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{{#Wiki_filter:REVISION501/6/95FLORIDAPOWERandLIGHTCOMPANYNUCLEARENERGYSERVICES700UniverseBoulevardJunoBeach,Florida33408SECOND'TEN-YEARINSERVICEINSPECTIONINTERVALINSERVICETESTINGPROGRAMFORPUMPSANDVALVESST,LUCIENUCLEARPOWERPLANTUNITNO.1NRCDOCKETNUMBER:DOCUMENTNUMBER:ST.LUCIEPLANTREVIEWSANDAPPROVALS:PREPAREDBY:APPROVEDBY:SPTISTENGINEERPSEST&CODESUPERVISORDATE:DATE:~9502i50077950208PDRADOCK05000335PPDR REVISION501/6/95TableofContentsTableofContentsRecordofRevisions1.01.1IntroductionISTProgramTestingRequirementGuidelines2.0ApplicableDocuments83.03.13.23.33.43~5InserviceTestingProgramForPumpsCodeComplianceAllowableRangesofTestQuantitiesTestingIntervalsPumpProgramTableReliefRequestsforPumpTesting999910104.24'4.44.54.6InserviceTestingProgramForValvesCodeComplianceTestingIntervalsStrokeTimeAcceptanceCriteriaCheckValveTestingValveProgramTableReliefRequestsForValveTesting11111111111212ABCDEPumpProgramTablesPumpProgramRequestsForReliefValveProgramTablesValveProgramRequestsForReliefColdShutdownJustifications 0 | |||
REVISION5'1/6/95RECORDOFREVISIONSREVISIONHUHBIKDESCRIPTIONOFREVISIONDATEBRZIS1Z.InitialIssueSecond10-yearProgramRevisedProgramperNRCGenericLetter89-04RevisedPrograminresponsetoNRCLetterdtdOctober17,1990RevisedProgramtoincludethelatestupdatesandtoclarifyseveralreliefrequestsRevisedPrograminresponsetoNRCLettersdtdAugust5,1994,andSeptember27,1994,andtoreviseVR-12andVR-13.3/21/858/11/8712/12/899/1/911/14/941/6/95 REVISION501/6/95INSERVICETESTING(IST)PROGRAMPLANST.LUCIEUNIT | |||
==11.0INTRODUCTION== | |||
Revision5oftheSt.LucieUnit1ASMEInserviceInspection(IST)Programwillbeineffectthroughtheendofthesecond120-month(10-year)intervalunlessrevisedandreissuedforreaso'nsotherthantheroutineupdaterequiredatthestartofthethirdintervalper10CFR50.55a(g).Thesecondinspectionintervalisdefinedasfollows:February11,1988February10,1998ThisdocumentoutlinestheISTProgramforSt.LuciePlant,Unit1,basedontherequirementsoftheASMEBoilerandPressureVesselCode(theCode),SectionXI,1983Editionthroughsummer1983Addenda.Referencesinthisdocumentto"IWP"or"IWV"correspondtoSubsectionsIWPandIWV,respectively,oftheASMESectionXI,1983Edition,unlessotherwisenoted.TheISTprogramincorporatestherequirementsofASME/ANSIOM-1987,Part1,"RequirementsforInservicePerformanceTestingofNuclearPowerPlantPressureReliefDevices"forthetestingofsafetyandreliefvalves.TheuseofASME/ANSIOM-1987,Part1requirementsasanalternativetoASMESectionXI,1983Edition,SubsectionIWV-3510requirementswasapprovedbytheNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.TheinservicetestingrequirementsidentifiedinthisPlanwerepreparedtoverifytheoperationalreadinessofpumpsandvalveswhichhaveaspecificfunctioninmitigatingtheconsequencesofanaccidentorinbringingthereactortoasafeshutdown.Inthisregard,thegeneralrequirementsofParagraphsIWP-1100andIWV-1100formthefollowingbasicscopedocumentasitappliestoISIClass1,2,and3.Specificallycomponentstobeincludedare: | |||
REVISION501/6/95Centrifugalandpositivedisplacementpumpsthatarerequiredtoperformaspecificfunctioninshuttingdownthereactororinmitigatingtheconsequencesofanaccidentandthatareprovidedwithanemergencypowersource,andValves(andtheiractuatingandpositionindicatingsystems)whicharerequiredtoperformaspecificfunctioninshuttingdownthereactortothecoldshutdownconditionorinmitigatingtheconsequencesofanaccident.ThegeneralCoderequirementswereappliedtoSt.LucieUnit1usingasystematicapproachbyfirstreviewingthefunctionofeachoftheplantsystemsastheyrelatetoalimitednumberofboundingaccidentscenarios.Thisrevieweliminatedsystems(andassociatedcomponents)thatclearlydonotfitthebasicCodedefinitionsincludingthatofISIboundaryclassification.Next,aseriesofrulesorguidelinesweredevelopedthatestablishedthecriteriatobeusedduringthereviewoftheremainingsystemsandcomponents.Theserulesestablishthepoliciesandassumptionsthatwereappliedtotheforegoinganalysistoensureconsistency.Eachoftheseareoutlinedbelow.From"thispoint,inaseriesofsteps,eachoftheindividual,componentsineachoftheremainingsignificantsafetysystems(andsupportingsystems)wereevaluatedwithrespecttothefunctionofeachcomponentandtheneedforitsoperabilityasitrelatestothescopeofSectionXI.Thesestepsincluded:Areviewofflowdiagramsofeachsystemandidentificationofanycomponents(pumpsorvalves)that"could"potentiallybeincludedintheISTProgramscope.Basedonthereviewer'sexperience,valvesusedformaintenanceisolation,vents,drains,etc.wereexcluded.Typically,allpumps,power-operatedvalves,checkvalves,andsafetyvalvesremainedinthepopulationdesignatedforfurtherevaluations2.Eachsystemwasbrokendownbycomponentand,basedongeneralsystemoperationalrequirements,anarrativedescriptionofeachcomponent'ssafetyfunction(s)duringtheproposedscenarioswasdrafted. | |||
REVISION501/6/953.Sequentially,plantdocumentsthatreferordiscusssafety-relatedcomponentorsystemfunctionswerereviewedindetailandinformationfromthesedocumentswascomparedtothedraftsdevelopedintheabovestep2.Whereappropriate,correctionsandreferenceswereappliedtotheindividualnarratives.Documentsreviewedincludedthefollowing:a~b.C.d.e.f.g.h.UpdatedFinalSafetyAnalysisReportTechnicalSpecificationsPlantSystemDescriptions(Training)DocumentsSpecialanalysesCommitmentcorrespondencePlantOperatingProceduresEmergencyOperatingProceduresAppendixJLeakrateTestProgram4.Basedonthefinalizedcomponentsafetyfunctionevaluationderivedfromthedocumentreviewandthecorrectednarratives,theISTProgramtestingrequirementswerethenestablishedbyapplyingtheguidelineslistedinSection1.1toeachone.5.Thefunctionaldescriptionofthesystemcomponentsweresubjectedtoacomprehensivereviewbyknowledgeableplantpersonneltoconfirmtheaccuracyonthedocument. | |||
REVISION501/6/951.1ISTPROGRAMTESTINGREQUIREMENTGUIDELINESThefollowingguidelinesaresetforthforevaluationofsystemcomponents(pumpsandvalves)withrespecttotheirinclusionintheSt.LucieUnit1ISTProgramandtowhatextenttestingwillbeperformed.Wheremultiplecomponentsarecapableofperformingthesameequivalentandredundantspecifiedfunction(eg.multiplevalvesclosinginseries)andwherethecomponentsarenotsuppliedbyalternateandredundantpowersupplies,onlyoneneedbeincludedintheandnotsimplyhavethecapabilityofperformance.Thisexemptiononlyapplieswherelicensingdocuments~~..takecreditforthedesignedredundancy.Componentsperformingredundantfunctionshallbeincludedinthetestingprogramif,intheprocessofanalysisorlicensingjustification,theyarereliedupontobeoperable.2.TheSt.LucieUnit1FUSARandrelateddesignbasisdocumentsshallbetheprimaryreferencesfordeterminingwhichcomponentsarerequiredtoperformspecifiedfunctionsrelatedtothespectrumofpredicatedaccidents.Althoughseveralotherplantsourcedocuments(Tech.Specs.andEOP's)identifyvariouscomponentsthatmaybeimportanttoplantsafetyoraretobeoperatedinconjunctionwithrecoveryfromanaccident,unlessspecificcreditistakenintheplantsafetyanalysis(orisimpliedintheanalysis)forapumporvalve,thecomponentneednotbeincludedintheISTprogram.TheexceptionstothisarethosecaseswheretheNRCimposestestrequirementsattheirdiscretion.3.Valvesinstalledprimarilyforthepurposeofprovidingconvenientoperationalflexibility(eg.systemcross-connects)andarenotrequiredtooperateassumingthatthedesignatedfirst-linesystemsandcomponentsoperatesatisfactorily,neednotbeincludedintheISTProgram.Thisdoesnotexcludeactivevalvesthatcouldbecalleduponasaresultofoptionalsystemlineupsexistingpriortotheinitiationofanaccident. | |||
REVISION501/6/95Valvesthatareactuatedasaresultofasafetysystemautomaticresponseshallbe'ncludedintheISTProgramtotheextentthatthetestingshallverifyvalveoperationrequiredasaresultofthesafetysysteminput.ThisappliesonlyifvalvemovementisrequiredtosupportthosefunctionsrequiredasspecifiedbytheCode.ThisrequirementextendsonlytotestingdefinedbytheCodeandisnotintendedtoimplytheneedforverifyingavalve'sresponsetoautomaticlogicsystemoutput.Valveswhosesolefunctionistoprovidesystemorcomponent'redundancyrelatedtofailureofpassivecomponentsneednotbeincludedifasetofalloftheactivecomponents(pumpsandvalves)neededtofulfillthespecifiedsystem(train)functionaretested-doubleorunrelatedsimultaneousfailuresneednotbeassumed.Insomecaseswhereprotectionofcriticalsystemsfrompassivefailuresisacommitment,thencomponentsareincludedinthetestingprogram.Systemsafety/reliefvalvesshallbeincludedwherethefunctionofthevalveistoprovideoverpressureprotection.AllvalvesincludedintheSt.LucieUnit1leakratetestingprogramcomplyingwith10CFR50,AppendixJshallbeincludedintheISTProgramasCategoryAvalves.Allvalvesdesignatedashigh-lowpressureinterfacevalves(pressureisolationvalves)shallbeincludedintheISTProgramasCategoryAvalves.AnyactiveCategoryAvalveshallbedesignatedfortesting(exercising)totheclose'ddirection.Whenavalve'snormalpositionduringoperationisitspositionrequiredtoperformitsdesignatedsafetyfunctionandvalvemovementmayberequiredduetoplantevolutionsorpossiblerepositioningduringaccidentresponseorrecoveryoperations,thenperiodicexercisingpertheCodeisrequired(ie.thevalvecannotbeconsideredpassive). | |||
REVISION501/6/95Whereanair-operatedvalveisprovidedwithasimpleair-pilotvalve,thepilotvalveneednotbespecificallyincludedintheISTProgramprovidedthatthetestingperformedonthemainvalveverifiestheproperoperationofthepilotvalve.ControlvalvesarespecificallyexcludedfromtestingperIWV-1200(a);however,ifacontrolvalvemustchangepositiontosupportasafety-relatedfunctionandithasafail-safeposition,then,itmustbeincludedintheISTProgramandtestedtotheextentpractical.Steamturbinegovernorvalvesareconsideredtobeanintegralpartoftheturbineand,assuch,arenotincludedintheISTProgram.Checkvalvesareincludedwhereavalveservesastheonlyeffectiveboundarybetweenpipingassociatedwithanecessarysafetyfunctionandnon-safetygrade(non-seismic)piping.Failureofpassivesystemcomponentsisassumedonlyfornon-safetygradesystems.Whereavalveperformsasafetyfunctioninbothdirections(openandclosed)exercisinginbothdirectionsisrequired.Forthesepower-operatedvalves,stroketimemeasurementsinbothdirectionswouldberequired.Pumpsandvalveswhoseonlysafetyfunctionispredicatedonplantshutdownandrecoveryfromafirepercommitmentmadeasaresulton10CFR50,AppendixRarenotincludedintheISTProgram.PumpsandvalvesthatarenotcategorizedasISIClass1,2,or3neednotbeincludedintheISTProgram.CheckvalvesthathaveiasafetyfunctiontocloseshouldbeevaluatedwithrespecttocategorizationasCategoryA/CversusCwithrespecttothefollowingissues:Whethertheflowrequirementsforconnectedsystemscanbeachievedwiththemaximumpossibleleakagethroughthecheckvalve.Theeffectontheperformanceofothercomponentsandsystemsduetothereducedflowresultingfromtheleakage. | |||
REVISION501/6/95Theconsequencesoflossoffluidfromthesystem.Theeffectthatbackflowthroughavalvemayhaveonpipingandcomponents,suchas-theeffectofhightemperatureandthermalstresses.Theradiologicalexposuretoplantpersonnelandthepubliccausedbytheleak. | |||
REVISION501/6/952.0APPLICABLEDOCUMENTSThisProgramPlanwasdevelopedpertherequirementsandguidanceprovidedbythefollowingdocuments:2.12.22.32.42.52.62.72.82.92.102.112'22.132.142.152.162.172.182.192.20Title10,CodeofFederalRegulations,Part50NRCRegulatoryGuides-Division1StandardReviewPlan3.9.6,"InserviceTestingofPumpsandValvesFinalSafetyAnalysisReport,St.LucieUnit1St.LuciePlantUnit1TechnicalSpecification.ASMEBoilerandPressureVesselCode,SectionXI,1983EditionandAddendathroughSummer,1983.NRCGenericLetter89-04,"GuidanceonDevelopingAcceptableInserviceTestingPrograms"MinutesofthePublicMeetingsonGenericLetter89-04St.LucieUnit1-InterimReliefFromtheInserviceTestingProgramforPumpsandValvesSupplementtoMinutesofthePublicMeetingsonGenericLetter89-04byJ.G.Partlow,26September1991RequestforIndustry/NRC-AcceptedInterpretationon"Practical"asAppliedbyASMECodeSectionXI,IWV-3412(a)byMartinJ.Virgilio,AssistantDirectorforRegionsIVandV.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.ASMEBoilerandPressureVesselCode,SectionXI,1989Edition.ASME/ANSIOM-1987,Part1,"RequirementsforInservicePerformanceTestingofNuclearPowerPlantPressureReliefDevices".NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary29,1993.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.ASME/ANSIOM-1987,Part6,"InserviceTestingofPumpsinLight-WaterReactorPowerPlants".ASME/ANSIOM-1987,Part10,'InserviceTestingofValvesinLight-WaterReactorPowerPlants".NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedAugust12,1994.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.8 REVISION501/6/953.0INSERVICETESTINGPROGRAMFORPUMPS3.1CodeComplianceThisISTProgramforpumpsmeetstherequirementsofSubsectionIWPoftheCodeandanyinterpretationsoradditionalrequirementsimposedbyGenericLetter89-04.Wheretheserequirementshavebeendeterminedtobeimpractical,conformancewouldcauseunreasonablehardshipwithoutanycompensatingincreaseinsafety,oranalternativetestprovidesanacceptablelevelofqualityandsafety,relieffromCoderequirementsisrequestedpursuanttotherequirementsof10CFR50.55a(g)(iii)andGenericLetter89-04.3.2AllowableRangesofTestQuantitiesTheallowablerangesfortestparametersasspecifiedinTableIWP-3100-2willbeusedforallmeasurementsofpressure,flow,andvibrationexceptasprovidedforinspecificreliefrequests.InsomecasestheperformanceofapumpmaybeadequatetofulfillitssafetyfunctioneventhoughtheremaybeavalueofanoperatingparameterthatfallsoutsidetheallowablerangesassetforthinTableIWP-3100-2.Shouldsuchasituationarise,anexpandedallowablemaybedetermined,onacase-by-casebasis,inaccordancewithIWP-3210andASMECodeInterpretationXI 79-19.3.3TestingIntervalsThetestfrequencyforpumpsincludedintheProgramwillbeassetforthinIWP-3400andrelatedreliefrequests.Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit1TechnicalSpecificationstoprovideforoperationalflexibility. | |||
REVISION501/6/953.4PumpProgramTableAppendixAliststhosepumpsincludedintheISTProgramwithreferencestoparameterstobemeasuredandapplicablerequestsforrelief.3.5ReliefRequestsforPumpTestingAppendixBincludesallreliefrequestsrelatedtopumptesting.10 REVISION501/6/954.0INSERVICETESTINGPROGRAMFORVALVES4.1CodeComplianceThisISTProgramforvalvesmeetstherequirementsofSubsectionIWVoftheCodeandanyinterpretationsoradditionalrequirementsimposedbyGenericLetter89-04.Wheretheserequirementshavebeendeterminedtobeimpractical,conformancewouldcauseunreasonablehardshipwithoutanycompensatingincreaseinsafety,oranalternativetestprovidesanacceptablelevelofqualityandsafety,relieffromCoderequirementsisrequestedpursuanttotherequirementsof10CFR50.55a(g)(iii)andGenericLetter89-04.4.2TestingIntervalsThetestfrequencyforvalvesincludedintheProgramwillbeassetforthinIWV3400andrelatedreliefrequests.Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit1TechnicalSpecificationstoprovideforoperationalflexibility.Wherequarterlytestingofvalvesisimpractical,orotherwiseundesirable,testingmaybeperformedduringcoldshutdownperiodsaspermittedbyIWV-3412(a).JustificationsforthisdeferredtestingareprovidedinAppendixE.4.3StrokeTimeAcceptanceCriteriaWhenrequired,theacceptancecriteriaforthestroketimesofpower-operatedvalveswillbeassetforthinGenericLetter89-04.4.4CheckValveTestingFull-strokeexercisingofcheckvalvestotheopenpositionusingsystemflowrequiresthatatestbeperformedwherebythepredictedfullaccidentconditionflowratethroughthevalvebeverified,andmeasured,.AnydeviationtothisrequirementmustsatisfytherequirementsofGenericLetter89-.04,Positionl.11 REVISION501/6/954.5ValveProgramTableAppendixCliststhosevalvesincludedintheISTProgramwithreferencestorequiredtesting,respectivetestintervals,andapplicablerequestsforrelief.4.6ReliefRequestsforValveTestingAppendixDincludesallreliefrequestsrelatedtovalvetesting.12 AppendixAPumpProgramTables | |||
FloridaPower&LightCompanyINSERVICETESTING-PUMPTABLESSt.LucieNuclearPlant-Unit1REVISION'DATE1/6/95PAGE:2PUMPNUMBERNumericaldesignatorindicatedontherespectiveflowdiagram.DESCRIPTIONGenericname/functionofthepump.CLISIClassificationpertheassociatedISIboundarydrawing(s)COORDCorrespondstotheflowdiagramcoordinatesofthepump.TestParametersThetableindicatesbya"Y"(yes)or"N"(no)thatthespecificparameterismeasured,evaluated,andrecordedpertheapplicableCoderequirement.Ifa"N"isindicated,theassociatedreliefrequestnumberisalsonotedinthesamecolumn.PR-XXWhereindicatedthisreferstothespecificreliefrequest(SeeAppendixB)relatedtoanydeviationregardingthemeasurementoranalysisofaparameter. | |||
AppendixBPumpProgramReliefRequests RELIEFREQUESTNO.PR-1REVISION51/6/95AllpumpsintheProgramThetemperatureofallcentrifugalpumpbearingsoutsidethemainflowpathandofthemainshaftbearingsofreciprocatingpumpsshallbemeasuredatpointsselectedtoberesponsivetochangesinthetemperatureofthebearings.(IWP-3300,4310)Thedataassociatedwithbearingtemperaturestakenatone-yearintervalsprovideslittlestatisticalbasisfordeterminingtheincrementaldegradationofabearingoranymeaningfultrendinginformationorcorrelation.Inmanycasesthepumpbearingsarewater-cooledandthus,bear'ingtemperatureisafunctionofthetemperatureofthecoolingmedium,whichcanvaryconsiderably.Vibrationmeasurementsareasignificantlymorereliableindicationofpumpbearingdegradationthanaretemperaturemeasurements.Allpumpsintheprogramaresubjectedto'ibrationmeasurementsinaccordancewithIWP-4500.Althoughexcessivebearingtemperatureisanindicationofanimminentorexistingbearingfailure,itishighlyunlikelythatsuchaconditionwouldgounnoticedduringroutinesurveillancetestingsinceitwouldmanifestitselfinotherobviousindicationssuchasaudiblenoise,unusualvibration,increasedmotorcurrent,etc.Anypotentialgainfromtakingbearingmeasurements,whichinmostcaseswouldbedonelocallyusingportableinstrumentation,cannotoffsetthecostintermsofdilutionofoperatoreffort,distractionofoperatorsfromotherprimaryduties,excessiveoperatingperiodsforstandbypumpsespeciallyunderminimumflowconditions,andunnecessarypersonnelradiationexposure.Basedonthereasonssimilartothosesetforthabove,theASMEdeletedtherequirementforbearingtemperaturemeasurementsinASMEOMCode,SubsectionISTB,therevisedversionoftheCodeforpumptesting.B-1 RELIEFREQUESTNO.PR-1(cont.)REVISION51/6/95NoneThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary1,1993.B-2 RELIEFREQUESTNO.PR-2REVISION51/6/95VariousThefull-scalerangeofeachinstrumentshallbethreetimesthereferencevalueorless.(IWP-4120)TableIWP-4110-1requirestheaccuracyofinstrumentsusedtomeasurespeedtobeequaltoor.betterthan+2percentforspeed,basedonthefullscalereadingoftheinstrument.Thismeansthattheaccuracyofthemeasurementcanvaryasmuchas+6percent,assumingtherangeoftheinstrumentsextendedtotheallowedmaximum.TheseISTpumpparametersareoftenmeasuredwithportabletestinstrumentswherecommerciallyavailableinstrumentsdonotnecessarilyconformtotheCoderequirementsforrange.Inthesecases,highqualitycalibratedinstrumentswillbeusedwherethe"reading"accuracyisatleastequaltotheCode-requirementforfull-scaleaccuracy.ThiswillensurethatthemeasurementsarealwaysmoreaccuratethantheaccuracyasdeterminedbycombiningtherequirementsofTableIWP-4110-1andParagraphIWP-4120.Wheneverportableinstrumentsareusedformeasuringpumpspeed,theinstrumentswillbesuchthatthe"reading"accuracyis+2percent.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.B-3 RELIEFREQUESTNO.PR-3REVISION51/6/95WITHDRAWNbyRevisionf4B-4 RELIEFREQUESTNO.PR-4REVISION51/6/95AuxiliaryFeedwater(AFW)Pumps1Athru1C(8770G080'h3)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1)ThereareonlytwopracticalflowpathsavailableforperforminginservicetestingoftheAFWPumps.Theseincludetheprimaryflowpathintothemainfeedsupplylinesandthencetothesteamgeneratorandtheminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstothecondensatestoragetank.Theformerisprovidedwithflowratemeasuringinstrumentationhoweverthemini-recirclineisafixedresistancecircuitwithnoflowinstrumentation.Pumpingfromtheauxiliaryfeedwatersystemintothesteamgeneratorsduringplanthotoperationisimpracticalandundesirableforthefollowingreasons:Duringauxiliaryfeedwaterinjectionviathemainfeedwaterlineswhiletheplantisoperatingatpower,alargetemperaturedifferential(approximately375deg-F)couldexistthatwouldresultinsignificantthermalshock'andfatiguecyclingofthefeedwaterpipingandsteamgeneratornozzles~Basedontheexpecteddurationofthetestingandtheflowrateofthepumps(150-200gpm),itisexpectedthatthecooldownofthesteamgeneratorwouldinducecooldownandcontractionofthereactorcoolantsystemresultinginundesirablereactivityvariationsandpowerfluctuations.B-5 RELIEFREQUESTNO.PR-4(cont.)REVISION51/6/95DuringquarterlytestingoftheAFWpumpswhilethepumpsareoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbeme'asuredandevaluatedperIWP-3200andIWP-6000.Duringtestingperformedatcoldshutdown,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.Testingduringcoldshutdownswillbeonafrequencydeterminedbyintervalsbetweenshutdowns'asfollows:Forintervalsof3monthsorlonger-eachshutdown.Forintervalsoflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.ThisalternatetestingagreeswiththerequirementsofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal.B-6 RELIEFREQUESTNO.PR-5REVISION51/6/95BoricAcidMakeup(BAM)Pumps1Aand1B(8770-G-078,Sh121)Eachinservicetestshallincludethe'measurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest(TableIWP-3100-1)TherearethreepracticalflowpathsavailableforperforminginservicetestingoftheBAMPumps.Theseincludetheprimaryflowpathintothechargingpumpsuctionheader,arecirculationlineleadingbacktotherefuelingwatertank,andtheminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstotheBAMTanks.Noneoftheseflowpathsistotallysatisfactoryforthefollowingreasons:*OperatingtheBAMPumpsdischargingintothechargingpumpsuctionheaderrequirestheintroduction-ofhighlyconcentratedboricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ThiswouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.Alargeenoughboronadditionwouldresultinanunscheduledplanttripandapossibleinitiationof-SafetyInjectionSystems.*Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-borationoftheRCS.ThewastemanagementsystemwouldbeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireprocessingtodecreaseitsboronconcentration.B-7 RELIEFREQUESTNO.PR-5(cont.)REVISION51/6/95ThesecondcircuitrecirculateswatertotheRefuelingWaterTank(RWT)ortheVolumeControlTank(VCT).DuringnormalplantoperationatpoweritisundesirabletopumptotheRWTanddepletetheBAMTankinventory.OneofthetwoBAMTanksismaintainedatTech.Spec.levelwhiletheotherisusedasrequiredforplantoperation.TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintainedatalevelnearthetopofthetank.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatabilitywouldbequestionable.Theminimum-flowrecirculationflowpathisafixedresistancecircuitofoneinchpipecontainingaflowlimitingor'ifice.Noflowratemeasuringinstrumentationisinstalledinthisline.Pumpingboricacid.fromtanktotankwouldbepossiblebuttheflowrateswouldbesmall,limitingpumpoperationtothehighheadsectionofthepumpcurve.Inaddition,oneofthetwoBAMTanksismaintainedatTech.Spec.levelwhiletheotherisusedasrequiredfornormalplantoperation.TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintainedatalevelnearthetopofthetank.Thisnarrowbandlimitstheamountthatcanbepumpedtoitorfromittoonlyafewhundredgallons.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatabilitywouldbequestionable.B-8 RELIEFREQUESTNO.PR-5(cont.)REVISION51/6/95DuringquarterlytestingoftheBAMpumps,whilethepumps.areoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbemeasuredandevaluatedperIWP-3200andIWP-6000.Duringtestingperformedateachreactorrefuelingoutage,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9andwasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.B-9 RELIEFREQUESTNO.PR-6REVISION51/6/95ContainmentSpray(CS)Pumps1Aand1B(8770-G-088)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest.(TableIWP-'3100-1)TherearetwopracticalflowpathsavailableforperforminginservicetestingoftheCSPumps.TheseincludeonethatpumpsboratedwaterfromtheRWTtotheRCSviathelow-pressureinjectionheader.Theotherisminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstotheRWTThefirstwouldrequiremodifyingtheshutdowncoolinglineupwhileincoldshutdown;however,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.Thus,theonlypracticaltimefortestingthesepumpsviathisflowpathisduringrefuelingoutageswhenwaterfromtheRWTisusedtofilltherefuelingcavity.Theminimum-flowrecirculationflowpathisafixedresistancecircuitcontainingaflowlimitingorificewithnoflowratemeasuringinstrumentationinstalled.DuringquarterlytestingoftheCSpumpswhilethepumpsareoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbemeasuredandevaluatedperIWP-3200andIWP-6000. | |||
RELIEFREQUESTNO.PR-6(cont.)REVISION51/6/95Duringtestingperformedduringeachreactorrefueling,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththerequirementsofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal. | |||
RELIEFREQUESTNO.PR-7REVISION51/6/95WITHDRAWNbyRevision$4B-12 RELIEFREQUESTNO.PR-8REVISION51/6/95BoricAcidMakeupPumpslAand'1B(8770-G-078,Sh121EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTable-IWP-3100-1exceptbearingtemperatures,whichshallbemeasuredduringatleastoneinservicetesteachyear.(IWP-3300)Thesysteminstallationsdonotprovideanymechanismfor'directlymeasuringpumpsuctionpressuresbyusingasuctiongage.Ameasureofpumpsuctionpressurecan,however,bedeterminedbycalculationusingtheheightofliquidintheboricacidtanks(BAMtanks).Sincethereisessentiallyafixedresistancesbetweenthetanksandthepumpsthiswillprovideaconsistentvalueforsuctionpressures.TheBAMtanklevelsarenotexpectedtovaryduringtheBAMpumptests.TheBAMpumpdischargeisdirectedbacktoitsstoragetankusingthemini-flowrecirculationlines.What.boricacidistakenoutthroughthesuctionlineisimmediatelyreplacedthroughthemini-flowrecirculationlinedischargeintothesameBAMtank.Thetanklevelsandassociatedcalculationswillonlybetakenonceduringeach-testinsteadofpriortopumpoperationandduringoperationasrequiredbyTableWP-3100-1.TheBoricAcidMakeupPumpsuctionpressureswillbecalculatedbasedontheheightofliquidintheassociatedtankonceduringeachinservicetest.Subsequently,thesecalculatedvalueswillbeusedtodeterminepumpdifferentialpressuresforevaluationofpumpparameters.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992. | |||
RELIEFREQUESTNO.PR-9REVISION51/6/95HighPressureSafetyInjection(HPSI)Pumps1Aand1B.(8770-G-078,Sh130)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)DuringquarterlytestingoftheHPSIPumps,thepumpscannotdevelopsufficientdischargepressuretoovercomeRCSpressureandallowflowthroughthesafetyinjectionlineflowmeasuringinstruments.FlowisroutedthroughaminimumflowtestlineleadingtotheRWT.Thislinehasnoinstalledflowratemeasuringinstrumentation.andmeasuringflowrateduringquarterlytestingisnotpractical.Duringcoldshutdownconditions,fullflowoperationoftheHPSIpumpstotheRCSisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.NRCGenericLetter89-04,Position9,allowseliminationofminimumflowtestlineflowratemeasurementsprovidinginservicetestsareperformedduringcoldshutdownsorrefuelingunderfullorsubstantialflowconditionswherepumpflowrateisrecordedandevaluated.B-14 REVISION51/6/95RELIEFREQUESTNO.PR-9(cont.)DuringquarterlytestingoftheHPSIPumps,pumpdifferentialpressureandvibrationwillberecordedperIWP-3200andIWP-6000.Duringtestingperformedateachreactorrefueling,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal'-15 RELIEFREQUESTNO.PR-10REVISION51/6/95LowPressureSafetyInjection(LPSI)PumpslAand1B(8770-G-078,Sh130)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)DuringquarterlytestingoftheLPSIPumps,thepumpscannotdevelopsufficientdischargepressuretoovercomeRCSprcssure'lowisroutedthroughaminimumflowtestlineleadingtotheRWT.Thislinehasnoinstalledflowratemeasuringinstrumentationandmeasuringflowrateduringquarterlytestingisnotpractical.NRCGenericLetter89-04,Position9,allowseliminationofminimumflowtestlineflowratemeasurementsprovidinginservicetestsareperformedduringcoldshutdownsorrefuelingunderfullorsubstantialflowconditionswherepumpflowrateisrecordedandevaluated.DuringquarterlytestingoftheLPSIPumps,pumpdifferentialpressureandvibrationwillberecordedperIWP-3200andIWP-6000~B-16 RELIEFREQUESTNOPR-10(cont.)REVISION51/6/95Duringtestingperformedatcoldshutdown,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.Testingduringcoldshutdownswillbeonafrequencydeterminedbyintervalsbetweenshutdownsasfollows:Forintervalsof3monthsorlonger-eachshutdown.Forintervalsoflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal.B-17 RELIEFREQUESTNO.PR-11REVISION51/6/95IntakeCoolingWaterPumps1A,1Band1CEachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpinletpressureshallbemeasuredbeforestartingapumpandduringthetest.(TableIWP-3100-1)Thepumpslistedaboveareverticallineshaftpumpssubmergedintheintakestructurewithnopracticalmeansofmeasuringtheinletpressureofthepump.Theinletpressure,however,canbedeterminedbycalculationusing,asinput,themeasuredheightofwaterabovethepump'sinletasmeasuredattheintakestructure.Duringeachinservicetest,thewaterlevelintheintakepitremainsrelativelyconstant,thusonlyonemeasurementoflevelandtheassociatedsuctionpressurecalculationneedbeperformed.Duringtestingofthesepumps,onevalueofinletpressurewillbecalculatedbasedupontheintakewaterlevelattheintakestructure.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992. | |||
RELIEFREQUESTNO.PR-12REVISION51/6/95ReactorCoolantChargingPumps1A,1B,and1CThefrequencyresponserangeofthereadoutsystem(forinstrumentusedtomeasurevibrationamplitude)shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotationalspeed.,(IWP-4520(b))Thereactorcoolantchargingpumpsoperateatapproximately210-215rpmwhichequatestoarotationalfrequencyof3.50Hz.Theone-halfminimumspeedfrequencyresponserequiredforthevibrationinstrumentationcorrelatesto1.75Hz(105cpm).ThevibrationinstrumentationpresentlyinuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integratorfrequencyresponseisessentiallyflatdownto120cpm(cyclesperminute)wherethedisplayedoutputoftheinstrumentslightlyincreasestoapproximately+1dBat100cpm.The-3dBfrequencyresponseisreachedatapproximately54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequencyprobenominallyrateddownto270cpm(-3dB).Thisisonlyslightlyhigherthantheexpectedrotational(1X)speedofthechargingpump(205210cpm).The1X(205cpm.)vibrationfrequencycomponentswillbesomewhatattenuatedbytheprobes,butnotcutoff.Overallvibrationlevelswouldstillshowanincreasingvalue,ifsomeproblemdevelopedwhosecharacteristicfrequencywas1Xrunningspeed.Therearevirtuallynomechanicaldegradationswhereonlyasub-synchronousvibrationcomponentwoulddeveloponthechargingpumps.Forexample:a.Oilwhirl(0.38X-0.48X)isnotapplicabletoahorizontal,triplex,reciprocatingpump.b.Alightrub/impactcouldgenerate0.5X(102.5cpm)vibrationcomponents,butwouldalsousuallygenerateasequenceofintegerandhalfintegerrunningspeedcomponents.Aheavyrubgeneratesincreasedintegervaluesofmultiplerunningspeedcomponents,as REVISION51/6/95wellasprecessingthe1Xphasemeasurement.Ineithercasetheoverallvibrationlevelwouldstillshowanincreasefromboththeattenuatedsub-synchronousand1Xvibrationcomponentsaswellasthehigherharmonicvibrationcomponents.c.Loosenessinthepowertrainwouldlikelybeindicatedbyincreasing1Xand2Xvibrationcomponents.Thesesignalswouldbeslightlyattenuatedbutagainnotcomplete'lycutoff.Basedontheaboveinformation,itisourevaluationthatthepresentuseoftheBentlyNevada270cpmprobeswiththeportableTK-81instrumentiscapableofcollectingsufficientlyreliabledatatoidentifychangesfrombaselinereadingstoindicatepossibleproblemswiththepumps.Duringtestingofthesepumps,thevibrationinstrumentationusedwillbetheBentlyNevadamodelTK-81with270cpmprobesorequivalent.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedAugust5,1994.B-20 REVISION51/6/95RELIEFREQUESTNO.PR-13WITHDRAWNbyRevision$4B-21 AppendixCValveProgramTables FloridaPower&LightCompanyREVISION:5INSERVICETESTING-VALVETABLESDATE1/6/95St.LucieNuclearPlant-Unit1PAGE:1&ZilHK,VALVENUMBERTheplantalpha-numericaldesignatorforthesubjectvalveCOORDCLCATSIZETYPEA/PACT.TYPENORMPOS.REMINDFAILMODEThecoordinatelocationofthevalveonthedesignateddrawingTheISIClassificationofthevalveaspertherespectiveISIboundarydrawingsThevalvecategoryperParagraphIWV-2200Thevalve'snominalsizeininchesThevalvetypeTheactive(A)orpassive(P)determinationforthevalveperIWV-2100.Thevalveactuatortypeasfollows:Air-operatedDiaphragm-operatedElectricmotor-operatedManualvalvePiston-operatedSelf-actuatedSolenoid-operatedDesignatesthenormalpositionofthevalveduringplantoperationatpowerNotesifavalvehasremotepositionindicationIdentifiesthefailuremode(openorclosed)foravalve.FAIindicatesthevalvefails"asis". | |||
FloridaPower&LightCompanyINSERVICETESTING-VALVETABLESSt.LucieNuclearPlant-Unit1REVISION:5DATE1/6/95PAGE:2Identifiesthetestrequi'rementsforavalveasfollows:CV/cCV/0CV/POECEEEOFSINSPPECPISLT-1SLT;2SRVCheckvalveexercisetoclosedpositionsCheckvalvefull-strokeexercisetoopenposition.Checkvalvepartial-strokeexercisetoopenposition.Exercisetoclosedposition.ForallcategoryAorBpower-operatedvalvesstroketimeswillbemeasuredunlessexcludedbyanassociatedreliefrequest.Exercisevalvetoverifyproperoperationandstrokingwithnostroketimemeasurements.Requiresobservationofsystemparametersorlocalobservationofvalveoperation.Exercisetoopenposition.ForallcategoryAorBpower-operatedvalvesstroketimeswillbemeasuredunlessexcludedbyanassociatedreliefrequest.FailsafetestDisassemblyandinspectionofcheckvalvesPartialclosureexerciseforpower-operatedvalvesPositionindicationverificationSeatleakratetestper'10CFR50,AppJSeatleakratetestforpressureisolationvalves.Setpointcheckforsafety/reliefvalves FloridaPower&LightCompanyINSERVICETESTING-VALVETABLESSt~LucieNuclearPlant-Unit1REVISION:5DATE1/6/95PAGE:3TESTFREQTherequiredtestintervalasfollows:QRCS2YRFSASPQuarterly(duringplantoperation)ColdshutdownasdefinedbyTechnicalSpecificationEvery2yearsEachreactorrefuelingoutage(cycle).Inthecasewherethisisdesignatedforsafety/reliefvalvesrefer,toTableWV-3510-1.Semi-annuallyOther(SeeapplicableRequestforRelief)RELIEFREQReferstothespecificreliefrequestassociatedwiththead)acenttestrequirement.(SeeAppendixD) | |||
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit1REVISION:5DATE:I/6/95PAGE:32PIID:8770-G-088SYSTEM:CONTAINMENTSPRAYSYSTEHACT.NORMREHFAILTESTRELIEFVALVENUMBERCOORD.CICAT.SIZETYPEA/PTYPEPOS.INDMODEEXAMFREQREQ.REMARKSFCV-07-1AG-122B12.000GATEADOCYESFOEOQRFSQRPI2YFCV-07-1BH-122B12.000GATEADOCYESFOEOQRFSQRPI2YLCV-07-11AJ-112A2.000GLOBEADOCYESFCECFSPISLT-1QRQR2Y2YVR-5LCV-07-11BJ-122A2~000GLOBEADOCYESFCECFSPISLT-1QRQR2Y2YVR-5MV-07-1AE-32B24.000BUTFLYAHO0YESFAIECPIQR2YMV-07-1BE-22B24.000BUTFLYAMO0YESFAIECPIQR2YMV-07-2AK-122B24.000BUTFLYAMOCYESFAIEOPIQR2YMV-07-2BK-122B24.000BUTFLYAMOCYESFAIEOPIQR2YMV-07-3AG-132B12.000GATEAMOLOYESFAIECPIQR2YMV-07-3BH-132B12.000GATE.AHOLOYESFAIECPIQR2YSE-07-1AN-42B2.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-07-1BN-52B2~000GLOBEASOCYESFCECEOFSPIQRQRQR2Y | |||
AppendixDValveProgramRequestsforRelief RELIEFREQUESTNO.VR-1REVISION51/06/95BXSZ~VariousAnyvalvestestedduringcoldshutdownconditions.VariousVariousValvesshallbeexercised...unlesssuchoperationisnotpracticalduringplantoperation.Ifonlylimitedoperationispracticalduringplantoperation,thevalveshallbepart-strokeexercisedduringplantoperationandfullstrokeexercisedduringcoldshutdowns.Fullstrokeexercisingduringcoldshutdownsforallvalvesnotfull-strokeexercisedduringplantoperationshallbeonafrequencydeterminedbytheintervalsbetweenshutdownsasfollows:Forintervalsof3monthsorlonger-exerciseduringeachshutdown.(IWV-3412,IWV-4315andIWV-3522)Inmanyinstancestestingofallvalvesdesignatedfortestingduringcoldshutdowncannotbecompletedduetothebrevityofanoutageorthelackofplantconditionsneededfortestingspecificvalves.IthasbeenthepolicyoftheNRCthatiftestingcommencesinareasonabletimeandreasonableeffortsaremadetotestallvalves,thenoutageextensionorsignificantchangesinplantconditionsarenotrequiredwhentheonlyreasonistoprovidetheopportunityforcompletionofvalvetesting.ASME/ANSIOM-1987,OperationandMaintenanceOfNuclearPowerPlants,Part10(Paragraphs4.2.1.2and4.3.2.2)recognizesthisissueandallowsdeferredtestingassetforthbelow.D-1 REVISION51/06/95Forthosevalvesdesignatedtobeexercisedortestedduringcoldshutdown,exercisingshallcommenceassoonaspracticalaftertheplantreachesastablecoldshutdownconditionasdefinedbytheapplicableTechnicalSpecificationbutnolaterthan48hoursafterreachingcoldshutdown.Ifanoutageissufficientlylongenoughtoprovidefortestingofallvalvesrequiredtobetestedduringthecoldshutdownperiod,thenthe48-hourrequirementneednotapplyifallvalvesaretestedduringtheoutage.Valvetestingneednotbeperformedmoreoftenthanonceeverythree(3)monthsexceptasprovidedforinIWV-3417(a).Completionofallvalvetestingduringacoldshutdownoutageisnotrequiredifthelengthoftheshutdownperiodisinsufficienttocompletealltesting.Testingnotcompletedpriortostartupmayberescheduledforthenextshutdowninasequencesuchthatthetestscheduledoesnotomitnorfavorcertainvalvesorgroupsofvalves.Forthepurposeofthisrequirement,theterm'coldshutdown'eferstotherespectiveconditionasnotedintheTechnicalSpecifications.Theprogramtablesidentifythosevalvestowhichcoldshutdowntestingapplies.RefertoAppendixEfordiscussionofthereasonsandjustificationforallowingcoldshutdownvs.quarterlytesting.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramRelief-RequestsdatedFebruary26,1992.D-2 SYGZEH'ELIEFREQUESTNO.VR-2REVISION51/06/95SafetyInjection/ResidualHeatRemoval(8770-G-078,Sh131)V-3113V-3114V-312'3V-3124V-3133V-3134V-3143V-3144V-3215V-3217V-3225V-3227V-3235V-3237V-3245V-3247A/C(CheckValves)Thesecheckvalvesopentoprovideforhigh-pressureandlow-pressuresafetyinjectiontotheRCS.Eachofthesevalvesisdesignatedasapressureisolationvalve(PIV)andprovidesisolationofsafeguardsystemsfromtheRCS.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Leaktestingofthesevalvesisprimarilyforthepurposeofconfirmingtheircapabilityofpreventingover-pressurizationandcatastrophicfailureofthesafetyinjectionpipingandcomponents.Inthisregard,specialleakageacceptancecriteriahasbeenestablishedandincludedintheSt.Lucie1TechnicalSpecifications(Table3.4.6-1)thataddressesthequestionofvalveintegrityinamoreappropriatemannerforthesevalves.SatisfyingboththeTechnicalSpecificationandtheCodeacceptancecriteriaisnotwarrantedandimplementationwouldbedifficultandconfusing.D-3 | |||
RELIEFREQUESTNO.VR-2(cont.)REVISION51/06/95TheleakagerateacceptancecriteriaforthesevalveswillbeestablishedpertheSt.LucieUnit1TechnicalSpecifications,Table3.4.6-1.Leakagerateslessthan1.0gpmareacceptable.2.Leakageratesgreaterthan1.0gpmbutlessthanorequalto5.0gpmareacceptableifthelatestmeasuredratehasnotexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.3.Leakageratesgreaterthan1.0gpm,butlessthanorequalto5.0gpm,areunacceptableifthelatestmeasuredrateexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.4.Leakageratesgreaterthan5.0gpmareunacceptable.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit'InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-4 RELIEFREQUESTNO.VR-3REVISION51/06/95VariousVariousVariousThisisagenericrequestforreliefIf,forpower-operatedvalves,anincreaseinstroketimeof50%ormoreforvalveswithfull-stroketimeslessthanorequalto10secondsisobserved,thetestfrequencyshallbeincreasedtoonceeachmonthuntilcorrectiveactionistaken,atwhichtimetheoriginaltestfrequencyshallberesumed(IWV-3417(a))Thestroketimemeasurementstakenduringtestingoffast-actingvalves(thoselessthan2seconds)aresubjecttoconsiderablevariationduetoconditionsunrelatedtothematerialconditionofthevalve(eg.testconditions,operatorreactiontime).InaccordancewithReference2.7,Position6,analternatemethodofevaluatingstroketimesi.sconsideredacceptable.D-5 REVISION51/06/95RELIEFREQUESTNO.VR-3(cont.)Thestroketimeevaluationforthosevalvesdesignatedintheinthetestingproceduresas"fast-acting"willnotaccountforsuccessiveincreasesofmeasuredstroketimeperIWV-3417(a)withthechangeintestfrequencyasrequired.Inlieuofthis,theassignedmaximumlimitingvalueofstroketimewillbeestablishedat2seconds.Uponexceedingthe2-secondlimit,avalvewillbedeclaredinoperableandcorrectiveactiontakeninaccordancewithIWV-3417(b).ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position6and,assuch,isconsideredtobeapproveduponsubmittal.D-6 RELIEFREQUESTNO.VR-4REVISION51/06/95WITHDRAWNbyRevisiong3D-7 RELIEFREQUESTNO.VR-5REVISION51/06/95PrimaryContainmentContainmentIsolationValvesperTableVR 1AorA/CThesevalvesareclosedtoprovidecontainmentisolation.CategoryAvalvesshallbeseatleaktestedandamaximumpermissibleleakagerateshallbespecified.IndividualvalveleakageratesshallbeevaluatedperIWV-3426andIWV-3427.(IWV-3426,IWV-3427,NRCGenericLetter89-04)Individualleakageratetestsareimpracticalin14casesduetotheconfigurationofthesystempipingandcomponents.Inthese14cases,theleakageratetestsmustbeperformedwiththetestvolumelocatedbetweenthetwovalveswhilethecombinedleakagerateismeasured.Ineachofthe14valvepairs(seeTableVR 1below),thetwovalvesareequalinsizeandtype,andtheleakagelimitisinproportiontotheirsize.Theleakagelimitsarecontrolledbyprocedureandareconservativesuchthatexcessiveleakagethroughanyindividualvalve,eventhesmallest,wouldbedetectedandtheappropriatecorrectiveactiontaken.AtSt.Lucie,thevalveleakrateacceptancecriteriaforcontainmentisolationvalvesisdeterminedbyapplyingafractionoftheaggregateallowableleakratetoeachvalvebasedontheratioofitsnominaldiametertothesumofthediametersofallcontainmentisolationvalvestestedintheProgram.Inthoseinstanceswhereseveralvalvesaretestedasagroup,thevalves'ndividualdiametersaresummedtoarriveatan"effective"sizeforthepenetrationandthat REVISION51/06/95RELIEFREQUESTNO.VR-5(cont.)numberisusedintheratiotothetotalforallvalvestoarriveatanacceptancecriteriaforthe"test."Inthosecaseswhereindividualvalvestestingisimpractical,valveswillbeleaktestedsimultaneouslyinmultiplevalvearrangementsandamaximumpermissibleleakageratewillbeappliedtoeachcombinationofvalves.TestresultsfromtestsofmultiplevalveswillbeevaluatedinaccordancewithIWV-3426andIWV-3427.810112324V-18794andV-18796FCV-25-4andFCV-25-5FCV-25-2andFCV-25-3HCV-14-1andHCV-14-7HCV-14-2andHCV-14-64142464752dV-3463andV-07009LCV-07-11AandLCV-07-11BV-07206andV-07189V-07170andV-07188V-00140andV-0014352e565758V-00139andV-00144V-25011andV-25-12V-25013andV-25-14V-25015andV-25-16ThisreliefrequestisapprovedbyNRCSafety,EvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-9 RELIEFREQUESTNO.VR-6REVISION51/06/95SXSZRL'hemicalandVolumeControl(8770-G-078Sh121)V-2177V-2190V-2191V-2177openstoprovideaflowpathforemergencyborationfromtheboricacidmakeuppumpstothesuctionofthechargingpumps.Likewise,V-2190openstoprovideaflowpathforemergencyborationviagravitydrainfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ValveV-2191openstoprovideaflowpathfromtherefuelingwatertank(RWT)tothesuctionofthechargingpumpsasanalternatesupplyofboratedwaterforboration.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Testingthesevalvesintheopendirectionrequirestheintroductionofhighlyconcentratedboricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.AlargeenoughboronadditioncouldresultinanunscheduledplanttripandapossibleinitiationoftheSafetyInjectionSystems. | |||
RELIEFREQUESTNO.VR-6(cont.)REVISION51/06/95Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-borationoftheRCS.ThewastemanagementsystemwouldalsobeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireprocessingtodecreasetheboronconcentration.Sincetheboronconcentrationisnormallyincreasedtoalimitedextentforshutdownmarginpriortoreachingcoldshutdown,apartstrokeexerciseofthesevalvescouldbeperformedatthattime.AllofthecheckvalveswillbepartstrokeexercisedduringeachcoldshutdownperVR-1andfullstrokeexercisedduringeachreactorrefuelingoutage.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992. | |||
RELIEFREQUESTNO.VR-7REVISION51/06/95SXSXRL'afetyInjection(8770-G-078Sh130)V-07000V-07001ThesevalvesopentoprovideflowpathsfromtheRWTtothesuctionoftheassociatedlow-pressuresafetyinjectionpump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionintotheRCSviatheLPSIpumps.DuringplantoperationthisisprecludedbecausetheLPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Atcoldshutdown,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.Therefore,theonlypracticalopportunityfortestingthesevalvesisduringrefuelingoutageswhenwaterfromtheRWTisusedtofillthecavity.D-12 RELIEFREQUESTNO.VR-7(cont.)REVISION51/06/95Thesevalveswillbepartial-flowexercisedduringquarterlytestingoftheLPSIpumpsviatheminimumflowcircuitandfull-flowexercisedduringeachreactorrefuelingoutage.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position1and,assuch,isconsideredtobeapproveduponsubmittal.D-13 RELIEFREQUESTNO.VR-8REVISION51/06/95GXRZEZ'afetyInjection(8770-G-078Sh130)V-3401V-3410ThesevalvesopentoprovideflowpathsfromtheRWTandthecontainmentsumptothesuctionoftheassociatedhigh-pressuresafetyinjectionpump(HPSI).Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionviatheHPSIpumpsintotheRCS.DuringplantoperationthisisprecludedbecausetheHPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.D-14 RELIEFREQUESTNO.VR-8(cont.)REVISION51/06/95Thesevalveswillbepartial-flowexercisedduringquarterlytestingoftheHPSIpumpsviatheminimumflowcircuitandfull-flowexercisedduringeachreactorrefuelingoutage.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position1and,assuch,isconsideredtobeapproveduponsubmittal.D-15 RELIEFREQUESTNO.VR-9REVISION51/06/95BYSZRiSafetyInjection(8770-G-078Sh130)V-3414V-3427Thesevalvesopentoprovideflowpathsfromtherespective'PSIpumpstothehigh-pressuresafetyinjectionheaders.Theyclosetopreventrecirculationthroughanidlepump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionintotheRCSviatheHPSIpumps.DuringplantoperationthisisprecludedbecausetheHPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.PartialflowexercisingofthesevalvesisperformedwheneveritsassociatedHPSIpumpisusedtorefillaSIT.TheacceptableSITlevelandpressurebandsspecifiedbytheTechnicalSpecificationsareverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore,thepartialflowtestcannotreadilybeincorporatedintoaquarterlytest.Alternateflowpathsforpartialflowtestsarelimitedbythedesignpressureofthepiping. | |||
RELIEFREQUESTNO.VR-9(cont.)REVISION51/06/95Thesevalveswillbeverifiedclosedquarterly.ThesevalvescheckwillbepartstrokeexercisedtotheopenpositionduringeachcoldshutdownperVR-1andfullstrokeexercisedtotheopenpositionduringeachreactorrefuelingoutage.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-17 RELIEFREQUESTNO.VR-10REVISION51/06/95GXG.GBL'.SafetyInjection(8770-G-078Sh131)V-3113V-3123V-3133V-3143A/CThesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjectionheaderstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Fullstrokeexercisingofthesevalveswouldrequireoperatingahighpressuresafetyinjection(HPSI)pumpatnominalaccidentflowrateandinjectingintothereactorcoolantsystemsincenofullflowrecirculationpathexists.DuringnormalpoweroperationthisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficientdischargepressuretoovercomereactorcoolantsystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceeding.thepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.PartialflowexercisingofoneofthesecheckvalvesisperformedwheneveritsassociatedSITisrefilled.TheacceptableSITlevelbandspecifiedbytheTechnicalSpecificationisverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore,thepartial'lowtestcannotreadilybeincorporatedintoaquarterlytest. | |||
RELIEFREQUESTNO.VR-10(cont.)REVISION51/06/95Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.ThesecheckvalvesarerequiredtobeleaktestedbytheTechnicalSpecifications(seeVR-2).Theleaktestutilizesthevolumeofpressurizedwater(200-250psig)inasafetyinjectiontank(SIT)topressurizethedownstreamsideofoneofthecheckvalves.Themotoroperatedvalve(MOV)upstreamofthecheckvalveisclosedandthedrain-linelocatedbetweentheMOVandcheckvalveisopened.Oncetheinitialvolumeoftrappedwaterisdrained,thecheckvalveleakageiscollectedusingplastictubingandpolybottles.Theleakagevolumeandcollectiontimesareusedtocalculatethecheckvalveleakagerate.ThedrainvalvesforthesetestsarelocatedalongthenorthandsouthwallsofthewestendofthepipetunnelintheUnit1reactorauxiliarybuilding(RAB).ThisareaoftheRABisdesignatedasahighradiationarea.Inthecenterofthepipingtunnelhallwaythegeneralarearadiation.levelsvaryfrom20to30mRem/Hr.Alongthewallsofthepipetunnelwherethedrainvalvesarelocated,thecontactradiationlevelsrangefrom200mRem/Hr.to1,600mRem/Hr.Thetestrequiresatleast3testpersonnelfor1to2hourstoproperlyperformtheprocedure.Inaddition,thetestpersonnelmusthandleuptoseveralgallonsofcontaminatedwaterpertest,someofwhichcouldbeunderpressurewhenfirstvented.Performingthistestprocedureeachquarterwouldresultinunnecessarypersonnelradiationexposuresandpossiblepersonnelcontaminations.Themainreasonforcheckvalveclosuretestsistoprovethatthecheckvalvewillreturntotheclosedpositiononceithasbeencycledopen.Duringnormalpoweroperation,"theHPSIheadercheck,valvesarecycledopenonlywhileitsassociatedSITisfilled.Performingareverseflowtestonacheckvalvethathasnotbeenopenedisnotwarranted.However,ifthesecheckvalvesarecycledopen,abackflowtestcouldbeperformedtoverifyclosure.SincetheSITsmustbepressurizedtoperformthetest,thetestcanonlybeperformedduringthoseoperatingmodeswhichrequiretheSITstobeoperational. | |||
RELIEFREQUESTNO.VR-10(cont.)REVISION51/06/95Thesevalveswillbepart-strokeexercisedopenwhilerefillingaSIT.TheSITtankswillonlyberefilledasrequiredtomaintainthemwithintheTechnicalSpecificationlimits.No'ITwillbefilledforthesolepurposeofpart-strokeexercisinganyoneofthesecheckvalves.Nhileinmodes1,2,and3(withpressurizerpressure>1750psia)abackflowtest,willbeperformedoneachcheckvalvecycledopenwhilefillingaSIT.Thetestwillbeperformedwithin24hoursafterthefillingoftheSIT.Atleastonceduringeachreactorrefuelingoutagethesevalveswillbefull-strokeexercisedtotheopenposition.ThesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting(seeVR-2).ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04and,assuch,isconsideredtobeapproveduponsubmittal.Thisreliefrequesthasbeenupdatedtoincludetheplant'sresponsetoAnomalyf8addressedbytheSt.LucieUnit1SafetyEvaluationissuedbytheNRCon26February1992.D-20 RELIEFREQUESTNO.VR-11REVISION51/06/95BYSTlRLSafetyInjection(8770-G-078Sh131)V-3114V-3124V-3134V-3144A/CThesevalvesopentoprovideflowpathsfromthelow-pressuresafetyinjectionheaderstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Sincenofullflowrecirculationpathexists,fullstrokeexercisingofthesevalveswouldrequireoperatingalowpressuresafetyinjection(LPSI)pumpatnominalaccidentflowrateandinjectingintothereactorcoolantsystem.AtpoweroperationthisisnotpossiblebecausetheLPSIpumpsdonotdevelopsufficientdischargepressuretoovercomereactorcoolantsystempressure.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication.Theonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.ThesecheckvalvesarerequiredtobeleaktestedbytheTechnicalSpecifications(seeVR-2).Theleaktestutilizesthevolumeofpressurizedwater(200-250psig)inasafetyinjectiontank(SIT)topressurizethedownstreamsideofoneofthecheck'valves.Themotoroperatedvalve(MOV)upstreamofthecheckvalveisclosedandthedrainlinelocatedbetween RELIEFREQUESTNO.VR-11(cont.)REVISION51/06/95theMOVandcheckvalveisopened.Oncetheinitialvolumeoftrappedwaterisdrained,thecheckvalveleakagei'collectedusingplastictubingandpolybottles.The*leakagevolumeandcollectiontimesareusedtocalculatethecheckvalveleakagerate.ThedrainvalvesforthesetestsarelocatedalongthenorthandsouthwallsofthewestendofthepipetunnelintheUnit1reactorauxiliarybuilding(RAB).ThisareaoftheRABisdesignatedasahighradiationarea.Inthecenterofthepipetunnelhallwaythegeneralarearadiationlevelsvaryfrom20to30mRem/Hr.Alongthewallsofthepipetunnelwherethedrainvalvesarelocated,thecontactradiationlevelsrangefrom200mRem/Hr.to1,600mRem/Hr.Thetestrequiresatleast3testpersonnelfor1to2hourstoproperlyperformtheprocedure.Inaddition,thetestpersonnelmusthandleuptoseveralgallonsofcontaminatedwaterpertest,someofwhichcouldbeunderpressurewhenfirstvented.Performingthistestprocedureeachquarterwouldresultinunnecessarypersonnelradiationexposuresandpossiblepersonnelcontaminations.Thesevalveswillbefull-strokeexercisedtotheopenpositionduringcoldshutdownperiodsperReliefRequestVR-1.ThesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting(seeVR-2).ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.D-22 RELIEFREQUESTNO..VR-12REVISION51/06/95BYSXl~SafetyInjection(8770-G-078Sh131)V-3215V-3225V-3235V-3245A/CThesevalvesopentoprovideflowpathsfromthesafetyinjectiontanks(SITs)tothereactorcoolantsystem(RCS)andclosetoisolatethetanksfromthehighpressureoftheRCSandthesafetyinjectionheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)TheonlypracticalmethodforfullstroketestingoftheSITdischargecheckvalvesisto'ischargethecontentsoftheSITstotheRCS.TheflowrateattainedduringtheSITdischargetestsissufficienttofullystrokethecheckvalCrediscstotheopenposition.FullstrokeexercisingoftheSITdischargecheckvalvescannotbeperformedinanyplantmodeotherthanrefuelingshutdownwhenthereactorvesselheadisremoved.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtestPerformingleaktestsofthesevalvesrequiresaconsiderableeffortsuchthattestingduringoperationwouldconstituteanunreasonableburdenontheplantstaff.D-23 REVISION51/06/95RELIEFREQUESTNO.VR-12(Cont.)WEachSITdischargecheckvalvewillbefull-strokedintheopendirectionduringrefuelingoutagesbydischargingtheSITstothe'reactorvessel.Underasamplingprogram,non-intrusivetestingofoneofthecheckvalvesonarotatingschedule,willbeperformedtoverifyitsdiscstrokestoitsbackstop.Shouldthesamplevalvebefoundtobeinoperable,theremainingthreevalvesmustbetestedusingnonintrusivetechniquesduringthesameoutage.Atleastonceeverytwo'(2)yearsthesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting.ThisreliefrequestforverifyingclosurebyPIVleaktestevery2yearsisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.Thealternateopeningagrees04,Position1tobeapprovedtechniqueforverifyingvalvefull-strokewiththeguidelinesofNRCGenericLetter89-asoutlinedbelowand,assuch,isconsidereduponsubmittal.1.PerformingafullflowtestoftheSITdischargecheckvalvesisimpracticalbecausetheflowrateattainedbydischargingthecontentsoftheSITstotheRCSorbyrecirculatingnormalshutdowncoolingsystemflowdonotmeetthevalvesmaximumrequiredaccidentconditionflow.UnderlargebreakLOCAaccidentconditions,themaximum(peak)flowratethroughthesevalveswouldbeapproximately20,000gpm.ThemaximumflowrateachievablebythedischargetestisrestrictedbythelongstroketimeoftheSITdischargeisolationvalve.TheSITdischargeisolationvalvesaremotoroperatedvalveswithanominalstroketimeof52seconds.2.ThefullstroketestoftheSITdischargecheckvalvesisperformedwiththereactorvesselheadremovedandthereactorcavityflooded.ThetestconsistsofestablishingaspecifiednitrogenpressureintheSITtobeusedasamotiveforcetodischargeaportionoftheSITinventorythroughthecheckvalves.TheinitialSITpressureandlevelarenominallysetat85psigand87.5%.TheseparameterswereselectedtoensuretheflowratedevelopedD-24 REVISION51/06/95RELIEFREQUESTNO.VR-12(Cont.)wouldbegreaterthantheflowraterequiredtostrokethevalvetothebackstopwithoutcompletelyemptyingtheSITandrapidlyinjectinganitrogenbubbleintothecontainmentatmosphere,whichisnotacceptablefromanairbornecontaminationstandpoint.ThetestisinitiatedbyopeningtheSIToutleti'solationmotoroperatedvalve.TheopeningstrokeoftheSIheadercheckvalveundertestisthenverifiedbymonitoringSITlevelandpressureasthecontentsoftheSITdischargeintotherefuelingcavity.Nonintrusiveacousticandeddy-.currenttechnologyisusedtoprovidepositiveindicationthattheflowrateachievedduringthetestscausesfullvalvedisctraveltothebackstopduringthedischargetest.Eddycurrentinstrumentationisutilizedtodeterminethatthevalvedisctravelsduringthedischargetest.Acousticinstrumentationisutilizedtodetecttheacousticimpactcausedbythevalvediskstrikingthebackstop.3.EachoftheSITdischargecheckvalveswerefullstroketestedduringtheUnit11994refuelingoutage.TheseSITdischargetestswereperformedinaccordancewithplantapprovedproceduralinstructions.EachvalvewasmonitoredduringtheSITdischargetestsutilizingITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationwiththeassistanceofITIMOVATSDiagnosticandEngineeringpersonnel.Theflowrates,asdeterminedbySITleveldecreaseovertime,achievedduringthetestsweresufficienttocausefullvalvedisctraveltothebackstop.Eddycurrentandacousticimpactanalysisdeterminedthateachofthevalvediscstraveledopenandimpactedthebackseatsduringthetests.Thenonintrusivetechniquesusedtoverifythesecheckvalvesfullyopenareconsidered"otherpositivemeans"inaccordancewithParagraphIWV-3522ofSectionXI.4.ITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationusedtoperformthistestingisownedandmaintainedbyFPL.ITIMOVATSsuppliedtheservicestoinitiallycalibratetheinstrumentationpriortothe1994refuelingoutageinaccordancewiththeITIMOVATS'QualityAssuranceManual.D-25 RELIEFREQUESTNO.VR-12(Cont.)REVISION51/06/95Theservicessuppliedwerecontrolledinaccordancewithapplicableprogramrequirementsof10CFR50AppendixBandANSIN45,2.FPLwillverifythecurrentcalibrationofthisequipmentorwillrecalibratetheinstrumentationtoITIMOVATSQualityAssuranceManualrequirementsortoFPLQualityAssurancerequirementspriortoitbeingutilizedforanyfutureSectionXICodetesting.5.TheSITdischargecheckvalvesarethesamesizeandmodelnumber.Theyareinstalledinidenticalorientationandexposedtothesameoperatingconditions.Eachofthesevalveshasbeendisassembledandinspectedduringpreviousrefuelingoutages.FP&Lhasadditionallyreviewedtheoperatingandmaintenancehistoryofsimilarvalvesusedthroughouttheindustryundercomparableconditions.Basedonthesereviewsandinspections,thereisnoevidenceofvalvedegradationwithrespecttotheirabilitytoopenandsatisfactorilypasstherequiredflow.ThisalongwiththeobservationthattheSITflowrateandpressuredroptracesobtainedduringthe1994refuelingoutagetestingarenearlyidentical,indicatethatthisbaselinedatawastakenwheneach-valvewasinsimilargoodworkingcondition.6.TheacceptancecriteriaforthealternativetestingoutlinedinthereliefrequestisconsistentwiththerequirementsofNRCGenericLetter89-04,Position1,andNRCrecommendationsoutlined'inDraftNUREG-1482,'GuidelinesforInserviceTestingatNuclearPowerPlants'D-26 RELIEFREQUESTNO.VR-13REVISION51/06/95SYSTEM'afetyInjection(8770-G-078Sh131)V-3217V-3227V-3237V-3247A/CThesevalvesopentoprovideflowpathsfromthesafetyinjection(SI)headerstothereactorcoolantsystem(RCS)andclosetoisolatetheheadersfromthehighpressureoftheRCS.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)TheonlypracticalmethodforfullstroketestingoftheSIheadercheckvalvesistodischargethecontentsofthesafetyinjectiontanks(SITs)totheRCS.TheflowrateattainedduringtheSITdischargetestsissufficienttofullystrokethecheckvalvediscstotheopenposition.FullstrokeexercisingoftheSIheadercheckvalvescannotbeperformedinanyplantmodeotherthanrefuelingshutdownwhenthereactorvesselheadisremoved.Part-stroketestingduringpoweroperationisnotpracticalbecauseaflowpathdoesnotexistduetohigherRCSpressure.Itispracticaltoconductapart-stroketestateachcoldshutdown.Duringcoldshutdown,theSIcheckvalvescanbepart-strokedbythenormalflowdeliveredtotheRCSviatheshutdowncoolingsystem.Shutdowncoolingflowratesdonotmeetthemaximumrequiredaccidentconditionflowanddonotfullystrokethevalvesopen.D-27 RELIEFREQUESTNO.VR-13(Cont.)REVISION51/06/95Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Performingleaktestsofthesevalvesrequiresaconsiderableeffortsuchthattestingduringoperationwouldconstituteanunreasonableburdenontheplantstaff.EachSIheadercheckvalvewillbefull-strokedintheopendirectionduringrefuelingoutagesbydischargingtheSITstothereactorvessel.Underasamplingprogram,non-intrusivetestingofoneofthecheckvalvesonarotatingschedule,willbeperformedtoverifyitsdiscstrokestoitsbackstop.Shouldthesamplevalvebefoundtobeinoperable,theremainingthreevalvesmustbetestedusingnonintrusivetechniquesduringthesameoutage.Duringeachcoldshutdownthesevalveswillbepartial-strokeexercisedusingtheLPSIpumpsperReliefRequestNo.VR-1.Atleastonceeverytwo(2)yearsthesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting.ThisreliefrequestforverifyingclosurebyPIVleaktestevery2yearsisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.Thealternatetechniqueforverifyingvalvefull-strokeopeningagreeswiththeguidelinesofNRCGenericLetter89-04,Position1asoutlinedbelowand,assuch,isconsideredtobeapproveduponsubmittal.1.PerformingafullflowtestoftheSIheadercheckvalvesisimpracticalbecausetheflowrateattainedbydischargingthecontentsoftheSITstotheRCSorbyrecirculatingnormalshutdowncoolingsystemflowdonotmeetthevalvesmaximumrequiredaccidentconditionflow.UnderlargebreakLOCAaccidentconditions,themaximum(peak)flowratethroughthesevalveswouldbeapproximately20,000gpm.ThemaximumflowrateachievablebythedischargetestisrestrictedbythelongstroketimeoftheSITdischargeisolationvalve.TheSITdischargeisolation REVISION51/06/95RELIEFREQUESTNO.VR-13(Cont.)valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.2.ThefullstroketestoftheSIheadercheckvalvesisperformedwiththereactorvesselheadremovedandthereactorcavityflooded.ThetestconsistsofestablishingaspecifiednitrogenpressureintheSITtobeusedasamotiveforcetodischargeaportionoftheSITinventorythroughthecheckvalves.TheinitialSITpressureandlevelarenominallysetat85psigand87.5%.TheseparameterswereselectedtoensuretheflowratedevelopedwouldbegreaterthantheflowraterequiredtostrokethevalvetothebackstopwithoutcompletelyemptyingtheSITandrapidlyinjectinganitrogenbubbleintothecontainmentatmosphere,whichisnotacceptablefromanairbornecontaminationstandpoint.ThetestisinitiatedbyopeningtheSIToutletisolationmotoroperatedvalve.TheopeningstrokeoftheSIheadercheckvalveundertestisthenverifiedbymonitoringSITlevelandpressureasthecontentsoftheSITdischargeintotherefuelingcavity.Nonintrusiveacousticandeddy-currenttechnologyisusedtoprovidepositiveindicationthattheflowrateachievedduringthetestscausesfullvalvedisctraveltothebackstopduringthedischargetest.Eddycurrentinstrumentationisutilizedtodeterminethatthevalvedisctravelsduringthedischargetest.Acousticinstrumentationisutilizedtodetecttheacousticimpactcausedbythevalvediskstrikingthebackstop.EachoftheSIheadercheckvalveswerefullstroketestedduringtheUnit11994refuelingoutage.TheseSITdischargetestswereperformedinaccordancewithplantapprovedproceduralinstructions.EachvalvewasmonitoredduringtheSITdischargetestsutilizingITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationwiththeassistanceofITIMOVATSDiagnosticandEngineeringpersonnel.Theflowrates,asdeterminedbySITleveldecreaseovertime,achievedduringthetestsweresufficienttocausefullvalvedisctraveltothebackstop.Eddycurrentandacousticimpactanalysisdeterminedthateachofthevalvediscstraveledopenandimpactedthebackseatsduringthetests.ThenonintrusivetechniquesusedtoverifytheseD-29 REVISION51/06/95RELIEFREQUESTNO."VR-13(Cont.)checkvalvesfullyopenareconsidered"otherpositivemeans"inaccordancewithParagraphIWV-3522,ofSectionXI.4.ITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationusedtoperformthistestingisownedandmaintainedbyFPL.ITIMOVATSsuppliedtheservicestoinitiallycalibratetheinstrumentationpriortothe1994refuelingoutageinaccordancewiththeITIMOVATSQualityAssuranceManual.Theservicessuppliedwerecontrolledinaccordancewithapplicableprogramrequirementsof10CFR50AppendixBandANSIN45.2.FPLwillverifythecurrentcalibrationofthisequipmentorwillrecalibratetheinstrumentationtoITIMOVATSQualityAssuranceManualrequirementsortoFPLQualityAssurancerequirementspriortoitbeingutilizedforanyfutureSectionXICodetesting.5.TheSIheadercheckvalvesarethesamesizeandmodelnumber.Theyareinstalledinidenticalorientationandexposedtothesameoperatingconditions.Eachofthesevalveshasbeendisassembledandinspectedduringpreviousrefuelingoutages.FP&Lhasadditionallyreviewedtheoperatingandmaintenancehistoryofsimilarvalvesusedthroughouttheindustryundercomparableconditions.Basedonthesereviewsandinspections,thereisnoevidenceofvalvedegradationwithrespecttotheirabilitytoopenandsatisfactorilypasstherequiredflow.ThisalongwiththeobservationthattheSITflowrateandpressuredroptracesobtainedduringthe1994refuelingoutagetestingarenearlyidentical,indicatethatthisbaselinedatawastakenwheneachvalvewasinsimilargoodworkingcondition.6.TheacceptancecriteriaforthealternativetestingoutlinedinthereliefrequestisconsistentwiththerequirementsofNRCGenericLetter89-04,Position1,andNRCrecommendationsoutlinedinDraftNUREG-1482,'GuidelinesforInserviceTestingatNuclearPowerPlants'.D-30 RELIEFREQUESTNO.VR-14REVISION51/06/95BYKZK'ainSteam(8770-G-079,Sh1)V-08117V-08148ThesevalvesclosetopreventunrestrictedreleaseofsteamfromanunaffectedsteamgeneratorintheeventofasteamlineruptureupstreamofanMSIV.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnopracticalmeansorprovisionforpressurizingthepipingdownstreamofthesevalvesinordertoverifyclosureofthesevalves.Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheremainingothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.Followingvalvereassemblyforwardflowoperationofthevalveswillbeobservedduringtheensuingstartup.ThissatisfiestherequirementsofGenericLetter8904'osition2and,assuch,isconsideredtobeapproveduponsubmittal.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992. | |||
RELIEFREQUESTNO.VR-15REVISION51/06/95GX.STERMakeupWater(8770-G-084,Sh1)V-15328A/CThisvalveclosestoprovideprimarycontainmentforthepenetrationrelatedtothemakeupwatersupplylinetothecontainmentbuilding.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thisisasimplecheckvalvewithnoexternalmeansofposition.indication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuilding,whichisimpracticalduringplantoperationandwouldbeanunreasonableburdenon'heplantstafftoperformatcoldshutdown.Atleastonceeverytwo(2)years,thisvalvewillbeverifiedtocloseinconjunctionwiththeAppendixJleaktestingprogram.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-32 RELIEFREQUESTNO.VR-16REVISION51/06/95BXRZEH'nstrumentAir(8770-G-085,Sh2)V-18195A/CThisvalveclosestoprovideprimarycontainmentforthepenetrationrelatedtotheinstrumentairsupplylinetothecontainmentbuilding.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thisisasimplecheckvalvewithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuildingandsecuringallinstrumentairtothecontainment.Duetoaccesslimitationsandtheundesirabilityofisolatingtheairsupplyforcriticalequipment,thisisimpracticalduringplantoperationandwouldbeanunreasonableburdenontheplantstafftoperformatcoldshutdown.Atleastonceeverytwo(2)years,thisvalvewillbeverifiedtocloseinconjunctionwiththeAppendixJleaktestingprogram.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.'ID-33 RELIEFREQUESTNO.VR-17REVISION51/06/95BXRX1~ContainmentSpray(8770-G-088)V-07119V-07120Thesevalvesopentoprovideflowpathsfromtherefuelingwatertank(RWT)tothecontainmentsprayandsafetyinjectionsuctionheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingofthesevalveswouldrequiresimultaneousoperationoftwoHPSIpumps,oneLPSIpump,andonecontainmentspraypumptoverifythateachvalvecouldpassthemaximumdesignaccidentflow.Suchatestisnotpracticalduringanyplantoperationalmodes.Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitsofthevariousSafetyInjectionsystems.D-34 RELIEFREQUESTNO.VR-17(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.Followingreassembly,eachvalvewillbepartial-flowexercisedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-35 RELIEFREQUESTNO.VR-18REVISION51/06/95BXSX1'Z'ontainmentSpray(8770-G-088)V-07129V-07143Thesevalvesopentoprovideflowpathsfromtherespectivecontainmentspraypumptothecontainmentsprayheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Fullstrokeexercisingofthesevalveswouldrequireoperatingeachcontainmentspraypumpatnominalaccidentflowrate~Sinceexercisingthesevalvesthroughthenormalcontainmentsprayflowpathwouldresultinsprayingdownthecontainment,theonlypracticalflowpathavailableforsuchatestrequirespumpingwaterfromtheRWTtotheRCSviatheshutdowncoolingloops'tcoldshutdown,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.D-36 RELIEFREQUESTNO.VR-18(cont.)REVISION51/06/95Eachofthesevalveswillbepartial-strokeexercisedquarterlyinconjunctionwithtestingofthecontainmentspraypumpsviatheminimumflowtestline.Duringeachrefuelingoutage,eachvalvewillbeexercisedatleastoncetodemonstratefullstrokecapability.ThisreliefrequestisapprovedbyNRCSafetyEva'luationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-37 RELIEFREQUESTNO.VR-19REVISION51/06/95BYRHRL'ontainmentSpray(8770-G-088)V-07172V-07174Thesevalvesopentoprovideflowpathsfromthecontainmentsumptothecontainmentsprayandsafetyinjectionsuctionheadersduringrecirculation.Checkvalvesshallbeexercisedatleast.onceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Exercisingthesevalvestoanyextent(fullorpartialflow)wouldrequirefloodingthecontainmentsumpandpumpingfromthesumptothecontainmentsprayheadersandthereactorcoolantsystem.ItisbothundesirableandimpracticaltofloodthecontainmentsumpandtransferthatwatertotheRCSortothesprayheadersasitwouldcreatesignificantcontaminationhazardsandhaveanadverseeffectonplantchemistry.Therearenootherprovisionsforexercisingthesevalves.Furthermore,sinceflowcannotbepassedthroughthesevalves,non-intrusivetestingmethodsofverifyingvalveoperationarenotapplicable.D-38 RELIEFREQUESTNO,VR-19(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.ThissatisfiestherequirementsofGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.Since,asdiscussedabove,partialflowtestingofthesevalvesisnotpractical,exercisingafterreassemblywillnotbeperformed.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-39 RELIEFREQUESTNO.VR-20REVISION51/06/95SXSZRZ'ontainmentSpray(8770-G-088)V-07192V-07193Thesevalvesopentoprovideflowpathsfromtherespectivecontainmentsprayheaderstothecontainmentsprayrings.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Anyexercising(full-strokeorpartialflowtesting)ofthesevalvesusingsystemflowrequirestheoperationofeachcontainmentspraypumpthroughthenormalcontainmentsprayflowpaths.Operatingthesysteminthismannerwillresultinspillingsignificantquantitiesofcontaminatedwaterthroughoutthecontainmentbuilding.Thisisobviouslyundesirableandisconsideredtobeimpractical..Becausenon-intrusivetechniquesingeneralrequiresystemflow,theyarenotunderconsiderationforthesevalves.Also,leaktestingofthesevalvesisnotpossiblesince,duetothesystemconfiguration,thereisnopracticalmeansofclosingthepipingdownstreamofthesevalves.PerformingperiodicinspectionsofbothvalvesduringrefuelingoutageswillsatisfytherequirementofGenericLetter89-04Position1.D-40 RELIEFREQUESTNO.VR-20(cont.)REVISION51/06/95Duringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-41 RELIEFREQUESTNO.VR-21REVISION51/06/95GX.SXRL'ontainmentSpray(8770-G-088)v-07256V-07258Thesevalvesopentoprovideflowpathsfromthesprayadditivetanktotherespectivecontainmentspraypumpsuctionheader.Theyclosetopreventreverseflowandrecirculationthroughtheeductorleadingtoanidlecontainmentspraypump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Testingthesevalvesduringnormalplantoperationduringtestingofthecontainmentspraypumpswouldcontaminatethecontainmentspraypipingwithsodiumhydroxide.Theonlypracticalmeansoftestingthesevalvesrequiresconnectionofasourceofdemineralizedwateratthetankdischargethendirectingwaterintothecontainmentspraypiping.Thisplacesbothcontainmentspraytrainsoutofserviceandwouldentailasomewhatcomplexprocedurethatisconsideredoutsidethescopeofworkthatistypicallyperformedduringaroutinecoldshutdownperiod,thus,suchatestisimpracticalduringperiodsotherthanreactorrefuelingoutages.D-42 RELIEFREQUESTNO.VR-21(cont.)REVISION51/06/95Duringeachreactorrefuelingoutagebothofthesevalveswillbefull-strokeexercised.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,and,assuch,isconsideredtobeapproveduponsubmittal.D-43 REVISION51/06/95RELIEFREQUESTNO.VR-22BEG.I3~ContainmentSpray(8770-G-088)V-07269V-07270Thesevalvesopentoprovideaflowpathfromtherespectivecontainmentsprayheadertothesprayadditiveeductors.Thisflowthroughtheeductorsprovidesthemotiveforcetoinjectasodiumhydroxidesolutionintothesuctionofthecontainmentspraypumps.Thesecheckvalvescloseuponthefailureofonecontainmentspraypumpfollowinganaccident.Thecheckvalveinthefailedtrainclosestopreventbackflowfromtheoperatingheadertotheidlecontainmentsprayheader.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thesecheckvalvescannotbefullflowexercisedduringnormaloperation.Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,position1.ReverseflowtestingofthesecheckvalvescannotbeperformedduringanyModewithoutundueburden.Duringnormaloperations,bothtrainsofthecontainmentspraysystem,includingthesodiumhydroxidesystem,mustbeoperable.Attemptingabackflowtestofeitherofthesevalveswouldrequireavalveline-upwhichwouldplacebothtrainsofthesodiumhydroxidesystemsoutofservice.D-44 REVISION51/06/95RELIEFREQUESTNO.VR-22(cont.)Tobackflowtestthetwocheckvalves,asource*ofpressurizedboratedwatermustbeconnecteddownstreamofthecheckvalves.Theupstreamsideofthecheckvalvesmustbedepressurizedanddrainedinor'dertocollectthebackleakagethroughoneofthecheckvalves.ThedrainvalvesforthesetestsarelocatedintheshutdownheatexchangerroomsintheUnit1reactorauxiliarybuilding(RAB).Thegeneralarearadiationlevelsaroundthedrainvalvesvaryfrom50mRem/Hrtogreaterthan100mRem/Hr,thecontactradiationlevelsrangefrom100to1200mRem/Hr.Approximately220feetof12inchpipingmustbedrainedforeachtest,Performingthesetestswouldresultinunnecessarypersonnelradiationexposures,possiblepersonnelcontaminations,andgenerateover2,600gallonsofborated,contaminatedwaterthatmustbedrained,treated,andfinallyreplaced.Anotherproblemwithperformingthebackflowtestisthesystemline-upforthetest.Thetestmustrelyupontwo10inchgatevalvestoberelativelyleaktightagainstthepressureofshutdowncoolingoperatinginthealternatecontainmentsprayheader.Leakagethroughthesetwo10inchgatevalves(notrequiredtobeleaktight),wouldresultinaninaccurateleakageratemeasurementforthevalvesintest.Thiscouldresultindeclaringthecheckvalvesinoperativeandperformingunnecessarymaintenance.Eachofthesevalveswillbepartial-strokeexercisedquarterlyinconjunctionwithtestingofthecontainmentspraypumps.Duringeachreactorrefuelingoutageatleastone'fthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyboththeopenandclosecapabilities.Inspectionsshallbescheduledsuchthateachvalveissubjecttoinspectionatleastonceeverysixyears.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.0ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.D-45 REVISION51/06/95RELIEFREQUESTNO.VR-23WITHDRAWNbyRevision$3D-46 RELIEFREQUESTNO.VR-24REVISION51/06/95WITHDRAWNbyRevision$4D-47 | |||
RELIEFREQUESTNO.VR-25REVISION51/06/95BXSXJKUltimateHeatSink(8770-G-093)SB-37-1SB-37-2ThesevalvesareopenedtoprovideasecondsourceofcoolingwaterfromBigMudCreek.CategoryAandBvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3412(a),IWV-3415,andIWV-3416.(IWV-3411)TheoperationofthesevalvesislimitedforenvironmentalconcernstominimizethequantityofwaterdrawnfromtheIndianRiveranddischargedtotheocean.ForthisreasontheFUSAR(Section9.2.7)specifiesexercisingthesevalvesatsix(6)monthintervals.IThesevalveswillbeexercisedonlyonceeverysix(6)months'ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-48 | |||
RELIEFREQUESTNO.VR-26REVISION51/06/95WITHDRAWNbyRevisionf4D-49 | |||
RELIEFREQUESTNO.VR-27WITHDRAWNbyRevision$4REVISION51/06/95D-50 0 | |||
RELIEFREQUESTNO.VR-'28REVISION51/06/95SYSXKX'hemicalandVolumeControlSystem(8770-G-078,Sh121)V-2443V-2444Thesevalvesopentoprovideaflowpathfromtheboricacidmakeuppumpstotheemergencyborationheader.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Full-stroketestingthesevalvesrequiresoperatingtheboricacidmakeuppumpsatornearratedflowandverifyingfullaccidentflowthrougheachvalve.OperatingoftheBAMPumpsdischargingintoemergencyborationlinewouldcausetheintroductionofhighlyconcentratedboricacidsolutionfromtheBAMTankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.AlargeenoughboronadditionwouldresultinanunscheduledplanttripandapossibleinitiationofSafetyInjectionSystems.Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-boxationoftheRCS.ThewastemanagementsystemwouldbeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireproce'ssingtodecreaseitsboronconcentration.Inadditiontotheabove,thereisnoflowratemeasurementinstrumentationinstalledinthisflowpath. | |||
RELIEFREQUESTNO.VR-28(cont.)REVISION51/06/95AsecondcircuitthatrecirculateswatertotheRWThasflowratemeasuringinstrumentationinstalledhoweveritislimitedto30gpm(BAMPumpdesigncapacityis142gpm).Eachofthesevalveswillbepartialstrokeexercisedquarterly.Duringtestingofthe.boricacidmakeuppumpsperformedduringeachreactorrefueling(SeeReliefRequestPR-5),systemflowratewillbemeasuredtoverifyfullstrokeofthesevalves.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-52 RELIEFREQUESTNO.VR-29REVISION51/06/95SYSX~SafetyInjectionSystem(8770-G-078,Sh130)V-3101V-3103Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjectionpumpstotherefuelingwatertanktoprovideforminimumflowthroughtherespectivepumpsintheeventtheyareoperatingunderlowornoflowconditions.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,Position1.D-53 REVISION51/06/95RELIEFREQUESTNO.VR-29(cont.)Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.Duringeachreactorrefuelingoutagethesetwovalveswillbefull-flowtested.OnUnit1theHPSIpumpsarecapableoftakingsuctionfromthedischargeoftheshutdown.coolingheatexchangers.TheflowpathwillbefromtherefuelingcavitytotheRWT,viatheshutdowncoolingsystemandHPSIpumpmini-flowrecirculationline.TheflowratewillbecalculatedbymeasuringtheincreaseintheRWTvolumeanddividingitbytheHPSIpumpruntime.ThistestlineupreducesRCSinventoryandcanonlybeperformedduringrefuelingoutageswhenthetheheadisoffthereactorpermittingrefuelingcavityinventorytobedrainedtotheRWT.TestingateachrefuelingoutageisanallowabledeferraloftherequiredtestingasallowedbyOM-10.OM-10specifiesfull-strokeexercisingateachrefuelingoutageiftestingisimpracticalbothquarterlywhileinoperationandduringcoldshutdownoutages.TheuseoftheOM-10paragraph4.3.2requirementsapplicabletothisreliefrequestwereapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.ThisreliefrequestislistedfordocumentationpurposesonlyasrequiredbytheCode(IWV-3412,IWV-3522,andOM-10,paragraph6.2).D-54 RELIEFREQUESTNO.VR-30REVISION51/06/95SYRIAKSafetyInjectionSystem(8770-G-078,Sh130)V-3104V-3105Thesevalvesopentoprovideflowpathsfromthelow-pressuresafetyinjectionpumpstotherefuelingwatertanktoprovideforminimumflowthroughtherespectivepumpsintheeventtheyareoperatingunderlowornoflowconditions.Theycloseduringshutdowncoolingandlong-termrecirculationtopreventrecirculationthroughtheidlepump(s).Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,Position1.D-55 RELIEFREQUESTNO.VR-30(cont.)REVISION51/06/95Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.Duringeachreactorrefuelingoutagethesetwovalveswillbefull-flowtested.TheflowpathwillbefromtherefuelingcavitytotheRWTviatheshutdowncoolingsystemandtheLPSIpumpmini-flowrecirculationline.TheflowratewillbecalculatedbymeasuringtheincreaseintheRWTvolumeanddividingitbytheLPSIpumpruntime.ThistestlineupreducesRCSinventoryandcanonlybeperformedduringrefuelingoutageswhenthetheheadisoffthereactorpermittingrefuelingcavityinventorytobedrainedtotheRWT.TestingateachrefuelingoutageisanallowabledeferraloftherequiredtestingasallowedbyOM-10.OM-10specifiesfull-strokeexercisingateachrefuelingoutageiftestingisimpracticalbothquarterlywhileinoperationandduringcoldshutdownoutages~TheuseoftheOM-10paragraph4.3.2requirementsapplicabletothisreliefrequestwereapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.ThisreliefrequestislistedfordocumentationpurposesonlyasrequiredbytheCode(IWV-3412,IWV-3522,andOM-10,paragraph6.2).D-56 RELIEFREQUESTNO.VR-31REVISION51/06/95BXSZEH'eedwaterSystem(8770-G-080,Sh3)V-09303V-09304V-09305V-12507ValvesV-09303throughV-09305opentoprovideflowpathsfromtheauxiliaryfeedwaterpumpdischargetothecondensatestoragetanktoensureadequatepumpcoolingduringlowflowconditions.V-12507openstoprovideadischargeflowpathforbearingcoolingwaterfromthesteam-drivenauxiliaryfeedwaterpump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingofthesevalvesasrequiredbytheGenericLetter89-04,Position1.Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.D-57 RELIEFREQUESTNO.VR-31(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleast-oneofthethreeAFWpumpminimumflowrecirculationvalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothertwovalveswillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.DuringeachreactorrefuelingoutageV-12507willbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbepartial-flowexercisedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-58 RELIEFREQUESTNO.VR-32REVISION51/06/95WITHDRAWNbyRev.4D-59 RELIEFREQUESTNO.VR-33REVISION51/06/95WITHDRAWNbyRev.3D-60 RELIEFREQUESTNO.VR-34REVISION51/06/95PrimaryContainmentValves6-inchesNPSandlargersubjecttoleakageratetestingper10CFR50,AppendixJ.A/C(CheckValves)A(Motor-operatedvalves)Eachofthesevalvesisdesignatedasacontainmentisolationvalvemaintainingtheleakrateintegrityoftheprimarycontainmentinthecaseofanaccident.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Theusefulnessofapplyingthisrequirementdoesnotjustifytheburdenofcompliance.ThispositionissupportedbyNRCGenericLetter,Position10Leakratetestresultsforvalves6-inchesorgreater(NPS)willbeevaluatedperIWV-3426andIWV-3427(a)however,therequirementsofIWV-3427(b)willnotbeapplied.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position10and,assuch,isconsideredtobeapproveduponsubmittal. | |||
RELIEFREQUESTNO.VR-35REVISION51/06/95BY'iZEK'ntakeCoolingWater(8770-G-082,Sh1)TCV-14-4ATCV-14-4BThesevalvesaretemperaturecontrolvalvesthatcontroltheintakecoolingwaterflowthroughthecomponentcoolingheatexchangers.Thestroketimeofallpoweroperatedvalvesshallbemeasuredto.....,wheneversuchavalveisfull-stroketested.(IWV-3413(b))Thesevalvesareairoperated,springreturnvalvesthatfailtotheopenposition.Theyareeachprovidedwithanactuatorthatpositionsthevalveinresponsetoanairsignalinputfromitstemperaturecontroller.Inordertostrokeoneofthesevalvesandperformthefailsafetest,thevalve'sinstrumentairisolationvalvemustbeclosedandthevalve'sactuatorde-pressurizedthroughthemoistureseparatorvent.Oncetheinstrumentairisolationvalvehasbeenclosed,theairpressurewillbegintodecrease.Theventpathmustbemanuallyheldopenandisdependentuponthefingerpressureoftheoperator.Theratethattheactuatorcanbede-pressurizedisdependentuponthetimeittakestoclosetheisolationvalveandventofftheairpressure.Asaresult,themeasurementofthevalvestroketimewouldbesimplyan"estimate"andwouldvarydependentupontheoperatorperformingthetest.Thevaryingstroketimescouldplacethesevalvesinalertneedlesslyandwouldnoteffectivelyreflecttheconditionofthesecontrolvalves.D-62 RELIEFREQUESTNO.VR-35(cont~)REVISION51/06/95Thesevalveswillbeexercisedandfailsafetestedonceeachquarter.Duringvalveexercisingandfailsafetesting,thevalve'sstroketimewillbemeasuredandcomparedagainstthemaximumallowedstroketime.Shouldthemeasuredstroketimeexceedthemaximumallowedthevalvewillbedeclaredoutofserviceandappropriatecorrectiveactionstaken.Thevalves'troketimeswillnotbesubjecttoevaluationandcorrectiveaction(increasedtestfrequency)perIWV-3417(a).ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary29,1993.D-63 RELIEFREQUESTNO.VR-36REVISION51/06/95WITHDRAWNbyRevision$4D-64 RELIEFREQUESTNO.VR-37REVISION51/06/95WITHDRAWNbyRevision44D-65 RELIEFREQUESTNO.VR-38REVISION51/06/95BYRZRZ'eedwater(8770-G-080,Sh3)V-09248V-09280Thesevalvesopentoprovidethenormalflowpathsforfeedwatermakeuptothesteamgenerators(non-safetyfunction).TheyclosetoisolatethemainfeedwatersystemfromtheAFWpumpflowpathtothesteamgenerators.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequireisolatingtheassociatedsteamgenerator.Thisisclearlynotpracticalandwouldresultinanunacceptableplanttransient.Duringshutdownperiods,duetotheplantconfiguration,thereisnopracticalwaytoreverseflow(pressure)testthesevalvestoverifyclosure'-66 REVISION51/06/95RELIEFREQUESTNO.VR-38(cont.)Duringeachreactorrefueloutages'tleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-67 RELIEFREQUESTNO.VR-39REVISION51/06/95SYRZEK'afetyInjection(8770-G-078,Sh.131)v-3480V-3651V-3481V-3652A(Motor-operatedvalves)Themotor-operatedvalvesopenforresidualheatremovalrecirculationduringshutdown.Eachofthesevalvesisdesignatedasapressureisolationvalve(PIV)andprovidesisolationofsafeguardsystemsfromtheRCS.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Leaktestingofthesevalvesisprimarilyforthepurposeofconfirmingtheircapabilityofpreventingover-pressurizationandcatastrophicfailureofthesafetyinjectionpipingandcomponents.ThesefourMOV'sarenotaddressedintheSt.LucieUnit1TechnicalSpecifications3.4.6.2asaPIVbuttheyaretestedasthoughtheywere.TheTechnicalSpecificationsaddressesthequestionofvalveintegrityinamoreappropriatemannerforthesevalves.SatisfyingboththeTechnicalSpecificationandtheCodeacceptancecriteriaisnotwarrantedandimplementationwouldbedifficultandconfusing.D-68 RELIEFREQUESTNO.VR-39(cont.)REVISION51/06/95TheleakagerateacceptancecriteriaforthesevalveswillbeestablishedpertheSt.LucieUnit1TechnicalSpecifications,Table3.4.6-1.Leakagerateslessthan1.0gpmareacceptable.2.Leakageratesgreaterthan1.0gpmbutlessthanorequalto5.0gpmareacceptableifthelatestmeasuredratehasnotexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.3.Leakageratesgreaterthan1.0gpm,butlessthanorequalto5.0gpm,areunacceptableifthelatestmeasuredrateexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.4,Leakageratesgreaterthan5.0gpmareunacceptable.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-69 RELIEFREQUESTNO.VR-40REVISION51/06/95SYZZEH'ainSteam(8770-G-079,Sh1)V-08130V-08163.ThesevalvesopentoprovideflowpathsforsteamfromthesteamgeneratorstotheAFWpumpturbine.Theycloseduringanaccidenttoisolatethenon-affectedsteamgeneratorandpreventtheuncontrolledblowdownofbothsteamgenerators.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequiredisolatingtheassociatedsteamgeneratorfromthesteamsupply-linesandventingthepipingbetweentheclosedisolationvalveandthecheckvalve.ItisconsideredtobeimprudenttoisolatethesteamsupplytotheAFWpumpsduringoperationand,inaddition,itisundesirabletosubjectplantpersonneltothehazardsassociatedwithventinganysteamlineattheseoperatingconditions.Likewise,reverseflow(closure)testingofthesevalveswouldnecessitatepressurizingthedownstreamsidewithsteamfromtheothersteamgeneratorandopeninganupstreamvent.Fromtheaspectofpersonnelsafetyitisundesirabletosubjectplantpersonneltothepotentialhazardsassociatedwithventinglivesteamattheseoperatingconditions.D-70 RELIEFREQUESTNO.VR-40(cont.)REVISION51/06/95Thesetwocheck.valvesarepartialflowexercisedeachquarterandfullflowexercisedeachcoldshutdownsDuringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbeexercised(fullorpartial-stroke)toverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,wasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-71 RELIEFREQUESTNO.VR-41REVISION51/06/95SXSXEK'ainSteam(8770-G-079,Sh1)V-08372V-08373Thesecheckvalvescloseduringanaccidenttoisolatethenon-affectedsteamgeneratorandpreventtheuncontrolledblowdownofbothsteamgeneratorsCheckvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequiredisolatingtheassociatedsteamgeneratorfromthesteamsupplylinesandventingthepipingbetweentheclosedisolation,valveandthecheckvalve.ItisconsideredtobeimprudenttoisolatethesteamsupplytotheAFWpumpsduringoperationand,inaddition,itisundesirabletosubjectplantpersonneltothehazardsassociatedwithventinganysteamlineattheseoperatingconditions.Likewise,reverseflow(closure)testingofthesevalveswouldnecessitatepressurizingthedownstreamsidewithsteamfromtheothersteamgeneratorandopeninganupstreamvent.Fromtheaspectofpersonnelsafetyitisundesirabletosubjectplantpersonneltothepotentialhazardsassociatedwithventinglivesteamattheseoperatingconditions.D-72 RELIEFREQUESTNO.VR-41(cont.)REVISION51/06/95Duringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbeexercised(fullorpartial-stroke)toverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,'osition2andwasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-73 AppendixEValveProgramColdShutdownJustification REVISION501/6/95AppendixE:COLDSHUTDOWNJUSTIFICATIONSThisappendixisintendedtoprovidethejustificationforperformingvalveexercisingonlyatcoldshutdownconditionsaspermittedbyIWV-3412(a),3415and5322.Specificallyincludedinthiscategoryarethefollowing:Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardizetheimmediatesafetyoftheplantorsystemcomponents;r,Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguardsystemtobeinoperable;*Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransientthatcouldleadtoaplanttrip;or*Whentestrequirementsorconditionsareprecludedbysystemoperationoraccess.ColdshutdowntestingisperformedunderconditionsoutlinedinReliefRequestVR-1.PCV-1100EandPCV-1100FPressurizerSprayControlValvesDuringnormalpoweroperations,thesetwovalvesareusedtocontrolRCSpressurebyautomaticallythrottlingthesprayflowgoingintothepressurizer.Fullyopeningthesevalves,inpreparationfortimingthestrokeclosedtest,wouldhaveanimmediateandnegativeaffectonRCSpressure.Thegreatlyincreasedsprayflowwouldcondensepartofthesteambubbleinsidethepressurizer,causingthepressurizer'spressure,andthereforetheRCSpressure,todroprapidly.TheonlypossibletimetoexercisethesevalveswouldbewhiletheunitisinModes5or6whenthereisnosteambubbleinthepressurizer. 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REVISION501/6/95V-1402andV-1404Power-QperatedReliefValvesDuetothepotentialimpactoftheresultingtransientshouldoneofthesevalvesopenprematurelyorstickintheopenposition,itisconsideredimprudenttocyclethemduringplantoperationwiththereactorcoolantsystempressurized.V-1441thru'-1446andV-1449ReactorCoolantSystemVentsThesevalvesareadministrativelycontrolledinthekey-lockedclosedpositionwiththepowersupplydisconnectedtopreventinadvertentoperation.SincetheseareClass1isolationvalvesforthereactorcoolantsystem,failureofavalvetocloseorsignificantleakagefollowingclosurecouldresultinalossofcoolantinexcessofthelimitsimposedbyTechnicalSpecification3.1.3leadingtoaplantshutdown.Furthermore,ifavalveweretofailopenorvalveindicationfailtoshow'thevalvereturnedtothefullyclosedpositionfollowingexercising,prudentplantoperationwouldprobablylikelyresultinaplantshutdown.SE-02-03andSE-02-04AuxiliaryPressurizerSprayValvesOpeningeitherofthesevalves(orfailureintheopenposition)duringplantoperationwouldcauseanRCSpressuretransientthatcouldpotentiallyadverselyaffectplantsafetyand-leadtoaplanttrip.Inaddition,thepressurizerspraypipingwouldbesubjectedtoundesirablethermalshock.E-2 REVISION501/6/95V-2431AuxiliaryPressurizerSprayCheckValveInordertotestthisvalve,eitherSE-02-03orSE-02-04mustbeopened.Openingeitherofthesevalves(orfailureintheopenposition)duringplantoperationwouldcauseanRCSpressuretransientthatcouldpotentiallyadverselyaffectplantsafetyandleadtoaplanttrip.Inaddition,thepressurizerspraypipingwouldbesubjectedtoundesirablethermalshock.V-2515andV-2516LetdownLineIsolationValvesClosingeitherofletdownlinefrompressurizerleveltrip.IfavalveshutdownwouldbethesevalvesduringoperationisolatesthetheRCSandwouldresultinundesirabletransientswiththepotentialforaplantfailedtoreopen,thenaexpeditedplantrequired.V-2505andSE-01-01RCPControlBleedoffIsolationValvesExercisingeitherofthesevalvestotheclosedpositionwhenanyofthereactorcoolantpumps(RCP's)areinoperationwouldinterruptflowfromtheRCPsealsandresultindamagetothepump(s).V-2501VolumeControlTankOutletValveClosingthisvalveduringoperationof'chargingpumpwouldisolatetheVCTfromthechargingpumpsuctionheaderdamaginganyoperatingchargingpumpsandinterruptingtheflowofchargingwaterflowtotheRCSwiththepotentialofRCStransientsandplanttrip.E-3 REVISION501/6/95V-3106andV-3107LPSIPumpDischargeCheckValvesDuringnormalplantoperation,theLPSIPumpscannotdevelopsufficientdischargepressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection.TheonlyothertestflowpathavailableisthroughtheshutdowncoolinglinerecirculatingtotheRWT.ThiswouldrequireopeningvalvesHCV-3657,V-3460andV-3459.Withthesevalvesopen,bothtrainsoftheLPSIsubsystemwouldbeinoperable,thus,thistestingschemeisunacceptable.V-3659andV-3660MinimumFlow/RecirculationLineIsolationValvesFailureofeitherofthesevalvesintheclosedpositionduringtestingwillrenderallunitsafetyinjectionpumpsinoperableduetothehighprobabilityofdamageshouldthesepumpsbestartedandoperatedwithoutsufficientflowforcoolingofpumpinternalcomponents.V-07009andV-3463SITankDrain/TestLinetoRWTCyclingthesemanualvalveswouldconstituteabreachofcontainmentintegrity,asdefinedinTechnicalSpecifications3.6.1.1,andthereforeopeningthesevalvesisprecludedinModes1,2,3,and4.V-3480,3481,3651,and3652ShutdownCoolingRCSIsolationValvesThesevalvesareprovidedwithelectricalinterlocksthatpreventopeningwheneverReactorCoolantSystempressureexceeds268psia.Thisprecludesexercisingthesevalvesinanyotherplantconditionthancoldshutdown.E-4 REVISION501/6/95V-3614,V-3624,V-3634andV-3644SITankDischargeIsolationValvesDuringnormalplantoperation,thesevalvesareadministrativelycontrolledtobelockedopenwiththeirbreakersrackedouttoensuretheyremainintheopenpositionwithnochanceofmisalignment.ThesevalvesarealsointerlockedsuchthattheywillautomaticallygoopenifRCSpressureisgreaterthan350psia.Therefore,thevalvescanonlybecycledduringModes4(<350psia),5,and6.V-6779NitrogenHeaderContainmentIsolationCheckBackflowtestingofV-6779requiresthatthedownstreamsideofthevalveispressurizedandtheupstreamsideisvented.Toventtheupstreamsideofthevalve,ablankflangemustberemovedandthedrainvalve,V-6340,opened.Withthedrainvalveopen,V-6779becomestheonlycontainmentisolationvalveforthispenetrationcausingcontainmentintegritytobebreached.Therefore,thebackflowtestcanonlybeperformedwhencontainmentintegrityisnotrequired(Modes5or6).HCV-08-1A&BMainSteamIsolationValvesDuringplantoperationatpower,closureofeitherofthese-valvesisnotpracticalasitwouldrequireisolatingasteamgeneratorwhichwouldresultinaseveretransientonthesteamandreactorsystemsandapossibleplanttrip.MV-09-07and08MainFeedwaterIsolationValvesDuringplantoperationatpower,closureofeitherofthesevalvesisnotpracticalasitwouldrequireisolatingasteamgeneratorwhichwouldresultinaseveretransientonthesteamandreactorsystemsandaplanttrip.E-5 REVISION501/6/95V-12174andV-12176AuxiliaryFeedwaterPumpSuctionCheckValvesFull-strokeexercisingofthesevalveswouldrequireoperationofarelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.Thesevalveswillbepartialstroketestedduringquarterlytestingviatheminimumflowrecirculationlines.V-09107,09123,and09139AuxiliaryFeedwaterPumpDischargeCheckValvesFull-.strokeexercisingofthesevalveswouldrequireoperationoftherelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.V-09119,09135,09151,and09157AuxiliaryFeedwaterSupplyCheckValvesFull-strokeexercisingofthesevalveswouldrequireoperationofarelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.HCV14lg2g6&7RCPCoolingWaterSupply/ReturnIsolationValvesThesevalvesarerequiredtobeopentoensurecontinuedcoolingofreactorcoolantpumpauxiliarycomponentsandthecontrolroddrives.ClosinganyofthesevalvesduringplantoperationwouldresultinsevereRCPandCRDdamageleadingtoplantoperationinapotentiallyunsafemodeandasubsequentplantshutdown.E-6 REVISION501/6/95HCV-14-3A&BShutdownHeatExchangerReturnValvesTestingeitherofthesevalvesduringplantoperationwouldresultinanunbalancedflowconditionintheaffectedCCWtrainanddecreasedflowtoessentialequipment.Thiscouldresultincomponentdamageoranundesirableplanttransient.V-27101andV-27102Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuilding,whichisimpracticalduringplantoperation.FCV-25-1thruFCV-25-6PrimaryContainmentPurgeandVentValvesThesevalvesare.administrativelymaintainedintheclosedpositionatalltimeswhentheplantisoperatinginModes1,2or3thustheyarenotrequiredtooperate(close)duringoperationalperiods.Duetothelargesizeofthesevalvesandthepotentialfordamageasaresultoffrequentcycling,itisnotprudenttooperatethemmorethanisabsolutelynecessary.V-25-20andV-25-21ContainmentVacuumBreakersThesevalvescanonlybeexercisedmanuallyrequiringdirectaccesstoeachvalve.Sincethesevalvesarelocatedwithinthecontainmentbuilding,accessislimitedandnotroutinelypractical.E-7 p'r | |||
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| ML17228B017 | |
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| Site: | Saint Lucie  |
| Issue date: | 01/06/1995 |
| From: | FLORIDA POWER & LIGHT CO. |
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Text
REVISION501/6/95FLORIDAPOWERandLIGHTCOMPANYNUCLEARENERGYSERVICES700UniverseBoulevardJunoBeach,Florida33408SECOND'TEN-YEARINSERVICEINSPECTIONINTERVALINSERVICETESTINGPROGRAMFORPUMPSANDVALVESST,LUCIENUCLEARPOWERPLANTUNITNO.1NRCDOCKETNUMBER:DOCUMENTNUMBER:ST.LUCIEPLANTREVIEWSANDAPPROVALS:PREPAREDBY:APPROVEDBY:SPTISTENGINEERPSEST&CODESUPERVISORDATE:DATE:~9502i50077950208PDRADOCK05000335PPDR REVISION501/6/95TableofContentsTableofContentsRecordofRevisions1.01.1IntroductionISTProgramTestingRequirementGuidelines2.0ApplicableDocuments83.03.13.23.33.43~5InserviceTestingProgramForPumpsCodeComplianceAllowableRangesofTestQuantitiesTestingIntervalsPumpProgramTableReliefRequestsforPumpTesting999910104.24'4.44.54.6InserviceTestingProgramForValvesCodeComplianceTestingIntervalsStrokeTimeAcceptanceCriteriaCheckValveTestingValveProgramTableReliefRequestsForValveTesting11111111111212ABCDEPumpProgramTablesPumpProgramRequestsForReliefValveProgramTablesValveProgramRequestsForReliefColdShutdownJustifications 0
REVISION5'1/6/95RECORDOFREVISIONSREVISIONHUHBIKDESCRIPTIONOFREVISIONDATEBRZIS1Z.InitialIssueSecond10-yearProgramRevisedProgramperNRCGenericLetter89-04RevisedPrograminresponsetoNRCLetterdtdOctober17,1990RevisedProgramtoincludethelatestupdatesandtoclarifyseveralreliefrequestsRevisedPrograminresponsetoNRCLettersdtdAugust5,1994,andSeptember27,1994,andtoreviseVR-12andVR-13.3/21/858/11/8712/12/899/1/911/14/941/6/95 REVISION501/6/95INSERVICETESTING(IST)PROGRAMPLANST.LUCIEUNIT
11.0INTRODUCTION
Revision5oftheSt.LucieUnit1ASMEInserviceInspection(IST)Programwillbeineffectthroughtheendofthesecond120-month(10-year)intervalunlessrevisedandreissuedforreaso'nsotherthantheroutineupdaterequiredatthestartofthethirdintervalper10CFR50.55a(g).Thesecondinspectionintervalisdefinedasfollows:February11,1988February10,1998ThisdocumentoutlinestheISTProgramforSt.LuciePlant,Unit1,basedontherequirementsoftheASMEBoilerandPressureVesselCode(theCode),SectionXI,1983Editionthroughsummer1983Addenda.Referencesinthisdocumentto"IWP"or"IWV"correspondtoSubsectionsIWPandIWV,respectively,oftheASMESectionXI,1983Edition,unlessotherwisenoted.TheISTprogramincorporatestherequirementsofASME/ANSIOM-1987,Part1,"RequirementsforInservicePerformanceTestingofNuclearPowerPlantPressureReliefDevices"forthetestingofsafetyandreliefvalves.TheuseofASME/ANSIOM-1987,Part1requirementsasanalternativetoASMESectionXI,1983Edition,SubsectionIWV-3510requirementswasapprovedbytheNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.TheinservicetestingrequirementsidentifiedinthisPlanwerepreparedtoverifytheoperationalreadinessofpumpsandvalveswhichhaveaspecificfunctioninmitigatingtheconsequencesofanaccidentorinbringingthereactortoasafeshutdown.Inthisregard,thegeneralrequirementsofParagraphsIWP-1100andIWV-1100formthefollowingbasicscopedocumentasitappliestoISIClass1,2,and3.Specificallycomponentstobeincludedare:
REVISION501/6/95Centrifugalandpositivedisplacementpumpsthatarerequiredtoperformaspecificfunctioninshuttingdownthereactororinmitigatingtheconsequencesofanaccidentandthatareprovidedwithanemergencypowersource,andValves(andtheiractuatingandpositionindicatingsystems)whicharerequiredtoperformaspecificfunctioninshuttingdownthereactortothecoldshutdownconditionorinmitigatingtheconsequencesofanaccident.ThegeneralCoderequirementswereappliedtoSt.LucieUnit1usingasystematicapproachbyfirstreviewingthefunctionofeachoftheplantsystemsastheyrelatetoalimitednumberofboundingaccidentscenarios.Thisrevieweliminatedsystems(andassociatedcomponents)thatclearlydonotfitthebasicCodedefinitionsincludingthatofISIboundaryclassification.Next,aseriesofrulesorguidelinesweredevelopedthatestablishedthecriteriatobeusedduringthereviewoftheremainingsystemsandcomponents.Theserulesestablishthepoliciesandassumptionsthatwereappliedtotheforegoinganalysistoensureconsistency.Eachoftheseareoutlinedbelow.From"thispoint,inaseriesofsteps,eachoftheindividual,componentsineachoftheremainingsignificantsafetysystems(andsupportingsystems)wereevaluatedwithrespecttothefunctionofeachcomponentandtheneedforitsoperabilityasitrelatestothescopeofSectionXI.Thesestepsincluded:Areviewofflowdiagramsofeachsystemandidentificationofanycomponents(pumpsorvalves)that"could"potentiallybeincludedintheISTProgramscope.Basedonthereviewer'sexperience,valvesusedformaintenanceisolation,vents,drains,etc.wereexcluded.Typically,allpumps,power-operatedvalves,checkvalves,andsafetyvalvesremainedinthepopulationdesignatedforfurtherevaluations2.Eachsystemwasbrokendownbycomponentand,basedongeneralsystemoperationalrequirements,anarrativedescriptionofeachcomponent'ssafetyfunction(s)duringtheproposedscenarioswasdrafted.
REVISION501/6/953.Sequentially,plantdocumentsthatreferordiscusssafety-relatedcomponentorsystemfunctionswerereviewedindetailandinformationfromthesedocumentswascomparedtothedraftsdevelopedintheabovestep2.Whereappropriate,correctionsandreferenceswereappliedtotheindividualnarratives.Documentsreviewedincludedthefollowing:a~b.C.d.e.f.g.h.UpdatedFinalSafetyAnalysisReportTechnicalSpecificationsPlantSystemDescriptions(Training)DocumentsSpecialanalysesCommitmentcorrespondencePlantOperatingProceduresEmergencyOperatingProceduresAppendixJLeakrateTestProgram4.Basedonthefinalizedcomponentsafetyfunctionevaluationderivedfromthedocumentreviewandthecorrectednarratives,theISTProgramtestingrequirementswerethenestablishedbyapplyingtheguidelineslistedinSection1.1toeachone.5.Thefunctionaldescriptionofthesystemcomponentsweresubjectedtoacomprehensivereviewbyknowledgeableplantpersonneltoconfirmtheaccuracyonthedocument.
REVISION501/6/951.1ISTPROGRAMTESTINGREQUIREMENTGUIDELINESThefollowingguidelinesaresetforthforevaluationofsystemcomponents(pumpsandvalves)withrespecttotheirinclusionintheSt.LucieUnit1ISTProgramandtowhatextenttestingwillbeperformed.Wheremultiplecomponentsarecapableofperformingthesameequivalentandredundantspecifiedfunction(eg.multiplevalvesclosinginseries)andwherethecomponentsarenotsuppliedbyalternateandredundantpowersupplies,onlyoneneedbeincludedintheandnotsimplyhavethecapabilityofperformance.Thisexemptiononlyapplieswherelicensingdocuments~~..takecreditforthedesignedredundancy.Componentsperformingredundantfunctionshallbeincludedinthetestingprogramif,intheprocessofanalysisorlicensingjustification,theyarereliedupontobeoperable.2.TheSt.LucieUnit1FUSARandrelateddesignbasisdocumentsshallbetheprimaryreferencesfordeterminingwhichcomponentsarerequiredtoperformspecifiedfunctionsrelatedtothespectrumofpredicatedaccidents.Althoughseveralotherplantsourcedocuments(Tech.Specs.andEOP's)identifyvariouscomponentsthatmaybeimportanttoplantsafetyoraretobeoperatedinconjunctionwithrecoveryfromanaccident,unlessspecificcreditistakenintheplantsafetyanalysis(orisimpliedintheanalysis)forapumporvalve,thecomponentneednotbeincludedintheISTprogram.TheexceptionstothisarethosecaseswheretheNRCimposestestrequirementsattheirdiscretion.3.Valvesinstalledprimarilyforthepurposeofprovidingconvenientoperationalflexibility(eg.systemcross-connects)andarenotrequiredtooperateassumingthatthedesignatedfirst-linesystemsandcomponentsoperatesatisfactorily,neednotbeincludedintheISTProgram.Thisdoesnotexcludeactivevalvesthatcouldbecalleduponasaresultofoptionalsystemlineupsexistingpriortotheinitiationofanaccident.
REVISION501/6/95Valvesthatareactuatedasaresultofasafetysystemautomaticresponseshallbe'ncludedintheISTProgramtotheextentthatthetestingshallverifyvalveoperationrequiredasaresultofthesafetysysteminput.ThisappliesonlyifvalvemovementisrequiredtosupportthosefunctionsrequiredasspecifiedbytheCode.ThisrequirementextendsonlytotestingdefinedbytheCodeandisnotintendedtoimplytheneedforverifyingavalve'sresponsetoautomaticlogicsystemoutput.Valveswhosesolefunctionistoprovidesystemorcomponent'redundancyrelatedtofailureofpassivecomponentsneednotbeincludedifasetofalloftheactivecomponents(pumpsandvalves)neededtofulfillthespecifiedsystem(train)functionaretested-doubleorunrelatedsimultaneousfailuresneednotbeassumed.Insomecaseswhereprotectionofcriticalsystemsfrompassivefailuresisacommitment,thencomponentsareincludedinthetestingprogram.Systemsafety/reliefvalvesshallbeincludedwherethefunctionofthevalveistoprovideoverpressureprotection.AllvalvesincludedintheSt.LucieUnit1leakratetestingprogramcomplyingwith10CFR50,AppendixJshallbeincludedintheISTProgramasCategoryAvalves.Allvalvesdesignatedashigh-lowpressureinterfacevalves(pressureisolationvalves)shallbeincludedintheISTProgramasCategoryAvalves.AnyactiveCategoryAvalveshallbedesignatedfortesting(exercising)totheclose'ddirection.Whenavalve'snormalpositionduringoperationisitspositionrequiredtoperformitsdesignatedsafetyfunctionandvalvemovementmayberequiredduetoplantevolutionsorpossiblerepositioningduringaccidentresponseorrecoveryoperations,thenperiodicexercisingpertheCodeisrequired(ie.thevalvecannotbeconsideredpassive).
REVISION501/6/95Whereanair-operatedvalveisprovidedwithasimpleair-pilotvalve,thepilotvalveneednotbespecificallyincludedintheISTProgramprovidedthatthetestingperformedonthemainvalveverifiestheproperoperationofthepilotvalve.ControlvalvesarespecificallyexcludedfromtestingperIWV-1200(a);however,ifacontrolvalvemustchangepositiontosupportasafety-relatedfunctionandithasafail-safeposition,then,itmustbeincludedintheISTProgramandtestedtotheextentpractical.Steamturbinegovernorvalvesareconsideredtobeanintegralpartoftheturbineand,assuch,arenotincludedintheISTProgram.Checkvalvesareincludedwhereavalveservesastheonlyeffectiveboundarybetweenpipingassociatedwithanecessarysafetyfunctionandnon-safetygrade(non-seismic)piping.Failureofpassivesystemcomponentsisassumedonlyfornon-safetygradesystems.Whereavalveperformsasafetyfunctioninbothdirections(openandclosed)exercisinginbothdirectionsisrequired.Forthesepower-operatedvalves,stroketimemeasurementsinbothdirectionswouldberequired.Pumpsandvalveswhoseonlysafetyfunctionispredicatedonplantshutdownandrecoveryfromafirepercommitmentmadeasaresulton10CFR50,AppendixRarenotincludedintheISTProgram.PumpsandvalvesthatarenotcategorizedasISIClass1,2,or3neednotbeincludedintheISTProgram.CheckvalvesthathaveiasafetyfunctiontocloseshouldbeevaluatedwithrespecttocategorizationasCategoryA/CversusCwithrespecttothefollowingissues:Whethertheflowrequirementsforconnectedsystemscanbeachievedwiththemaximumpossibleleakagethroughthecheckvalve.Theeffectontheperformanceofothercomponentsandsystemsduetothereducedflowresultingfromtheleakage.
REVISION501/6/95Theconsequencesoflossoffluidfromthesystem.Theeffectthatbackflowthroughavalvemayhaveonpipingandcomponents,suchas-theeffectofhightemperatureandthermalstresses.Theradiologicalexposuretoplantpersonnelandthepubliccausedbytheleak.
REVISION501/6/952.0APPLICABLEDOCUMENTSThisProgramPlanwasdevelopedpertherequirementsandguidanceprovidedbythefollowingdocuments:2.12.22.32.42.52.62.72.82.92.102.112'22.132.142.152.162.172.182.192.20Title10,CodeofFederalRegulations,Part50NRCRegulatoryGuides-Division1StandardReviewPlan3.9.6,"InserviceTestingofPumpsandValvesFinalSafetyAnalysisReport,St.LucieUnit1St.LuciePlantUnit1TechnicalSpecification.ASMEBoilerandPressureVesselCode,SectionXI,1983EditionandAddendathroughSummer,1983.NRCGenericLetter89-04,"GuidanceonDevelopingAcceptableInserviceTestingPrograms"MinutesofthePublicMeetingsonGenericLetter89-04St.LucieUnit1-InterimReliefFromtheInserviceTestingProgramforPumpsandValvesSupplementtoMinutesofthePublicMeetingsonGenericLetter89-04byJ.G.Partlow,26September1991RequestforIndustry/NRC-AcceptedInterpretationon"Practical"asAppliedbyASMECodeSectionXI,IWV-3412(a)byMartinJ.Virgilio,AssistantDirectorforRegionsIVandV.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.ASMEBoilerandPressureVesselCode,SectionXI,1989Edition.ASME/ANSIOM-1987,Part1,"RequirementsforInservicePerformanceTestingofNuclearPowerPlantPressureReliefDevices".NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary29,1993.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.ASME/ANSIOM-1987,Part6,"InserviceTestingofPumpsinLight-WaterReactorPowerPlants".ASME/ANSIOM-1987,Part10,'InserviceTestingofValvesinLight-WaterReactorPowerPlants".NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedAugust12,1994.NRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.8 REVISION501/6/953.0INSERVICETESTINGPROGRAMFORPUMPS3.1CodeComplianceThisISTProgramforpumpsmeetstherequirementsofSubsectionIWPoftheCodeandanyinterpretationsoradditionalrequirementsimposedbyGenericLetter89-04.Wheretheserequirementshavebeendeterminedtobeimpractical,conformancewouldcauseunreasonablehardshipwithoutanycompensatingincreaseinsafety,oranalternativetestprovidesanacceptablelevelofqualityandsafety,relieffromCoderequirementsisrequestedpursuanttotherequirementsof10CFR50.55a(g)(iii)andGenericLetter89-04.3.2AllowableRangesofTestQuantitiesTheallowablerangesfortestparametersasspecifiedinTableIWP-3100-2willbeusedforallmeasurementsofpressure,flow,andvibrationexceptasprovidedforinspecificreliefrequests.InsomecasestheperformanceofapumpmaybeadequatetofulfillitssafetyfunctioneventhoughtheremaybeavalueofanoperatingparameterthatfallsoutsidetheallowablerangesassetforthinTableIWP-3100-2.Shouldsuchasituationarise,anexpandedallowablemaybedetermined,onacase-by-casebasis,inaccordancewithIWP-3210andASMECodeInterpretationXI 79-19.3.3TestingIntervalsThetestfrequencyforpumpsincludedintheProgramwillbeassetforthinIWP-3400andrelatedreliefrequests.Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit1TechnicalSpecificationstoprovideforoperationalflexibility.
REVISION501/6/953.4PumpProgramTableAppendixAliststhosepumpsincludedintheISTProgramwithreferencestoparameterstobemeasuredandapplicablerequestsforrelief.3.5ReliefRequestsforPumpTestingAppendixBincludesallreliefrequestsrelatedtopumptesting.10 REVISION501/6/954.0INSERVICETESTINGPROGRAMFORVALVES4.1CodeComplianceThisISTProgramforvalvesmeetstherequirementsofSubsectionIWVoftheCodeandanyinterpretationsoradditionalrequirementsimposedbyGenericLetter89-04.Wheretheserequirementshavebeendeterminedtobeimpractical,conformancewouldcauseunreasonablehardshipwithoutanycompensatingincreaseinsafety,oranalternativetestprovidesanacceptablelevelofqualityandsafety,relieffromCoderequirementsisrequestedpursuanttotherequirementsof10CFR50.55a(g)(iii)andGenericLetter89-04.4.2TestingIntervalsThetestfrequencyforvalvesincludedintheProgramwillbeassetforthinIWV3400andrelatedreliefrequests.Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit1TechnicalSpecificationstoprovideforoperationalflexibility.Wherequarterlytestingofvalvesisimpractical,orotherwiseundesirable,testingmaybeperformedduringcoldshutdownperiodsaspermittedbyIWV-3412(a).JustificationsforthisdeferredtestingareprovidedinAppendixE.4.3StrokeTimeAcceptanceCriteriaWhenrequired,theacceptancecriteriaforthestroketimesofpower-operatedvalveswillbeassetforthinGenericLetter89-04.4.4CheckValveTestingFull-strokeexercisingofcheckvalvestotheopenpositionusingsystemflowrequiresthatatestbeperformedwherebythepredictedfullaccidentconditionflowratethroughthevalvebeverified,andmeasured,.AnydeviationtothisrequirementmustsatisfytherequirementsofGenericLetter89-.04,Positionl.11 REVISION501/6/954.5ValveProgramTableAppendixCliststhosevalvesincludedintheISTProgramwithreferencestorequiredtesting,respectivetestintervals,andapplicablerequestsforrelief.4.6ReliefRequestsforValveTestingAppendixDincludesallreliefrequestsrelatedtovalvetesting.12 AppendixAPumpProgramTables
FloridaPower&LightCompanyINSERVICETESTING-PUMPTABLESSt.LucieNuclearPlant-Unit1REVISION'DATE1/6/95PAGE:2PUMPNUMBERNumericaldesignatorindicatedontherespectiveflowdiagram.DESCRIPTIONGenericname/functionofthepump.CLISIClassificationpertheassociatedISIboundarydrawing(s)COORDCorrespondstotheflowdiagramcoordinatesofthepump.TestParametersThetableindicatesbya"Y"(yes)or"N"(no)thatthespecificparameterismeasured,evaluated,andrecordedpertheapplicableCoderequirement.Ifa"N"isindicated,theassociatedreliefrequestnumberisalsonotedinthesamecolumn.PR-XXWhereindicatedthisreferstothespecificreliefrequest(SeeAppendixB)relatedtoanydeviationregardingthemeasurementoranalysisofaparameter.
AppendixBPumpProgramReliefRequests RELIEFREQUESTNO.PR-1REVISION51/6/95AllpumpsintheProgramThetemperatureofallcentrifugalpumpbearingsoutsidethemainflowpathandofthemainshaftbearingsofreciprocatingpumpsshallbemeasuredatpointsselectedtoberesponsivetochangesinthetemperatureofthebearings.(IWP-3300,4310)Thedataassociatedwithbearingtemperaturestakenatone-yearintervalsprovideslittlestatisticalbasisfordeterminingtheincrementaldegradationofabearingoranymeaningfultrendinginformationorcorrelation.Inmanycasesthepumpbearingsarewater-cooledandthus,bear'ingtemperatureisafunctionofthetemperatureofthecoolingmedium,whichcanvaryconsiderably.Vibrationmeasurementsareasignificantlymorereliableindicationofpumpbearingdegradationthanaretemperaturemeasurements.Allpumpsintheprogramaresubjectedto'ibrationmeasurementsinaccordancewithIWP-4500.Althoughexcessivebearingtemperatureisanindicationofanimminentorexistingbearingfailure,itishighlyunlikelythatsuchaconditionwouldgounnoticedduringroutinesurveillancetestingsinceitwouldmanifestitselfinotherobviousindicationssuchasaudiblenoise,unusualvibration,increasedmotorcurrent,etc.Anypotentialgainfromtakingbearingmeasurements,whichinmostcaseswouldbedonelocallyusingportableinstrumentation,cannotoffsetthecostintermsofdilutionofoperatoreffort,distractionofoperatorsfromotherprimaryduties,excessiveoperatingperiodsforstandbypumpsespeciallyunderminimumflowconditions,andunnecessarypersonnelradiationexposure.Basedonthereasonssimilartothosesetforthabove,theASMEdeletedtherequirementforbearingtemperaturemeasurementsinASMEOMCode,SubsectionISTB,therevisedversionoftheCodeforpumptesting.B-1 RELIEFREQUESTNO.PR-1(cont.)REVISION51/6/95NoneThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary1,1993.B-2 RELIEFREQUESTNO.PR-2REVISION51/6/95VariousThefull-scalerangeofeachinstrumentshallbethreetimesthereferencevalueorless.(IWP-4120)TableIWP-4110-1requirestheaccuracyofinstrumentsusedtomeasurespeedtobeequaltoor.betterthan+2percentforspeed,basedonthefullscalereadingoftheinstrument.Thismeansthattheaccuracyofthemeasurementcanvaryasmuchas+6percent,assumingtherangeoftheinstrumentsextendedtotheallowedmaximum.TheseISTpumpparametersareoftenmeasuredwithportabletestinstrumentswherecommerciallyavailableinstrumentsdonotnecessarilyconformtotheCoderequirementsforrange.Inthesecases,highqualitycalibratedinstrumentswillbeusedwherethe"reading"accuracyisatleastequaltotheCode-requirementforfull-scaleaccuracy.ThiswillensurethatthemeasurementsarealwaysmoreaccuratethantheaccuracyasdeterminedbycombiningtherequirementsofTableIWP-4110-1andParagraphIWP-4120.Wheneverportableinstrumentsareusedformeasuringpumpspeed,theinstrumentswillbesuchthatthe"reading"accuracyis+2percent.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.B-3 RELIEFREQUESTNO.PR-3REVISION51/6/95WITHDRAWNbyRevisionf4B-4 RELIEFREQUESTNO.PR-4REVISION51/6/95AuxiliaryFeedwater(AFW)Pumps1Athru1C(8770G080'h3)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1)ThereareonlytwopracticalflowpathsavailableforperforminginservicetestingoftheAFWPumps.Theseincludetheprimaryflowpathintothemainfeedsupplylinesandthencetothesteamgeneratorandtheminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstothecondensatestoragetank.Theformerisprovidedwithflowratemeasuringinstrumentationhoweverthemini-recirclineisafixedresistancecircuitwithnoflowinstrumentation.Pumpingfromtheauxiliaryfeedwatersystemintothesteamgeneratorsduringplanthotoperationisimpracticalandundesirableforthefollowingreasons:Duringauxiliaryfeedwaterinjectionviathemainfeedwaterlineswhiletheplantisoperatingatpower,alargetemperaturedifferential(approximately375deg-F)couldexistthatwouldresultinsignificantthermalshock'andfatiguecyclingofthefeedwaterpipingandsteamgeneratornozzles~Basedontheexpecteddurationofthetestingandtheflowrateofthepumps(150-200gpm),itisexpectedthatthecooldownofthesteamgeneratorwouldinducecooldownandcontractionofthereactorcoolantsystemresultinginundesirablereactivityvariationsandpowerfluctuations.B-5 RELIEFREQUESTNO.PR-4(cont.)REVISION51/6/95DuringquarterlytestingoftheAFWpumpswhilethepumpsareoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbeme'asuredandevaluatedperIWP-3200andIWP-6000.Duringtestingperformedatcoldshutdown,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.Testingduringcoldshutdownswillbeonafrequencydeterminedbyintervalsbetweenshutdowns'asfollows:Forintervalsof3monthsorlonger-eachshutdown.Forintervalsoflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.ThisalternatetestingagreeswiththerequirementsofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal.B-6 RELIEFREQUESTNO.PR-5REVISION51/6/95BoricAcidMakeup(BAM)Pumps1Aand1B(8770-G-078,Sh121)Eachinservicetestshallincludethe'measurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest(TableIWP-3100-1)TherearethreepracticalflowpathsavailableforperforminginservicetestingoftheBAMPumps.Theseincludetheprimaryflowpathintothechargingpumpsuctionheader,arecirculationlineleadingbacktotherefuelingwatertank,andtheminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstotheBAMTanks.Noneoftheseflowpathsistotallysatisfactoryforthefollowingreasons:*OperatingtheBAMPumpsdischargingintothechargingpumpsuctionheaderrequirestheintroduction-ofhighlyconcentratedboricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ThiswouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.Alargeenoughboronadditionwouldresultinanunscheduledplanttripandapossibleinitiationof-SafetyInjectionSystems.*Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-borationoftheRCS.ThewastemanagementsystemwouldbeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireprocessingtodecreaseitsboronconcentration.B-7 RELIEFREQUESTNO.PR-5(cont.)REVISION51/6/95ThesecondcircuitrecirculateswatertotheRefuelingWaterTank(RWT)ortheVolumeControlTank(VCT).DuringnormalplantoperationatpoweritisundesirabletopumptotheRWTanddepletetheBAMTankinventory.OneofthetwoBAMTanksismaintainedatTech.Spec.levelwhiletheotherisusedasrequiredforplantoperation.TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintainedatalevelnearthetopofthetank.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatabilitywouldbequestionable.Theminimum-flowrecirculationflowpathisafixedresistancecircuitofoneinchpipecontainingaflowlimitingor'ifice.Noflowratemeasuringinstrumentationisinstalledinthisline.Pumpingboricacid.fromtanktotankwouldbepossiblebuttheflowrateswouldbesmall,limitingpumpoperationtothehighheadsectionofthepumpcurve.Inaddition,oneofthetwoBAMTanksismaintainedatTech.Spec.levelwhiletheotherisusedasrequiredfornormalplantoperation.TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintainedatalevelnearthetopofthetank.Thisnarrowbandlimitstheamountthatcanbepumpedtoitorfromittoonlyafewhundredgallons.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatabilitywouldbequestionable.B-8 RELIEFREQUESTNO.PR-5(cont.)REVISION51/6/95DuringquarterlytestingoftheBAMpumps,whilethepumps.areoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbemeasuredandevaluatedperIWP-3200andIWP-6000.Duringtestingperformedateachreactorrefuelingoutage,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9andwasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.B-9 RELIEFREQUESTNO.PR-6REVISION51/6/95ContainmentSpray(CS)Pumps1Aand1B(8770-G-088)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpflowrateshallbemeasuredduringthetest.(TableIWP-'3100-1)TherearetwopracticalflowpathsavailableforperforminginservicetestingoftheCSPumps.TheseincludeonethatpumpsboratedwaterfromtheRWTtotheRCSviathelow-pressureinjectionheader.Theotherisminimum-flowrecirculation(mini-recircandbypasstestloop)whichreturnstotheRWTThefirstwouldrequiremodifyingtheshutdowncoolinglineupwhileincoldshutdown;however,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.Thus,theonlypracticaltimefortestingthesepumpsviathisflowpathisduringrefuelingoutageswhenwaterfromtheRWTisusedtofilltherefuelingcavity.Theminimum-flowrecirculationflowpathisafixedresistancecircuitcontainingaflowlimitingorificewithnoflowratemeasuringinstrumentationinstalled.DuringquarterlytestingoftheCSpumpswhilethepumpsareoperatingthroughthefixed-resistancemini-recircline,pumpdifferentialpressureandvibrationwillbemeasuredandevaluatedperIWP-3200andIWP-6000.
RELIEFREQUESTNO.PR-6(cont.)REVISION51/6/95Duringtestingperformedduringeachreactorrefueling,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththerequirementsofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal.
RELIEFREQUESTNO.PR-7REVISION51/6/95WITHDRAWNbyRevision$4B-12 RELIEFREQUESTNO.PR-8REVISION51/6/95BoricAcidMakeupPumpslAand'1B(8770-G-078,Sh121EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTable-IWP-3100-1exceptbearingtemperatures,whichshallbemeasuredduringatleastoneinservicetesteachyear.(IWP-3300)Thesysteminstallationsdonotprovideanymechanismfor'directlymeasuringpumpsuctionpressuresbyusingasuctiongage.Ameasureofpumpsuctionpressurecan,however,bedeterminedbycalculationusingtheheightofliquidintheboricacidtanks(BAMtanks).Sincethereisessentiallyafixedresistancesbetweenthetanksandthepumpsthiswillprovideaconsistentvalueforsuctionpressures.TheBAMtanklevelsarenotexpectedtovaryduringtheBAMpumptests.TheBAMpumpdischargeisdirectedbacktoitsstoragetankusingthemini-flowrecirculationlines.What.boricacidistakenoutthroughthesuctionlineisimmediatelyreplacedthroughthemini-flowrecirculationlinedischargeintothesameBAMtank.Thetanklevelsandassociatedcalculationswillonlybetakenonceduringeach-testinsteadofpriortopumpoperationandduringoperationasrequiredbyTableWP-3100-1.TheBoricAcidMakeupPumpsuctionpressureswillbecalculatedbasedontheheightofliquidintheassociatedtankonceduringeachinservicetest.Subsequently,thesecalculatedvalueswillbeusedtodeterminepumpdifferentialpressuresforevaluationofpumpparameters.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.
RELIEFREQUESTNO.PR-9REVISION51/6/95HighPressureSafetyInjection(HPSI)Pumps1Aand1B.(8770-G-078,Sh130)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)DuringquarterlytestingoftheHPSIPumps,thepumpscannotdevelopsufficientdischargepressuretoovercomeRCSpressureandallowflowthroughthesafetyinjectionlineflowmeasuringinstruments.FlowisroutedthroughaminimumflowtestlineleadingtotheRWT.Thislinehasnoinstalledflowratemeasuringinstrumentation.andmeasuringflowrateduringquarterlytestingisnotpractical.Duringcoldshutdownconditions,fullflowoperationoftheHPSIpumpstotheRCSisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.NRCGenericLetter89-04,Position9,allowseliminationofminimumflowtestlineflowratemeasurementsprovidinginservicetestsareperformedduringcoldshutdownsorrefuelingunderfullorsubstantialflowconditionswherepumpflowrateisrecordedandevaluated.B-14 REVISION51/6/95RELIEFREQUESTNO.PR-9(cont.)DuringquarterlytestingoftheHPSIPumps,pumpdifferentialpressureandvibrationwillberecordedperIWP-3200andIWP-6000.Duringtestingperformedateachreactorrefueling,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal'-15 RELIEFREQUESTNO.PR-10REVISION51/6/95LowPressureSafetyInjection(LPSI)PumpslAand1B(8770-G-078,Sh130)EachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)DuringquarterlytestingoftheLPSIPumps,thepumpscannotdevelopsufficientdischargepressuretoovercomeRCSprcssure'lowisroutedthroughaminimumflowtestlineleadingtotheRWT.Thislinehasnoinstalledflowratemeasuringinstrumentationandmeasuringflowrateduringquarterlytestingisnotpractical.NRCGenericLetter89-04,Position9,allowseliminationofminimumflowtestlineflowratemeasurementsprovidinginservicetestsareperformedduringcoldshutdownsorrefuelingunderfullorsubstantialflowconditionswherepumpflowrateisrecordedandevaluated.DuringquarterlytestingoftheLPSIPumps,pumpdifferentialpressureandvibrationwillberecordedperIWP-3200andIWP-6000~B-16 RELIEFREQUESTNOPR-10(cont.)REVISION51/6/95Duringtestingperformedatcoldshutdown,pumpdifferentialpressure,flowrate,andvibrationwillberecordedperIWP-3200andIWP-6000.Testingduringcoldshutdownswillbeonafrequencydeterminedbyintervalsbetweenshutdownsasfollows:Forintervalsof3monthsorlonger-eachshutdown.Forintervalsoflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position9and,assuch,isconsideredtobeapproveduponsubmittal.B-17 RELIEFREQUESTNO.PR-11REVISION51/6/95IntakeCoolingWaterPumps1A,1Band1CEachinservicetestshallincludethemeasurementandobservationofallquantitiesinTableIWP-3100-1.(IWP-3300)Pumpinletpressureshallbemeasuredbeforestartingapumpandduringthetest.(TableIWP-3100-1)Thepumpslistedaboveareverticallineshaftpumpssubmergedintheintakestructurewithnopracticalmeansofmeasuringtheinletpressureofthepump.Theinletpressure,however,canbedeterminedbycalculationusing,asinput,themeasuredheightofwaterabovethepump'sinletasmeasuredattheintakestructure.Duringeachinservicetest,thewaterlevelintheintakepitremainsrelativelyconstant,thusonlyonemeasurementoflevelandtheassociatedsuctionpressurecalculationneedbeperformed.Duringtestingofthesepumps,onevalueofinletpressurewillbecalculatedbasedupontheintakewaterlevelattheintakestructure.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.
RELIEFREQUESTNO.PR-12REVISION51/6/95ReactorCoolantChargingPumps1A,1B,and1CThefrequencyresponserangeofthereadoutsystem(forinstrumentusedtomeasurevibrationamplitude)shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotationalspeed.,(IWP-4520(b))Thereactorcoolantchargingpumpsoperateatapproximately210-215rpmwhichequatestoarotationalfrequencyof3.50Hz.Theone-halfminimumspeedfrequencyresponserequiredforthevibrationinstrumentationcorrelatesto1.75Hz(105cpm).ThevibrationinstrumentationpresentlyinuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integratorfrequencyresponseisessentiallyflatdownto120cpm(cyclesperminute)wherethedisplayedoutputoftheinstrumentslightlyincreasestoapproximately+1dBat100cpm.The-3dBfrequencyresponseisreachedatapproximately54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequencyprobenominallyrateddownto270cpm(-3dB).Thisisonlyslightlyhigherthantheexpectedrotational(1X)speedofthechargingpump(205210cpm).The1X(205cpm.)vibrationfrequencycomponentswillbesomewhatattenuatedbytheprobes,butnotcutoff.Overallvibrationlevelswouldstillshowanincreasingvalue,ifsomeproblemdevelopedwhosecharacteristicfrequencywas1Xrunningspeed.Therearevirtuallynomechanicaldegradationswhereonlyasub-synchronousvibrationcomponentwoulddeveloponthechargingpumps.Forexample:a.Oilwhirl(0.38X-0.48X)isnotapplicabletoahorizontal,triplex,reciprocatingpump.b.Alightrub/impactcouldgenerate0.5X(102.5cpm)vibrationcomponents,butwouldalsousuallygenerateasequenceofintegerandhalfintegerrunningspeedcomponents.Aheavyrubgeneratesincreasedintegervaluesofmultiplerunningspeedcomponents,as REVISION51/6/95wellasprecessingthe1Xphasemeasurement.Ineithercasetheoverallvibrationlevelwouldstillshowanincreasefromboththeattenuatedsub-synchronousand1Xvibrationcomponentsaswellasthehigherharmonicvibrationcomponents.c.Loosenessinthepowertrainwouldlikelybeindicatedbyincreasing1Xand2Xvibrationcomponents.Thesesignalswouldbeslightlyattenuatedbutagainnotcomplete'lycutoff.Basedontheaboveinformation,itisourevaluationthatthepresentuseoftheBentlyNevada270cpmprobeswiththeportableTK-81instrumentiscapableofcollectingsufficientlyreliabledatatoidentifychangesfrombaselinereadingstoindicatepossibleproblemswiththepumps.Duringtestingofthesepumps,thevibrationinstrumentationusedwillbetheBentlyNevadamodelTK-81with270cpmprobesorequivalent.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedAugust5,1994.B-20 REVISION51/6/95RELIEFREQUESTNO.PR-13WITHDRAWNbyRevision$4B-21 AppendixCValveProgramTables FloridaPower&LightCompanyREVISION:5INSERVICETESTING-VALVETABLESDATE1/6/95St.LucieNuclearPlant-Unit1PAGE:1&ZilHK,VALVENUMBERTheplantalpha-numericaldesignatorforthesubjectvalveCOORDCLCATSIZETYPEA/PACT.TYPENORMPOS.REMINDFAILMODEThecoordinatelocationofthevalveonthedesignateddrawingTheISIClassificationofthevalveaspertherespectiveISIboundarydrawingsThevalvecategoryperParagraphIWV-2200Thevalve'snominalsizeininchesThevalvetypeTheactive(A)orpassive(P)determinationforthevalveperIWV-2100.Thevalveactuatortypeasfollows:Air-operatedDiaphragm-operatedElectricmotor-operatedManualvalvePiston-operatedSelf-actuatedSolenoid-operatedDesignatesthenormalpositionofthevalveduringplantoperationatpowerNotesifavalvehasremotepositionindicationIdentifiesthefailuremode(openorclosed)foravalve.FAIindicatesthevalvefails"asis".
FloridaPower&LightCompanyINSERVICETESTING-VALVETABLESSt.LucieNuclearPlant-Unit1REVISION:5DATE1/6/95PAGE:2Identifiesthetestrequi'rementsforavalveasfollows:CV/cCV/0CV/POECEEEOFSINSPPECPISLT-1SLT;2SRVCheckvalveexercisetoclosedpositionsCheckvalvefull-strokeexercisetoopenposition.Checkvalvepartial-strokeexercisetoopenposition.Exercisetoclosedposition.ForallcategoryAorBpower-operatedvalvesstroketimeswillbemeasuredunlessexcludedbyanassociatedreliefrequest.Exercisevalvetoverifyproperoperationandstrokingwithnostroketimemeasurements.Requiresobservationofsystemparametersorlocalobservationofvalveoperation.Exercisetoopenposition.ForallcategoryAorBpower-operatedvalvesstroketimeswillbemeasuredunlessexcludedbyanassociatedreliefrequest.FailsafetestDisassemblyandinspectionofcheckvalvesPartialclosureexerciseforpower-operatedvalvesPositionindicationverificationSeatleakratetestper'10CFR50,AppJSeatleakratetestforpressureisolationvalves.Setpointcheckforsafety/reliefvalves FloridaPower&LightCompanyINSERVICETESTING-VALVETABLESSt~LucieNuclearPlant-Unit1REVISION:5DATE1/6/95PAGE:3TESTFREQTherequiredtestintervalasfollows:QRCS2YRFSASPQuarterly(duringplantoperation)ColdshutdownasdefinedbyTechnicalSpecificationEvery2yearsEachreactorrefuelingoutage(cycle).Inthecasewherethisisdesignatedforsafety/reliefvalvesrefer,toTableWV-3510-1.Semi-annuallyOther(SeeapplicableRequestforRelief)RELIEFREQReferstothespecificreliefrequestassociatedwiththead)acenttestrequirement.(SeeAppendixD)
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit1REVISION:5DATE:I/6/95PAGE:32PIID:8770-G-088SYSTEM:CONTAINMENTSPRAYSYSTEHACT.NORMREHFAILTESTRELIEFVALVENUMBERCOORD.CICAT.SIZETYPEA/PTYPEPOS.INDMODEEXAMFREQREQ.REMARKSFCV-07-1AG-122B12.000GATEADOCYESFOEOQRFSQRPI2YFCV-07-1BH-122B12.000GATEADOCYESFOEOQRFSQRPI2YLCV-07-11AJ-112A2.000GLOBEADOCYESFCECFSPISLT-1QRQR2Y2YVR-5LCV-07-11BJ-122A2~000GLOBEADOCYESFCECFSPISLT-1QRQR2Y2YVR-5MV-07-1AE-32B24.000BUTFLYAHO0YESFAIECPIQR2YMV-07-1BE-22B24.000BUTFLYAMO0YESFAIECPIQR2YMV-07-2AK-122B24.000BUTFLYAMOCYESFAIEOPIQR2YMV-07-2BK-122B24.000BUTFLYAMOCYESFAIEOPIQR2YMV-07-3AG-132B12.000GATEAMOLOYESFAIECPIQR2YMV-07-3BH-132B12.000GATE.AHOLOYESFAIECPIQR2YSE-07-1AN-42B2.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-07-1BN-52B2~000GLOBEASOCYESFCECEOFSPIQRQRQR2Y
AppendixDValveProgramRequestsforRelief RELIEFREQUESTNO.VR-1REVISION51/06/95BXSZ~VariousAnyvalvestestedduringcoldshutdownconditions.VariousVariousValvesshallbeexercised...unlesssuchoperationisnotpracticalduringplantoperation.Ifonlylimitedoperationispracticalduringplantoperation,thevalveshallbepart-strokeexercisedduringplantoperationandfullstrokeexercisedduringcoldshutdowns.Fullstrokeexercisingduringcoldshutdownsforallvalvesnotfull-strokeexercisedduringplantoperationshallbeonafrequencydeterminedbytheintervalsbetweenshutdownsasfollows:Forintervalsof3monthsorlonger-exerciseduringeachshutdown.(IWV-3412,IWV-4315andIWV-3522)Inmanyinstancestestingofallvalvesdesignatedfortestingduringcoldshutdowncannotbecompletedduetothebrevityofanoutageorthelackofplantconditionsneededfortestingspecificvalves.IthasbeenthepolicyoftheNRCthatiftestingcommencesinareasonabletimeandreasonableeffortsaremadetotestallvalves,thenoutageextensionorsignificantchangesinplantconditionsarenotrequiredwhentheonlyreasonistoprovidetheopportunityforcompletionofvalvetesting.ASME/ANSIOM-1987,OperationandMaintenanceOfNuclearPowerPlants,Part10(Paragraphs4.2.1.2and4.3.2.2)recognizesthisissueandallowsdeferredtestingassetforthbelow.D-1 REVISION51/06/95Forthosevalvesdesignatedtobeexercisedortestedduringcoldshutdown,exercisingshallcommenceassoonaspracticalaftertheplantreachesastablecoldshutdownconditionasdefinedbytheapplicableTechnicalSpecificationbutnolaterthan48hoursafterreachingcoldshutdown.Ifanoutageissufficientlylongenoughtoprovidefortestingofallvalvesrequiredtobetestedduringthecoldshutdownperiod,thenthe48-hourrequirementneednotapplyifallvalvesaretestedduringtheoutage.Valvetestingneednotbeperformedmoreoftenthanonceeverythree(3)monthsexceptasprovidedforinIWV-3417(a).Completionofallvalvetestingduringacoldshutdownoutageisnotrequiredifthelengthoftheshutdownperiodisinsufficienttocompletealltesting.Testingnotcompletedpriortostartupmayberescheduledforthenextshutdowninasequencesuchthatthetestscheduledoesnotomitnorfavorcertainvalvesorgroupsofvalves.Forthepurposeofthisrequirement,theterm'coldshutdown'eferstotherespectiveconditionasnotedintheTechnicalSpecifications.Theprogramtablesidentifythosevalvestowhichcoldshutdowntestingapplies.RefertoAppendixEfordiscussionofthereasonsandjustificationforallowingcoldshutdownvs.quarterlytesting.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramRelief-RequestsdatedFebruary26,1992.D-2 SYGZEH'ELIEFREQUESTNO.VR-2REVISION51/06/95SafetyInjection/ResidualHeatRemoval(8770-G-078,Sh131)V-3113V-3114V-312'3V-3124V-3133V-3134V-3143V-3144V-3215V-3217V-3225V-3227V-3235V-3237V-3245V-3247A/C(CheckValves)Thesecheckvalvesopentoprovideforhigh-pressureandlow-pressuresafetyinjectiontotheRCS.Eachofthesevalvesisdesignatedasapressureisolationvalve(PIV)andprovidesisolationofsafeguardsystemsfromtheRCS.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Leaktestingofthesevalvesisprimarilyforthepurposeofconfirmingtheircapabilityofpreventingover-pressurizationandcatastrophicfailureofthesafetyinjectionpipingandcomponents.Inthisregard,specialleakageacceptancecriteriahasbeenestablishedandincludedintheSt.Lucie1TechnicalSpecifications(Table3.4.6-1)thataddressesthequestionofvalveintegrityinamoreappropriatemannerforthesevalves.SatisfyingboththeTechnicalSpecificationandtheCodeacceptancecriteriaisnotwarrantedandimplementationwouldbedifficultandconfusing.D-3
RELIEFREQUESTNO.VR-2(cont.)REVISION51/06/95TheleakagerateacceptancecriteriaforthesevalveswillbeestablishedpertheSt.LucieUnit1TechnicalSpecifications,Table3.4.6-1.Leakagerateslessthan1.0gpmareacceptable.2.Leakageratesgreaterthan1.0gpmbutlessthanorequalto5.0gpmareacceptableifthelatestmeasuredratehasnotexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.3.Leakageratesgreaterthan1.0gpm,butlessthanorequalto5.0gpm,areunacceptableifthelatestmeasuredrateexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.4.Leakageratesgreaterthan5.0gpmareunacceptable.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit'InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-4 RELIEFREQUESTNO.VR-3REVISION51/06/95VariousVariousVariousThisisagenericrequestforreliefIf,forpower-operatedvalves,anincreaseinstroketimeof50%ormoreforvalveswithfull-stroketimeslessthanorequalto10secondsisobserved,thetestfrequencyshallbeincreasedtoonceeachmonthuntilcorrectiveactionistaken,atwhichtimetheoriginaltestfrequencyshallberesumed(IWV-3417(a))Thestroketimemeasurementstakenduringtestingoffast-actingvalves(thoselessthan2seconds)aresubjecttoconsiderablevariationduetoconditionsunrelatedtothematerialconditionofthevalve(eg.testconditions,operatorreactiontime).InaccordancewithReference2.7,Position6,analternatemethodofevaluatingstroketimesi.sconsideredacceptable.D-5 REVISION51/06/95RELIEFREQUESTNO.VR-3(cont.)Thestroketimeevaluationforthosevalvesdesignatedintheinthetestingproceduresas"fast-acting"willnotaccountforsuccessiveincreasesofmeasuredstroketimeperIWV-3417(a)withthechangeintestfrequencyasrequired.Inlieuofthis,theassignedmaximumlimitingvalueofstroketimewillbeestablishedat2seconds.Uponexceedingthe2-secondlimit,avalvewillbedeclaredinoperableandcorrectiveactiontakeninaccordancewithIWV-3417(b).ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position6and,assuch,isconsideredtobeapproveduponsubmittal.D-6 RELIEFREQUESTNO.VR-4REVISION51/06/95WITHDRAWNbyRevisiong3D-7 RELIEFREQUESTNO.VR-5REVISION51/06/95PrimaryContainmentContainmentIsolationValvesperTableVR 1AorA/CThesevalvesareclosedtoprovidecontainmentisolation.CategoryAvalvesshallbeseatleaktestedandamaximumpermissibleleakagerateshallbespecified.IndividualvalveleakageratesshallbeevaluatedperIWV-3426andIWV-3427.(IWV-3426,IWV-3427,NRCGenericLetter89-04)Individualleakageratetestsareimpracticalin14casesduetotheconfigurationofthesystempipingandcomponents.Inthese14cases,theleakageratetestsmustbeperformedwiththetestvolumelocatedbetweenthetwovalveswhilethecombinedleakagerateismeasured.Ineachofthe14valvepairs(seeTableVR 1below),thetwovalvesareequalinsizeandtype,andtheleakagelimitisinproportiontotheirsize.Theleakagelimitsarecontrolledbyprocedureandareconservativesuchthatexcessiveleakagethroughanyindividualvalve,eventhesmallest,wouldbedetectedandtheappropriatecorrectiveactiontaken.AtSt.Lucie,thevalveleakrateacceptancecriteriaforcontainmentisolationvalvesisdeterminedbyapplyingafractionoftheaggregateallowableleakratetoeachvalvebasedontheratioofitsnominaldiametertothesumofthediametersofallcontainmentisolationvalvestestedintheProgram.Inthoseinstanceswhereseveralvalvesaretestedasagroup,thevalves'ndividualdiametersaresummedtoarriveatan"effective"sizeforthepenetrationandthat REVISION51/06/95RELIEFREQUESTNO.VR-5(cont.)numberisusedintheratiotothetotalforallvalvestoarriveatanacceptancecriteriaforthe"test."Inthosecaseswhereindividualvalvestestingisimpractical,valveswillbeleaktestedsimultaneouslyinmultiplevalvearrangementsandamaximumpermissibleleakageratewillbeappliedtoeachcombinationofvalves.TestresultsfromtestsofmultiplevalveswillbeevaluatedinaccordancewithIWV-3426andIWV-3427.810112324V-18794andV-18796FCV-25-4andFCV-25-5FCV-25-2andFCV-25-3HCV-14-1andHCV-14-7HCV-14-2andHCV-14-64142464752dV-3463andV-07009LCV-07-11AandLCV-07-11BV-07206andV-07189V-07170andV-07188V-00140andV-0014352e565758V-00139andV-00144V-25011andV-25-12V-25013andV-25-14V-25015andV-25-16ThisreliefrequestisapprovedbyNRCSafety,EvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-9 RELIEFREQUESTNO.VR-6REVISION51/06/95SXSZRL'hemicalandVolumeControl(8770-G-078Sh121)V-2177V-2190V-2191V-2177openstoprovideaflowpathforemergencyborationfromtheboricacidmakeuppumpstothesuctionofthechargingpumps.Likewise,V-2190openstoprovideaflowpathforemergencyborationviagravitydrainfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ValveV-2191openstoprovideaflowpathfromtherefuelingwatertank(RWT)tothesuctionofthechargingpumpsasanalternatesupplyofboratedwaterforboration.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Testingthesevalvesintheopendirectionrequirestheintroductionofhighlyconcentratedboricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.AlargeenoughboronadditioncouldresultinanunscheduledplanttripandapossibleinitiationoftheSafetyInjectionSystems.
RELIEFREQUESTNO.VR-6(cont.)REVISION51/06/95Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-borationoftheRCS.ThewastemanagementsystemwouldalsobeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireprocessingtodecreasetheboronconcentration.Sincetheboronconcentrationisnormallyincreasedtoalimitedextentforshutdownmarginpriortoreachingcoldshutdown,apartstrokeexerciseofthesevalvescouldbeperformedatthattime.AllofthecheckvalveswillbepartstrokeexercisedduringeachcoldshutdownperVR-1andfullstrokeexercisedduringeachreactorrefuelingoutage.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.
RELIEFREQUESTNO.VR-7REVISION51/06/95SXSXRL'afetyInjection(8770-G-078Sh130)V-07000V-07001ThesevalvesopentoprovideflowpathsfromtheRWTtothesuctionoftheassociatedlow-pressuresafetyinjectionpump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionintotheRCSviatheLPSIpumps.DuringplantoperationthisisprecludedbecausetheLPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Atcoldshutdown,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.Therefore,theonlypracticalopportunityfortestingthesevalvesisduringrefuelingoutageswhenwaterfromtheRWTisusedtofillthecavity.D-12 RELIEFREQUESTNO.VR-7(cont.)REVISION51/06/95Thesevalveswillbepartial-flowexercisedduringquarterlytestingoftheLPSIpumpsviatheminimumflowcircuitandfull-flowexercisedduringeachreactorrefuelingoutage.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position1and,assuch,isconsideredtobeapproveduponsubmittal.D-13 RELIEFREQUESTNO.VR-8REVISION51/06/95GXRZEZ'afetyInjection(8770-G-078Sh130)V-3401V-3410ThesevalvesopentoprovideflowpathsfromtheRWTandthecontainmentsumptothesuctionoftheassociatedhigh-pressuresafetyinjectionpump(HPSI).Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionviatheHPSIpumpsintotheRCS.DuringplantoperationthisisprecludedbecausetheHPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.D-14 RELIEFREQUESTNO.VR-8(cont.)REVISION51/06/95Thesevalveswillbepartial-flowexercisedduringquarterlytestingoftheHPSIpumpsviatheminimumflowcircuitandfull-flowexercisedduringeachreactorrefuelingoutage.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position1and,assuch,isconsideredtobeapproveduponsubmittal.D-15 RELIEFREQUESTNO.VR-9REVISION51/06/95BYSZRiSafetyInjection(8770-G-078Sh130)V-3414V-3427Thesevalvesopentoprovideflowpathsfromtherespective'PSIpumpstothehigh-pressuresafetyinjectionheaders.Theyclosetopreventrecirculationthroughanidlepump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingthesevalvestotheopenpositionrequiresinjectionintotheRCSviatheHPSIpumps.DuringplantoperationthisisprecludedbecausetheHPSIpumpscannotdevelopsufficientdischargepressuretoovercomeprimarysystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceedingthepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.PartialflowexercisingofthesevalvesisperformedwheneveritsassociatedHPSIpumpisusedtorefillaSIT.TheacceptableSITlevelandpressurebandsspecifiedbytheTechnicalSpecificationsareverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore,thepartialflowtestcannotreadilybeincorporatedintoaquarterlytest.Alternateflowpathsforpartialflowtestsarelimitedbythedesignpressureofthepiping.
RELIEFREQUESTNO.VR-9(cont.)REVISION51/06/95Thesevalveswillbeverifiedclosedquarterly.ThesevalvescheckwillbepartstrokeexercisedtotheopenpositionduringeachcoldshutdownperVR-1andfullstrokeexercisedtotheopenpositionduringeachreactorrefuelingoutage.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-17 RELIEFREQUESTNO.VR-10REVISION51/06/95GXG.GBL'.SafetyInjection(8770-G-078Sh131)V-3113V-3123V-3133V-3143A/CThesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjectionheaderstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Fullstrokeexercisingofthesevalveswouldrequireoperatingahighpressuresafetyinjection(HPSI)pumpatnominalaccidentflowrateandinjectingintothereactorcoolantsystemsincenofullflowrecirculationpathexists.DuringnormalpoweroperationthisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficientdischargepressuretoovercomereactorcoolantsystempressure.Duringcoldshutdownconditions,operationoftheHPSIpumpsisrestrictedtoprecludeRCSsystempressuretransientsthatcouldresultinexceeding.thepressure-temperaturelimitsspecifiedintheTechnicalSpecifications,Section3.4.9.PartialflowexercisingofoneofthesecheckvalvesisperformedwheneveritsassociatedSITisrefilled.TheacceptableSITlevelbandspecifiedbytheTechnicalSpecificationisverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore,thepartial'lowtestcannotreadilybeincorporatedintoaquarterlytest.
RELIEFREQUESTNO.VR-10(cont.)REVISION51/06/95Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.ThesecheckvalvesarerequiredtobeleaktestedbytheTechnicalSpecifications(seeVR-2).Theleaktestutilizesthevolumeofpressurizedwater(200-250psig)inasafetyinjectiontank(SIT)topressurizethedownstreamsideofoneofthecheckvalves.Themotoroperatedvalve(MOV)upstreamofthecheckvalveisclosedandthedrain-linelocatedbetweentheMOVandcheckvalveisopened.Oncetheinitialvolumeoftrappedwaterisdrained,thecheckvalveleakageiscollectedusingplastictubingandpolybottles.Theleakagevolumeandcollectiontimesareusedtocalculatethecheckvalveleakagerate.ThedrainvalvesforthesetestsarelocatedalongthenorthandsouthwallsofthewestendofthepipetunnelintheUnit1reactorauxiliarybuilding(RAB).ThisareaoftheRABisdesignatedasahighradiationarea.Inthecenterofthepipingtunnelhallwaythegeneralarearadiation.levelsvaryfrom20to30mRem/Hr.Alongthewallsofthepipetunnelwherethedrainvalvesarelocated,thecontactradiationlevelsrangefrom200mRem/Hr.to1,600mRem/Hr.Thetestrequiresatleast3testpersonnelfor1to2hourstoproperlyperformtheprocedure.Inaddition,thetestpersonnelmusthandleuptoseveralgallonsofcontaminatedwaterpertest,someofwhichcouldbeunderpressurewhenfirstvented.Performingthistestprocedureeachquarterwouldresultinunnecessarypersonnelradiationexposuresandpossiblepersonnelcontaminations.Themainreasonforcheckvalveclosuretestsistoprovethatthecheckvalvewillreturntotheclosedpositiononceithasbeencycledopen.Duringnormalpoweroperation,"theHPSIheadercheck,valvesarecycledopenonlywhileitsassociatedSITisfilled.Performingareverseflowtestonacheckvalvethathasnotbeenopenedisnotwarranted.However,ifthesecheckvalvesarecycledopen,abackflowtestcouldbeperformedtoverifyclosure.SincetheSITsmustbepressurizedtoperformthetest,thetestcanonlybeperformedduringthoseoperatingmodeswhichrequiretheSITstobeoperational.
RELIEFREQUESTNO.VR-10(cont.)REVISION51/06/95Thesevalveswillbepart-strokeexercisedopenwhilerefillingaSIT.TheSITtankswillonlyberefilledasrequiredtomaintainthemwithintheTechnicalSpecificationlimits.No'ITwillbefilledforthesolepurposeofpart-strokeexercisinganyoneofthesecheckvalves.Nhileinmodes1,2,and3(withpressurizerpressure>1750psia)abackflowtest,willbeperformedoneachcheckvalvecycledopenwhilefillingaSIT.Thetestwillbeperformedwithin24hoursafterthefillingoftheSIT.Atleastonceduringeachreactorrefuelingoutagethesevalveswillbefull-strokeexercisedtotheopenposition.ThesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting(seeVR-2).ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04and,assuch,isconsideredtobeapproveduponsubmittal.Thisreliefrequesthasbeenupdatedtoincludetheplant'sresponsetoAnomalyf8addressedbytheSt.LucieUnit1SafetyEvaluationissuedbytheNRCon26February1992.D-20 RELIEFREQUESTNO.VR-11REVISION51/06/95BYSTlRLSafetyInjection(8770-G-078Sh131)V-3114V-3124V-3134V-3144A/CThesevalvesopentoprovideflowpathsfromthelow-pressuresafetyinjectionheaderstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Sincenofullflowrecirculationpathexists,fullstrokeexercisingofthesevalveswouldrequireoperatingalowpressuresafetyinjection(LPSI)pumpatnominalaccidentflowrateandinjectingintothereactorcoolantsystem.AtpoweroperationthisisnotpossiblebecausetheLPSIpumpsdonotdevelopsufficientdischargepressuretoovercomereactorcoolantsystempressure.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication.Theonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.ThesecheckvalvesarerequiredtobeleaktestedbytheTechnicalSpecifications(seeVR-2).Theleaktestutilizesthevolumeofpressurizedwater(200-250psig)inasafetyinjectiontank(SIT)topressurizethedownstreamsideofoneofthecheck'valves.Themotoroperatedvalve(MOV)upstreamofthecheckvalveisclosedandthedrainlinelocatedbetween RELIEFREQUESTNO.VR-11(cont.)REVISION51/06/95theMOVandcheckvalveisopened.Oncetheinitialvolumeoftrappedwaterisdrained,thecheckvalveleakagei'collectedusingplastictubingandpolybottles.The*leakagevolumeandcollectiontimesareusedtocalculatethecheckvalveleakagerate.ThedrainvalvesforthesetestsarelocatedalongthenorthandsouthwallsofthewestendofthepipetunnelintheUnit1reactorauxiliarybuilding(RAB).ThisareaoftheRABisdesignatedasahighradiationarea.Inthecenterofthepipetunnelhallwaythegeneralarearadiationlevelsvaryfrom20to30mRem/Hr.Alongthewallsofthepipetunnelwherethedrainvalvesarelocated,thecontactradiationlevelsrangefrom200mRem/Hr.to1,600mRem/Hr.Thetestrequiresatleast3testpersonnelfor1to2hourstoproperlyperformtheprocedure.Inaddition,thetestpersonnelmusthandleuptoseveralgallonsofcontaminatedwaterpertest,someofwhichcouldbeunderpressurewhenfirstvented.Performingthistestprocedureeachquarterwouldresultinunnecessarypersonnelradiationexposuresandpossiblepersonnelcontaminations.Thesevalveswillbefull-strokeexercisedtotheopenpositionduringcoldshutdownperiodsperReliefRequestVR-1.ThesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting(seeVR-2).ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.D-22 RELIEFREQUESTNO..VR-12REVISION51/06/95BYSXl~SafetyInjection(8770-G-078Sh131)V-3215V-3225V-3235V-3245A/CThesevalvesopentoprovideflowpathsfromthesafetyinjectiontanks(SITs)tothereactorcoolantsystem(RCS)andclosetoisolatethetanksfromthehighpressureoftheRCSandthesafetyinjectionheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)TheonlypracticalmethodforfullstroketestingoftheSITdischargecheckvalvesisto'ischargethecontentsoftheSITstotheRCS.TheflowrateattainedduringtheSITdischargetestsissufficienttofullystrokethecheckvalCrediscstotheopenposition.FullstrokeexercisingoftheSITdischargecheckvalvescannotbeperformedinanyplantmodeotherthanrefuelingshutdownwhenthereactorvesselheadisremoved.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtestPerformingleaktestsofthesevalvesrequiresaconsiderableeffortsuchthattestingduringoperationwouldconstituteanunreasonableburdenontheplantstaff.D-23 REVISION51/06/95RELIEFREQUESTNO.VR-12(Cont.)WEachSITdischargecheckvalvewillbefull-strokedintheopendirectionduringrefuelingoutagesbydischargingtheSITstothe'reactorvessel.Underasamplingprogram,non-intrusivetestingofoneofthecheckvalvesonarotatingschedule,willbeperformedtoverifyitsdiscstrokestoitsbackstop.Shouldthesamplevalvebefoundtobeinoperable,theremainingthreevalvesmustbetestedusingnonintrusivetechniquesduringthesameoutage.Atleastonceeverytwo'(2)yearsthesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting.ThisreliefrequestforverifyingclosurebyPIVleaktestevery2yearsisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.Thealternateopeningagrees04,Position1tobeapprovedtechniqueforverifyingvalvefull-strokewiththeguidelinesofNRCGenericLetter89-asoutlinedbelowand,assuch,isconsidereduponsubmittal.1.PerformingafullflowtestoftheSITdischargecheckvalvesisimpracticalbecausetheflowrateattainedbydischargingthecontentsoftheSITstotheRCSorbyrecirculatingnormalshutdowncoolingsystemflowdonotmeetthevalvesmaximumrequiredaccidentconditionflow.UnderlargebreakLOCAaccidentconditions,themaximum(peak)flowratethroughthesevalveswouldbeapproximately20,000gpm.ThemaximumflowrateachievablebythedischargetestisrestrictedbythelongstroketimeoftheSITdischargeisolationvalve.TheSITdischargeisolationvalvesaremotoroperatedvalveswithanominalstroketimeof52seconds.2.ThefullstroketestoftheSITdischargecheckvalvesisperformedwiththereactorvesselheadremovedandthereactorcavityflooded.ThetestconsistsofestablishingaspecifiednitrogenpressureintheSITtobeusedasamotiveforcetodischargeaportionoftheSITinventorythroughthecheckvalves.TheinitialSITpressureandlevelarenominallysetat85psigand87.5%.TheseparameterswereselectedtoensuretheflowratedevelopedD-24 REVISION51/06/95RELIEFREQUESTNO.VR-12(Cont.)wouldbegreaterthantheflowraterequiredtostrokethevalvetothebackstopwithoutcompletelyemptyingtheSITandrapidlyinjectinganitrogenbubbleintothecontainmentatmosphere,whichisnotacceptablefromanairbornecontaminationstandpoint.ThetestisinitiatedbyopeningtheSIToutleti'solationmotoroperatedvalve.TheopeningstrokeoftheSIheadercheckvalveundertestisthenverifiedbymonitoringSITlevelandpressureasthecontentsoftheSITdischargeintotherefuelingcavity.Nonintrusiveacousticandeddy-.currenttechnologyisusedtoprovidepositiveindicationthattheflowrateachievedduringthetestscausesfullvalvedisctraveltothebackstopduringthedischargetest.Eddycurrentinstrumentationisutilizedtodeterminethatthevalvedisctravelsduringthedischargetest.Acousticinstrumentationisutilizedtodetecttheacousticimpactcausedbythevalvediskstrikingthebackstop.3.EachoftheSITdischargecheckvalveswerefullstroketestedduringtheUnit11994refuelingoutage.TheseSITdischargetestswereperformedinaccordancewithplantapprovedproceduralinstructions.EachvalvewasmonitoredduringtheSITdischargetestsutilizingITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationwiththeassistanceofITIMOVATSDiagnosticandEngineeringpersonnel.Theflowrates,asdeterminedbySITleveldecreaseovertime,achievedduringthetestsweresufficienttocausefullvalvedisctraveltothebackstop.Eddycurrentandacousticimpactanalysisdeterminedthateachofthevalvediscstraveledopenandimpactedthebackseatsduringthetests.Thenonintrusivetechniquesusedtoverifythesecheckvalvesfullyopenareconsidered"otherpositivemeans"inaccordancewithParagraphIWV-3522ofSectionXI.4.ITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationusedtoperformthistestingisownedandmaintainedbyFPL.ITIMOVATSsuppliedtheservicestoinitiallycalibratetheinstrumentationpriortothe1994refuelingoutageinaccordancewiththeITIMOVATS'QualityAssuranceManual.D-25 RELIEFREQUESTNO.VR-12(Cont.)REVISION51/06/95Theservicessuppliedwerecontrolledinaccordancewithapplicableprogramrequirementsof10CFR50AppendixBandANSIN45,2.FPLwillverifythecurrentcalibrationofthisequipmentorwillrecalibratetheinstrumentationtoITIMOVATSQualityAssuranceManualrequirementsortoFPLQualityAssurancerequirementspriortoitbeingutilizedforanyfutureSectionXICodetesting.5.TheSITdischargecheckvalvesarethesamesizeandmodelnumber.Theyareinstalledinidenticalorientationandexposedtothesameoperatingconditions.Eachofthesevalveshasbeendisassembledandinspectedduringpreviousrefuelingoutages.FP&Lhasadditionallyreviewedtheoperatingandmaintenancehistoryofsimilarvalvesusedthroughouttheindustryundercomparableconditions.Basedonthesereviewsandinspections,thereisnoevidenceofvalvedegradationwithrespecttotheirabilitytoopenandsatisfactorilypasstherequiredflow.ThisalongwiththeobservationthattheSITflowrateandpressuredroptracesobtainedduringthe1994refuelingoutagetestingarenearlyidentical,indicatethatthisbaselinedatawastakenwheneach-valvewasinsimilargoodworkingcondition.6.TheacceptancecriteriaforthealternativetestingoutlinedinthereliefrequestisconsistentwiththerequirementsofNRCGenericLetter89-04,Position1,andNRCrecommendationsoutlined'inDraftNUREG-1482,'GuidelinesforInserviceTestingatNuclearPowerPlants'D-26 RELIEFREQUESTNO.VR-13REVISION51/06/95SYSTEM'afetyInjection(8770-G-078Sh131)V-3217V-3227V-3237V-3247A/CThesevalvesopentoprovideflowpathsfromthesafetyinjection(SI)headerstothereactorcoolantsystem(RCS)andclosetoisolatetheheadersfromthehighpressureoftheRCS.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)TheonlypracticalmethodforfullstroketestingoftheSIheadercheckvalvesistodischargethecontentsofthesafetyinjectiontanks(SITs)totheRCS.TheflowrateattainedduringtheSITdischargetestsissufficienttofullystrokethecheckvalvediscstotheopenposition.FullstrokeexercisingoftheSIheadercheckvalvescannotbeperformedinanyplantmodeotherthanrefuelingshutdownwhenthereactorvesselheadisremoved.Part-stroketestingduringpoweroperationisnotpracticalbecauseaflowpathdoesnotexistduetohigherRCSpressure.Itispracticaltoconductapart-stroketestateachcoldshutdown.Duringcoldshutdown,theSIcheckvalvescanbepart-strokedbythenormalflowdeliveredtotheRCSviatheshutdowncoolingsystem.Shutdowncoolingflowratesdonotmeetthemaximumrequiredaccidentconditionflowanddonotfullystrokethevalvesopen.D-27 RELIEFREQUESTNO.VR-13(Cont.)REVISION51/06/95Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Performingleaktestsofthesevalvesrequiresaconsiderableeffortsuchthattestingduringoperationwouldconstituteanunreasonableburdenontheplantstaff.EachSIheadercheckvalvewillbefull-strokedintheopendirectionduringrefuelingoutagesbydischargingtheSITstothereactorvessel.Underasamplingprogram,non-intrusivetestingofoneofthecheckvalvesonarotatingschedule,willbeperformedtoverifyitsdiscstrokestoitsbackstop.Shouldthesamplevalvebefoundtobeinoperable,theremainingthreevalvesmustbetestedusingnonintrusivetechniquesduringthesameoutage.Duringeachcoldshutdownthesevalveswillbepartial-strokeexercisedusingtheLPSIpumpsperReliefRequestNo.VR-1.Atleastonceeverytwo(2)yearsthesevalveswillbeverifiedtocloseinconjunctionwithPIVleaktesting.ThisreliefrequestforverifyingclosurebyPIVleaktestevery2yearsisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.Thealternatetechniqueforverifyingvalvefull-strokeopeningagreeswiththeguidelinesofNRCGenericLetter89-04,Position1asoutlinedbelowand,assuch,isconsideredtobeapproveduponsubmittal.1.PerformingafullflowtestoftheSIheadercheckvalvesisimpracticalbecausetheflowrateattainedbydischargingthecontentsoftheSITstotheRCSorbyrecirculatingnormalshutdowncoolingsystemflowdonotmeetthevalvesmaximumrequiredaccidentconditionflow.UnderlargebreakLOCAaccidentconditions,themaximum(peak)flowratethroughthesevalveswouldbeapproximately20,000gpm.ThemaximumflowrateachievablebythedischargetestisrestrictedbythelongstroketimeoftheSITdischargeisolationvalve.TheSITdischargeisolation REVISION51/06/95RELIEFREQUESTNO.VR-13(Cont.)valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.2.ThefullstroketestoftheSIheadercheckvalvesisperformedwiththereactorvesselheadremovedandthereactorcavityflooded.ThetestconsistsofestablishingaspecifiednitrogenpressureintheSITtobeusedasamotiveforcetodischargeaportionoftheSITinventorythroughthecheckvalves.TheinitialSITpressureandlevelarenominallysetat85psigand87.5%.TheseparameterswereselectedtoensuretheflowratedevelopedwouldbegreaterthantheflowraterequiredtostrokethevalvetothebackstopwithoutcompletelyemptyingtheSITandrapidlyinjectinganitrogenbubbleintothecontainmentatmosphere,whichisnotacceptablefromanairbornecontaminationstandpoint.ThetestisinitiatedbyopeningtheSIToutletisolationmotoroperatedvalve.TheopeningstrokeoftheSIheadercheckvalveundertestisthenverifiedbymonitoringSITlevelandpressureasthecontentsoftheSITdischargeintotherefuelingcavity.Nonintrusiveacousticandeddy-currenttechnologyisusedtoprovidepositiveindicationthattheflowrateachievedduringthetestscausesfullvalvedisctraveltothebackstopduringthedischargetest.Eddycurrentinstrumentationisutilizedtodeterminethatthevalvedisctravelsduringthedischargetest.Acousticinstrumentationisutilizedtodetecttheacousticimpactcausedbythevalvediskstrikingthebackstop.EachoftheSIheadercheckvalveswerefullstroketestedduringtheUnit11994refuelingoutage.TheseSITdischargetestswereperformedinaccordancewithplantapprovedproceduralinstructions.EachvalvewasmonitoredduringtheSITdischargetestsutilizingITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationwiththeassistanceofITIMOVATSDiagnosticandEngineeringpersonnel.Theflowrates,asdeterminedbySITleveldecreaseovertime,achievedduringthetestsweresufficienttocausefullvalvedisctraveltothebackstop.Eddycurrentandacousticimpactanalysisdeterminedthateachofthevalvediscstraveledopenandimpactedthebackseatsduringthetests.ThenonintrusivetechniquesusedtoverifytheseD-29 REVISION51/06/95RELIEFREQUESTNO."VR-13(Cont.)checkvalvesfullyopenareconsidered"otherpositivemeans"inaccordancewithParagraphIWV-3522,ofSectionXI.4.ITIMOVATSCheckmateAcoustic/EddyCurrentCheckValveAnalysisSysteminstrumentationusedtoperformthistestingisownedandmaintainedbyFPL.ITIMOVATSsuppliedtheservicestoinitiallycalibratetheinstrumentationpriortothe1994refuelingoutageinaccordancewiththeITIMOVATSQualityAssuranceManual.Theservicessuppliedwerecontrolledinaccordancewithapplicableprogramrequirementsof10CFR50AppendixBandANSIN45.2.FPLwillverifythecurrentcalibrationofthisequipmentorwillrecalibratetheinstrumentationtoITIMOVATSQualityAssuranceManualrequirementsortoFPLQualityAssurancerequirementspriortoitbeingutilizedforanyfutureSectionXICodetesting.5.TheSIheadercheckvalvesarethesamesizeandmodelnumber.Theyareinstalledinidenticalorientationandexposedtothesameoperatingconditions.Eachofthesevalveshasbeendisassembledandinspectedduringpreviousrefuelingoutages.FP&Lhasadditionallyreviewedtheoperatingandmaintenancehistoryofsimilarvalvesusedthroughouttheindustryundercomparableconditions.Basedonthesereviewsandinspections,thereisnoevidenceofvalvedegradationwithrespecttotheirabilitytoopenandsatisfactorilypasstherequiredflow.ThisalongwiththeobservationthattheSITflowrateandpressuredroptracesobtainedduringthe1994refuelingoutagetestingarenearlyidentical,indicatethatthisbaselinedatawastakenwheneachvalvewasinsimilargoodworkingcondition.6.TheacceptancecriteriaforthealternativetestingoutlinedinthereliefrequestisconsistentwiththerequirementsofNRCGenericLetter89-04,Position1,andNRCrecommendationsoutlinedinDraftNUREG-1482,'GuidelinesforInserviceTestingatNuclearPowerPlants'.D-30 RELIEFREQUESTNO.VR-14REVISION51/06/95BYKZK'ainSteam(8770-G-079,Sh1)V-08117V-08148ThesevalvesclosetopreventunrestrictedreleaseofsteamfromanunaffectedsteamgeneratorintheeventofasteamlineruptureupstreamofanMSIV.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnopracticalmeansorprovisionforpressurizingthepipingdownstreamofthesevalvesinordertoverifyclosureofthesevalves.Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheremainingothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.Followingvalvereassemblyforwardflowoperationofthevalveswillbeobservedduringtheensuingstartup.ThissatisfiestherequirementsofGenericLetter8904'osition2and,assuch,isconsideredtobeapproveduponsubmittal.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.
RELIEFREQUESTNO.VR-15REVISION51/06/95GX.STERMakeupWater(8770-G-084,Sh1)V-15328A/CThisvalveclosestoprovideprimarycontainmentforthepenetrationrelatedtothemakeupwatersupplylinetothecontainmentbuilding.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thisisasimplecheckvalvewithnoexternalmeansofposition.indication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuilding,whichisimpracticalduringplantoperationandwouldbeanunreasonableburdenon'heplantstafftoperformatcoldshutdown.Atleastonceeverytwo(2)years,thisvalvewillbeverifiedtocloseinconjunctionwiththeAppendixJleaktestingprogram.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-32 RELIEFREQUESTNO.VR-16REVISION51/06/95BXRZEH'nstrumentAir(8770-G-085,Sh2)V-18195A/CThisvalveclosestoprovideprimarycontainmentforthepenetrationrelatedtotheinstrumentairsupplylinetothecontainmentbuilding.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thisisasimplecheckvalvewithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuildingandsecuringallinstrumentairtothecontainment.Duetoaccesslimitationsandtheundesirabilityofisolatingtheairsupplyforcriticalequipment,thisisimpracticalduringplantoperationandwouldbeanunreasonableburdenontheplantstafftoperformatcoldshutdown.Atleastonceeverytwo(2)years,thisvalvewillbeverifiedtocloseinconjunctionwiththeAppendixJleaktestingprogram.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.'ID-33 RELIEFREQUESTNO.VR-17REVISION51/06/95BXRX1~ContainmentSpray(8770-G-088)V-07119V-07120Thesevalvesopentoprovideflowpathsfromtherefuelingwatertank(RWT)tothecontainmentsprayandsafetyinjectionsuctionheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)FullstrokeexercisingofthesevalveswouldrequiresimultaneousoperationoftwoHPSIpumps,oneLPSIpump,andonecontainmentspraypumptoverifythateachvalvecouldpassthemaximumdesignaccidentflow.Suchatestisnotpracticalduringanyplantoperationalmodes.Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitsofthevariousSafetyInjectionsystems.D-34 RELIEFREQUESTNO.VR-17(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.Followingreassembly,eachvalvewillbepartial-flowexercisedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-35 RELIEFREQUESTNO.VR-18REVISION51/06/95BXSX1'Z'ontainmentSpray(8770-G-088)V-07129V-07143Thesevalvesopentoprovideflowpathsfromtherespectivecontainmentspraypumptothecontainmentsprayheaders.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Fullstrokeexercisingofthesevalveswouldrequireoperatingeachcontainmentspraypumpatnominalaccidentflowrate~Sinceexercisingthesevalvesthroughthenormalcontainmentsprayflowpathwouldresultinsprayingdownthecontainment,theonlypracticalflowpathavailableforsuchatestrequirespumpingwaterfromtheRWTtotheRCSviatheshutdowncoolingloops'tcoldshutdown,theshutdowncoolingsystemcannotprovidesufficientletdownflowtotheRWTtoaccommodatefulldesignflowfromtheRWTwhilemaintainingthenecessarycorecoolingfunction.D-36 RELIEFREQUESTNO.VR-18(cont.)REVISION51/06/95Eachofthesevalveswillbepartial-strokeexercisedquarterlyinconjunctionwithtestingofthecontainmentspraypumpsviatheminimumflowtestline.Duringeachrefuelingoutage,eachvalvewillbeexercisedatleastoncetodemonstratefullstrokecapability.ThisreliefrequestisapprovedbyNRCSafetyEva'luationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-37 RELIEFREQUESTNO.VR-19REVISION51/06/95BYRHRL'ontainmentSpray(8770-G-088)V-07172V-07174Thesevalvesopentoprovideflowpathsfromthecontainmentsumptothecontainmentsprayandsafetyinjectionsuctionheadersduringrecirculation.Checkvalvesshallbeexercisedatleast.onceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Exercisingthesevalvestoanyextent(fullorpartialflow)wouldrequirefloodingthecontainmentsumpandpumpingfromthesumptothecontainmentsprayheadersandthereactorcoolantsystem.ItisbothundesirableandimpracticaltofloodthecontainmentsumpandtransferthatwatertotheRCSortothesprayheadersasitwouldcreatesignificantcontaminationhazardsandhaveanadverseeffectonplantchemistry.Therearenootherprovisionsforexercisingthesevalves.Furthermore,sinceflowcannotbepassedthroughthesevalves,non-intrusivetestingmethodsofverifyingvalveoperationarenotapplicable.D-38 RELIEFREQUESTNO,VR-19(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.ThissatisfiestherequirementsofGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.Since,asdiscussedabove,partialflowtestingofthesevalvesisnotpractical,exercisingafterreassemblywillnotbeperformed.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-39 RELIEFREQUESTNO.VR-20REVISION51/06/95SXSZRZ'ontainmentSpray(8770-G-088)V-07192V-07193Thesevalvesopentoprovideflowpathsfromtherespectivecontainmentsprayheaderstothecontainmentsprayrings.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Anyexercising(full-strokeorpartialflowtesting)ofthesevalvesusingsystemflowrequirestheoperationofeachcontainmentspraypumpthroughthenormalcontainmentsprayflowpaths.Operatingthesysteminthismannerwillresultinspillingsignificantquantitiesofcontaminatedwaterthroughoutthecontainmentbuilding.Thisisobviouslyundesirableandisconsideredtobeimpractical..Becausenon-intrusivetechniquesingeneralrequiresystemflow,theyarenotunderconsiderationforthesevalves.Also,leaktestingofthesevalvesisnotpossiblesince,duetothesystemconfiguration,thereisnopracticalmeansofclosingthepipingdownstreamofthesevalves.PerformingperiodicinspectionsofbothvalvesduringrefuelingoutageswillsatisfytherequirementofGenericLetter89-04Position1.D-40 RELIEFREQUESTNO.VR-20(cont.)REVISION51/06/95Duringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-41 RELIEFREQUESTNO.VR-21REVISION51/06/95GX.SXRL'ontainmentSpray(8770-G-088)v-07256V-07258Thesevalvesopentoprovideflowpathsfromthesprayadditivetanktotherespectivecontainmentspraypumpsuctionheader.Theyclosetopreventreverseflowandrecirculationthroughtheeductorleadingtoanidlecontainmentspraypump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Testingthesevalvesduringnormalplantoperationduringtestingofthecontainmentspraypumpswouldcontaminatethecontainmentspraypipingwithsodiumhydroxide.Theonlypracticalmeansoftestingthesevalvesrequiresconnectionofasourceofdemineralizedwateratthetankdischargethendirectingwaterintothecontainmentspraypiping.Thisplacesbothcontainmentspraytrainsoutofserviceandwouldentailasomewhatcomplexprocedurethatisconsideredoutsidethescopeofworkthatistypicallyperformedduringaroutinecoldshutdownperiod,thus,suchatestisimpracticalduringperiodsotherthanreactorrefuelingoutages.D-42 RELIEFREQUESTNO.VR-21(cont.)REVISION51/06/95Duringeachreactorrefuelingoutagebothofthesevalveswillbefull-strokeexercised.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,and,assuch,isconsideredtobeapproveduponsubmittal.D-43 REVISION51/06/95RELIEFREQUESTNO.VR-22BEG.I3~ContainmentSpray(8770-G-088)V-07269V-07270Thesevalvesopentoprovideaflowpathfromtherespectivecontainmentsprayheadertothesprayadditiveeductors.Thisflowthroughtheeductorsprovidesthemotiveforcetoinjectasodiumhydroxidesolutionintothesuctionofthecontainmentspraypumps.Thesecheckvalvescloseuponthefailureofonecontainmentspraypumpfollowinganaccident.Thecheckvalveinthefailedtrainclosestopreventbackflowfromtheoperatingheadertotheidlecontainmentsprayheader.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thesecheckvalvescannotbefullflowexercisedduringnormaloperation.Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,position1.ReverseflowtestingofthesecheckvalvescannotbeperformedduringanyModewithoutundueburden.Duringnormaloperations,bothtrainsofthecontainmentspraysystem,includingthesodiumhydroxidesystem,mustbeoperable.Attemptingabackflowtestofeitherofthesevalveswouldrequireavalveline-upwhichwouldplacebothtrainsofthesodiumhydroxidesystemsoutofservice.D-44 REVISION51/06/95RELIEFREQUESTNO.VR-22(cont.)Tobackflowtestthetwocheckvalves,asource*ofpressurizedboratedwatermustbeconnecteddownstreamofthecheckvalves.Theupstreamsideofthecheckvalvesmustbedepressurizedanddrainedinor'dertocollectthebackleakagethroughoneofthecheckvalves.ThedrainvalvesforthesetestsarelocatedintheshutdownheatexchangerroomsintheUnit1reactorauxiliarybuilding(RAB).Thegeneralarearadiationlevelsaroundthedrainvalvesvaryfrom50mRem/Hrtogreaterthan100mRem/Hr,thecontactradiationlevelsrangefrom100to1200mRem/Hr.Approximately220feetof12inchpipingmustbedrainedforeachtest,Performingthesetestswouldresultinunnecessarypersonnelradiationexposures,possiblepersonnelcontaminations,andgenerateover2,600gallonsofborated,contaminatedwaterthatmustbedrained,treated,andfinallyreplaced.Anotherproblemwithperformingthebackflowtestisthesystemline-upforthetest.Thetestmustrelyupontwo10inchgatevalvestoberelativelyleaktightagainstthepressureofshutdowncoolingoperatinginthealternatecontainmentsprayheader.Leakagethroughthesetwo10inchgatevalves(notrequiredtobeleaktight),wouldresultinaninaccurateleakageratemeasurementforthevalvesintest.Thiscouldresultindeclaringthecheckvalvesinoperativeandperformingunnecessarymaintenance.Eachofthesevalveswillbepartial-strokeexercisedquarterlyinconjunctionwithtestingofthecontainmentspraypumps.Duringeachreactorrefuelingoutageatleastone'fthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyboththeopenandclosecapabilities.Inspectionsshallbescheduledsuchthateachvalveissubjecttoinspectionatleastonceeverysixyears.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothervalvewillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.0ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember17,1993.D-45 REVISION51/06/95RELIEFREQUESTNO.VR-23WITHDRAWNbyRevision$3D-46 RELIEFREQUESTNO.VR-24REVISION51/06/95WITHDRAWNbyRevision$4D-47
RELIEFREQUESTNO.VR-25REVISION51/06/95BXSXJKUltimateHeatSink(8770-G-093)SB-37-1SB-37-2ThesevalvesareopenedtoprovideasecondsourceofcoolingwaterfromBigMudCreek.CategoryAandBvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3412(a),IWV-3415,andIWV-3416.(IWV-3411)TheoperationofthesevalvesislimitedforenvironmentalconcernstominimizethequantityofwaterdrawnfromtheIndianRiveranddischargedtotheocean.ForthisreasontheFUSAR(Section9.2.7)specifiesexercisingthesevalvesatsix(6)monthintervals.IThesevalveswillbeexercisedonlyonceeverysix(6)months'ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-48
RELIEFREQUESTNO.VR-26REVISION51/06/95WITHDRAWNbyRevisionf4D-49
RELIEFREQUESTNO.VR-27WITHDRAWNbyRevision$4REVISION51/06/95D-50 0
RELIEFREQUESTNO.VR-'28REVISION51/06/95SYSXKX'hemicalandVolumeControlSystem(8770-G-078,Sh121)V-2443V-2444Thesevalvesopentoprovideaflowpathfromtheboricacidmakeuppumpstotheemergencyborationheader.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Full-stroketestingthesevalvesrequiresoperatingtheboricacidmakeuppumpsatornearratedflowandverifyingfullaccidentflowthrougheachvalve.OperatingoftheBAMPumpsdischargingintoemergencyborationlinewouldcausetheintroductionofhighlyconcentratedboricacidsolutionfromtheBAMTankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.ThisrapidinsertionofnegativereactivitywouldresultinarapidRCScooldownandde-pressurization.AlargeenoughboronadditionwouldresultinanunscheduledplanttripandapossibleinitiationofSafetyInjectionSystems.Duringcoldshutdown,theintroductionofexcessquantitiesofboricacidintotheRCSisundesirablefromtheaspectofmaintainingproperplantchemistryandtheinherentdifficultiesthatmaybeencounteredduringthesubsequentstartupduetoover-boxationoftheRCS.ThewastemanagementsystemwouldbeoverburdenedbythelargeamountsofRCScoolantthatwouldrequireproce'ssingtodecreaseitsboronconcentration.Inadditiontotheabove,thereisnoflowratemeasurementinstrumentationinstalledinthisflowpath.
RELIEFREQUESTNO.VR-28(cont.)REVISION51/06/95AsecondcircuitthatrecirculateswatertotheRWThasflowratemeasuringinstrumentationinstalledhoweveritislimitedto30gpm(BAMPumpdesigncapacityis142gpm).Eachofthesevalveswillbepartialstrokeexercisedquarterly.Duringtestingofthe.boricacidmakeuppumpsperformedduringeachreactorrefueling(SeeReliefRequestPR-5),systemflowratewillbemeasuredtoverifyfullstrokeofthesevalves.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedFebruary26,1992.D-52 RELIEFREQUESTNO.VR-29REVISION51/06/95SYSX~SafetyInjectionSystem(8770-G-078,Sh130)V-3101V-3103Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjectionpumpstotherefuelingwatertanktoprovideforminimumflowthroughtherespectivepumpsintheeventtheyareoperatingunderlowornoflowconditions.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,Position1.D-53 REVISION51/06/95RELIEFREQUESTNO.VR-29(cont.)Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.Duringeachreactorrefuelingoutagethesetwovalveswillbefull-flowtested.OnUnit1theHPSIpumpsarecapableoftakingsuctionfromthedischargeoftheshutdown.coolingheatexchangers.TheflowpathwillbefromtherefuelingcavitytotheRWT,viatheshutdowncoolingsystemandHPSIpumpmini-flowrecirculationline.TheflowratewillbecalculatedbymeasuringtheincreaseintheRWTvolumeanddividingitbytheHPSIpumpruntime.ThistestlineupreducesRCSinventoryandcanonlybeperformedduringrefuelingoutageswhenthetheheadisoffthereactorpermittingrefuelingcavityinventorytobedrainedtotheRWT.TestingateachrefuelingoutageisanallowabledeferraloftherequiredtestingasallowedbyOM-10.OM-10specifiesfull-strokeexercisingateachrefuelingoutageiftestingisimpracticalbothquarterlywhileinoperationandduringcoldshutdownoutages.TheuseoftheOM-10paragraph4.3.2requirementsapplicabletothisreliefrequestwereapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.ThisreliefrequestislistedfordocumentationpurposesonlyasrequiredbytheCode(IWV-3412,IWV-3522,andOM-10,paragraph6.2).D-54 RELIEFREQUESTNO.VR-30REVISION51/06/95SYRIAKSafetyInjectionSystem(8770-G-078,Sh130)V-3104V-3105Thesevalvesopentoprovideflowpathsfromthelow-pressuresafetyinjectionpumpstotherefuelingwatertanktoprovideforminimumflowthroughtherespectivepumpsintheeventtheyareoperatingunderlowornoflowconditions.Theycloseduringshutdowncoolingandlong-termrecirculationtopreventrecirculationthroughtheidlepump(s).Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingasrequiredbytheGenericLetter89-04,Position1.D-55 RELIEFREQUESTNO.VR-30(cont.)REVISION51/06/95Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.Duringeachreactorrefuelingoutagethesetwovalveswillbefull-flowtested.TheflowpathwillbefromtherefuelingcavitytotheRWTviatheshutdowncoolingsystemandtheLPSIpumpmini-flowrecirculationline.TheflowratewillbecalculatedbymeasuringtheincreaseintheRWTvolumeanddividingitbytheLPSIpumpruntime.ThistestlineupreducesRCSinventoryandcanonlybeperformedduringrefuelingoutageswhenthetheheadisoffthereactorpermittingrefuelingcavityinventorytobedrainedtotheRWT.TestingateachrefuelingoutageisanallowabledeferraloftherequiredtestingasallowedbyOM-10.OM-10specifiesfull-strokeexercisingateachrefuelingoutageiftestingisimpracticalbothquarterlywhileinoperationandduringcoldshutdownoutages~TheuseoftheOM-10paragraph4.3.2requirementsapplicabletothisreliefrequestwereapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.ThisreliefrequestislistedfordocumentationpurposesonlyasrequiredbytheCode(IWV-3412,IWV-3522,andOM-10,paragraph6.2).D-56 RELIEFREQUESTNO.VR-31REVISION51/06/95BXSZEH'eedwaterSystem(8770-G-080,Sh3)V-09303V-09304V-09305V-12507ValvesV-09303throughV-09305opentoprovideflowpathsfromtheauxiliaryfeedwaterpumpdischargetothecondensatestoragetanktoensureadequatepumpcoolingduringlowflowconditions.V-12507openstoprovideadischargeflowpathforbearingcoolingwaterfromthesteam-drivenauxiliaryfeedwaterpump.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Thereisnoflowrateinstrumentationavailabletoverifyvalvefull-strokeexercisingofthesevalvesasrequiredbytheGenericLetter89-04,Position1.Duringquarterlypumptestingeachofthesevalveswillbepartial-strokeexercisedviarecirculationthroughtheminimumflowtestcircuitswithnoflowmeasurements.D-57 RELIEFREQUESTNO.VR-31(cont.)REVISION51/06/95Duringeachreactorrefuelingoutageatleast-oneofthethreeAFWpumpminimumflowrecirculationvalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Shouldavalveunderinspectionbefoundtobeinoperable,thentheothertwovalveswillbeinspectedduringthesameoutage,afterwhichtherotationalinspectionschedulewillbereinitiated.DuringeachreactorrefuelingoutageV-12507willbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbepartial-flowexercisedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-58 RELIEFREQUESTNO.VR-32REVISION51/06/95WITHDRAWNbyRev.4D-59 RELIEFREQUESTNO.VR-33REVISION51/06/95WITHDRAWNbyRev.3D-60 RELIEFREQUESTNO.VR-34REVISION51/06/95PrimaryContainmentValves6-inchesNPSandlargersubjecttoleakageratetestingper10CFR50,AppendixJ.A/C(CheckValves)A(Motor-operatedvalves)Eachofthesevalvesisdesignatedasacontainmentisolationvalvemaintainingtheleakrateintegrityoftheprimarycontainmentinthecaseofanaccident.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Theusefulnessofapplyingthisrequirementdoesnotjustifytheburdenofcompliance.ThispositionissupportedbyNRCGenericLetter,Position10Leakratetestresultsforvalves6-inchesorgreater(NPS)willbeevaluatedperIWV-3426andIWV-3427(a)however,therequirementsofIWV-3427(b)willnotbeapplied.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position10and,assuch,isconsideredtobeapproveduponsubmittal.
RELIEFREQUESTNO.VR-35REVISION51/06/95BY'iZEK'ntakeCoolingWater(8770-G-082,Sh1)TCV-14-4ATCV-14-4BThesevalvesaretemperaturecontrolvalvesthatcontroltheintakecoolingwaterflowthroughthecomponentcoolingheatexchangers.Thestroketimeofallpoweroperatedvalvesshallbemeasuredto.....,wheneversuchavalveisfull-stroketested.(IWV-3413(b))Thesevalvesareairoperated,springreturnvalvesthatfailtotheopenposition.Theyareeachprovidedwithanactuatorthatpositionsthevalveinresponsetoanairsignalinputfromitstemperaturecontroller.Inordertostrokeoneofthesevalvesandperformthefailsafetest,thevalve'sinstrumentairisolationvalvemustbeclosedandthevalve'sactuatorde-pressurizedthroughthemoistureseparatorvent.Oncetheinstrumentairisolationvalvehasbeenclosed,theairpressurewillbegintodecrease.Theventpathmustbemanuallyheldopenandisdependentuponthefingerpressureoftheoperator.Theratethattheactuatorcanbede-pressurizedisdependentuponthetimeittakestoclosetheisolationvalveandventofftheairpressure.Asaresult,themeasurementofthevalvestroketimewouldbesimplyan"estimate"andwouldvarydependentupontheoperatorperformingthetest.Thevaryingstroketimescouldplacethesevalvesinalertneedlesslyandwouldnoteffectivelyreflecttheconditionofthesecontrolvalves.D-62 RELIEFREQUESTNO.VR-35(cont~)REVISION51/06/95Thesevalveswillbeexercisedandfailsafetestedonceeachquarter.Duringvalveexercisingandfailsafetesting,thevalve'sstroketimewillbemeasuredandcomparedagainstthemaximumallowedstroketime.Shouldthemeasuredstroketimeexceedthemaximumallowedthevalvewillbedeclaredoutofserviceandappropriatecorrectiveactionstaken.Thevalves'troketimeswillnotbesubjecttoevaluationandcorrectiveaction(increasedtestfrequency)perIWV-3417(a).ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedJanuary29,1993.D-63 RELIEFREQUESTNO.VR-36REVISION51/06/95WITHDRAWNbyRevision$4D-64 RELIEFREQUESTNO.VR-37REVISION51/06/95WITHDRAWNbyRevision44D-65 RELIEFREQUESTNO.VR-38REVISION51/06/95BYRZRZ'eedwater(8770-G-080,Sh3)V-09248V-09280Thesevalvesopentoprovidethenormalflowpathsforfeedwatermakeuptothesteamgenerators(non-safetyfunction).TheyclosetoisolatethemainfeedwatersystemfromtheAFWpumpflowpathtothesteamgenerators.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequireisolatingtheassociatedsteamgenerator.Thisisclearlynotpracticalandwouldresultinanunacceptableplanttransient.Duringshutdownperiods,duetotheplantconfiguration,thereisnopracticalwaytoreverseflow(pressure)testthesevalvestoverifyclosure'-66 REVISION51/06/95RELIEFREQUESTNO.VR-38(cont.)Duringeachreactorrefueloutages'tleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,assuch,isconsideredtobeapproveduponsubmittal.D-67 RELIEFREQUESTNO.VR-39REVISION51/06/95SYRZEK'afetyInjection(8770-G-078,Sh.131)v-3480V-3651V-3481V-3652A(Motor-operatedvalves)Themotor-operatedvalvesopenforresidualheatremovalrecirculationduringshutdown.Eachofthesevalvesisdesignatedasapressureisolationvalve(PIV)andprovidesisolationofsafeguardsystemsfromtheRCS.Theleakagerateforvalves6-inchesorgreatershallbeevaluatedperSubsectionIWV-3427(b).(IWV-3521)Leaktestingofthesevalvesisprimarilyforthepurposeofconfirmingtheircapabilityofpreventingover-pressurizationandcatastrophicfailureofthesafetyinjectionpipingandcomponents.ThesefourMOV'sarenotaddressedintheSt.LucieUnit1TechnicalSpecifications3.4.6.2asaPIVbuttheyaretestedasthoughtheywere.TheTechnicalSpecificationsaddressesthequestionofvalveintegrityinamoreappropriatemannerforthesevalves.SatisfyingboththeTechnicalSpecificationandtheCodeacceptancecriteriaisnotwarrantedandimplementationwouldbedifficultandconfusing.D-68 RELIEFREQUESTNO.VR-39(cont.)REVISION51/06/95TheleakagerateacceptancecriteriaforthesevalveswillbeestablishedpertheSt.LucieUnit1TechnicalSpecifications,Table3.4.6-1.Leakagerateslessthan1.0gpmareacceptable.2.Leakageratesgreaterthan1.0gpmbutlessthanorequalto5.0gpmareacceptableifthelatestmeasuredratehasnotexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.3.Leakageratesgreaterthan1.0gpm,butlessthanorequalto5.0gpm,areunacceptableifthelatestmeasuredrateexceededtheratedeterminedbytheprevioustestbyanamountthatreducesthemarginbetweenmeasuredleakagerateandthemaximumpermissiblerateof5.0gpmby50%orgreater.4,Leakageratesgreaterthan5.0gpmareunacceptable.ThisreliefrequestisapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-69 RELIEFREQUESTNO.VR-40REVISION51/06/95SYZZEH'ainSteam(8770-G-079,Sh1)V-08130V-08163.ThesevalvesopentoprovideflowpathsforsteamfromthesteamgeneratorstotheAFWpumpturbine.Theycloseduringanaccidenttoisolatethenon-affectedsteamgeneratorandpreventtheuncontrolledblowdownofbothsteamgenerators.Checkvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequiredisolatingtheassociatedsteamgeneratorfromthesteamsupply-linesandventingthepipingbetweentheclosedisolationvalveandthecheckvalve.ItisconsideredtobeimprudenttoisolatethesteamsupplytotheAFWpumpsduringoperationand,inaddition,itisundesirabletosubjectplantpersonneltothehazardsassociatedwithventinganysteamlineattheseoperatingconditions.Likewise,reverseflow(closure)testingofthesevalveswouldnecessitatepressurizingthedownstreamsidewithsteamfromtheothersteamgeneratorandopeninganupstreamvent.Fromtheaspectofpersonnelsafetyitisundesirabletosubjectplantpersonneltothepotentialhazardsassociatedwithventinglivesteamattheseoperatingconditions.D-70 RELIEFREQUESTNO.VR-40(cont.)REVISION51/06/95Thesetwocheck.valvesarepartialflowexercisedeachquarterandfullflowexercisedeachcoldshutdownsDuringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbeexercised(fullorpartial-stroke)toverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,Position2and,wasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-71 RELIEFREQUESTNO.VR-41REVISION51/06/95SXSXEK'ainSteam(8770-G-079,Sh1)V-08372V-08373Thesecheckvalvescloseduringanaccidenttoisolatethenon-affectedsteamgeneratorandpreventtheuncontrolledblowdownofbothsteamgeneratorsCheckvalvesshallbeexercisedatleastonceevery3months,exceptasprovidedbyIWV-3522.(IWV-3521)Verifyingclosureofthesevalvesduringplantoperationatnormaloperatingpressureswouldrequiredisolatingtheassociatedsteamgeneratorfromthesteamsupplylinesandventingthepipingbetweentheclosedisolation,valveandthecheckvalve.ItisconsideredtobeimprudenttoisolatethesteamsupplytotheAFWpumpsduringoperationand,inaddition,itisundesirabletosubjectplantpersonneltothehazardsassociatedwithventinganysteamlineattheseoperatingconditions.Likewise,reverseflow(closure)testingofthesevalveswouldnecessitatepressurizingthedownstreamsidewithsteamfromtheothersteamgeneratorandopeninganupstreamvent.Fromtheaspectofpersonnelsafetyitisundesirabletosubjectplantpersonneltothepotentialhazardsassociatedwithventinglivesteamattheseoperatingconditions.D-72 RELIEFREQUESTNO.VR-41(cont.)REVISION51/06/95Duringeachreactorrefueloutagesatleastoneofthesevalveswillbedisassembled,inspected,andmanuallystrokedtoverifyoperability.Followingreassembly,eachvalvewillbeexercised(fullorpartial-stroke)toverifyoperability.ThisalternatetestingagreeswiththeguidelinesofNRCGenericLetter89-04,'osition2andwasapprovedbyNRCSafetyEvaluationofSt.LucieUnit1InserviceTestingProgramReliefRequestsdatedSeptember27,1994.D-73 AppendixEValveProgramColdShutdownJustification REVISION501/6/95AppendixE:COLDSHUTDOWNJUSTIFICATIONSThisappendixisintendedtoprovidethejustificationforperformingvalveexercisingonlyatcoldshutdownconditionsaspermittedbyIWV-3412(a),3415and5322.Specificallyincludedinthiscategoryarethefollowing:Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardizetheimmediatesafetyoftheplantorsystemcomponents;r,Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguardsystemtobeinoperable;*Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransientthatcouldleadtoaplanttrip;or*Whentestrequirementsorconditionsareprecludedbysystemoperationoraccess.ColdshutdowntestingisperformedunderconditionsoutlinedinReliefRequestVR-1.PCV-1100EandPCV-1100FPressurizerSprayControlValvesDuringnormalpoweroperations,thesetwovalvesareusedtocontrolRCSpressurebyautomaticallythrottlingthesprayflowgoingintothepressurizer.Fullyopeningthesevalves,inpreparationfortimingthestrokeclosedtest,wouldhaveanimmediateandnegativeaffectonRCSpressure.Thegreatlyincreasedsprayflowwouldcondensepartofthesteambubbleinsidethepressurizer,causingthepressurizer'spressure,andthereforetheRCSpressure,todroprapidly.TheonlypossibletimetoexercisethesevalveswouldbewhiletheunitisinModes5or6whenthereisnosteambubbleinthepressurizer.
REVISION501/6/95V-1402andV-1404Power-QperatedReliefValvesDuetothepotentialimpactoftheresultingtransientshouldoneofthesevalvesopenprematurelyorstickintheopenposition,itisconsideredimprudenttocyclethemduringplantoperationwiththereactorcoolantsystempressurized.V-1441thru'-1446andV-1449ReactorCoolantSystemVentsThesevalvesareadministrativelycontrolledinthekey-lockedclosedpositionwiththepowersupplydisconnectedtopreventinadvertentoperation.SincetheseareClass1isolationvalvesforthereactorcoolantsystem,failureofavalvetocloseorsignificantleakagefollowingclosurecouldresultinalossofcoolantinexcessofthelimitsimposedbyTechnicalSpecification3.1.3leadingtoaplantshutdown.Furthermore,ifavalveweretofailopenorvalveindicationfailtoshow'thevalvereturnedtothefullyclosedpositionfollowingexercising,prudentplantoperationwouldprobablylikelyresultinaplantshutdown.SE-02-03andSE-02-04AuxiliaryPressurizerSprayValvesOpeningeitherofthesevalves(orfailureintheopenposition)duringplantoperationwouldcauseanRCSpressuretransientthatcouldpotentiallyadverselyaffectplantsafetyand-leadtoaplanttrip.Inaddition,thepressurizerspraypipingwouldbesubjectedtoundesirablethermalshock.E-2 REVISION501/6/95V-2431AuxiliaryPressurizerSprayCheckValveInordertotestthisvalve,eitherSE-02-03orSE-02-04mustbeopened.Openingeitherofthesevalves(orfailureintheopenposition)duringplantoperationwouldcauseanRCSpressuretransientthatcouldpotentiallyadverselyaffectplantsafetyandleadtoaplanttrip.Inaddition,thepressurizerspraypipingwouldbesubjectedtoundesirablethermalshock.V-2515andV-2516LetdownLineIsolationValvesClosingeitherofletdownlinefrompressurizerleveltrip.IfavalveshutdownwouldbethesevalvesduringoperationisolatesthetheRCSandwouldresultinundesirabletransientswiththepotentialforaplantfailedtoreopen,thenaexpeditedplantrequired.V-2505andSE-01-01RCPControlBleedoffIsolationValvesExercisingeitherofthesevalvestotheclosedpositionwhenanyofthereactorcoolantpumps(RCP's)areinoperationwouldinterruptflowfromtheRCPsealsandresultindamagetothepump(s).V-2501VolumeControlTankOutletValveClosingthisvalveduringoperationof'chargingpumpwouldisolatetheVCTfromthechargingpumpsuctionheaderdamaginganyoperatingchargingpumpsandinterruptingtheflowofchargingwaterflowtotheRCSwiththepotentialofRCStransientsandplanttrip.E-3 REVISION501/6/95V-3106andV-3107LPSIPumpDischargeCheckValvesDuringnormalplantoperation,theLPSIPumpscannotdevelopsufficientdischargepressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection.TheonlyothertestflowpathavailableisthroughtheshutdowncoolinglinerecirculatingtotheRWT.ThiswouldrequireopeningvalvesHCV-3657,V-3460andV-3459.Withthesevalvesopen,bothtrainsoftheLPSIsubsystemwouldbeinoperable,thus,thistestingschemeisunacceptable.V-3659andV-3660MinimumFlow/RecirculationLineIsolationValvesFailureofeitherofthesevalvesintheclosedpositionduringtestingwillrenderallunitsafetyinjectionpumpsinoperableduetothehighprobabilityofdamageshouldthesepumpsbestartedandoperatedwithoutsufficientflowforcoolingofpumpinternalcomponents.V-07009andV-3463SITankDrain/TestLinetoRWTCyclingthesemanualvalveswouldconstituteabreachofcontainmentintegrity,asdefinedinTechnicalSpecifications3.6.1.1,andthereforeopeningthesevalvesisprecludedinModes1,2,3,and4.V-3480,3481,3651,and3652ShutdownCoolingRCSIsolationValvesThesevalvesareprovidedwithelectricalinterlocksthatpreventopeningwheneverReactorCoolantSystempressureexceeds268psia.Thisprecludesexercisingthesevalvesinanyotherplantconditionthancoldshutdown.E-4 REVISION501/6/95V-3614,V-3624,V-3634andV-3644SITankDischargeIsolationValvesDuringnormalplantoperation,thesevalvesareadministrativelycontrolledtobelockedopenwiththeirbreakersrackedouttoensuretheyremainintheopenpositionwithnochanceofmisalignment.ThesevalvesarealsointerlockedsuchthattheywillautomaticallygoopenifRCSpressureisgreaterthan350psia.Therefore,thevalvescanonlybecycledduringModes4(<350psia),5,and6.V-6779NitrogenHeaderContainmentIsolationCheckBackflowtestingofV-6779requiresthatthedownstreamsideofthevalveispressurizedandtheupstreamsideisvented.Toventtheupstreamsideofthevalve,ablankflangemustberemovedandthedrainvalve,V-6340,opened.Withthedrainvalveopen,V-6779becomestheonlycontainmentisolationvalveforthispenetrationcausingcontainmentintegritytobebreached.Therefore,thebackflowtestcanonlybeperformedwhencontainmentintegrityisnotrequired(Modes5or6).HCV-08-1A&BMainSteamIsolationValvesDuringplantoperationatpower,closureofeitherofthese-valvesisnotpracticalasitwouldrequireisolatingasteamgeneratorwhichwouldresultinaseveretransientonthesteamandreactorsystemsandapossibleplanttrip.MV-09-07and08MainFeedwaterIsolationValvesDuringplantoperationatpower,closureofeitherofthesevalvesisnotpracticalasitwouldrequireisolatingasteamgeneratorwhichwouldresultinaseveretransientonthesteamandreactorsystemsandaplanttrip.E-5 REVISION501/6/95V-12174andV-12176AuxiliaryFeedwaterPumpSuctionCheckValvesFull-strokeexercisingofthesevalveswouldrequireoperationofarelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.Thesevalveswillbepartialstroketestedduringquarterlytestingviatheminimumflowrecirculationlines.V-09107,09123,and09139AuxiliaryFeedwaterPumpDischargeCheckValvesFull-.strokeexercisingofthesevalveswouldrequireoperationoftherelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.V-09119,09135,09151,and09157AuxiliaryFeedwaterSupplyCheckValvesFull-strokeexercisingofthesevalveswouldrequireoperationofarelatedauxiliaryfeedwaterpumpandinjectionofcoldwater(85deg-F)intothehot(450deg-F)feedwatersupplypiping.This,inturn,wouldresultinunacceptablethermalstressonthefeedwatersystempipingcomponents.HCV14lg2g6&7RCPCoolingWaterSupply/ReturnIsolationValvesThesevalvesarerequiredtobeopentoensurecontinuedcoolingofreactorcoolantpumpauxiliarycomponentsandthecontrolroddrives.ClosinganyofthesevalvesduringplantoperationwouldresultinsevereRCPandCRDdamageleadingtoplantoperationinapotentiallyunsafemodeandasubsequentplantshutdown.E-6 REVISION501/6/95HCV-14-3A&BShutdownHeatExchangerReturnValvesTestingeitherofthesevalvesduringplantoperationwouldresultinanunbalancedflowconditionintheaffectedCCWtrainanddecreasedflowtoessentialequipment.Thiscouldresultincomponentdamageoranundesirableplanttransient.V-27101andV-27102Thesearesimplecheckvalveswithnoexternalmeansofpositionindication,thustheonlypracticalmeansofverifyingclosureisbyperformingaleaktestorbackflowtest.Thiswouldrequireaconsiderableeffort,includingentryintothecontainmentbuilding,whichisimpracticalduringplantoperation.FCV-25-1thruFCV-25-6PrimaryContainmentPurgeandVentValvesThesevalvesare.administrativelymaintainedintheclosedpositionatalltimeswhentheplantisoperatinginModes1,2or3thustheyarenotrequiredtooperate(close)duringoperationalperiods.Duetothelargesizeofthesevalvesandthepotentialfordamageasaresultoffrequentcycling,itisnotprudenttooperatethemmorethanisabsolutelynecessary.V-25-20andV-25-21ContainmentVacuumBreakersThesevalvescanonlybeexercisedmanuallyrequiringdirectaccesstoeachvalve.Sincethesevalvesarelocatedwithinthecontainmentbuilding,accessislimitedandnotroutinelypractical.E-7 p'r