitchesandsetpointsarelistedinTechnicalSpecification3.3.2"IsolationActuationInstrumentation"buttheTechnicalSpecificationBasesdonotdiscussthesetpointbasiswithrespecttoleakagerate,processconditions,ortimetodetection.Theproposedsetpointchangeaffectsonlytheprocesssetpoint,nottheAllowableValueorTripSetpointlistedintheTechnicalSpecifications.

95-227ModifyandreplacetheexistingcomponentsoftheTaproggeTypeHE<CTCSballstrainersectionswithTaproggeTypeMFdesignstrainerstoimprovecondenserperformanceandgrosselectricaloutput.SJlHhfBRY:No.FSARSections8.3.1,10A.5and15were'reviewedforpreviouslyevaluatedaccidents.Noaccidentswereinitiatedby,norrequiretheCWorCTCSsystemsforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.TheCWandCTCSsystemsarenotsafetyrelatedorrequiredforsafeshutdownofthereactor,ormitigationofadesignbasisaccident.TheworstcasemalfunctionofequipmentthatcanbepostulatedisthefailureoftheCTCSstrainersections.ThesemodificationsprovidestrengthenedCTCSstrainersectionsandthereforethi'spotentialisreduced.NoneoftheitemsoftheCTCSequipmentaresafetyrelated.Therefore,thesemodificationswillnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyanalyzedintheSAR.hIINo.-AsaresultofthereviewoftheFSARsectionsreferenced,nonewaccidentsormalfunctionsofequipmentimportanttosafetyarepostulatedasaresultofthismodification.Basedupontheabove,itisconcludedthattheproposedmodificationsdonotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethanpreviouslyevaluatedintheSAR.IIINo.ThemodificationsdonotreducethemarginofsafetydefinedinthebasesofanyTechnicalSpecificationssince1}theTethnicalSpecificationsdonotaddressthenonsafetyrelated,CWandCTCSsystemsand2)therearenoimpactstoanyotherTechnicalSpecificationsystems.

95-228DCP94-9090ThisdesignchangewillreplacetheZenerdiodesintheFeedwaterControlSystemwithconventionaldiodeswithan800Vdcpeakinversevoltage.Thediodes(reversebiased}inparallelwiththerelays,willperformtopreventarcsuppressionbyallowingthestoredenergyintherelaystocirculatethroughtherelaysatcontactopening.No.Thediodereplacementdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafety,aspreviouslyevaluatedintheSAR.TheFeedwaterControlSystemisnotconsideredassafetyrelatedequipment.TheproposeddesignchangewillincreasethereliabilityoftheFeedwaterControlSystem,bypreventingaplantcondition(batteryintheequalizemode)whichcould'leadtoanerroneousfe'edwaterflowsignalwhichcouldleaktoatransient.TheprobabilityofoccurrenceofthetransientevaluatedinFSARSection15.1.2,leveltransientsduringnormaloperatingconditions,spuriousturbinetrips,and.anychallengestosafetysystemsfromspuriousLevel8tripsarereduced;Conditionsresultinginthediodescreatingashortoropencircuithavebeenevaluated,andfoundnottohavesafetyimplications.No.TheproposedactiondoesnotcreatethepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.Theproposedchangeisacomponentreplacement,TheexistingZenerdiodeswillbereplacedwithconventionaldiodes,meetingtheoriginaldesignintentforarcsuppression.IIINo.TheproposedactiondoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.TheTechnicalSpecificationsmention.themainturbinetripinputfromtheFeedwaterControlSysteminSection3/4.3.9andTable3.3.9-1.Byreplacingthediodes,increasingthereliabilityofthehighlevelcircuitry,wewillensurethattheTechnicalSpecificationrequirementisnotviolatedbyafailureofthediode.

95-229Installationofaflowsensortomeasurecoolingtowerblowdownwaterflowdischargetotheriver.No..Sections10.4.5,11.2.6,11.5andChapter15oftheFSARwerereviewed.Addinga'ewmeasurementoftotalwaterflowdischargetotheriverforuseintheLRWdischargevalvelogicdoesnotincreasetheprobabilityofoccurrenceofanaccidentaspreviouslyevaluatedjntheFSARbecausethemodificationdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccident.AddinganewmeasurementoftotalwaterflowdischargetotheriverforuseintheLRWdischargevalvelogicdoesnotincreasetheconsequencesofanaccidentaspreviouslyevaluatedintheFSARwithregardtoradiologicalconsequencesorthe'ealthandsafetyofthepublicbecausethemodificationdoesnotchangethefunctionorperformanceo'ftheliquidradwastesystem.AddinganewCoolingTow'erBlowdownCompositeSamplerInterfaceEnclosuretoprovide'sa'mpletaps,returns,andelectricalinterfaceforaportablecompositesamplerdoesnotincreasetheprobabilityofoccurrenceofanaccidentaspreviouslyevaluatedintheFSARbecausethemodificationdoesnotaddorchangeanycomponentswhosefailurewouldinitiateanaccident.IINo.Addingthenewenclosuredoesnotincreasetheconsequencesof.anaccidentaspreviouslyevaluatedintheFSARwithregardtoradiologicalconsequencesorthehealthandsafetyofthepublicbecausethemodificationdoesnotchangethefunctionorperformanceoftheliquidradwastesystem.ThemodificationsduenotchangethefunctionorperformanceoftheLRW.Failureofthemodifierwouldonlyresulti'nlossofliquidradwasteAowrecording.Therefore,theproposedactiondoesnotcreateapossibilityforanaccidentor'alfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.Tech.Specs.3.3.7.10,4.3.7.10,3.11.1.1,4.11.1.1,3.11.1.2,4.11.1.2,3.11.1.3,4.11.1.3.1,4.11.1.3.2and3.12.1werereviewed.ThismodificationdoesnotreducethemarginofsafetydefinedinthebasisforanyTech.Spec.

95-230ThischangecontrolsthereplacementofexistingreactorvesselinstrumentationcondensingchambersXY-B21-1D004AandB,respectively.Thenewchambershavebeenmodifiedwithanoutletforanadditionalvent,pipedtotheinstrumentvariableleg,Theventallowsforremovalofnonwondensablegasesfromthecondensingchamber.SURlhlhlUQNo.FSARSection15.6.2'InstrumentLineBreaksstatesthatitislesssevereandthereforeboundedbyFSARSection15.6.5'LossofCoolantInventory.Lossofcoolantinventoryisassumedatworsecaseofdoubleendedbreakofthelargestlinewhileatnormalplantoperatingtemperature,pressureandflow.InplantCondition5,thereactorisat0psig(exceptforhydrostaticloadduetowaterlevel),atapproximately110'Fvs540'F,and'noflow.InCondition5,theprobabilityofanaccidentisextremelylow.Additionally,FSARSection6.3.1.1statesthatECCSistoprovideforanyprimarylinebreakuptoandincluding,thedoubledendedbreakforthelargestline.Duringthistest,theworstcaseleakwouldbetheplugdislodging,whichislessseverethaneitheraccidentsdescribedintheFSARduetobeinginCondition5.Ifaplugwastodislodge,theavailableloopofCoreSprayandESWwillbesufficienttoprovidemakeup.FSARSection9.1.2discussesthepotentialdrainingofthespentfuelpoolthroughfailedfuelpoolgates.Thefuelracksandthecontainedfuelwillremaincoveredwithwater.Section15.0.3.2.1.1statesthattransientandaccidentscenariosshouldconsideraninitiatingeventcomprisedofoperatorerrorequipmentfailure.Sincetheplugwillnotbesubjectedtoanypressureexceptheadpressurefromcavitylevel,whichwillmaintainpluginnozzle,the'robabilityofnozzlefallingintovesselorcoreisminimal.Theplugswillbetiedoffwithalanyardtopreventplugfromfallingintothereactorvessel.Iftheplugs'weretofallintovessel,nocore/fueldamagewilloccursincetheplugweight(approx5lbs.)isboundedbyfueldropaccident.Therefore,thisTPdoesnotincreasetheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslydescribedi'ntheSAR.Theonlyaccidentormalfunctionthatcouldoccurwouldbethefailureofnozzleplugstocausedrainingofthereactorvessel/cavityandspentfuelpool.ThiseventisdescribedinFSARSections6.3.1,16.6andeven9.1.2,whichresultsinmaintainingthespentfuelpoolracksandspentfuelcoveredwithwater,evenwithoutmakeup.Sincethecalculatedleakageof55gpmiswellwithintheavailablemakeupcapability(oneloopofCoreSprayortwoloopsofESWviaUnit1ESWand/orUnit2ESWthroughSpentFuelPoolCrosstieviaCaskStoragePit),waterlevelcanbemaintainedat22feetabovetheracksandfuel.Therefore,areactorvessel/draindowneventwithrefuelgatesremovedwouldnotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.TechnicalSpecification3.9.8requiresatleast22feetovertopofRPVflangeduringhandlingofirradiatedfuelassembliesorwhenirradiatedfuelassembliesareseatedintheRPV,bothwhileinCondition5.TechnicalSpecification3.9.9requiresatleast22feetoverirradiatedspentfuelinthefuelpool.ThebasisfortheseTechSpecsistoensurethatsufficientwaterdepthisavailabletoremove99%oftheassumed10%iodinegapactivityreleasedfromtheruptureofanirradiatedfuelassembly.Thisminimumwateidepthisconsistentwiththeassumptionsofthesafetyanalysis".Therefore,thisTPdoesnotreducethemarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

0 95-231InstallsnewsupportstoUnit1andaddsbracingtoexistingsupportsfortheskimmersurgetankmakeuplinesbetweentheskimmersurgetanksandthemakeupstationsonbothUnits1and2,INo.Themodificationsdonotaffectsafetyrelatedequipmentorsystems.ItthereforedoesnotaffecttheprobabilityofoccurrenceorconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyasevaluatedintheFSAR.No.Themodificationsdonotaffectsafetyrelatedequipmentorsystems.ItdoesnotcreatethepossibilityofanaccidentormalfunctionofadifferenttypepreviouslyevaluatedintheFSAR.Themodificationsenhancethestructuralcapabilityofthesubjectlinessuchthattheirintegrityisnotcompromisedbyadesignbasisseismicevent.IIINo.TechnicalSpecificationsdonotaddressfuelpoolmakeupduringnormaloperation.TechnicalSpecificationsdoaddressminimumrequiredfuelpoollevel.TheminimumrequiredfuelpoollevelasdefinedinTechnicalSpecification3/4.9.9requires22feetofwaterabovetheirradiatedfuelassemblies(elevation816').This.minimumrequiredfuelpoollevelisbelow,thefuelpoolskimmerweirplateelevationof817'/2"(SEA-ME-418Revision0).Therefore,theskimmersurgetankandconnectionstheretodonotaffecttheminimumrequiredfuelpoollevelrequirementsinTechnicalSpecifications.ThemodificationdoesnotaffectthemarginofsafetyasdefinedinTechnicalSpecifications.

95-232DCP93-9070,Unit1Thismodificationwillprovidestuds,gratingclips,andfloorgratingandsupportsteeltoreplaceElevation738floorgratingaroundthe151F060BvalveintheUnit1PrimaryContainment.SJhQdhfE:INo.Thefloorgratingaddressedbythismodificationis'partofthePrimaryContainmentSystem,Ref.FSARSections3.1.2.2.7,3.8.3.1.5,and3.6andDARSections1A.1.286.1.1.Thegratingandgratingsupportsdonotserveanysafetyrelatedfunctionbutmustbeadequatelyrestrainedtowithstandcertaintransientstopreventthemfrombecoming"missiles"anddamagingsafetyrelatedcomponentsinthearea.Themodificationwillassurethatallworkontheaffectedgratingwillconformtoalloriginalplantdesignandconstructioncodesandtherebypreventthepossibilityoftheproposedactionfromincreasingtheprobabilityofoccurrence.ortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.IINo.TheproposedmodificationwillmeetallthedesignbasiscriteriaasspecifiedintheSAR.TheaffectedgratingandgratingsupportswillbedesignedandinstalledpertheoriginalrequirementsofexistingratinginPrimaryContainmentandistherebyboundedbyanyexistingaccidentandmalfunctionanalysisand/orevaluations.Therefore,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.IIINo.IIThecomponentsaffectedbytheactionstakeninthismodificationar'enotspecificallyaddressedinthebasisforanyUnit1TechnicalSpecification.ThePrimaryContainmentSystemisaddressedinTechnicalSpecificationSection3/4.6.1.BasedonthisandthefactthatthemodificationmeetsallapplicabledesigncriteriaasspecifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-233Anisolationvalvewillbeaddedineach5I8"tubingrundownstreamofSVs12365,12366,12368,12369andupstreamofSV12361.AtestconnectionwitharootvalvewillalsobeaddedinthetubingdownstreamofvalvesSV12366andSV12369.SUhiM1E:NoIINoThismodificationwilladdnewmanualvalvestoisolateportionsofexistingPASSsysteminordertoperformtestSE-173<00inamoreefficient,timelymanner.Thevalveswillbenormallyopenuntilneededforisolation..Thismodificationwillhavenoadverseaffectsontheoperationorfunctionof.thePASSasdefinedintheSAR.ThemodificationwillsatisfyallthedesignrequirementsoftheANSIB31.TCode;therebysatisfyingthedesignrequirementsasspecifiedinFSARSection18.1.21,PostAccidentSampling.Also,theSARhasbeenevaluated,specificallyFS'ARChapter6,EngineeredSafetyFunctionsandFSARChapter15,AccidentAnalysiswhichrevealedthattheproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,therewillbenoincreaseintheprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetyaspreviouslyevaluatedintheSAR.ThemodificationwillmeetallthedesignbasiscriteriaasspecifiedintheSAR.ThetestingcapabilitiesforthefunctionandperformanceofthePASSsystemwillbeenhancedbytheaddition.ofthemanualisolationvalveandadditionaltestconnections.BasedontheaboveandSectionIII,theproposedactionsdonotcreateapossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR.No.ThetubingandcomponentsaffectedbytheactionstobetakeninthismodificationareaddressedinSection6.8.4.coftheUnit1TechnicalSpecification.ThePostAccidentSamplingSystem(PASS)isaprogramrequiredtobeestablished,implementedandmaintainedbytheProceduresandProgramsSection(6.8)ofTechnicalSpecificationSection6.0,AdministrativeControls.TherearenoLimitingConditionsofOperation(LCO)involvedwiththeprogramrequirementsonlythatitistoexistandbemaintained.ThismodificationonlyprovidesenhancementtotheisolationandtestingcapabilitiesforthePASSsystem.BasedonthisandthefactthemodificationmeetsallapplicabledesigncriteriaasspecifiedintheSAR,theproposedactionswillnotreduceanymarginofsafetyasdefinedinthebasisforanyTechnicalSpecification.

95-234Thiscontingencymodificationwillprovideforadditionalsupportofthesmall1drainlinesoffthebottomoftheReactorRecirculationdischargevalvesHV-143F031AandHV-143F0318ifitisconfirmedthattheirpresentnaturalfrequenciesfallwithintherangebetween120and133Hz.Thiswillpreventfatigueoverstressinthe1drainweldsfromharmonicvibrationcausedbytheVanePassingFrequencyoftheReactorRecirculationpumpsunderupratedpoweroperatingconditions.No.FSARChapters6and15havebeenreviewedforthepossibilitythattheactionstakenbythismodificationcouldincreasetheprobabilityofoccurrenceofapreviouslyevaluatedaccident.Particularemphasisduringthis'eviewwaspaidtoFSARSections6.2.1.1.3.3.1,'RecirculationLineRupture';15.3,DecreaseinReactorCoolantSystemFlowRate;and15.6,'DecreaseinReactorCoolantInventory.ThismodificationwillinsuretheintegrityoftheReactorRecirculation1'rainpipingfromdischargevalvesHV-143F031A/BduringincreasedcoreflowpowerupratedconditionsbyalteringthenaturalfrequencyofthelinessotheydonotcoincidewiththeVanePassingFrequencyoftheReactorRecirculationpumpsandleadtofatiguestressfailures.TheDARhasalsobeenreviewed,withparticularattentiontoChapter5,LoadCombinationsfo'rStructures,Piping,andEquipment".Thismodificationdoesnotadverselyaffectorchangetheoperationor'functionoftheReactorRecirculationSystemandthemodificationwillmeetallthedesignrequirementsasspecifiedintheSAR.Theproposedactiondoesnotinvolveaprecursoroforcontributortoanyevaluatedaccidentsinvolvingoffsitedose.Therefore,becausethismodificationimprovesupontheexistingdesignandmeetsalltheapplicabledesignbasesandcodesasspecifiedintheSAR,theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimportanttosafetypreviouslyevaluatedintheSAR,includingthosenotedabove,'illnotbeincreased.No.ThismodificationwillnotsignificantlychangetheoriginaldesignarrangementofthesmalldrainpipinghangersSP-DCA-151-H2008/H2010oftheReactorRecirculationSystem.Theprimarychangeinvolvesanadditionalverticalsupportpointtoalterthenaturalfrequencyofeachsubject1"drainjinesandpreventthecoincidingoffrequencieswiththeVanePassingFrequencyoftheReactorrecirculationpumps.SincethemodificationwillamelioratethesupportdesignschemeofthedrainlinesandbeacceptableperalltherequirementsoftheSAR,thismodificationwillnotcreateapossibilityforan,accidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSAR..IIINo.ThismodificationdoesnotjeopardizeordegradethefunctionoroperationofanyplantsystemgovernedbytheTechnicalSpecification.NoneoftheparametersthatarethebasesfortheTechnicalSpecificationswillbeadverselyimpactedbythismodification.TheactionstakenbythismodificationtotheReactorRecirculationsmallpipehangersshallguaranteetheintegrityoftherecirculationpipingbyensuringthedrainlinepipinghasanaturalfrequencythatisoutsideofthecriticalrange120-133Hz.ThismodificationwillallowtheReactorRecirculationPipingSystemtomeetsitsdesignbasisasspecifiedintheSAR;therefore,theactionstakenbythismodificationwillnotreduceanymarginofsafetyasdefinedinthebasistoanyTechnicalSpecification.

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