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{{#Wiki_filter:REVISION108/04/ | {{#Wiki_filter:REVISION108/04/94FLORIDAPOWERandLIGHTCOMPANYNUCLEARENERGYSERVICES700UniverseBoulevard JunoBeach,Florida33408SECONDTEN-YEARINSERVICE INSPECTION INTERVALINSERVICE TESTINGPROGRAMFORPUMPSANDVALVESST.LUCIENUCLEARPOWERPLANTUNITNO.2DATEOFCOMMERCIAL OPERATION: | ||
AUGUST8I1983FLORIDAPOWER&LIGHTP.O.BOX128FT.PIERCE,FL.34954NRCDOCKETNUMBER:DOCUMENTNUMBER:ST.LUCIEPLANTREVIEWSANDAPPROVALS: | |||
PREPAREDBY:PSLANTISTENGINEER(S)APPROVEDBY:SLEST6CODESUPERVISOR DATE:~94082'70298 940822PDRADOCK05000389PDR REVISION108/04/94TableofContentsTableofContentsRecordofRevisions 1.01.11.2Introduction ISTProgramTestingRequirement Guidelines ISTProgramImplementation | |||
==2.0 Applicable== | |||
Documents 3.03.13.23.33.43.54.04.14.24.34,44.54.6Inservice TestingProgramForPumpsCodeCompliance Allowable RangesofTestQuantities TestingIntervals PumpProgramTableReliefRequestsforPumpTestingInservice TestingProgramForValvesCodeCompliance TestingIntervals StrokeTimeAcceptance CriteriaCheckValveTestingValveProgramTableReliefRequestsForValveTesting10101010101010ABCDEFPumpProgramTablesPumpProgramRequestsForReliefValveProgramTablesValveProgramRequests, ForReliefColdShutdownJustifications Refueling OutageJustifications REVISION108/04/94Second10YEARSUBMITTAL RECORDOFREVISIONS REVISIONHLH~ZDESCRIPTION OFREVISIONDATEEKIS122DATEQFMXZSecond10YearSubmittal ProgramUpdate07/16/9305/02/9408/04/94 REVISION108/04/94INSERVICE TESTING(IST)PROGRAMPLANST.LUCIEUNIT | |||
==11.0INTRODUCTION== | ==11.0INTRODUCTION== | ||
REVISION108/04/94AppendixBPumpProgramReliefRequests RELIEFREQUESTNO.PR-1Revision108/04/94WITHDRAWN(Rev1,08/04/94) | Revision1oftheSt.LucieUnit2ASMEInservice Inspection (IST)Programwillbeineffectthroughtheendofthesecond120-month (10-year) intervalunlessrevisedandreissuedforreasonsotherthantheroutineupdaterequiredatthestartofthethirdintervalper10CFR50.55a(f). | ||
RELIEFREQUESTNO.PR-2Revision108/04/94VariousThefull- | Thesecondinspection intervalisdefinedasfollows:August8,1993August7,2003ThisdocumentoutlinestheISTProgramforSt.LuciePlant,Unit2,basedontherequirements oftheASMEBoilerandPressureVesselCode(theCode),SectionXI,1986Edition.References inthisdocumentto"IWP"or"IWV"correspond toSubsections IWPandIWV,respectively, oftheASMESectionXI,1986Edition,unlessotherwise noted.TheISTprogramhasbeenupdatedtoreplacetherequirements ofASME/ANSI OM-1981,Part1withASME/ANSI OM-1987,Part1,"Requirements forInservice Performance TestingofNuclearPowerPlantPressureReliefDevices". | ||
RELIEFREQUESTNO.PR-5Revision108/04/94BoricAcidMakeup(BAM)Pumps2Aand2B(2998-G-078,Sh121) | NRCSafetyEvaluations datedAugust23,1993,andMay2,1994determined certainreliefrequestswerenotrequiredpursuantto10CFR50.55a(f) | ||
RELIEFREQUESTNO.PR-8Revision108/04/94NBoricAcidMakeupPumps2Aand2B(2998-G-078,Sh121) | (4)(iv)whereitwasdetermined thattheproposedalternative isinaccordance withtherequirements ofthe1989EditionofSectionXI.The1989editionprovidesthattherulesforISTofpumpsandvalvesshallmeettherequirements setforthinASME/ANSI OMa-1988, Part6,"Inservice TestingofPumpsinLight-Water ReactorPowerPlants"andASME/ANSI OMa-1988, Part10,"Inservice TestingofValvesinLight-Water ReactorPowerPlants".Approvalwasgrantedtoconductinservice testsinaccordance withOM-6andOM-10,orportionsthereof,providedallrelatedrequirements aremet.Accordingly, theISTProgramfortheSt.LuciePlantisrevisedbythefollowing: | ||
RELIEFREQUESTNO.PR-10(cont.)Revision108/04/ | 1.Measurement ofbearingtemperatures asrequiredby'EIWP-3300and'KIWP-4310 arenotrequiredbyASME/ANSI OMa-1988, Part6,forinservice testingofpumps.Therefore, themeasurement ofbearingtemperatures isnotarequirement oftheISTProgram.2.Thevalveexercising requirements ofASME/ANSI OMa-1988, Part10,94.2.1.2and4.3.2.2willbefollowedasalternatives to'3IWV-3412(a) andIWV-3522notincluding IWV-3522(a) and(b). | ||
REVISION108/04/943.Theanalysisofleakagerateandcorrective actionrequirements ofASME/ANSI OMa-1988, Part10,94.2.2.3(e)and(f)willbefollowedasalternatives to'J[IWV-3426andIWV-3427. | |||
Theinservice testingrequirements identified inthisPlanwerepreparedtoverifytheoperational readiness ofISIClass1,2,and3pumpsandvalveswhichhaveaspecificfunctioninmitigating theconsequences ofanaccidentorinbringingthereactortoasafeshutdown. | |||
Inthisregard,thegeneralrequirements ofParagraphs IWP-1100andIWV-1100formthefollowing basicscopedocumentasitappliestoISIClass1,2,and3.Specifically components tobeincludedare:Centrifugal andpositivedisplacement pumpsthatarerequiredtoperformaspecificfunctioninshuttingdownthereactororinmitigating theconsequences ofan=accidentandthatareprovidedwithanemergency powersource,andValves(andtheiractuating andpositionindicating systems)whicharerequiredtoperformaspecificfunctioninshuttingdownthereactortothecoldshutdowncondition orinmitigating theconsequences ofanaccident. | |||
ThegeneralCoderequirements wereappliedtoSt.LucieUnit2usingasystematic approachbyfirstreviewing thefunctionofeachoftheplantsystemsastheyrelatetoalimitednumberofboundingaccidentscenarios'his revieweliminated systems(andassociated components) thatclearlydonotfitthebasicCodedefinitions including thatofISIboundaryclassifications Next,aseriesofrulesorguidelines weredeveloped thatestablished thecriteriatobeusedduringthereviewoftheremaining systemsandcomponents. | |||
Theserulesestablish thepoliciesandassumptions thatwereappliedtotheforegoing analysistoensureconsistency'ach oftheseareoutlinedbelow.Fromthispoint,inaseriesofsteps,eachoftheindividual components ineachoftheremaining significant safetysystems(andsupporting systems)wereevaluated withrespecttothefunctionofeachcomponent andtheneedforitsoperability asitrelatestothescopeofSectionXI.Thesestepsincluded: | |||
1.Areviewofflowdiagramsofeachsystemandidentification ofanycomponents (pumpsorvalves)that"could"potentially beincludedintheISTProgram REVISION108/04/94scope.Basedonthereviewer's experience, valvesusedformaintenance isolation, vents,drains,etc.wereexcluded. | |||
Typically, allpumps,power-operated valves,checkvalves,andsafetyvalvesremainedinthepopulation designated forfurtherevaluation. | |||
2.Eachsystemwasbrokendownbycomponent and,basedongeneralsystemoperational requirements, anarrative description ofeachcomponent's safetyfunction(s) duringtheproposedscenarios wasdrafted.3.Sequentially, plantdocuments thatrefertoordiscusssafety-related component orsystemfunctions werereviewedindetailandinformation fromthesedocuments wascomparedtothedraftsdeveloped intheabovestep2.Whereappropriate, corrections andreferences wereappliedtotheindividual narratives. | |||
Documents reviewedincludedthefollowing: | |||
a.b.C.d.e.f.g.h.UpdatedFinalSafetyAnalysisReportTechnical Specifications PlantSystemDescriptions (Training) | |||
Documents SpecialanalysesCommitment correspondence PlantOperating Procedures Emergency Operating Procedures AppendixJLeakrateTestProgram4.Basedonthefinalized component safetyfunctionevaluation derivedfromthedocumentreviewandthecorrected narratives, theISTProgramtestingrequirements werethenestablished byapplyingtheguidelines listedinSection1.1toeachone.5.Thefunctional description ofthesystemcomponents weresubjected toacomprehensive reviewbyknowledgeable plantpersonnel toconfirmtheaccuracyonthedocument. | |||
REVISION108/04/94ISTPROGRAMTESTINGREQUIREMENT GUIDELINES Thefollowing guidelines aresetforthforevaluation ofsystemcomponents (pumpsandvalves)withrespecttotheirinclusion intheSt.LucieUnit2ISTProgramandtowhatextenttestingwillbeperformed. | |||
Wheremultiplecomponents arecapableofperforming thesameequivalent andredundant specified function(eg.multiplevalvesclosinginseries)andwherethecomponents arenotsuppliedbyalternate andredundant powersupplies, onlyoneneedbeincludedintheandnotsimplyhavethecapability ofperformance. | |||
Thisexemption onlyapplieswherelicensing documents takecreditforthedesignedredundancy. | |||
Components performing a,redundant functionshallbeincludedinthetestingprogramif,intheprocessofanalysisorlicensing justification, theyarereliedupontobeoperable. | |||
TheSt.LucieUnit2FUSARandrelateddesignbasisdocuments shallbetheprimaryreferences fordetermining whichcomponents arerequiredtoperformspecified functions relatedtothespectrumofpredicated accidents. | |||
Althoughseveralotherplantsourcedocuments (Tech.Specs.andEOP's)identifyvariouscomponents thatmaybeimportant toplantsafetyoraretobeoperatedinconjunction withrecoveryfromanaccident, unlessspecificcreditistakenintheplantsafetyanalysis(orisimpliedintheanalysis) forapumporvalve,thecomponent neednotbeincludedintheISTprogram.Theexceptions tothisarethosecaseswheretheNRCimposestestrequirements attheirdiscretion. | |||
Valvesinstalled primarily forthepurposeofproviding convenient operational flexibility (eg.systemcross-connects) thatarenotrequiredtooperate,assumingthatthedesignated first-line systemsandcomponents operatesatisfactorily, neednotbeincludedintheISTProgram.Thisdoesnotexcludeactivevalvesthatcouldbecalleduponasaresultofoptionalsystemlineupsexistingpriortotheinitiation ofanaccident, Valvesthatareactuatedasaresultofasafetysystemautomatic responseshallbeincludedintheISTProgramtotheextentthatthetestingshallverifyvalveoperation requiredasaresultofthesafetysysteminput.Thisappliesonlyifvalvemovementisrequiredtosupportthosefunctions requiredasspecified bytheCode.Thisrequirement extendsonlytotestingdefined REVISION108/04/94bytheCodeandisnotintendedtoimplytheneedforverifying avalve'sresponsetoautomatic logicsystemoutput.Valveswhosesolefunctionistoprovidesystemorcomponent redundancy relatedtofailureofpassivecomponents neednotbeincludedifasetofalloftheactivecomponents (pumpsandvalves)neededtofulfillthespecified system(train)functionaretesteddoubleorunrelated simultaneous failuresneednotbeassumed.Insomecaseswhereprotection ofcriticalsystemsfrompassivefailuresisacommitment, thecomponents areincludedinthetestingprogram.Systemsafety/relief valvesshallbeincludedwherethefunctionofthevalveistoprovideoverpressure protection. | |||
AllvalvesincludedintheSt.LucieUnit2leakratetestingprogramcomplying withlOCFR50,AppendixJshallbeincludedintheISTProgramasCategoryAvalves.Allvalvesdesignated ashigh-lowpressureinterface valves(pressure isolation valves)shallbeincludedintheISTProgramasCategoryAorA/Cvalves.AnyactiveCategoryAvalveshallbedesignated fortesting(exercising) tothecloseddirections Whenavalve'snormalpositionduringoperation isitspositionrequiredtoperformitsdesignated safetyfunctionandvalvemovementmayberequiredduetoplantevolutions orpossiblerepositioning duringaccidentresponseorrecoveryoperations, thenperiodicexercising pertheCodeisrequired(i'hevalvecannotbeconsidered passive). | |||
Whereanair-operated valveisprovidedwithasimpleair-pilot valve,thepilotvalveneednotbespecifically includedintheISTProgramprovidedthatthetestingperformed onthemainvalveverifiestheproperoperation ofthepilotvalve.Controlvalvesarespecifically excludedfromtestingperIWV-1200(a);however,ifacontrolvalvemustchangepositiontosupportasafety-related functionandithasafailsafeposition, thenitmustbeincludedintheISTProgramandtestedtotheextentpractical. | |||
Steamturbinegovernorvalvesareconsidered tobeanintegralpartoftheturbineand,assuch,arenotincludedintheISTProgram. | |||
REVISION108/04/9413.Checkvalvesareincludedwhereavalveservesastheonlyeffective boundarybetweenpipingassociated withanecessary safetyfunctionandnon-safety grade(non-seismic)piping.Failureofpassivesystemcomponents isassumedonlyfornon-safety gradesystems.14.Whereavalveperformsasafetyfunctioninbothdirections (openandclosed)exercising inbothdirection isrequiredasdescribed inReference 1.Forthesepower-operated valves,stroketimemeasurements inbothdirections wouldberequired. | |||
15.Pumpsandvalveswhoseonlysafetyfunctionispredicated onplantshutdownandrecoveryfromafirepercommitment madeasaresulton10CFR50,AppendixRarenotincludedintheISTProgram.16.Pumpsandvalvesthatarenotcategorized asISIClass1,2,or3neednotbeincludedintheISTProgram.17.Checkvalvesthathaveasafetyfunctiontocloseshouldbeevaluated withrespecttocategorization asCategoryA/CversusCwithrespecttothefollowing issues:a.Whethertheflowrequirements forconnected systemscanbeachievedwiththemaximumpossibleleakagethroughthecheckvalve.b.Theeffectontheperformance ofothercomponents andsystemsduetothereducedflowresulting fromtheleakage.c.Theconsequences oflossoffluidfromthesystem.d.Theeffectthatbackflowthroughavalvemayhaveonpipingandcomponents, suchastheeffectofhightemperature andthermalstresses. | |||
e.Theradiological exposuretoplantpersonnel andthepubliccausedbytheleak. | |||
REVISION108/04/941.2ISTPROGRAMIMPLEMENTATION A.Therequirements oftheASMECodeSectionXI,subsections IWPandIWV,andOM-1-1987 areimplemented atSt.LuciethroughtheQualityInstructions andAdministrative Procedures. | |||
Theseinstructions andprocedures addresstheCoderequirements, thedepartment(s) responsible, andthestepsthatmustbeperformed tosatisfythoserequirements. | |||
B.EachofthepumpsandvalvesincludedintheUnit2ISTprogramaretestedbyaUnit2testprocedure. | |||
Thesetestprocedures areintheformofeitherPumpDataSheets,ValveDataSheets,procedure appendixes, orindividual testprocedures. | |||
Alltestprocedures andtheirsetpoints mustbereviewedandapprovedbythePlant'sProcedure ChangeRequest(PCR)process.ThePCRprocessincludesa10CFR50.59reviewandfinalreviewbythePlantsFacilityReviewGroup(FRG)~C.PlantChangesorModifications (PC/M)arereviewedbyEngineering and/ortheplantsTechnical Staffforanypotential effectstotheISTprogram.Ifchangestotheprogramarerequired, theplantTechnical Staffand/orotherapplicable departments willinitiatetheappropriate testprocedure changesviaaPCR.AnychangestotheISTprogramwillbemadebytheTechnical Staff.Periodically, thesechangeswillbeincorporated intoanewrevisiontotheISTprogramandsubmitted totheFRGforreview.'Following theFRGreview,thenewISTrevisionwillbeissued. | |||
REVISION108/04/942.0APPLICABLE DOCUMENTS ThisProgramPlanwasdeveloped pertherequirements andguidanceprovidedbythefollowing documents: | |||
2.1Title10,CodeofFederalRegulations, Part502.2NRCRegulatory Guides-Division12.3StandardReviewPlan,3.9.6,"Inservice TestingofPumpsandValves2.4FinalSafetyAnalysisReport.,St.LucieUnit22.5St.LuciePlantUnit2Technical Specifications ASMEBoilerandPressureVesselCode,SectionXI,1986Edition2.7NRCGenericLetter89-04,"Guidance onDeveloping Acceptable Inservice TestingPrograms" 2.8MinutesofthePublicMeetingsonGenericLetter89-042.92.102.11Supplement toMinutesofthePublicMeetingsonGenericLetter89-04byJ,G.Partlow,26September 1991RequestforIndustry/NRC-Accepted Interpretation on"Practical" asAppliedbyASMECodeSectionXI,IWV-3412(a)byMartinJ.Virgilio, Assistant DirectorforRegionsIVandV.ASMEBoilerandPressureVesselCode,SectionXI,1989Edition.2'2ASME/ANSI OM-1987,Part1,"Requirements forInservice Performance TestingofNuclearPowerPlantPressureReliefDevices". | |||
2.132.142.152.16NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993.ASME/ANSI OMa-1988, Part6,"Inservice TestingofPumpsinLight-Water ReactorPowerPlants".ASME/ANSI OMa-1988, Part10,"Inservice TestingofValvesinLight-Water ReactorPowerPlants".NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994. | |||
REVISION108/04/943'INSERVICE TESTINGPROGRAMFORPUMPS3.1CodeCompliance ThisISTProgramforpumpsmeetstherequirements ofSubsection IWPoftheCodeandanyinterpretations oradditional requirements imposedbyReference 2.7.Wheretheserequirements havebeendetermined tobeimpractical, conformance wouldcauseunreasonable hardshipwithout,anycompensating increaseinsafety,oranalternative testprovidesanacceptable levelofqualityandsafety,relieffromCoderequirements isrequested pursuanttotherequirements of10CFR50.55a(f) | |||
(iii)andReference 2.7.3.2Allowable RangesofTestQuantities Theallowable rangesfortestparameters asspecified inTableIWP-3100-2 willbeusedforallmeasurements ofpressure, flow,andvibration exceptasprovidedforinspecificreliefrequests. | |||
Insomecasestheperformance ofapumpmaybeadequatetofulfillitssafetyfunctioneventhoughtheremaybeavalueofanoperating parameter thatfallsoutsidetheallowable rangesassetforthinTableIWP-3100-2. | |||
Shouldsuchasituation arise,anexpandedallowable maybedetermined, onacase-by-case basis,inaccordance withIWP-3210. | |||
3.3TestingIntervals Thetestfrequency forpumpsincludedintheProgramwillbeassetforthinIWP-3400andrelatedreliefrequests. | |||
Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit2Technical Specifications toprovideforoperational flexibility. | |||
3.4PumpProgramTableAppendixAliststhosepumpsincludedintheISTProgramwithreferences toparameters tobemeasuredandapplicable requestsforrelief.3.5ReliefRequestsforPumpTestingAppendixBincludesallreliefrequestsrelatedtopumptesting. | |||
REVISION108/04/944.0INSERVICE TESTINGPROGRAMFORVALVES4.1CodeCompliance ThisISTProgramforvalvesmeetstherequirements ofSubsection IWVoftheCodeandanyinterpretations oradditional requirements imposedbyReference 2.7.Wheretheserequirements havebeendetermined tobeimpractical, conformance wouldcauseunreasonable hardshipwithoutanycompensating increaseinsafety,oranalternative testprovidesanacceptable levelofqualityandsafety,relieffromCoderequirements isrequested pursuanttotherequirements of10CFR50.55a(f)(iii) andReference 2.7.4.2TestingIntervals Thetestfrequency forvalves(excluding safety/relief valves)includedintheProgramwillbeassetforthinIWV-3400andrelatedreliefrequests. | |||
Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit2Technical Specifications toprovideforoperational flexibility. | |||
Wherequarterly testingofvalvesisimpractical orotherwise undesirable, testingmaybeperformed duringcoldshutdownperiodsaspermitted byIWV-3412(a). | |||
Justifications forthisdeferredtestingareprovidedinAppendixE.4.3StrokeTimeAcceptance CriteriaWhenrequired, theacceptance criteriaforthestroketimesofpower-operated valveswillbeassetforthinReference 2,7.4,4CheckValveTestingFull-stroke exercising ofcheckvalvestotheopenpositionusingsystemflowrequiresthatatestbeperformed wherebythepredicted fullaccidentcondition flowratethroughthevalvebeverifiedandmeasured. | |||
Anydeviation tothisrequirement mustsatisfy,therequirements ofReference 2.7,Positionl.4.5ValveProgramTableAppendixCliststhosevalvesincludedintheISTProgramwithreferences torequiredtesting,respective testintervals, andapplicable requestsforrelief.4.6ReliefRequestsforValveTestingAppendixDincludesallreliefrequestsrelatedtovalvetesting.10 REVISION108/04/94AppendixAPumpProgramTables REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-PUMPTABLESSt.LucieNuclearPlant-Unit2PAGE'IcR&KD.PUMPNUMBERNumerical designator indicated ontherespective flowdiagram.DESCRIPTION Genericname/function ofthepump.CLCOORDISIClassification pertheassociated ISIboundarydrawing(s) | |||
Corresponds to'heflowdiagramcoordinates ofthepump.TestParameters Thetableindicates bya"Y"(yes)or"N"(no)thatthespecificparameter ismeasured, evaluated, andrecordedpertheapplicable Coderequirement. | |||
Ifa"N"isindicated, theassociated reliefrequestnumberisalsonotedinthesamecolumn.PR-XXWhereindicated thisreferstothespecificreliefrequest(SeeAppendixB)relatedtoanydeviation regarding themeasurement oranalysisofaparameter. | |||
REVISION108/04/94AppendixBPumpProgramReliefRequests RELIEFREQUESTNO.PR-1Revision108/04/94WITHDRAWN (Rev1,08/04/94) | |||
RELIEFREQUESTNO.PR-2Revision108/04/94VariousThefull-scale rangeofeachinstrument shallbethreetimesthereference valueorless.(IWP-4120) | |||
Table1WP-4110-1 requirestheaccuracyofinstruments usedtomeasurespeedtobeequaltoorbetterthan+2percentbasedonthefullscalereadingoftheinstrument. | |||
Thismeansthattheaccuracyofthemeasurement canvaryasmuch+6percent,assumingtherangeoftheinstrument extendedtotheallowedmaximum.ThisISTpumpparameter isoftenmeasuredwithportabletestinstruments wherecommercially available instruments donotnecessarily conformtotheCoderequirements forrange.Inthiscase,highqualitycalibrated instruments willbeusedwherethe"reading" accuracyisatleastequaltotheCode-requirement forfull-scale accuracy. | |||
Thiswillensurethatthemeasurements arealwaysmoreaccuratethantheaccuracyasdetermined bycombining therequirements ofTableIWP-4110-1andParagraph IWP-4120. | |||
Wheneverportableinstruments areusedformeasuring pumpspeed,theinstrument (s)willbesuchthatthe"reading" accuracyisasfollowsatleast+2percent.VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a)(3)(i).B-2 RELIEFREQUESTNO.PR-3Revision108/04/94WITHDRAWN (Rev0,07/16/93) | |||
B-3 RELIEFREQUESTNO.PR-4Revision108/04/94Auxiliary Feedwater (AFW)Pumps2Athru2C(2998-G-080, Sh2)INXIEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | |||
(IWP-3300) | |||
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1) | |||
Thereareonlytwopractical flowpathsavailable forperforming inservice testingoftheAFWPumps.Theseincludetheprimaryflowpathintothemainfeedsupplylinesandthencetothesteamgenerator, andtheminimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstothecondensate storagetank.Theformerisprovidedwithflowratemeasuring instrumentation howeverthemini-recirc lineisafixedresistance circuitwithnoflowinstrumentation. | |||
Pumpingfromtheauxiliary feedwater systemintothesteamgenerators duringplanthotoperation isimpractical andundesirable forthefollowing reasons:*Duringauxiliary feedwater injection viathemainfeedwater lineswhiletheplantisoperating atpower,alargetemperature differential (approximately 375deg-F)couldexistthatwouldresultinsignificant thermalshockandfatiguecyclingofthefeedwater pipingandsteamgenerator nozzles.*Basedontheexpecteddurationofthetestingandtheflowrateofthepumps(150to200gpm),itisexpectedthatthecooldownofthesteamgenerator wouldinducecooldownandcontraction ofthereactorcoolantsystemresulting inundesirable reactivity variations andpowerfluctuations. | |||
B-4 RELIEFREQUESTNO.PR-4(cont.)Revision108/04/94ERNDuringquarterly testingoftheAFWpumpswhilethepumpsareoperating throughthefixed-resistance mini-recirc line,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
Duringtestingperformed atcoldshutdown, pumpdifferential | |||
: pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
Testingduringcoldshutdowns willbeonafrequency determined byintervals betweenshutdowns asfollows:Forintervals of3monthsorlonger-eachshutdown. | |||
Forintervals oflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.pvNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9. | |||
RELIEFREQUESTNO.PR-5Revision108/04/94BoricAcidMakeup(BAM)Pumps2Aand2B(2998-G-078, Sh121)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | |||
(IWP-3300) | |||
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1) | |||
Therearethreepractical flowpathsavailable forperforming inservice testingoftheBAMPumps.Theseincludetheprimaryflowpathintothechargingpumpsuctionheader,arecirculation lineleadingbacktotherefueling watertank,andtheminimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstotheBAMTanks.Noneoftheseflowpaths,istotallysatisfactory forthefollowing reasons:Operating theBAMPumpsdischarging intothechargingpumpsuctionheaderrequirestheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Thisrapidinsertion ofnegativereactivity wouldresultinarapidRCScooldownanddepressurization. | |||
Alargeenoughboronadditionwouldresultinanunscheduled planttripandapossibleinitiation ofSafetyInjection Systems.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldbeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreaseitsboronconcentration. | |||
"B-6 RELIEFREQUESTNO.PR-5(cont,)Revision108/04/94Thesecondcircuitrecirculates watertotheRefueling WaterTank(RWT)ortheVolumeControlTank(VCT).Duringnormalplantoperation atpoweritisundesirable topumptotheRWTanddepletetheBAMTankinventory. | |||
OneofthetwoBAMTanksismaintained atTech.Spec.levelwhiletheotherisusedasrequiredforplantoperation. | |||
TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintained atalevelnearthetopofthetank.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatability wouldbequestionable. | |||
*Theminimum-flow recirculation flowpathisafixedresistance circuit.Noflowratemeasuring instrumentation isinstalled inthislinc'umping boricacidfromtanktotankwouldbepossiblebuttheflowrateswouldbesmall,limitingpumpoperation tothehighheadsectionofthepumpcurve~Inaddition, oneofthetwoBAMTanksismaintained atTech.Spec.levelwhiletheotherisusedasrequiredfornormalplantoperation. | |||
TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintained atalevelnearthetopofthetank.Thisnarrowbandlimitstheamountthatcanbepumpedtoitorfromittoonlyafewhundredgallons.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatability wouldbequestionable. | |||
B-7 RELIEFREQUESTNO.PR-5(cont.)Revision108/04/94Duringquarterly testingoftheBAMpumps,whilethepumpsareoperating throughthefixed-resistance mini-recirc line,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP;3200. | |||
Duringtestingperformed ateachreactorrefueling outage,pumpdifferential | |||
: pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-8 RELIEFREQUESTNO.PR-6Revision108/04/94Containment Spray(CS)Pumps2Aand2B(2998-G-088) | |||
Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | |||
(IWP-3300) | |||
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1) | |||
Therearetwopractical flowpathsavailable forperforming inservice testingoftheCSPumps.Theseincludeonethatpumpsboratedwater,fromtheRWTtotheRCSviathelow-pressureinjection headerandtheother,minimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstotheRWT.Thefirstwouldrequiremodifying theshutdowncoolinglineupwhileincoldshutdown; however,theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction. | |||
Thus,theonlypractical timefortestingthesepumpsviathisflowpathisduringrefueling outageswhenwaterfromtheRWTisusedtofilltherefueling cavity.Theminimum-flow recirculation flowpathisafixedresistance circuitcontaining aflowlimitingorificehowevernoflowratemeasuring instrumentation isinstalled. | |||
TheCSpumpsareoperatedthroughthefixed-resistance mini-recirclineduringthequarterly pumptesting.Pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
B-9 RELIEFREQUESTNO.PR-6(cont.)Revision108/04/94Duringthepumptestingperformed eachreactorrefueling, pumpdifferential | |||
: pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-10 RELIEFREQUESTNO.PR-7Revision108/04/94WITHDRAWN (Rev0,07/16/93) | |||
RELIEFREQUESTNO.PR-8Revision108/04/94NBoricAcidMakeupPumps2Aand2B(2998-G-078, Sh121)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-'3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300) | |||
Thesysteminstallation doesnotprovideanymechanism formeasuring pumpsuctionpressures, andthus,therequirement formeasuring suctionpressureandpumpdifferential pressures cannotbesatisfied. | |||
Ameasureofpumpsuctionpressurecan,however,bedetermined byacalculation usingtheheightofliquidintheboricacidmakeuptanks.Sincethereisessentially fixedresistances betweenthetanksandthepumpsthiswillprovideaconsistent valueforsuctionpressures'ince thetanklevelsarenotexpectedtovarysignificantly duringthetests,tanklevelsandassociated calculations willonlybetakenonceduringeachtestinsteadofpriortopumpoperation andduringoperation asrequiredbyTableIWP-3100-1.Theboricacidmakeuppumpsuctionpressures willbecalculated basedontheheightofliquidintheassociated tankonceduringeachinservice test.Subsequently, thesecalculated valueswillbeusedtodetermine pumpdifferential pressures forevaluation ofpumpparameters. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a)(3) | |||
(i).B-12 RELIEFREQUESTNO.PR-9Revision108/04/94HighPressureSafetyInjection (HPSI)Pumps2Aand2B(2998-G-078, Sh130)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | |||
(IWP-3300) | |||
BAIDuringquarterly testingoftheHPSIPumps,thepumpscannotdevelopsufficient discharge pressuretoovercomereactorcoolantsystem(RCS)pressure. | |||
Flowisroutedthroughaminimumflowtestlineleadingtotherefueling watertank(RWT).Thislinehasnoinstalled flowratemeasuring'nstrumentation andmeasuring flowrateduringquarterly testingisnotpractical. | |||
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpstotheRCSisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.3.NRCGenericLetter89-04,Position9,allowselimination ofminimumflowtestlineflowratemeasurements providing inservice testsareperformed duringcoldshutdowns orrefueling underfullorsubstantial flowconditions wherepumpflowrateisrecordedandevaluated. | |||
ALTDuringquarterly testingoftheHPSIPumps,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
Duringtestingperformed ateachreactorrefueling, pumpdifferential | |||
: pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
B-13 Revision108/04/94RELIEFREQUESTNO.'PR-9(cont.)NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-14 Revision108/04/94RELIEFREQUESTNO.PR-10LowPressureSafetyInjection (LPSI)Pumps2Aand2B(2998G078'h131)REMENT'ach inservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | |||
(IWP-3300) | |||
Duringquarterly testingoftheLPSIpumps,thepumpscannotdevelopsufficient discharge pressuretoovercomereactorcoolantsystem(RCS)pressure. | |||
Flowisroutedthroughaminimumflowtestlineleadingtotherefueling watertank(RWT).Thislinehasnoinstalled flowratemeasuring instrumentation andmeasuring flowrateduringquarterly testingisnotpractical. | |||
Duringcoldshutdown, theLPSIpumpsareusedforresidualheatremoval.Thesubstantial flowtestscanbeperformed atthistime.Pumpdifferential pressureandflowratewillberecorded. | |||
However,inducedvibrations inthesystempipingwhilethereactorcoolantpumps(RCPs)arerunningmaskanymeaningful LPSIpumpvibration data.Duringquarterly testingoftheLPSIPumps,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
Substantial flowtestingwillbeperformed duringcoldshutdowns. | |||
Pumpdifferential | |||
: pressure, flowrate,andvibration (ifRCPssecured)willbemeasuredandevaluated perIWP-3100andIWP-3200. | |||
Testingwillbeonafrequency determined byintervals betweenshutdowns asfollows:Forintervals of3monthsorlonger-eachshutdown. | |||
Forintervals oflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest. | |||
RELIEFREQUESTNO.PR-10(cont.)Revision108/04/94VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9. | |||
RELIEFREQUESTNO.PR-11Revision108/04/94IntakeCoolingWaterPumps2A,2Band2C(2998-G-082) | RELIEFREQUESTNO.PR-11Revision108/04/94IntakeCoolingWaterPumps2A,2Band2C(2998-G-082) | ||
RELIEFREQUESTNO.PR-15Revision108/04/ | EEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1. | ||
REVISION108/04/ | (IWP-3300) | ||
Pumpinletpressureshallbemeasuredbeforestartingapumpandduringthetest.(TableIWP-3100-1) | |||
Thepumpslistedaboveareverticallineshaftpumpssubmerged intheintakestructure withnopractical meansofmeasuring pumpinletpressure. | |||
Theinletpressure, however,canbedetermined bycalculation using,asinput,themeasuredheightofwaterabovethepumpinletasmeasuredattheintake.Duringeachinservice test,thewaterlevelintheintakepitremainsrelatively | |||
: constant, thusonlyonemeasurement oflevelandtheassociated suctionpressurecalculation needbeperformed. | |||
Duringtestingofthesepumps,onevalueofinletpressurewillbecalculated basedonwaterlevelattheintakestructure. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a) | |||
(3)(i).B-17 RELIEFREQUESTNO.PR-12Revision108/04/94EReactorCoolantChargingPumps2A,2B,and2CETINXIRIRMThefrequency responserangeofthereadoutsystem(forinstrument usedtomeasurevibration amplitude) shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotational speed.(IWP-4520(b)) | |||
Thereactorcoolantchargingpumpsoperateatapproximately 210-215rpmwhichequatestoarotational frequency of3'0Hz.Theone-halfminimumspeedfrequency responserequiredforthevibration instrumentation correlates to1.75Hz(105cpm).Thevibration instrumentation presently inuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integrator frequency responseisessentially flatdownto120cpm(cyclesperminute)wherethedisplayed outputoftheinstrument slightlyincreases toapproximately | |||
+ldBat100cpm.The-3dBfrequency responseisreachedatapproximately 54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequency probenominally rateddownto270cpm(-3dB).Thisisonlyslightlyhigherthantheexpectedrotational (1X)speedofthechargingpump(205210cpm).The1X(205cpm.)vibration frequency components willbesomewhatattenuated bytheprobes,butnotcutoff.Overallvibration levelswouldstillshowanincreasing valueifsomeproblemdeveloped whosecharacteristic frequency was1Xrunningspeed.Therearevirtually nomechanical degradations whereonlyasub-synchronous vibration component woulddeveloponthechargingpumps.Forexample:a.Oilwhirl(0.38X-0.48X)isnotapplicable toahorizontal, triplex,reciprocating pump.B-18 RELIEFREQUESTNO.PR-12(cont.)Revision108/04/94b.Alightrub/impactcouldgenerate0.5X(102.5cpm)vibration components, butwouldalsousuallygenerateasequenceofintegerandhalfintegerrunningspeedcomponents. | |||
Aheavyrubgenerates increased integervaluesofmultiplerunningspeedcomponents, aswellasprecessing the1Xphasemeasurement. | |||
Ineithercasetheoverallvibration levelwouldstillshowanincreasefromboththeattenuated sub-synchronous and1Xvibration components aswellasthehigherharmonicvibration components. | |||
c.Looseness inthepowertrainwouldlikelybeindicated byincreasing 1Xand2Xvibration components. | |||
Thesesignalswouldbeslightlyattenuated butagainnotcompletely cutoff.Basedontheaboveinformation, itisourevaluation thatthepresentuseoftheBentlyNevada270cpmprobeswiththeportableTK-81instrument iscapableofcollecting sufficiently reliabledatatoidentifychangesfrombaselinereadingstoindicatepossibleproblemswiththepumps.Duringtestingofthesepumps,thevibration instrumentation usedwillbetheBentlyNevadamodelTK81with270cpmprobesorequivalent. | |||
VThisrevisedreliefrequestispendingNRCapproval. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval. | |||
B-19 RELIEFREQUESTNO.PR-13Revision108/04/94WITHDRAWN (Rev1,08/04/94) s-20 Revision108/04/94RELIEFREQUESTNO.PR-14Hydrazine Pumps2Aand2BIREIREMENThefrequency responserangeofthereadoutsystem(forinstrument usedtomeasurevibration amplitude) shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotational speed.(IWP-4520(b)) | |||
Thehydrazine pumpsarecharacterized asmeteringpumpsandoperateat,extremely slowspeed(aslowas37rpm).Thisequatestoarotational frequency of0.62Hz.Inaccordance withtheASMECode,thefrequency responseforthevibration instruments wouldhavetobeonehalfofthisor0.31Hz.Instruments satisfying thisrequirement forthehydrazine pumpsarecommercially unavailable. | |||
Thevibration instrumentation presently inuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integrator frequency responseisessentially flatdownto120cpm(cyclesperminute)wherethedisplayed outputoftheinstrument slightlyincreases toapproximately | |||
+1dBat100cpm.The-3dBfrequency responseisreachedatapproximately 54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequency probenominally rateddownto270cpm(-3dB).TINDuringtestingofthesepumps,thevibration instrumentation usedwillbetheBentlyNevadamodelTK81with270cpmprobesorequivalent. | |||
pvThisrevisedreliefrequestispendingNRCapproval. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval. | |||
RELIEFREQUESTNO.PR-15Revision108/04/94MPNENTContainment SprayPumps2Aand2B(2998-G-088) | |||
HiPressSafetyInject.Pumps2Aand2B(2998-G-078 SH130)LoPressSafetyInject.Pumps2Aand2B(2998-G-078 SH130)EIEIEEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300) | |||
Thesysteminstallation does.notprovideanyinstalled suctiongages.Ameasureofpumpsuctionpressurecan,however,bedetermined bycalculation usingtheheightofliquidintherefueling watertank(RWT).Duringthequarterly pumptests,theflowratethroughthesuctionpipingisverylow,therefore, theamountofheadlossisnegligible. | |||
Thisisnotthecaseduringthesubstantial flowtests.Theflowratesusedduringthesetestswouldcauseanoticeable headlossinthesuctionpiping.SinceRWTlevelisnotexpectedtovarysignificantly duringthequarterly tests,RWTlevelandassociated calculations willonlybetakenonceduringeachquarterly testinsteadofpriortopumpoperation andduringoperation asrequiredbyTableIWP-3100-1. | |||
Duringthequarterly pumptests,thepumps'uction pressures willbecalculated basedontheheightofliquidintheassociated RWT.Subsequently, thesecalculated valueswillbeusedtodetermine pumpdifferential pressures forevaluation ofpumpparameters. | |||
Duringthecoldshutdownorrefueling substantial flowtestingofthesepumps,temporary suctiongageswillbeinstalled tomeasurepumpsuctionpressure. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50'5a(a)(3)(i).B-22 RELIEFREQUESTNO.PR-16Revision108/04/94WITHDRAWN (Rev0,07/16/93) | |||
B-23 RELIEFREQUESTNO.PR-17Revision108/04/94Hydrazine Pumps2Aand2B(2998-G-088) | |||
RTEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300) | |||
Symmetrical dampingdevicesoraveraging techniques maybeusedtoreduceinstrument fluctuations towithin2%oftheobservedreading.(IWP-4150) | |||
ThePSLUnit2Hydrazine pumpsarereciprocating positivedisplacement pumpswithvariablespeedcontrol.Thesepumpsarenormallyinastandbycondition andareonlyoperatedduringsurveillance testing.Theyareclassified asmeteringpumpsandaredesignedtoaccurately displaceapredetermined volumeofliquidinaspecificperiodoftime.Thepumphasasingleplungerandmakesonlyonesuctionstrokeandonlyonedischarge strokeduringeachcycle.Thepumpsoperateataveryslowspeed(aslowas37rpm)toproducetheTechnical Specification requiredHydrazine flowrateof0.71to0.82gpm.Pumpflowiscontinuously accelerating anddecelerating following asinusoidal waveform. | |||
Eachcycleofthepumpisapproximately 1.6secondsindurationwithnoflowproducedduringthepumps0.8secondsuctionstroke.Thischaracteristic intermittent andoscillating flowrateisobviously impractical tophysically dampentheobservedreadingtowithin2%usingsymmetrical dampingdevices.Theinstalled flowinstrumentation hasbeendemonstrated tobeinadequate forinservice testingpurposes'his instrumentation utilizesadifferential pressureorificelocatedinthesuctionlinecommontobothpumpstomeasureflow.Flowthroughthisorificepulsatessharplywitheachstrokeofthepump.Thefloworificealsosensespressurefeedbackduringeachcycleofthepumpstroke.Thisfeedbackhasbeendetermined tobeechoesofthepressurepulsations producedbythepumpstrokewhichhavereflected backtotheorificebythesystempipingandvalves.B-24 Revision108/04/94Refueling outagetestinghasdemonstrated thattechniques usedtoaveragetheindicated flowreadingsareinconsistant andinaccurate whencomparedtoactualflow.Trendingtheflowrateusingtheinstalled instrumentation isimpractical duetotheinherentinaccuracies andinstability inmeasuring thepumpflowasdescribed above.Flowinstrumentation whichcanaccurately measuretheHydrazine pumpintermittent andoscillating flowratehasnotbeenlocated.Evenifsuchinstrumentation werefoundtobeavailable thecostsassociated withprocuring andinstalling suchinstrumentation couldnotbejustified. | |||
TheHydrazine pumpsarestandbypumps.Thereisvirtually nomeansforthemechanical condition ofthepumptobecomedegradedbetweenrefueling outageswiththepumponlyrunforquarterly surviellance testing.Theflowrateofthepumpscanbeaccurately obtainedbycollecting thepumpsoutputinacontainer andmeasuring it.Severalflowtestsperhydrazine pumpshavebeenperformed. | |||
Thepumpdischarge wasdirectedtoacontainer ofaknownvolume.Theamountoftimetofillthecontainer wasmeasuredandthenusedtocalculate anaverageflowrateforthepump.Acorrelation betweenpumprpmandaverageflowratewasdeveloped andcomparedtotheexpectedvalue.Themeasuredandtheexpectedcorrelations betweenrpmandflowratewereincloseagreement. | |||
Theexpectedcorrelation wasbaseduponpistondiameter, pistonstroke,andpumprpm.Basedupontheseresults,hydrazine pumpflowratecanbeaccurately setbyselecting theproperpumprpm.Frequentperformance oftheabovementioned flowtestingcannotbeperformed. | |||
Hydrazine isahighlyflammable liquidwithcumulative toxicaffectswhenabsorbedthroughtheskin,inhaled,oringested. | |||
Ithasalsobeenidentified asaknowncarcinogen. | |||
Flowmeasurement performed eachrefueling outageisconsidered byPSLtobeappropriate fordetecting anypumphydraulic degredation. | |||
B-25 Revision108/04/94Duringeachrefueling outageatleastonetestmeasuring actualpumpflowwillbeperformed foreachpumptoverifyproperperformance. | |||
Duringthequarterly pumptests,eachpump'srpmwillbemeasuredtoverifytherequiredflowrateof0.71to0.82gpm.Pumpdischarge pressureandvibration willbemeasuredduringboththequarterly andrefueling outagetests.ThisrevisedreliefrequestispendingNRCapproval. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval. | |||
a-26 REVISION108/04/94AppendixCValveProgramTables REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE:1LEZzRHKVALVENUMBERTheplantalpha-numerical designator forthesubjectvalveCOORDCLCATSIZETYPEA/PThecoordinate locationofthevalveonthedesignated drawingTheISIClassification ofthevalveaspertherespective ISIboundarydrawingsThevalvecategoryperParagraph IWV-2200Thevalve'snominalsizeininchesThevalvetypeTheactive(A)orpassive(P)determination forthevalve.ACT.TYPEThevalveactuatortypeasfollows:AODOMOMANPOS/ASOAir-operated Diaphragm-operated Electricmotor-operated ManualvalvePiston-operated Self-actuated Solenoid-operated NORMPOS.REMINDFAILMODEDesignates thenormalpositionofthevalveduringplantoperation atpowerNotesifavalvehasremotepositionindication Identifies thefailuremode(openorclosed)foravalve.FAIindicates thevalvefails"asis". | |||
REVISION108/04/94FloridaPower6LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE2EXAMIdentifies thetestrequirements foravalveasfollows:CV/cCV/0CV/POECEOFSINSPPECPISLT-1SLT-2SRVCheckvalveexercisetoclosedposition. | |||
Checkvalvefull-stroke exercisetoopenposition. | |||
Checkvalvepartial-stroke exercisetoopenposition. | |||
Exercisetoclosedposition. | |||
ForallcategoryAorBpower-operated valvesstroketimeswillbemeasuredunlessexcludedbyanassociated reliefrequest.Exercisevalvetoverifyproperoperation andstrokingwithnostroketimemeasurements. | |||
Requiresobservation ofsystemparameters orlocalobservation ofvalveoperation. | |||
Exercisetoopenposition. | |||
ForallcategoryAorBpower-operated valvesstroketimeswillbemeasuredunlessexcludedbyanassociated reliefrequest.FailsafetestDisassembly andinspection ofcheckvalvesPartialclosureexerciseforpower-operatedvalvesPositionindication verification Seatleakratetestper10CFR50,AppJSeatleakratetestforpressureisolation valves.Setpointcheckforsafety/relief valves REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE:3TESTFREQTherequiredtestintervalasfollows:QRCS2YRFSDQuarterly (duringplantoperation) | |||
ColdshutdownasdefinedbyTechnical Specification Every2yearsEachreactorrefueling outage(cycle).Inthecasewherethisisdesignated forsafety/relief valvesANSI/ASME OM-1-1981 Disassemble, inspect,andmanuallyexerciseonevalvefromspecified groupeachreactorrefueling outageRELIEFREQReferstothespecificreliefrequestassociated withtheadjacenttestrequirement. | |||
(SeeAppendixD) | |||
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:DATE:08/04/94PAGE:9PaID:2998-G- | FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION: | ||
DATE:08/04/94PAGE:9PaID:2998-G-078 SH121(cont)SYSTEM:CHEMICALANDVOLUHECONTROLACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSV-2507H-72B0.750GLOBEADOLOYESFOECQRPI2YV-2508C-62B3.000GATEAMOCYESFAIEOQRPI2YV-2509C-72B3.000GATEAHOCYESFAIEOQRPI2YV-2514C-32B3.000GATEAMOCYESFAIEOQRPI2YV-2524YESFC,ECFSPISLT-1F-72A0.750GLOBEADO0CSCS2Y2YV-2525E-43B4.000GATEAMOCYESFAIECQRPI2YV-2526E-32C4.000CHECKAS/ACNOCV/0RFCV/POCSV-2650B-42B1.000GLOBEADO0YESFCECFSPIQRQR2YV-2651D-42B1.000GLOBEADO0YESFCECFSPIQRQR2YV~2674F-43C4.000CHECKAS/A0NOCV/0QR | |||
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:1DATE:08/04/94PAGE:14PaID:2998-G- | FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION: | ||
1DATE:08/04/94PAGE:14PaID:2998-G-078 SH130(cont)SYSTEH:SAFETYINJECTION SYSTEMACT.NORHREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSV-3439F-32C1.000RELIEFAS/ACNOSRVRFV-3444E-72B14.000GATEAMOLOYESFAIECQRPI2YV-3456G-42B10.000GATEAMOLCYESFAIEOQRPI2YV-3457F-22B10.000GATEAMOLCYESFAIEOQRPI2YV-3463G"22A2.000GATEAHANLCNOEE'RSLT"12YV-3466G-13C1.500RELIEFAS/ACNOSRVRFV-3495G-62BF000GLOBEASOLOYESFCECQRFSQRPI2YV-3496G-52B6.000GLOBEASOLOYESFCECQRFSQRPI2YV-3507V-3513F-12C1.000RELIEFAS/ACNOSRVG-32C2.000RELIEFAS/ACNOSRVRFRFV-3517H-62B12.000GATEAMOLCYESFAIEOPIQR2YV-3518V-3519C-32B2.000GLOBEAMANCNOFAIEEQRD-42B2.000GLOBEAHANCNOFAIEEQRV-3522B-42C3.000CHECKAS/ACNOCV/CCSCV/O"RFCV/POCSV-3523A-22B3.000GLOBEAMOLCYESFAIECQREOQRPI2Y | |||
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:1DATE:08/04/94PAGE:16P6ID:2998-G- | FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION: | ||
1DATE:08/04/94PAGE:16P6ID:2998-G-078 SH131SYSTEM:SAFETYINJECTION SYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSHCV-3615H-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3616G-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3617G-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3625F-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3626E-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV"3627E-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3635D-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3636C-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3637C-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3645B-72B6.000GLOBEAMOCYESFAIEOPIQR2YHCV-3646A-72B2.000GLOBEAMOCYESFAIEOPIQR2YHCV-3647A"72B2.000GLOBEAMOCYESFAIEOQRPI2YV-3113G-72C2.000CHECKAS/ACNOCV/0RFCV/POCSV-3114H-72C6.000CHECKAS/ACNOCV/CCV/0CSCSV"3124F-72C6.000CHECKAS/ACNOCV/CCSCV/0CS | |||
FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucreNuclearPlant-Unit2REVISION:1DATE:08/04/94PAGE:19P6ID:2998-G- | FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucreNuclearPlant-Unit2REVISION: | ||
1DATE:08/04/94PAGE:19P6ID:2998-G-078 SH132SYSTEM:SAFETYINJECTION SYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSHCV-3618E-71B1.000GLOBEADOCYESFCECQRFSQRPI2YHCV-3628E-41B1.000GLOBEADOCYESFCECFSPIQRQR2YHCV-3638HCV-3648B-71B1.000GLOBEADOCYESFCECFSPIB-41B1.000GLOBEADOCYESFCECFSPIQRQR2YQRQR2YSE-03-1AF-32B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE"03-1BF-72B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-03-1CC-72B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-03-1DC-32B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YV-03002F-73C1.000CHECKAS/ACNOCV/0CSV-03003V-03004V-03005C-73C1.000CHECKAS/ACNOF-43C1.000CHECKAS/ACNOC-43C1.000CHECKAS/ACNOCV/0CV/0CV/0CSCSCSV-3211H-62C1.500RELIEFAS/ACNOSRV | |||
FLORIDAPONERANDLIGHTCOHPANYVALVETABLESSaintLucieNuclearPlant-Onit2REVISION:1DATE:08/04/94PAGE:23'6ID:2998-G- | FLORIDAPONERANDLIGHTCOHPANYVALVETABLESSaintLucieNuclearPlant-Onit2REVISION: | ||
1DATE:08/04/94PAGE:23'6ID:2998-G-078 SH153SYSTEM:SAMPLINGSYSTEMACT.NORMREHFAILTESTRELIEFVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODEEXAMFREQREQ.REMARKSSE-05-1AG-72A0.375GLOBEASOCYESFCECQRFSQRPI2YSLT-12YSE-05-1BF-72A0.375GLOBEASOCYESFCECQRFSQRPI2YSLT-12YSE-05-1CE-72A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YSE-05-1DC"72A0.375GLOBEASOCYESFCECFSPISlT"1QRQR2Y2YSE-05-1EG-52A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5200F-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5201E-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5202D-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5203F-52A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2Y | |||
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:1DATE:08/04/94PAGE:33P4ID:2998-G- | FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION: | ||
1DATE:08/04/94PAGE:33P4ID:2998-G-082 SYSTEM:INTAKECOOLINGWATERSYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSMV-21-2E-53B24.000BUTFLYAMO0YESFAIECQRPI2YMV-21-3E-43B24.000BUTFLYAMO0YESFAIECQRPI2YSR-21196SR-21243C-43C3.000RELIEFAS/ACNOSRVC-53C3.000RELIEFAS/ACNOSRVRFTCV-14-4A B-33B30.000BUTFLYAPO0NOFOEOFSQRQRTCV-14-4B B-43B30.000BUTFLYAPO0NOFOEOFSQRQRV-21162H-43C30.000CHECKAS/A0NOCV/CCV/0QRQRV-21205H-63C30.000CHECKAS/A0NOCV/CCV/0QRQRV-21208H-13C30.000CHECKAS/A0NOCV/CCV/0QRQR | |||
FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:1DATE:08/04/94PAGE:45P4ID:2998-G- | FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION: | ||
1DATE:08/04/94PAGE:45P4ID:2998-G-092 SH1SYSTEH:MISC.SAHPLINGSYSTEMSACT.NORMREHFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSFCV-26-1G-22A1.000GLOBEADO0YESFCECQRFSQRPI2YSLT-12YFCV-26-2G-42A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-3H-22A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-4H-42A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-5I-22A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-61-42A1.000GLOBEADO0YESFCECFSPISLT"1QRQR2Y2YFSE-27-10 B-132A0.375GLOBEASOCYESFCECEOFSPISLT-1QRQRQR2Y2YFSE-27-11 C-132A0.375GLOBEASOCYESFCECEOFSPISLT-1QRQRQR2Y2Y | |||
REVISIONl08/04/94AppendixDValveProgramRequestsforRelief Revision108/04/94RELIEFREQUESTNO.VR-1WITHDRAWN(Rev1,08/04/94) | REVISIONl08/04/94AppendixDValveProgramRequestsforRelief Revision108/04/94RELIEFREQUESTNO.VR-1WITHDRAWN (Rev1,08/04/94) | ||
Revision108/04/94RELIEFREQUESTNO.VR-2WITHDRAWN(Rev1,08/04/94)D-2 Revision108/04/94BYSX12L' | Revision108/04/94RELIEFREQUESTNO.VR-2WITHDRAWN (Rev1,08/04/94) | ||
Revision108/04/94RELIEFREQUESTNO.VR-11WITHDRAWN(Rev1,08/04/94)D-12 Revision108/04/94RELIEFREQUESTNO.VR-12WITHDRAWN(Rev1,08/04/94)D-13 Revision108/04/94RELIEFREQUESTNO.VR-13BEZEL' | D-2 Revision108/04/94BYSX12L'ELIEF REQUESTNO.VR-3VariousVariousVariousThisisagenericrequestforreliefIf,forpower-operated valves,anincreaseinstroketimeof50%ormoreforvalveswithfull-stroke timeslessthanorequalto10secondsisobserved, thetestfrequency shallbeincreased toonceeachmonthuntilcorrective actionistaken,atwhichtimetheoriginaltestfrequency shallberesumed(IWV-3417(a)) | ||
Revision108/04/94RELIEFREQUESTNO.VR-13(cont.) | EIThestroketimemeasurements takenduringtestingoffast-acting valves(thoselessthan2seconds)aresubjecttoconsiderable variation duetoconditions unrelated tothematerialcondition ofthevalve(eg.testconditions, operatorreactiontime).Inaccordance withGenericLetter89-04,Position6,analternate methodofevaluating stroketimesisconsidered acceptable. | ||
Revision108/04/94RELIEFREQUESTNO.VR-14ZXZZEK' | Thestroketimeevaluation forthosevalvesdesignated inthePlantTestProcedures as"fast-acting" willnotaccountforsuccessive increases ofmeasuredstroketimeperIWV-3417(a) withthechangeintestfrequency asrequired. | ||
Revision108/04/94RELIEFREQUESTNO.VR-14(cont.) | Inlieuofthis,theassignedmaximumlimitingvalueofstroketimewillbeestablished at2seconds.Uponexceeding the2-secondlimit,thevalvewillbedeclaredinoperable andcorrective actiontakeninaccordance withIWV-3417(b) | ||
REVISION108/04/94HCV-14-1,2,6&7RCPCoolingWaterSupply/ | .D-3 Revision108/04/94VAL'RCSafetyEvaluation ofSt.LucieUnit2lnservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position6.D-4 Revision108/04/94RELIEFREQUESTNO.VR-4WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94HCV-18- | D-5 Revision108/04/94RELIEFREQUESTNO.VR-5WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/ | D-6 Revision108/04/94RELIEFREQUESTNO.VR-6WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94V-2177V-2190V-2191v-2526ChemicalandVolumeControl(2998-G-078,Sh121)V-2177andV- | D-7 Revision108/04/94RELIEFREQUESTNO.VR-7WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94V-3101GXSX12L'.SafetyInjection(2998-G- | D-8 Revision108/04/94RELIEFREQUESTNO.VR-8WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94V-3524v-3525V-3526V-3527GYKXK' | D-9 Revision108/04/94RELIEFREQUESTNO.VR-9WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94BEEZER'akeupWater(2998-G-084)V- | D-10 Revision108/04/94RELIEFREQUESTNO.VR-10WITHDRAWN (Rev1,08/04/94) | ||
REVISION108/04/94V-07129V-07143GYGXlRL' | Revision108/04/94RELIEFREQUESTNO.VR-11WITHDRAWN (Rev1,08/04/94) | ||
D-12 Revision108/04/94RELIEFREQUESTNO.VR-12WITHDRAWN (Rev1,08/04/94) | |||
D-13 Revision108/04/94RELIEFREQUESTNO.VR-13BEZEL'afety Injection (2998-G-078 Sh132)V-3215V-3225v-3235V-3245A/CThesevalvesopentoprovideflowpathsfromthesafetyinjection tankstotheRCSandclosetoisolatethetanksfromthehighpressureofthereactorcoolantsystemandthesafetyinjection headers'ECheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Fullstrokeexercising ofthesevalveswouldrequireinjecting fromatankundernominalpressureintoade-pressurized reactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheSITpressureisinsufficient toovercomereactorcoolantsystempressure. | |||
TheinjetheTheinitintThetheonlypractical methodforflowtestingthesafetyctionheadercheckvalvesistodumpthecontentsofSITintothereactorcoolantsystemwhileinMode6.SITdumpisperformed byestablishing adequateialconditions ofwaterlevelandnitrogenpressureheSITwithitsdischarge isolation'alve closed.SITdischarge isolation valveisthenopenedtodumpcontentsoftheSITtothetherefueling cavity. | |||
Revision108/04/94RELIEFREQUESTNO.VR-13(cont.)Thecheckvalvescannotbefullstrokedopenbypassingthemaximumrequiredaccidentcondition flowtosimulatetheLOCAflow.UnderalargebreakLOCAaccidentconditions, themaximum(peak)flowratethroughthesevalveswouldbeapproximately 20,000gpm.Therequiredtestconditions fordeveloping thisfullaccidentflowcannotbeestablished. | |||
TheSITdischarge isolation valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.Theresulting discharge flowratewouldonlyincreasegradually duetothelongstroketimeofthedischarge isolation valve.Theflowratewouldnotbeanywherenearthepeakblowdownrateof20,000gpmexpectedduringalargebreakLOCA.Analysishasshownthatthecheckvalvescanbefullyexercised openwiththelowerthanaccidentcondition flowduringaSITdumptest.Non-intrusive testequipment employing acousticandeddy-current technology canbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Eachofthesevalvesareinstalled inidentical orientation andexposedtothesameoperating conditions. | |||
FP&Lhasreviewedtheoperating andmaintenance historyofthesevalvesandsimilarvalvesusedthroughout theindustryundercomparable conditions. | |||
Basedonthesereviews,thereisnoevidenceofvalvedegradation withrespecttotheirabilitytoopen"andsatisfactorily passtherequiredflow.Itisapparentfromthefailuredatathattheprimarymodeoffailureisrelatedtovalveleakagebothpasttheseatandexternalthroughthebody-bonnet andhingepingasketjoints.Itshouldalsobenotedthatthesevalvesarenotsubjected toanysignificant flowduringplantoperation aswellasmaintenance periods;thusitisunlikelythatthesevalveswouldexperience anyservice-related damageorwear.D-15 Revision108/04/94RELIEFREQUESTNO.VR-13(cont.)Duringeachrefueling outage,eachofthesevalveswillbestrokedtofullyexercisethecheckvalvesopen.Non-intrusive testequipment employing acousticandeddy-currenttechnology willbeusedto'verifythecheckvalvesarestrokedfullyopenduringthesetests.Shouldthealternate testingdescribed abovebedetermined tobeimpractical oranextremehardshipthefollowing willbeperformed inplaceoftheabovedescribed testing.Duringeachrefueling outage,eachofthesevalveswillbepartial-stroke exercised. | |||
Eachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbereinitiated. | |||
Assurance ofproperreassembly willbeprovidedbyperforming apartial-flow testpriortoreturning avalvetoservicefollowing disassembly. | |||
Thealternate testingdescribed inthisreliefrequesthasbeenrevisedtocomplywithNRCGenericLetter89-04,Positions 1or2. | |||
Revision108/04/94RELIEFREQUESTNO.VR-14ZXZZEK'afety Injection (2998-G-078 Sh132)V-3217V-3227V-3237V-3247A/CN'hesevalvesopentoprovideflowpathsfromthesafetyinjection headerstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Fullstrokeexercising ofthesevalveswouldrequireinjecting fromatankundernominalpressureintoade-pressurized reactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheSITpressureisinsufficient toovercomereactorcoolantsystempressure. | |||
Theonlypractical methodforfullflowtestingofthesafetyinjection headercheckvalvesistodumpthecontentsoftheSITintothereactorcoolantsystemwhileinMode6.Shutdowncoolingflowrates arenotsuficient tofullyopenthevalves.TheSITdumpisperformed byestablishing adequateinitialconditions ofwaterlevelandnitrogenpressureintheSITwithitsdischarge isolation valveclosed.TheSITdischarge isolation valveisthenopenedtodumpthecontentsoftheSITtothetherefueling cavity. | |||
Revision108/04/94RELIEFREQUESTNO.VR-14(cont.)Thecheckvalvescannotbefullstrokedopenbypassingthemaximumrequiredaccidentcondition flowtosimulatetheLOCAflow.Under'alargebreakLOCAaccidentconditions, themaximum(peak)flowratethroughthesevalveswouldbeapproximately 20,000gpm.Therequiredtestconditions fordeveloping thisfullaccidentflowcannotbeestablished. | |||
TheSITdischarge isolation valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.Theresulting discharge flowratewouldonlyincreasegradually duetothelongstroketimeofthedischarge isolation valve.Theflowratewouldnotbeanywherenearthepeakblowdownrateof20,000gpmexpectedduringalargebreakLOCA.Analysishasshownthatthecheckvalvescanbefullyexercised openwiththelowerthanaccidentcondition flowduringaSITdumptest.Non-intrusive testequipment employing acousticandeddy-current technology canbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Eachofthesevalvesareinstalled inidentical orientation andexposedtothesameoperating conditions. | |||
FP&Lhasreviewedtheoperating andmaintenance historyofthesevalvesandsimilarvalvesusedthroughout theindustryundercomparable conditions. | |||
Basedonthesereviews,thereisnoevidenceofvalvedegradation withrespecttotheirabilitytoopenandsatisfactorily passtherequiredflow.Itisapparentfromthefailuredatathattheprimarymodeoffailureisrelatedtovalveleakage-bothpasttheseatandexternalthroughthebody-bonnet andhingepingasketjoints.D-18 Revision108/04/94RELIEFREQUESTNO.VR-14(cont.)ETETINDuringeachrefueling outage,eachofthesevalveswillbestrokedtofullyexercisethecheckvalvesopen.Non-intrusive testequipment employing acousticandeddy-currenttechnology willbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Shouldthealternate testingdescribed abovebedetermined tobeimpractical oranextremehardshipthefollowing willbeperformed inplaceoftheabovedescribed testing.Eachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbereinitiated. | |||
Assurance ofproperreassembly willbeprovidedbyperforming apartial-flow testpriortoreturning avalvetoservicefollowing disassembly. | |||
RVAL'healternate testingdescribed inthisreliefrequesthasbeenrevisedtocomplywithNRCGenericLetter89-04,Positions 1or2.D-19 Revision108/04/94RELIEFREQUESTNO.VR-15WITHDRAWN (Rev1,08/04/94) | |||
D-20 Revision108/04/94RELIEFREQUESTNO.VR-16GXSX12LPrimaryContainment Valves6-inchesNPSandlargersubjecttoleakageratetestingper10CFR50,AppendixJ.A/C(CheckValves)A(Motor-operated valves)Eachofthesevalvesisdesignated asacontainment isolation valvemaintaining theleakrateintegrity oftheprimarycontainment inthecaseofanaccident. | |||
Theleakagerateforvalves6-inchesnominalpipesizeandlargershallbeevaluated perSubsection IWV-3427(b).(IWV-3521) | |||
Theusefulness ofapplyingthisrequirement doesnotjustifytheburdenofcompliance. | |||
Thispositionissupported bytheGenericLetter89-04,Position10.Leakratetestresultsforcontainment isolation valvessix(6)inches nominalpipesizeandgreaterwillbeevaluated perIWV-3426andIWV-3427(a) however,therequirements ofIWV-3427(b) willnotbeapplied.Thissatisfies therequirements ofGenericLetter89-04,Position10.D-21 Revision108/04/94RELIEFREQUESTNO.VR-16(cont.)VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position10.D-22 Revision108/04/94RELIEFREQUESTNO.VR-17WITHDRAWN (Rev0,07/16/93) | |||
D-23 Revision108/04/94RELIEFREQUESTNO.VR-18WITHDRAWN (Rev1,08/04/94) | |||
D-24 Revision108/04/94RELIEFREQUESTNO.VR-19WITHDRAWN (Rev1,08/04/94) | |||
D-25 Revision108/04/94RELIEFREQUESTNO.VR-20BXZGBL.Containment Spray(2998-G-088) | |||
V-07119V-07120Y'hesevalvesopentoprovideflowpathsfromtherefueling watertank(RWT)tothecontainment sprayandsafetyinjection suctionheaders.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Fullstrokeexercising ofthesevalveswouldrequiresimultaneous operation ofoneHPSIpumpandoneLPSIpumpinjecting intotheRCS,andonecontainment spraypumpinjecting intoitssprayheadertoverifythemaximumdesignaccidentflow.Suchatestisnotpractical duringanyplantoperational modes.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised viarecirculation throughtheminimumflowtestcircuitsofthevarioussystems.Thevalveswillalsobepartial-,stroke exercised duringtheseriesofpumpsubstantial flowtestsandcheckvalveexercises performed eachrefueling outage.D-26 Revision108/04/94RELIEFREQUESTNO.VR-20(cont.)Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-27 Revision108/04/94RELIEFREQUESTNO.VR-21WITHDRAWN (Rev1,08/04/94) | |||
D-28 Revision108/04/94RELIEFREQUESTNO.VR-22BXZZE'2L', | |||
Containment Spray(2998-G-088) | |||
V-07172V-07174Thesevalvesopentoprovideflowpathsfromthecontainment sumptothecontainment sprayandsafetyinjection suctionheadersduring.recirculation. | |||
EICheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyINV-3522. | |||
(IWV-3521) | |||
Therearenoprovisions forfullorpartialflowexercising thesevalves.Inordertopassfullflowthroughthesevalves,thecontainment sumpmustbefloodedandfollowedbysimultaneous operation ofoneHPSIpumpinjecting intotheRCSandonecontainment spraypumpinjecting intoitssprayheader.Suchatestisnotpractical duringanyplantoperational mode.Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillberepeated. | |||
D-29 Revision108/04/94RELIEFREQUESTNO.VR-22(cont.)VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-30 Revision108/04/94RELIEFREQUESTNO.VR-23Containment Spray(2998-G-088) | |||
V-07192V-07193Thesevalvesopentoprovideflowpathsfromtherespective containment sprayheaderstothecontainment sprayrings.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Fullstrokeexercising ofthesevalveswouldrequireoperating eachcontainment spraypumpatnominalaccidentflowrate.Sinceexercising thesevalvesthroughthenormalcontainment sprayflowpathwouldresultinsprayingdownthecontainment, thisisconsidered impractical. | |||
Sinceflowthroughthesevalvesisnotpossible, non-intrusive testmethods,shouldtheybecomeapproved, wouldnotworkonthesecheckvalves.D-31 Revision108/04/94RELIEFREQUESTNO.VR-23(cont.)NTIDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated. | |||
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-32 Revision108/04/94RELIEFREQUESTNO.VR-24WITHDRAWN (Rev1,08/04/94) | |||
D-33 Revision108/04/94RELIEFREQUESTNO.VR-25WITHDRAWN (Rev0,07/16/93) | |||
D-34 Revision108/04/94RELIEFREQUESTNO.VR-26WITHDRAWN (Rev0,07/16/93) | |||
D-35 Revision108/04/94RELIEFREQUESTNO.VR-27BXST32L', | |||
Feedwater System(2998-G-080, Sh2)Nv-09303V-09304V-09305TY'hesevalvesopentoprovideflowpathsfromtheauxiliary feedwater pumpdischarge tothecondensate storagetanktoensureadequatepumpcoolingduringlowflowconditions. | |||
Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Thereisnoflowrateinstrumentation available toverifyvalvefull-stroke exercising ofthesevalvesasrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements. | |||
D-36 Revision108/04/94RELIEFREQUESTNO.VR-27(cont.)NTDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability, Shouldavalveunderinspection befoundtobeinoperable, thentheothertwovalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated. | |||
NRCSafetyEvaluation ofSt.LucieUnit2.Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-37 Revision108/04/94RELIEFREQUESTNO.VR-28WITHDRAWN (Rev1,08/04/94) | |||
D-38 Revision108/04/94RELIEFREQUESTNO.VR-29WITHDRAWN (Rev1,08/04/94) | |||
D-39 Revision108/04/94RELIEFREQUESTNO.VR-30GXZGBL.SafetyInjection System(2998-G-078, Sh130)V-3102V-3103Thesevalvesopentoprovideformini-flow recirculation flowpathsfromthehighpressuresafetyinjection p'umpstotherefueling watertank.Thisminimumflowthroughtherespective pumpsremovespumpheatintheeventofoperation underlowornoflowconditions. | |||
Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
FRELIEF'here isnoinstalled flowrateinstrumentation available toverifyvalvefull-stroke exercising asrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised (open)viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements. | |||
D-40 Revision108/04/94RELIEFREQUESTNO.VR-30(cont.)Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Inspections shallbescheduled suchthatvalveswillbecheckedinarotatingsequencesuchthateachvalveissubjecttoinspection approximately onceeverythree(3)years.Shouldavalvebefoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillberesumed.PPVAL'RCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-41 Revision108/04/94RELIEFREQUESTNO.VR-31MOGUL.MainSteam(2998-G-079, Sh1)V-08130v-08163.Thesevalvesopentosupplysteamtothe2CAuxiliary Feedwater Pump(AFW)turbine.Thesevalvesclosetopreventunrestricted releaseofsteamfromanunaffected steamgenerator intheeventofasteamline ruptureupstreamofanMSIV.MENCheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522. | |||
(IWV-3521) | |||
Thereisnopractical meansorprovision forpressurizing thepipingdownstream ofthesevalvesinordertoverifyclosureofthesevalves.LTDuringthequarterly testofthe2CAFWpump,thesevalveswillbepartial-stroke exercised. | |||
Duringeachcoldshutdownoutagebothofthesevalveswillbefull-strokeexercised duringtheAFWpumpsubstantial flowtests.D-42 Revision108/04/94RELIEFREQUESTNO.VR-31(cont.)ENATDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability. | |||
Shouldavalveunderinspection befoundtobeinoperable, thentheremaining othervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated. | |||
Following valvere-assembly notestingispossible(partial-flow orleaktesting)priortoplacingthevalvesinservice,thusnonewillbeperformed. | |||
VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-43 Revision108/04/94RELIEFREQUESTNO.VR-32WITHDRAWN (Rev1,08/04/94) | |||
D-44 Revision108/04/94WITHDRAWN (Rev1,08/04/94) | |||
D-45 Revision108/04/94RELIEFREQUESTNO.VR-34WITHDRAWN (Rev1,08/04/94) | |||
D-46 REVISIONl08/04/94AppendixEValveProgramColdShutdownJustifications REVISION108/04/94AppendixE:COLDSHUTDOWNJUSTIFICATIONS Thisappendixisintendedtoprovidethejustification forperforming valveexercising onlyatcoldshutdownconditions aspermitted byIWV-3412(a), | |||
3415and3522.Specifically includedinthiscategoryarethefollowing: | |||
Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardize theimmediate safetyoftheplantorsystemcomponents; Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguard systemtobeinoperable; Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransient thatcouldleadtoaplanttrip;orWhentestrequirements orconditions areprecluded bysystemoperation oraccess.V-1460thruV-1466ReactorCoolantSystemGasVentsThesevalvesareadministratively controlled inthekey-lockedclosedpositionwiththepowersupplydisconnected topreventinadvertent operation. | |||
SincetheseareClass1isolation valvesforthereactorcoolantsystem,failureofavalvetocloseorsignificant leakagefollowing closurecouldresultinalossofcoolantinexcessofthelimitsimposedbyTechnical Specification 3.1.3leadingtoaplantshutdown. | |||
Furthermore, ifavalveweretofailopenorvalveindication failtoshowthevalvereturnedtothefullyclosedpositionfollowing exercising, prudentplantoperation wouldprobablylikelyresultinaplantshutdowns REVISION108/04/94V-1474andV-1475Power-Operated ReliefValvesDuetothepotential impactoftheresulting transient shouldoneofthesevalvesopenprematurely orstickintheopenposition, itisconsidered imprudent tocyclethemduringplantoperation withthereactorcoolantsystempressurized. | |||
V-2522LetdownLineContainment Isolation ValveClosingthisvalveduringoperation isolatestheletdownlinefromtheRCSandwouldresultinundesirable pressurizer leveltransients withthepotential foraplanttrip.Ifavalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired. | |||
V2177'2190'2191andV2526CVCSBoronAdditionValvesCV/POtestisaddressed inRefueling OutageJustification V-2501VolumeControlTankOutletValveCyclingthisvalveduringoperation ofachargingpumpwouldisolatetheVCTfromthechargingpumpsuctionheaderdamaginganyoperating chargingpumpsandinterrupting theflowofchargingwaterflowtotheRCSwiththepotential ofRCStransients andplanttrip.V-2505andV-2524RCPControlBleedoffIsolation ValvesExercising eitherofthesevalvestotheclosedpositionwhenanyofthereactorcoolantpumps(RCP's)areinoperation wouldinterrupt flowfromtheRCPsealsandresultindamagetothepump(s).E-2 REVISION108/04/94SE-02-03andSE-02-04Auxiliary Pressurizer SprayValvesOpeningeitherofthesevalves(orfailureintheopenposition) duringplantoperation wouldcauseanRCSpressuretransient thatcouldpotentially adversely affectplantsafetyandleadtoaplanttrip.Inaddition, thepressurizer spraypipingwouldbesubjected toundesirable thermalshock.V-2431Auxiliary Pressurizer SprayCheckValveInordertotestthisvalve,eitherSE-02-03orSE-02-04mustbeopened.Openingeitherofthesevalves(orfailureintheopenposition) duringplantoperation wouldcauseanRCSpressuretransient thatcouldpotentially adversely affectplantsafetyandleadtoaplanttrip.Inaddition, thepressurizer spraypipingwouldbesubjected toundesirable thermalshock.V-2440ChargingPumpDischarge CheckValveToSafetyInjection Openingthisvalverequiresoperating achargingpumpanddischarging intotheRCSviathesafetyinjection nozzles.Thermalcyclingofthesafetyinjection nozzlesisundesirable andshouldbeavoided.V-2515andV-2516LetdownLineIsolation ValvesClosingthesevalvesduringoperation isolatestheletdownlinefromtheRCSandwouldresultinundesirable pressurizer leveltransients withthepotential foraplanttrip.Ifavalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired. | |||
V-2523ChargingLineIsolation ValveClosingthisvalveduringoperation isolatesthechargingpumpsfromtheRCSandwouldresultin.undesirable pressurizer leveltransients withthepotential foraplanttripandpotential damagetothechargingpumps.Ifthevalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired. | |||
E-3 REVISION108/04/94V-3101SafetyInjection SupplyToVolumeControlTankCV/POtestisaddressed inRefueling OutageJustification. | |||
V-3106andV-3107LPSIPumpDischarge CheckValvesDuringnormalplantoperation, theLPSIPumpscannotdevelopsufficient discharge pressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection. | |||
Thesevalveswillbepartialflowexercised quarterly andfullflowexercised eachcoldshutdown. | |||
V-3414andV-3427HPSIPumpDischarge CheckValvesCV/POtestisaddressed inRefueling OutageJustification. | |||
V-3522andV-3547HPSIHotLegInjection CheckValveCV/POandCV/Ctestsareaddressed inRefueling OutageJustification. | |||
V-3113,V-3133,V-3143,andV-3766HPSIColdLegInjection CheckValvesCV/POtestisaddressed inRefueling OutageJustification. | |||
V-3114,V-3124,V-3134,andV-3144LPSIColdLegInjection CheckValvesDuringnormalplantoperation, theLPSIPumpscannotdevelopsufficient discharge pressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection. | |||
Theclosuretestscanonlybeperformed attheendoftheoutageafterthevalveshavebeenexercised openearlierbythepartialstrokeopentests.E-4 REVISION108/04/94V-3480,3481,3651,and3652ShutdownCoolingRCSIsolation ValvesThesevalvesareprovidedwithelectrical interlocks thatpreventopeningwheneverReactorCoolantSystempressureexceeds275psia.Thisprecludes exercising thesevalvesinanyplantcondition otherthancoldshutdown. | |||
V3524'3525~V3526/V3527HPSIHotLegInjection CheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Performing leaktestsofV-3524andV-3526involvesaconsiderable effort.Thetestconnection forthesevalvesarelocatedinahighradiation areainthepipepenetration room,andoneofthetwoconnections islocatedover12feetabovethefloor.Testingduringoperation wouldconstitute anunreasonable burdenontheplantstaff.Theothercheckvalves,V-3525andV-3527,haveupstreampressurealarms.Shouldeithervalveleakby,thepressureinstruments woulddetecttheincreaseandalarminthecontrolroomwhenthealarmsetpointisexceeded. | |||
Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents. | |||
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing. | |||
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.PriortoenteringMODE2whenevertheplanthas=beeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.E-5 REVISION108/04/943.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4.Following valveactuation duetoflowthroughthevalve.CV/POtestisaddressed inRefueling OutageJustification. | |||
V-3545ShutdownCoolingCrossConnectValveThebreakerforthisvalveisrequiredtobedeenergized exceptduringplantcoldshutdownorrefueling modestomeetpositionC.ltoRegulatory Guide1.63revision2.Thisistoprotectthemechanical integrity ofthevalveselectrical penetration assemblyshouldthemaximumshort-circuit vstimecondition occurgivensinglerandomfailureofcircuitoverloadprotection devices.V-03002thruV-03005SafetyInjection Tank(SIT)DrainLineCheckValvesExercising thesevalvesrequiresdrainingofeachoftheSITs.Thisisnotconsidered tobeanappropriate norprudentactivitytoperformduringplantoperation duetotheobvioussafetyissuesrelatedtoSITinventory andchemistry control.V-3215,V-3225,V-3235,andV-3245SafetyInjection Discharge CheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents. | |||
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotE-6 REVISION108/04/94warranted andimplementation wouldbedifficult andconfusing. | |||
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetesting'has notbeenperformed intheprevious9months.3.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4,Following valveactuation duetoflowthroughthevalve.V-3217,V-3227,V-3237,andV-3247SafetyInjection HeadertoRCSCheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents. | |||
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing. | |||
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months'.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.E-7 REVISION108/04/943.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4.Following valveactuation duetoflowthroughthevalve.CV/POtestisaddressed inReliefRequestVR-14V-3258,V-3260,V-3259,andV-3261SafetyInjection HeaderCheckValvesThesevalvesopentoprovideflowpathsfromthehigh/lowpressuresafetyinjection headerstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Sincenofullflowrecirculation pathexists,fullstrokeexercising ofthesevalveswouldrequireoperating alowpressuresafetyinjection (LPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheLPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure. | |||
Partialflowexercising ofthesevalvesisperformed wheneveritsassociated SITisrefilled. | |||
ThesevalvesarePressureIsolation Valveswhichrequiresthattheyareverifiedclosedandleaktestedwithin24hoursfollowing flowthroughthem.Theacceptable SITlevelbandspecified bytheTechnical Specification isverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoveri,fytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents. | |||
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves'atisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing. | |||
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobeE-8 REVISION108/04/94withinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.3.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4,Following valveactuation duetoflowthroughthevalve.V-3614,V-3624,V-3634,andV-3644SITDischarge Isolation ValvesStroketestingthesevalvesinthecloseddirection duringnormaloperation isnotpossible. | |||
Thevalvesarenormallylockedopenwiththeirbreakeropened.Alsotheyareinterlocked withpressurizer pressuretopreventthesevalvesfromclosingwithRCSpressure>276psia.Therefore, thevalvescannotbecycledexceptduringcoldshutdowns. | |||
V-3733thruV-3740SITVentValvesCyclinganyofthesevalvesduringnormalplantoperation withtheSITspressurized isundesirable sinceifavalveweretofailtore-closetheresultwouldbedepressurization oftheaffectedSIT.V-6792NitrogenGasSupplyContainment Isolation CheckValveThisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandthusisimpractical tododuringplantoperations. | |||
E-9 REVISION108/04/94HCV-08-1A&BMainSteamIsolation ValvesDuringplantoperation atpower,fullclosureofeitherofthesevalvesisnotpractical asitwouldrequireisolating asteamgenerator whichwouldresultinaseveretransient onthesteamandreactorsystemsandapossibleplanttrip.V-08130andV-08163Steam-Driven AFNPumpSteamSupplyCheckValvesFullstrokeoperation ofthesevalvesrequiresoperating 2CAFWPumpandfullaccidentflowratewhichisnotpractical duringplantoperation atpower.(SeeReliefRequestPR-4)HCV-09-1A&BandHCV-09-2A&BMainFeedwater Isolation ValvesDuringplantoperation atpower,closureofanyofthesevalvesisnotpractical asitwouldrequireisolating asteamgenerator whichwouldresultinaseveretransient onthesteamandreactorsystemsandaplanttrip.V-09107,09123,and09139Auxiliary Feedwater PumpDischarge CheckValvesFull-stroke exercising ofthesevalveswouldrequireoperation oftherelatedauxiliary feedwater pumpandinjection ofcoldwater(85deg-F)intothehot(450deg-F)'eedwater supplypiping.This,inturn,wouldresultinunacceptable thermalstressonthefeedwater systempipingcomponents. | |||
V-09119,09135,09151,and09157Auxiliary Feedwater SupplyCheckValvesFull-stroke exercising ofthesevalveswouldrequireoperation ofarelatedauxiliary feedwater pumpandinjection ofcoldwater(85deg-F)intothehot(450deg-F)feedwater supplypiping.This,inturn,wouldresultinunacceptable thermalstressonthefeedwater systempipingcomponents. | |||
REVISION108/04/94HCV-14-1, 2,6&7RCPCoolingWaterSupply/Return Isolation ValvesThesevalvesarerequiredtobeopentoensurecontinued coolingofreactorcoolantpumpauxiliary components andthecontrolroddrives.Closinganyofthesevalvesduringplantoperation wouldresultinsevereRCPandCRDdamageleadingtoplantoperation inapotentially unsafemodeandasubsequent plantshutdown. | |||
HCV-14-3A&BShutdownHeatExchanger ReturnValvesTestingeitherofthesevalvesduringplantoperation wouldresultinanunbalanced flowcondition intheaffectedCCWtrainanddecreased flowtoessential equipment. | |||
Thiscouldresultincomponent damageoranundesirable planttransient. | |||
V-181270ServiceAirContainment Isolation CheckValveDuringnormalpoweroperation, theserviceairsupplytothecontainment buildingisisolated. | |||
Thecontainment isolation valves,HCV-18-2, isanormallyshutvalveusedtoisolatetheserviceairsysteminsidecontainment. | |||
Testingacheckvalveinanisolatedsectionofasystemisnotwarranted. | |||
Thecheckvalvewillbebackflowtestedduringcoldshutdowns whenthesectionoftheserviceairsysteminsidethecontainment buildingisinservice.Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandthusisimpractical tododuringplantoperations. | |||
REVISION108/04/94HCV-18-1PrimaryContainment Instrument-AirSupplyClosingthisvalveisolatesoperating airtocriticalcomponents inthecontainment buildingincluding thepressurizer sprayvalvesandCVCSletdownisolation valvesandcouldcausesevereplanttransients andaplanttrip.Failureintheclosedpositionwouldcauseaplantshutdown. | |||
V-27101andV-27102HydrogenSamplingReturnLineContainment Isolation CheckValvesThisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandbreaching ofthesystem,thusitisimpractical tododuringplantoperations. | |||
FCV-25-1thruFCV-25-6PrimaryContainment PurgeandVentValvesThesevalvesarerequiredtoremainclosedatalltimeswhentheplantisoperating inModes1through4,thustheyarenotrequiredtooperate(close)duringoperational periods.Duetothelargesizeofthesevalvesandthepotential fordamageasaresultoffrequentcycling,itisnotprudenttooperatethemmorethanisabsolutely necessary. | |||
V-25-20andV-25-21Containment VacuumBreakersThesevalvescanonlybeexercised manuallyrequiring directaccesstoeachvalve.Sincethesevalvesarelocatedwithinthecontainment | |||
: building, accessislimitedandnotroutinely practical. | |||
REVISION108/04/94AppendixFValveProgramRefueling OutageJustifications REVISION108/04/94AppendixF:REFUELING OUTAGEJUSTIFICATIONS Thisappendixisintendedtoprovidethejustification forperforming valveexercising onlyatrefueling outageconditions aspermitted byOM-10,'H4.3.2.2 (d),(e),and(h)and'1[4.2.1.2 (d),(e),and(h)Specifically includedinthiscategoryarethefollowing: | |||
Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardize theimmediate safetyoftheplantorsystemcomponents; Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguard systemtobeinoperable; Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransient thatcouldleadtoaplanttrip;orWhentestrequirements orconditions areprecluded bysystemoperation oraccess. | |||
REVISION108/04/94V-2177V-2190V-2191v-2526ChemicalandVolumeControl(2998-G-078, Sh121)V-2177andV-2526opentoprovideaflowpathforemergency borationfromtheboricacidmakeuppumpstothesuctionofthechargingpumps.Likewise, V-2190openstoprovideaflowpathforemergency borationviagravitydrainfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ValveV-2191openstoprovideaflowpathfromtherefueling watertank(RWT)tothesuctionofthechargingpumpsasanalternate supplyofboratedwaterforboration. | |||
Testingthesevalvesintheopendirection requirestheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuction.ofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Arapidinsertion ofnegativereactivity couldresultinarapidRCScooldownanddepressurization andpossiblyaplanttrip.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldalsobeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreasetheboronconcentration. | |||
Typically, theboronconcentration isincreased forshutdownmarginduringcooldownandpriortoreachingcoldshutdownconditions. | |||
Thisistheonlypractical timetoperformthepartialstrokeexercisetestsinceborationduringshutdownandstartupisundesirable. | |||
Intheeventthatcircumstances prohibittestingduringcooldown, testingforthatcoldshutdownmaybedeferredtothenextcooldownevolution. | |||
F-2 REVISION108/04/94V-2443V-2444ChemicalandVolumeControl(2998-G-078, Sh121)Thesevalvesopentoprovideaflowpathfromtheboricacidmakeuppumpstotheemergency borationheader.Theyclosetopreventrecirculation flowthroughanidlepump.Full-stroke testingthesevalvesrequiresoperating theboricacidmakeuppumpsatornearratedflowandverifying Cullaccidentflowthrougheachvalve.Suchtestingwouldcausetheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Thisrapidinsertion ofnegativereactivity wouldresultinarapidRCScooldownanddepressurization. | |||
Alargeenoughboronadditionwouldresultinanunscheduled planttripandapossibleinitiation ofSafetyInjection Systems.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldbeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreaseitsboronconcentration. | |||
Asecondcircuitthatcirculates watertotheVCThasflowratemeasuring instrumentation installed howeveritislimitedtoapproximately 30gpm.Duringanaccident, eitherpump'sdischarge checkvalvemustbeabletopassaminimumflowcapableofmatchingthedemandofthetworunningchargingpumps(greaterthan80gpm.).F-3 REVISION108/04/94V-07000V-07001SafetyInjection (2998-G-078 Sh130)ThesevalvesopentoprovideflowpathsfromtheRWTtothesuctionoftheassociated low-pressure safetyinjection pump.Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection intotheRCSviatheLPSIpumps.Duringplantoperation thisisprecluded becausetheLPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure. | |||
Atcoldshutdown, theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction. | |||
Thus,theonlypractical opportunity fortestingthesevalvesisduringrefueling outageswhenwaterfromtheRWTisusedtofilltherefueling cavity. | |||
REVISION108/04/94V-3101GXSX12L'. | |||
SafetyInjection(2998-G-078 Sh130)Thisvalveopenstoprovidea.flowpathforboratedwaterfromthesafetyinjection tanks(SIT's)tothevolumecontroltank(VCT)toprovidesufficient waterinventory forplantcooldownshouldtherefueling watertank(RWT)becomeunavailable. | |||
Transferring thelargequantityofwaterfromaSITtotheVCTneededtoverifyfullstrokewouldresultinasignificant increaseoftheboronconcentration withintheVCTandinthechargingsystemmakeuptothereactorcoolantsystem(RCS)aswell.Duringnormalplantoperation, anyincreaseoftheVCTboronconcentration couldresultintheexcessive boronconcentration intheRCSalongwiththeinsertion ofnegativereactivity. | |||
Ultimately, theRCSwouldexperience cooldownanddepressurization withthepotential foraplanttrip.Duringcoldshutdown, the,introduction of'xcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemcouldalsobeoverburdened bythelargeamountsof.RCScoolantthatwouldrequireprocessing following dilutionactivities. | |||
Duringcoldshutdown, transferring alimitedquantityofwater(lessthanthatneededtoconfirmfullstroke)fromaSITispractical. | |||
F-5 REVISION108/04/94V-3104V-3105BYSXJ'SafetyInjection System(2998-G-078, Sh130)Thesevalvesopentoprovideformini-flow recirculation flowpathsfromthelowpressuresafetyinjection pumpstotherefueling watertank.Thisminimumflowthroughtherespective pumpsremovespumpheatintheeventtheyareoperating underlowornoflowconditions. | |||
Thevalvesclosetopreventrecirculation throughtheidlepump,andtopreventoverpressurization oftheLPSIpipingfromthedischarge pressureoftheHPSIpump.Thereisnoflowrateinstrumentation available toverifyvalvefull-stroke exercising asrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised (open)viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements. | |||
Duringreactorrefueling outagesthesetwovalvescanbeflowtested.Thetestwillcalculate theflowthroughthemini-flow linebydrainingthereactorcoolantsystemthroughthelinewhileobserving thepressurizer leveldroporrefueling watertanklevelincrease. | |||
Thelevelchangedividedbythetimecanbeusedtoverifythefullflowexerciseofthetwocheckvalves'-6 REVISION108/04/94V-3401V-3410SYZZEZL.SafetyInjection (2998-G-078 Sh130)ThesevalvesopentoprovideflowpathsfromtheRWTandthecontainment sumptothesuctionoftheassociated high-pressuresafetyinjection pumps(HPSI).Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection viatheHPSIpumpsintotheRCS.Duringplantoperation thisisprecluded becausetheHPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure. | |||
Duringcoldshutdownconditions, operation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.F-7 REVISION108/04/94V-3414V-3427BX.~ZSafetyInjection (2998-G-078 Sh130)Thesevalvesopentoprovideflowpathsfromtherespective HPSIpumpstothehigh-pressure safetyinjection headers.Theyclosetopreventrecirculation throughanidlepump.Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection intotheRCSviatheHPSIpumps.Duringplantoperation thisisprecluded becausetheHPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure. | |||
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partialflowexercising ofthesevalvescanbeperformed byoneofthefollowing twomethods:whentheHPSIpumpisusedtorefillaSITorwhenaHPSIpumpisrecirculated backthroughtheSITtoRWTdrainline.Partial-stroke exercising thecheckvalvesbyfillingaSITcannotreadilybeusedbecausetheacceptable SITlevelband,specified bytheTechnical Specifications, isverynarrow.TheSITareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,be'openedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.F-8 REVISION108/04/94v-3522V-3547SYST1~SafetyInjection (2998-G-078 Sh130)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection pumpstotheRCSforhot-leginjection. | |||
Shouldthenormalchargingheaderbecomedisabled, thesevalvesarerequiredtoclosetodirectchargingflowtotheRCSviatheHPSIheaders.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpandinjecting intothereactorcoolantsystemthroughthehotleginjection system.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure. | |||
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.Theclosuretestscanonlybeperformed attheendoftheoutageafterthevalveshavebeenexercised openearlierbythepartialstrokeopentests.F-9 REVISION108/04/94V-3113V-3133V-3143V-3766BYE~SafetyInjection (2998-G-078 Sh131)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection headerstotheRCS.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure. | |||
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partialflowexercising ofthesevalvesisperformed wheneveritsassociated SITisrefilled. | |||
Theacceptable SITlevelbandspecified bytheTechnical Specification isverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolati'on valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4. | |||
REVISION108/04/94V-3524v-3525V-3526V-3527GYKXK'afety Injection (2998-G-078 Sh131)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection pumpstotheRCSforhotleginjection andclosetoisolatethesafetyinjection headersfromthehighpressureofthereactorcoolantsystem.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure. | |||
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partial-stroke exercising ofcheckvalvesV-3524andV-3526quarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4. | |||
REVISION108/04/94BEEZER'akeupWater(2998-G-084) | |||
V-15328Thisvalveclosestoprovideprimarycontainment forthepenetration relatedtothemakeupwatersupplylinetothecontainment building. | |||
Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Performing suchatestdemandsthatthemakeupwatersupplylinebeisolated. | |||
Thiseffectively isolatesthesolesupplyoffirewatertothecontainment whichisunacceptable underanyplantconditions. | |||
Thus,priortoleaktesting inthismanneranalternate firewater sourcemustbeestablished byriggingseveraltemporary firehosesthroughthemaintenance hatchtothevariousfirefightingstationsinthecontainment building. | |||
Thisisnotpossibleduringnormaloperation whenprimarycontainment isrequiredand.wouldconstitute anundueburdenonplantpersonnel duringcoldshutdowns. | |||
F-12 REVISION108/04/94V-18195Instrument Air(2998-G-085, Sh2)Thisvalveclosestoprovideprimarycontainment forthepenetration relatedtotheinstrument airsupplylinetothecontainment building. | |||
Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Suchatestnecessitates isolation ofallinstrument airtothecontainment. | |||
Thereareover50valves,instruments, andcontrollers suppliedbythisoneline.Duringanormalrefueling outagewhenleaktestingisnormallyperformed, analternate instrument aircompressor mustbeconnected totheisolatedsectionoftheinstrument airlineinordertosupplyairtocriticalair-operated components. | |||
Thesupplyhosefromtheaircompressor totheinstrument airlineistypically routedthroughthecontainment maintenance hatch.Duringnormalplantoperation thisisnotpractical duetothemanycriticaloperational components suppliedbytheinstrument airsystem,therequirement tomaintainprimarycontainment integrity, andthepotential forunacceptable planttransients. | |||
Duringcoldshutdown, theactivities associated withentryintothecontainment | |||
: building, securingallinstrument airinsidethecontainment, andopeningthemaintenance hatchtoprovidethealternate airsupplyareextensive andwouldlikelyresultinanextension ofanyinterimoutage(coldshutdownperiod).Thustestingthisvalveduringcoldshutdownperiodsisconsidered tobeanunreasonable burdenontheplantstaffandnotcommensurate withthepotential gaininplantsafetyaffordedbyperformance ofthistest. | |||
REVISION108/04/94V-07129V-07143GYGXlRL'ontainment Spray(2998-G-088) | |||
Thesevalvesopentoprovideflowpathsfromtherespective containment spraypumptothecontainment sprayheaders.Fullstrokeexercising ofthesevalveswouldrequireoperating eachcontainment spraypumpatnominalaccidentflowrate.Exercising thesevalvesviathenormalcontainment sprayflowpathwouldresultinsprayingdownthecontainment | |||
-anunacceptable option.Theonlyotherpractical flowpathavailable forsuchatestrequirespumpingwaterfromtherefueling watertank(RWT)tothereactorcoolantsystem(RCS)viatheshutdowncoolingloops.Duringplantoperation, thecontainment spraypumpscannotdevelopsufficient discharge pressuretoovercomeRCSpressure. | |||
Atcoldshutdown, theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction. | |||
F-14 REVESXON108/04/94BYSZl~H'ontainment Spray(2998-G-088) | |||
V-07256V-07258ThesevalvesopentoprovideflowpathsfromtheHydrazine pumpstotherespective containment spraypumpsuctionheader.Testingthesevalvesusingtheonlyflowpathavailable (viatheHydrazine pumps)wouldcontaminate thecontainment spraysystemandrefueling watertankwithHydrazine. | |||
EachoftheHydrazine pumpsdischarge throughitscheckvalveintothesuctionpipingofitscontainment spraypump.TheHydrazine wouldthenbepumpedtotheRWTduringthequarterly containment spraypumpCodetestusingthemini-flow recirculation line.Continued testingwouldbuilduptheconcentration ofHydrazine intheRWTanddepletethelevelinitsstoragetankHydrazine isaknowncarcinogen, withcumulative toxicaffectswhenabsorbedthroughtheskin,inhaled,oringested. | |||
Hydrazine buildupintheRWTisundesirable dototheincreased potential forexposingpersonnel tothechemicalorreleasing ittotheenvironment. | |||
Personnel wouldadditionally beexposedtoHydrazine whilerestoring levelinthetank.Duetothepersonnel hazardsassociated withhandlingthehazardous chemicalHydrazine, testingquarterly orduringcoldshutdowns isimpractical. | |||
F-15}} |
Revision as of 15:59, 29 June 2018
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Site: | Saint Lucie |
Issue date: | 08/03/1994 |
From: | FLORIDA POWER & LIGHT CO. |
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References | |
JNS-PSL-204, JNS-PSL-204-R01, JNS-PSL-204-R1, NUDOCS 9408290298 | |
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Text
REVISION108/04/94FLORIDAPOWERandLIGHTCOMPANYNUCLEARENERGYSERVICES700UniverseBoulevard JunoBeach,Florida33408SECONDTEN-YEARINSERVICE INSPECTION INTERVALINSERVICE TESTINGPROGRAMFORPUMPSANDVALVESST.LUCIENUCLEARPOWERPLANTUNITNO.2DATEOFCOMMERCIAL OPERATION:
AUGUST8I1983FLORIDAPOWER&LIGHTP.O.BOX128FT.PIERCE,FL.34954NRCDOCKETNUMBER:DOCUMENTNUMBER:ST.LUCIEPLANTREVIEWSANDAPPROVALS:
PREPAREDBY:PSLANTISTENGINEER(S)APPROVEDBY:SLEST6CODESUPERVISOR DATE:~94082'70298 940822PDRADOCK05000389PDR REVISION108/04/94TableofContentsTableofContentsRecordofRevisions 1.01.11.2Introduction ISTProgramTestingRequirement Guidelines ISTProgramImplementation
2.0 Applicable
Documents 3.03.13.23.33.43.54.04.14.24.34,44.54.6Inservice TestingProgramForPumpsCodeCompliance Allowable RangesofTestQuantities TestingIntervals PumpProgramTableReliefRequestsforPumpTestingInservice TestingProgramForValvesCodeCompliance TestingIntervals StrokeTimeAcceptance CriteriaCheckValveTestingValveProgramTableReliefRequestsForValveTesting10101010101010ABCDEFPumpProgramTablesPumpProgramRequestsForReliefValveProgramTablesValveProgramRequests, ForReliefColdShutdownJustifications Refueling OutageJustifications REVISION108/04/94Second10YEARSUBMITTAL RECORDOFREVISIONS REVISIONHLH~ZDESCRIPTION OFREVISIONDATEEKIS122DATEQFMXZSecond10YearSubmittal ProgramUpdate07/16/9305/02/9408/04/94 REVISION108/04/94INSERVICE TESTING(IST)PROGRAMPLANST.LUCIEUNIT
11.0INTRODUCTION
Revision1oftheSt.LucieUnit2ASMEInservice Inspection (IST)Programwillbeineffectthroughtheendofthesecond120-month (10-year) intervalunlessrevisedandreissuedforreasonsotherthantheroutineupdaterequiredatthestartofthethirdintervalper10CFR50.55a(f).
Thesecondinspection intervalisdefinedasfollows:August8,1993August7,2003ThisdocumentoutlinestheISTProgramforSt.LuciePlant,Unit2,basedontherequirements oftheASMEBoilerandPressureVesselCode(theCode),SectionXI,1986Edition.References inthisdocumentto"IWP"or"IWV"correspond toSubsections IWPandIWV,respectively, oftheASMESectionXI,1986Edition,unlessotherwise noted.TheISTprogramhasbeenupdatedtoreplacetherequirements ofASME/ANSI OM-1981,Part1withASME/ANSI OM-1987,Part1,"Requirements forInservice Performance TestingofNuclearPowerPlantPressureReliefDevices".
NRCSafetyEvaluations datedAugust23,1993,andMay2,1994determined certainreliefrequestswerenotrequiredpursuantto10CFR50.55a(f)
(4)(iv)whereitwasdetermined thattheproposedalternative isinaccordance withtherequirements ofthe1989EditionofSectionXI.The1989editionprovidesthattherulesforISTofpumpsandvalvesshallmeettherequirements setforthinASME/ANSI OMa-1988, Part6,"Inservice TestingofPumpsinLight-Water ReactorPowerPlants"andASME/ANSI OMa-1988, Part10,"Inservice TestingofValvesinLight-Water ReactorPowerPlants".Approvalwasgrantedtoconductinservice testsinaccordance withOM-6andOM-10,orportionsthereof,providedallrelatedrequirements aremet.Accordingly, theISTProgramfortheSt.LuciePlantisrevisedbythefollowing:
1.Measurement ofbearingtemperatures asrequiredby'EIWP-3300and'KIWP-4310 arenotrequiredbyASME/ANSI OMa-1988, Part6,forinservice testingofpumps.Therefore, themeasurement ofbearingtemperatures isnotarequirement oftheISTProgram.2.Thevalveexercising requirements ofASME/ANSI OMa-1988, Part10,94.2.1.2and4.3.2.2willbefollowedasalternatives to'3IWV-3412(a) andIWV-3522notincluding IWV-3522(a) and(b).
REVISION108/04/943.Theanalysisofleakagerateandcorrective actionrequirements ofASME/ANSI OMa-1988, Part10,94.2.2.3(e)and(f)willbefollowedasalternatives to'J[IWV-3426andIWV-3427.
Theinservice testingrequirements identified inthisPlanwerepreparedtoverifytheoperational readiness ofISIClass1,2,and3pumpsandvalveswhichhaveaspecificfunctioninmitigating theconsequences ofanaccidentorinbringingthereactortoasafeshutdown.
Inthisregard,thegeneralrequirements ofParagraphs IWP-1100andIWV-1100formthefollowing basicscopedocumentasitappliestoISIClass1,2,and3.Specifically components tobeincludedare:Centrifugal andpositivedisplacement pumpsthatarerequiredtoperformaspecificfunctioninshuttingdownthereactororinmitigating theconsequences ofan=accidentandthatareprovidedwithanemergency powersource,andValves(andtheiractuating andpositionindicating systems)whicharerequiredtoperformaspecificfunctioninshuttingdownthereactortothecoldshutdowncondition orinmitigating theconsequences ofanaccident.
ThegeneralCoderequirements wereappliedtoSt.LucieUnit2usingasystematic approachbyfirstreviewing thefunctionofeachoftheplantsystemsastheyrelatetoalimitednumberofboundingaccidentscenarios'his revieweliminated systems(andassociated components) thatclearlydonotfitthebasicCodedefinitions including thatofISIboundaryclassifications Next,aseriesofrulesorguidelines weredeveloped thatestablished thecriteriatobeusedduringthereviewoftheremaining systemsandcomponents.
Theserulesestablish thepoliciesandassumptions thatwereappliedtotheforegoing analysistoensureconsistency'ach oftheseareoutlinedbelow.Fromthispoint,inaseriesofsteps,eachoftheindividual components ineachoftheremaining significant safetysystems(andsupporting systems)wereevaluated withrespecttothefunctionofeachcomponent andtheneedforitsoperability asitrelatestothescopeofSectionXI.Thesestepsincluded:
1.Areviewofflowdiagramsofeachsystemandidentification ofanycomponents (pumpsorvalves)that"could"potentially beincludedintheISTProgram REVISION108/04/94scope.Basedonthereviewer's experience, valvesusedformaintenance isolation, vents,drains,etc.wereexcluded.
Typically, allpumps,power-operated valves,checkvalves,andsafetyvalvesremainedinthepopulation designated forfurtherevaluation.
2.Eachsystemwasbrokendownbycomponent and,basedongeneralsystemoperational requirements, anarrative description ofeachcomponent's safetyfunction(s) duringtheproposedscenarios wasdrafted.3.Sequentially, plantdocuments thatrefertoordiscusssafety-related component orsystemfunctions werereviewedindetailandinformation fromthesedocuments wascomparedtothedraftsdeveloped intheabovestep2.Whereappropriate, corrections andreferences wereappliedtotheindividual narratives.
Documents reviewedincludedthefollowing:
a.b.C.d.e.f.g.h.UpdatedFinalSafetyAnalysisReportTechnical Specifications PlantSystemDescriptions (Training)
Documents SpecialanalysesCommitment correspondence PlantOperating Procedures Emergency Operating Procedures AppendixJLeakrateTestProgram4.Basedonthefinalized component safetyfunctionevaluation derivedfromthedocumentreviewandthecorrected narratives, theISTProgramtestingrequirements werethenestablished byapplyingtheguidelines listedinSection1.1toeachone.5.Thefunctional description ofthesystemcomponents weresubjected toacomprehensive reviewbyknowledgeable plantpersonnel toconfirmtheaccuracyonthedocument.
REVISION108/04/94ISTPROGRAMTESTINGREQUIREMENT GUIDELINES Thefollowing guidelines aresetforthforevaluation ofsystemcomponents (pumpsandvalves)withrespecttotheirinclusion intheSt.LucieUnit2ISTProgramandtowhatextenttestingwillbeperformed.
Wheremultiplecomponents arecapableofperforming thesameequivalent andredundant specified function(eg.multiplevalvesclosinginseries)andwherethecomponents arenotsuppliedbyalternate andredundant powersupplies, onlyoneneedbeincludedintheandnotsimplyhavethecapability ofperformance.
Thisexemption onlyapplieswherelicensing documents takecreditforthedesignedredundancy.
Components performing a,redundant functionshallbeincludedinthetestingprogramif,intheprocessofanalysisorlicensing justification, theyarereliedupontobeoperable.
TheSt.LucieUnit2FUSARandrelateddesignbasisdocuments shallbetheprimaryreferences fordetermining whichcomponents arerequiredtoperformspecified functions relatedtothespectrumofpredicated accidents.
Althoughseveralotherplantsourcedocuments (Tech.Specs.andEOP's)identifyvariouscomponents thatmaybeimportant toplantsafetyoraretobeoperatedinconjunction withrecoveryfromanaccident, unlessspecificcreditistakenintheplantsafetyanalysis(orisimpliedintheanalysis) forapumporvalve,thecomponent neednotbeincludedintheISTprogram.Theexceptions tothisarethosecaseswheretheNRCimposestestrequirements attheirdiscretion.
Valvesinstalled primarily forthepurposeofproviding convenient operational flexibility (eg.systemcross-connects) thatarenotrequiredtooperate,assumingthatthedesignated first-line systemsandcomponents operatesatisfactorily, neednotbeincludedintheISTProgram.Thisdoesnotexcludeactivevalvesthatcouldbecalleduponasaresultofoptionalsystemlineupsexistingpriortotheinitiation ofanaccident, Valvesthatareactuatedasaresultofasafetysystemautomatic responseshallbeincludedintheISTProgramtotheextentthatthetestingshallverifyvalveoperation requiredasaresultofthesafetysysteminput.Thisappliesonlyifvalvemovementisrequiredtosupportthosefunctions requiredasspecified bytheCode.Thisrequirement extendsonlytotestingdefined REVISION108/04/94bytheCodeandisnotintendedtoimplytheneedforverifying avalve'sresponsetoautomatic logicsystemoutput.Valveswhosesolefunctionistoprovidesystemorcomponent redundancy relatedtofailureofpassivecomponents neednotbeincludedifasetofalloftheactivecomponents (pumpsandvalves)neededtofulfillthespecified system(train)functionaretesteddoubleorunrelated simultaneous failuresneednotbeassumed.Insomecaseswhereprotection ofcriticalsystemsfrompassivefailuresisacommitment, thecomponents areincludedinthetestingprogram.Systemsafety/relief valvesshallbeincludedwherethefunctionofthevalveistoprovideoverpressure protection.
AllvalvesincludedintheSt.LucieUnit2leakratetestingprogramcomplying withlOCFR50,AppendixJshallbeincludedintheISTProgramasCategoryAvalves.Allvalvesdesignated ashigh-lowpressureinterface valves(pressure isolation valves)shallbeincludedintheISTProgramasCategoryAorA/Cvalves.AnyactiveCategoryAvalveshallbedesignated fortesting(exercising) tothecloseddirections Whenavalve'snormalpositionduringoperation isitspositionrequiredtoperformitsdesignated safetyfunctionandvalvemovementmayberequiredduetoplantevolutions orpossiblerepositioning duringaccidentresponseorrecoveryoperations, thenperiodicexercising pertheCodeisrequired(i'hevalvecannotbeconsidered passive).
Whereanair-operated valveisprovidedwithasimpleair-pilot valve,thepilotvalveneednotbespecifically includedintheISTProgramprovidedthatthetestingperformed onthemainvalveverifiestheproperoperation ofthepilotvalve.Controlvalvesarespecifically excludedfromtestingperIWV-1200(a);however,ifacontrolvalvemustchangepositiontosupportasafety-related functionandithasafailsafeposition, thenitmustbeincludedintheISTProgramandtestedtotheextentpractical.
Steamturbinegovernorvalvesareconsidered tobeanintegralpartoftheturbineand,assuch,arenotincludedintheISTProgram.
REVISION108/04/9413.Checkvalvesareincludedwhereavalveservesastheonlyeffective boundarybetweenpipingassociated withanecessary safetyfunctionandnon-safety grade(non-seismic)piping.Failureofpassivesystemcomponents isassumedonlyfornon-safety gradesystems.14.Whereavalveperformsasafetyfunctioninbothdirections (openandclosed)exercising inbothdirection isrequiredasdescribed inReference 1.Forthesepower-operated valves,stroketimemeasurements inbothdirections wouldberequired.
15.Pumpsandvalveswhoseonlysafetyfunctionispredicated onplantshutdownandrecoveryfromafirepercommitment madeasaresulton10CFR50,AppendixRarenotincludedintheISTProgram.16.Pumpsandvalvesthatarenotcategorized asISIClass1,2,or3neednotbeincludedintheISTProgram.17.Checkvalvesthathaveasafetyfunctiontocloseshouldbeevaluated withrespecttocategorization asCategoryA/CversusCwithrespecttothefollowing issues:a.Whethertheflowrequirements forconnected systemscanbeachievedwiththemaximumpossibleleakagethroughthecheckvalve.b.Theeffectontheperformance ofothercomponents andsystemsduetothereducedflowresulting fromtheleakage.c.Theconsequences oflossoffluidfromthesystem.d.Theeffectthatbackflowthroughavalvemayhaveonpipingandcomponents, suchastheeffectofhightemperature andthermalstresses.
e.Theradiological exposuretoplantpersonnel andthepubliccausedbytheleak.
REVISION108/04/941.2ISTPROGRAMIMPLEMENTATION A.Therequirements oftheASMECodeSectionXI,subsections IWPandIWV,andOM-1-1987 areimplemented atSt.LuciethroughtheQualityInstructions andAdministrative Procedures.
Theseinstructions andprocedures addresstheCoderequirements, thedepartment(s) responsible, andthestepsthatmustbeperformed tosatisfythoserequirements.
B.EachofthepumpsandvalvesincludedintheUnit2ISTprogramaretestedbyaUnit2testprocedure.
Thesetestprocedures areintheformofeitherPumpDataSheets,ValveDataSheets,procedure appendixes, orindividual testprocedures.
Alltestprocedures andtheirsetpoints mustbereviewedandapprovedbythePlant'sProcedure ChangeRequest(PCR)process.ThePCRprocessincludesa10CFR50.59reviewandfinalreviewbythePlantsFacilityReviewGroup(FRG)~C.PlantChangesorModifications (PC/M)arereviewedbyEngineering and/ortheplantsTechnical Staffforanypotential effectstotheISTprogram.Ifchangestotheprogramarerequired, theplantTechnical Staffand/orotherapplicable departments willinitiatetheappropriate testprocedure changesviaaPCR.AnychangestotheISTprogramwillbemadebytheTechnical Staff.Periodically, thesechangeswillbeincorporated intoanewrevisiontotheISTprogramandsubmitted totheFRGforreview.'Following theFRGreview,thenewISTrevisionwillbeissued.
REVISION108/04/942.0APPLICABLE DOCUMENTS ThisProgramPlanwasdeveloped pertherequirements andguidanceprovidedbythefollowing documents:
2.1Title10,CodeofFederalRegulations, Part502.2NRCRegulatory Guides-Division12.3StandardReviewPlan,3.9.6,"Inservice TestingofPumpsandValves2.4FinalSafetyAnalysisReport.,St.LucieUnit22.5St.LuciePlantUnit2Technical Specifications ASMEBoilerandPressureVesselCode,SectionXI,1986Edition2.7NRCGenericLetter89-04,"Guidance onDeveloping Acceptable Inservice TestingPrograms" 2.8MinutesofthePublicMeetingsonGenericLetter89-042.92.102.11Supplement toMinutesofthePublicMeetingsonGenericLetter89-04byJ,G.Partlow,26September 1991RequestforIndustry/NRC-Accepted Interpretation on"Practical" asAppliedbyASMECodeSectionXI,IWV-3412(a)byMartinJ.Virgilio, Assistant DirectorforRegionsIVandV.ASMEBoilerandPressureVesselCode,SectionXI,1989Edition.2'2ASME/ANSI OM-1987,Part1,"Requirements forInservice Performance TestingofNuclearPowerPlantPressureReliefDevices".
2.132.142.152.16NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993.ASME/ANSI OMa-1988, Part6,"Inservice TestingofPumpsinLight-Water ReactorPowerPlants".ASME/ANSI OMa-1988, Part10,"Inservice TestingofValvesinLight-Water ReactorPowerPlants".NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994.
REVISION108/04/943'INSERVICE TESTINGPROGRAMFORPUMPS3.1CodeCompliance ThisISTProgramforpumpsmeetstherequirements ofSubsection IWPoftheCodeandanyinterpretations oradditional requirements imposedbyReference 2.7.Wheretheserequirements havebeendetermined tobeimpractical, conformance wouldcauseunreasonable hardshipwithout,anycompensating increaseinsafety,oranalternative testprovidesanacceptable levelofqualityandsafety,relieffromCoderequirements isrequested pursuanttotherequirements of10CFR50.55a(f)
(iii)andReference 2.7.3.2Allowable RangesofTestQuantities Theallowable rangesfortestparameters asspecified inTableIWP-3100-2 willbeusedforallmeasurements ofpressure, flow,andvibration exceptasprovidedforinspecificreliefrequests.
Insomecasestheperformance ofapumpmaybeadequatetofulfillitssafetyfunctioneventhoughtheremaybeavalueofanoperating parameter thatfallsoutsidetheallowable rangesassetforthinTableIWP-3100-2.
Shouldsuchasituation arise,anexpandedallowable maybedetermined, onacase-by-case basis,inaccordance withIWP-3210.
3.3TestingIntervals Thetestfrequency forpumpsincludedintheProgramwillbeassetforthinIWP-3400andrelatedreliefrequests.
Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit2Technical Specifications toprovideforoperational flexibility.
3.4PumpProgramTableAppendixAliststhosepumpsincludedintheISTProgramwithreferences toparameters tobemeasuredandapplicable requestsforrelief.3.5ReliefRequestsforPumpTestingAppendixBincludesallreliefrequestsrelatedtopumptesting.
REVISION108/04/944.0INSERVICE TESTINGPROGRAMFORVALVES4.1CodeCompliance ThisISTProgramforvalvesmeetstherequirements ofSubsection IWVoftheCodeandanyinterpretations oradditional requirements imposedbyReference 2.7.Wheretheserequirements havebeendetermined tobeimpractical, conformance wouldcauseunreasonable hardshipwithoutanycompensating increaseinsafety,oranalternative testprovidesanacceptable levelofqualityandsafety,relieffromCoderequirements isrequested pursuanttotherequirements of10CFR50.55a(f)(iii) andReference 2.7.4.2TestingIntervals Thetestfrequency forvalves(excluding safety/relief valves)includedintheProgramwillbeassetforthinIWV-3400andrelatedreliefrequests.
Abandof+25percentofthetestintervalmaybeappliedtoatestscheduleasallowedbytheSt.LucieUnit2Technical Specifications toprovideforoperational flexibility.
Wherequarterly testingofvalvesisimpractical orotherwise undesirable, testingmaybeperformed duringcoldshutdownperiodsaspermitted byIWV-3412(a).
Justifications forthisdeferredtestingareprovidedinAppendixE.4.3StrokeTimeAcceptance CriteriaWhenrequired, theacceptance criteriaforthestroketimesofpower-operated valveswillbeassetforthinReference 2,7.4,4CheckValveTestingFull-stroke exercising ofcheckvalvestotheopenpositionusingsystemflowrequiresthatatestbeperformed wherebythepredicted fullaccidentcondition flowratethroughthevalvebeverifiedandmeasured.
Anydeviation tothisrequirement mustsatisfy,therequirements ofReference 2.7,Positionl.4.5ValveProgramTableAppendixCliststhosevalvesincludedintheISTProgramwithreferences torequiredtesting,respective testintervals, andapplicable requestsforrelief.4.6ReliefRequestsforValveTestingAppendixDincludesallreliefrequestsrelatedtovalvetesting.10 REVISION108/04/94AppendixAPumpProgramTables REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-PUMPTABLESSt.LucieNuclearPlant-Unit2PAGE'IcR&KD.PUMPNUMBERNumerical designator indicated ontherespective flowdiagram.DESCRIPTION Genericname/function ofthepump.CLCOORDISIClassification pertheassociated ISIboundarydrawing(s)
Corresponds to'heflowdiagramcoordinates ofthepump.TestParameters Thetableindicates bya"Y"(yes)or"N"(no)thatthespecificparameter ismeasured, evaluated, andrecordedpertheapplicable Coderequirement.
Ifa"N"isindicated, theassociated reliefrequestnumberisalsonotedinthesamecolumn.PR-XXWhereindicated thisreferstothespecificreliefrequest(SeeAppendixB)relatedtoanydeviation regarding themeasurement oranalysisofaparameter.
REVISION108/04/94AppendixBPumpProgramReliefRequests RELIEFREQUESTNO.PR-1Revision108/04/94WITHDRAWN (Rev1,08/04/94)
RELIEFREQUESTNO.PR-2Revision108/04/94VariousThefull-scale rangeofeachinstrument shallbethreetimesthereference valueorless.(IWP-4120)
Table1WP-4110-1 requirestheaccuracyofinstruments usedtomeasurespeedtobeequaltoorbetterthan+2percentbasedonthefullscalereadingoftheinstrument.
Thismeansthattheaccuracyofthemeasurement canvaryasmuch+6percent,assumingtherangeoftheinstrument extendedtotheallowedmaximum.ThisISTpumpparameter isoftenmeasuredwithportabletestinstruments wherecommercially available instruments donotnecessarily conformtotheCoderequirements forrange.Inthiscase,highqualitycalibrated instruments willbeusedwherethe"reading" accuracyisatleastequaltotheCode-requirement forfull-scale accuracy.
Thiswillensurethatthemeasurements arealwaysmoreaccuratethantheaccuracyasdetermined bycombining therequirements ofTableIWP-4110-1andParagraph IWP-4120.
Wheneverportableinstruments areusedformeasuring pumpspeed,theinstrument (s)willbesuchthatthe"reading" accuracyisasfollowsatleast+2percent.VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a)(3)(i).B-2 RELIEFREQUESTNO.PR-3Revision108/04/94WITHDRAWN (Rev0,07/16/93)
B-3 RELIEFREQUESTNO.PR-4Revision108/04/94Auxiliary Feedwater (AFW)Pumps2Athru2C(2998-G-080, Sh2)INXIEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1)
Thereareonlytwopractical flowpathsavailable forperforming inservice testingoftheAFWPumps.Theseincludetheprimaryflowpathintothemainfeedsupplylinesandthencetothesteamgenerator, andtheminimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstothecondensate storagetank.Theformerisprovidedwithflowratemeasuring instrumentation howeverthemini-recirc lineisafixedresistance circuitwithnoflowinstrumentation.
Pumpingfromtheauxiliary feedwater systemintothesteamgenerators duringplanthotoperation isimpractical andundesirable forthefollowing reasons:*Duringauxiliary feedwater injection viathemainfeedwater lineswhiletheplantisoperating atpower,alargetemperature differential (approximately 375deg-F)couldexistthatwouldresultinsignificant thermalshockandfatiguecyclingofthefeedwater pipingandsteamgenerator nozzles.*Basedontheexpecteddurationofthetestingandtheflowrateofthepumps(150to200gpm),itisexpectedthatthecooldownofthesteamgenerator wouldinducecooldownandcontraction ofthereactorcoolantsystemresulting inundesirable reactivity variations andpowerfluctuations.
B-4 RELIEFREQUESTNO.PR-4(cont.)Revision108/04/94ERNDuringquarterly testingoftheAFWpumpswhilethepumpsareoperating throughthefixed-resistance mini-recirc line,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
Duringtestingperformed atcoldshutdown, pumpdifferential
- pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
Testingduringcoldshutdowns willbeonafrequency determined byintervals betweenshutdowns asfollows:Forintervals of3monthsorlonger-eachshutdown.
Forintervals oflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.pvNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.
RELIEFREQUESTNO.PR-5Revision108/04/94BoricAcidMakeup(BAM)Pumps2Aand2B(2998-G-078, Sh121)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1)
Therearethreepractical flowpathsavailable forperforming inservice testingoftheBAMPumps.Theseincludetheprimaryflowpathintothechargingpumpsuctionheader,arecirculation lineleadingbacktotherefueling watertank,andtheminimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstotheBAMTanks.Noneoftheseflowpaths,istotallysatisfactory forthefollowing reasons:Operating theBAMPumpsdischarging intothechargingpumpsuctionheaderrequirestheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Thisrapidinsertion ofnegativereactivity wouldresultinarapidRCScooldownanddepressurization.
Alargeenoughboronadditionwouldresultinanunscheduled planttripandapossibleinitiation ofSafetyInjection Systems.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldbeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreaseitsboronconcentration.
"B-6 RELIEFREQUESTNO.PR-5(cont,)Revision108/04/94Thesecondcircuitrecirculates watertotheRefueling WaterTank(RWT)ortheVolumeControlTank(VCT).Duringnormalplantoperation atpoweritisundesirable topumptotheRWTanddepletetheBAMTankinventory.
OneofthetwoBAMTanksismaintained atTech.Spec.levelwhiletheotherisusedasrequiredforplantoperation.
TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintained atalevelnearthetopofthetank.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatability wouldbequestionable.
- Theminimum-flow recirculation flowpathisafixedresistance circuit.Noflowratemeasuring instrumentation isinstalled inthislinc'umping boricacidfromtanktotankwouldbepossiblebuttheflowrateswouldbesmall,limitingpumpoperation tothehighheadsectionofthepumpcurve~Inaddition, oneofthetwoBAMTanksismaintained atTech.Spec.levelwhiletheotherisusedasrequiredfornormalplantoperation.
TheTech.Spec.BAMTankcannotbepumpedfrombecauseitmustbemaintained atalevelnearthetopofthetank.Thisnarrowbandlimitstheamountthatcanbepumpedtoitorfromittoonlyafewhundredgallons.TheotherBAMTank'slevelwillvaryfromtesttotestbyasmuchas15to20feet.Thisvarianceinpumpsuctionpressurewillhaveadirectaffectonpumpheadandflowsuchthattestrepeatability wouldbequestionable.
B-7 RELIEFREQUESTNO.PR-5(cont.)Revision108/04/94Duringquarterly testingoftheBAMpumps,whilethepumpsareoperating throughthefixed-resistance mini-recirc line,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP;3200.
Duringtestingperformed ateachreactorrefueling outage,pumpdifferential
- pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-8 RELIEFREQUESTNO.PR-6Revision108/04/94Containment Spray(CS)Pumps2Aand2B(2998-G-088)
Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
Pumpflowrateshallbemeasuredduringthetest.(TableIWP-3100-1)
Therearetwopractical flowpathsavailable forperforming inservice testingoftheCSPumps.Theseincludeonethatpumpsboratedwater,fromtheRWTtotheRCSviathelow-pressureinjection headerandtheother,minimum-flow recirculation (mini-recirc andbypasstestloop)whichreturnstotheRWT.Thefirstwouldrequiremodifying theshutdowncoolinglineupwhileincoldshutdown; however,theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction.
Thus,theonlypractical timefortestingthesepumpsviathisflowpathisduringrefueling outageswhenwaterfromtheRWTisusedtofilltherefueling cavity.Theminimum-flow recirculation flowpathisafixedresistance circuitcontaining aflowlimitingorificehowevernoflowratemeasuring instrumentation isinstalled.
TheCSpumpsareoperatedthroughthefixed-resistance mini-recirclineduringthequarterly pumptesting.Pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
B-9 RELIEFREQUESTNO.PR-6(cont.)Revision108/04/94Duringthepumptestingperformed eachreactorrefueling, pumpdifferential
- pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-10 RELIEFREQUESTNO.PR-7Revision108/04/94WITHDRAWN (Rev0,07/16/93)
RELIEFREQUESTNO.PR-8Revision108/04/94NBoricAcidMakeupPumps2Aand2B(2998-G-078, Sh121)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-'3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300)
Thesysteminstallation doesnotprovideanymechanism formeasuring pumpsuctionpressures, andthus,therequirement formeasuring suctionpressureandpumpdifferential pressures cannotbesatisfied.
Ameasureofpumpsuctionpressurecan,however,bedetermined byacalculation usingtheheightofliquidintheboricacidmakeuptanks.Sincethereisessentially fixedresistances betweenthetanksandthepumpsthiswillprovideaconsistent valueforsuctionpressures'ince thetanklevelsarenotexpectedtovarysignificantly duringthetests,tanklevelsandassociated calculations willonlybetakenonceduringeachtestinsteadofpriortopumpoperation andduringoperation asrequiredbyTableIWP-3100-1.Theboricacidmakeuppumpsuctionpressures willbecalculated basedontheheightofliquidintheassociated tankonceduringeachinservice test.Subsequently, thesecalculated valueswillbeusedtodetermine pumpdifferential pressures forevaluation ofpumpparameters.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a)(3)
(i).B-12 RELIEFREQUESTNO.PR-9Revision108/04/94HighPressureSafetyInjection (HPSI)Pumps2Aand2B(2998-G-078, Sh130)Eachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
BAIDuringquarterly testingoftheHPSIPumps,thepumpscannotdevelopsufficient discharge pressuretoovercomereactorcoolantsystem(RCS)pressure.
Flowisroutedthroughaminimumflowtestlineleadingtotherefueling watertank(RWT).Thislinehasnoinstalled flowratemeasuring'nstrumentation andmeasuring flowrateduringquarterly testingisnotpractical.
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpstotheRCSisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.3.NRCGenericLetter89-04,Position9,allowselimination ofminimumflowtestlineflowratemeasurements providing inservice testsareperformed duringcoldshutdowns orrefueling underfullorsubstantial flowconditions wherepumpflowrateisrecordedandevaluated.
ALTDuringquarterly testingoftheHPSIPumps,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
Duringtestingperformed ateachreactorrefueling, pumpdifferential
- pressure, flowrate,andvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
B-13 Revision108/04/94RELIEFREQUESTNO.'PR-9(cont.)NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.B-14 Revision108/04/94RELIEFREQUESTNO.PR-10LowPressureSafetyInjection (LPSI)Pumps2Aand2B(2998G078'h131)REMENT'ach inservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
Duringquarterly testingoftheLPSIpumps,thepumpscannotdevelopsufficient discharge pressuretoovercomereactorcoolantsystem(RCS)pressure.
Flowisroutedthroughaminimumflowtestlineleadingtotherefueling watertank(RWT).Thislinehasnoinstalled flowratemeasuring instrumentation andmeasuring flowrateduringquarterly testingisnotpractical.
Duringcoldshutdown, theLPSIpumpsareusedforresidualheatremoval.Thesubstantial flowtestscanbeperformed atthistime.Pumpdifferential pressureandflowratewillberecorded.
However,inducedvibrations inthesystempipingwhilethereactorcoolantpumps(RCPs)arerunningmaskanymeaningful LPSIpumpvibration data.Duringquarterly testingoftheLPSIPumps,pumpdifferential pressureandvibration willbemeasuredandevaluated perIWP-3100andIWP-3200.
Substantial flowtestingwillbeperformed duringcoldshutdowns.
Pumpdifferential
- pressure, flowrate,andvibration (ifRCPssecured)willbemeasuredandevaluated perIWP-3100andIWP-3200.
Testingwillbeonafrequency determined byintervals betweenshutdowns asfollows:Forintervals of3monthsorlonger-eachshutdown.
Forintervals oflessthan3months-testingisnotrequiredunless3monthshavepassedsincethelastshutdowntest.
RELIEFREQUESTNO.PR-10(cont.)Revision108/04/94VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position9.
RELIEFREQUESTNO.PR-11Revision108/04/94IntakeCoolingWaterPumps2A,2Band2C(2998-G-082)
EEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1.
(IWP-3300)
Pumpinletpressureshallbemeasuredbeforestartingapumpandduringthetest.(TableIWP-3100-1)
Thepumpslistedaboveareverticallineshaftpumpssubmerged intheintakestructure withnopractical meansofmeasuring pumpinletpressure.
Theinletpressure, however,canbedetermined bycalculation using,asinput,themeasuredheightofwaterabovethepumpinletasmeasuredattheintake.Duringeachinservice test,thewaterlevelintheintakepitremainsrelatively
- constant, thusonlyonemeasurement oflevelandtheassociated suctionpressurecalculation needbeperformed.
Duringtestingofthesepumps,onevalueofinletpressurewillbecalculated basedonwaterlevelattheintakestructure.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50.55a(a)
(3)(i).B-17 RELIEFREQUESTNO.PR-12Revision108/04/94EReactorCoolantChargingPumps2A,2B,and2CETINXIRIRMThefrequency responserangeofthereadoutsystem(forinstrument usedtomeasurevibration amplitude) shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotational speed.(IWP-4520(b))
Thereactorcoolantchargingpumpsoperateatapproximately 210-215rpmwhichequatestoarotational frequency of3'0Hz.Theone-halfminimumspeedfrequency responserequiredforthevibration instrumentation correlates to1.75Hz(105cpm).Thevibration instrumentation presently inuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integrator frequency responseisessentially flatdownto120cpm(cyclesperminute)wherethedisplayed outputoftheinstrument slightlyincreases toapproximately
+ldBat100cpm.The-3dBfrequency responseisreachedatapproximately 54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequency probenominally rateddownto270cpm(-3dB).Thisisonlyslightlyhigherthantheexpectedrotational (1X)speedofthechargingpump(205210cpm).The1X(205cpm.)vibration frequency components willbesomewhatattenuated bytheprobes,butnotcutoff.Overallvibration levelswouldstillshowanincreasing valueifsomeproblemdeveloped whosecharacteristic frequency was1Xrunningspeed.Therearevirtually nomechanical degradations whereonlyasub-synchronous vibration component woulddeveloponthechargingpumps.Forexample:a.Oilwhirl(0.38X-0.48X)isnotapplicable toahorizontal, triplex,reciprocating pump.B-18 RELIEFREQUESTNO.PR-12(cont.)Revision108/04/94b.Alightrub/impactcouldgenerate0.5X(102.5cpm)vibration components, butwouldalsousuallygenerateasequenceofintegerandhalfintegerrunningspeedcomponents.
Aheavyrubgenerates increased integervaluesofmultiplerunningspeedcomponents, aswellasprecessing the1Xphasemeasurement.
Ineithercasetheoverallvibration levelwouldstillshowanincreasefromboththeattenuated sub-synchronous and1Xvibration components aswellasthehigherharmonicvibration components.
c.Looseness inthepowertrainwouldlikelybeindicated byincreasing 1Xand2Xvibration components.
Thesesignalswouldbeslightlyattenuated butagainnotcompletely cutoff.Basedontheaboveinformation, itisourevaluation thatthepresentuseoftheBentlyNevada270cpmprobeswiththeportableTK-81instrument iscapableofcollecting sufficiently reliabledatatoidentifychangesfrombaselinereadingstoindicatepossibleproblemswiththepumps.Duringtestingofthesepumps,thevibration instrumentation usedwillbetheBentlyNevadamodelTK81with270cpmprobesorequivalent.
VThisrevisedreliefrequestispendingNRCapproval.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval.
B-19 RELIEFREQUESTNO.PR-13Revision108/04/94WITHDRAWN (Rev1,08/04/94) s-20 Revision108/04/94RELIEFREQUESTNO.PR-14Hydrazine Pumps2Aand2BIREIREMENThefrequency responserangeofthereadoutsystem(forinstrument usedtomeasurevibration amplitude) shallbefromone-halfminimumspeedtoatleastmaximumpumpshaftrotational speed.(IWP-4520(b))
Thehydrazine pumpsarecharacterized asmeteringpumpsandoperateat,extremely slowspeed(aslowas37rpm).Thisequatestoarotational frequency of0.62Hz.Inaccordance withtheASMECode,thefrequency responseforthevibration instruments wouldhavetobeonehalfofthisor0.31Hz.Instruments satisfying thisrequirement forthehydrazine pumpsarecommercially unavailable.
Thevibration instrumentation presently inuseatSt.LucieistheBentlyNevadamodelTK-81with270cpmprobes.TheTK-81integrator frequency responseisessentially flatdownto120cpm(cyclesperminute)wherethedisplayed outputoftheinstrument slightlyincreases toapproximately
+1dBat100cpm.The-3dBfrequency responseisreachedatapproximately 54cpm.ThevelocityprobesusedwiththeTK-81areaspeciallowfrequency probenominally rateddownto270cpm(-3dB).TINDuringtestingofthesepumps,thevibration instrumentation usedwillbetheBentlyNevadamodelTK81with270cpmprobesorequivalent.
pvThisrevisedreliefrequestispendingNRCapproval.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval.
RELIEFREQUESTNO.PR-15Revision108/04/94MPNENTContainment SprayPumps2Aand2B(2998-G-088)
HiPressSafetyInject.Pumps2Aand2B(2998-G-078 SH130)LoPressSafetyInject.Pumps2Aand2B(2998-G-078 SH130)EIEIEEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300)
Thesysteminstallation does.notprovideanyinstalled suctiongages.Ameasureofpumpsuctionpressurecan,however,bedetermined bycalculation usingtheheightofliquidintherefueling watertank(RWT).Duringthequarterly pumptests,theflowratethroughthesuctionpipingisverylow,therefore, theamountofheadlossisnegligible.
Thisisnotthecaseduringthesubstantial flowtests.Theflowratesusedduringthesetestswouldcauseanoticeable headlossinthesuctionpiping.SinceRWTlevelisnotexpectedtovarysignificantly duringthequarterly tests,RWTlevelandassociated calculations willonlybetakenonceduringeachquarterly testinsteadofpriortopumpoperation andduringoperation asrequiredbyTableIWP-3100-1.
Duringthequarterly pumptests,thepumps'uction pressures willbecalculated basedontheheightofliquidintheassociated RWT.Subsequently, thesecalculated valueswillbeusedtodetermine pumpdifferential pressures forevaluation ofpumpparameters.
Duringthecoldshutdownorrefueling substantial flowtestingofthesepumps,temporary suctiongageswillbeinstalled tomeasurepumpsuctionpressure.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,authorized thisreliefrequestinaccordance with10CFR50'5a(a)(3)(i).B-22 RELIEFREQUESTNO.PR-16Revision108/04/94WITHDRAWN (Rev0,07/16/93)
B-23 RELIEFREQUESTNO.PR-17Revision108/04/94Hydrazine Pumps2Aand2B(2998-G-088)
RTEachinservice testshallincludethemeasurement andobservation ofallquantities inTableIWP-3100-1 exceptbearingtemperatures, whichshallbemeasuredduringatleastoneinservice testeachyear.(IWP-3300)
Symmetrical dampingdevicesoraveraging techniques maybeusedtoreduceinstrument fluctuations towithin2%oftheobservedreading.(IWP-4150)
ThePSLUnit2Hydrazine pumpsarereciprocating positivedisplacement pumpswithvariablespeedcontrol.Thesepumpsarenormallyinastandbycondition andareonlyoperatedduringsurveillance testing.Theyareclassified asmeteringpumpsandaredesignedtoaccurately displaceapredetermined volumeofliquidinaspecificperiodoftime.Thepumphasasingleplungerandmakesonlyonesuctionstrokeandonlyonedischarge strokeduringeachcycle.Thepumpsoperateataveryslowspeed(aslowas37rpm)toproducetheTechnical Specification requiredHydrazine flowrateof0.71to0.82gpm.Pumpflowiscontinuously accelerating anddecelerating following asinusoidal waveform.
Eachcycleofthepumpisapproximately 1.6secondsindurationwithnoflowproducedduringthepumps0.8secondsuctionstroke.Thischaracteristic intermittent andoscillating flowrateisobviously impractical tophysically dampentheobservedreadingtowithin2%usingsymmetrical dampingdevices.Theinstalled flowinstrumentation hasbeendemonstrated tobeinadequate forinservice testingpurposes'his instrumentation utilizesadifferential pressureorificelocatedinthesuctionlinecommontobothpumpstomeasureflow.Flowthroughthisorificepulsatessharplywitheachstrokeofthepump.Thefloworificealsosensespressurefeedbackduringeachcycleofthepumpstroke.Thisfeedbackhasbeendetermined tobeechoesofthepressurepulsations producedbythepumpstrokewhichhavereflected backtotheorificebythesystempipingandvalves.B-24 Revision108/04/94Refueling outagetestinghasdemonstrated thattechniques usedtoaveragetheindicated flowreadingsareinconsistant andinaccurate whencomparedtoactualflow.Trendingtheflowrateusingtheinstalled instrumentation isimpractical duetotheinherentinaccuracies andinstability inmeasuring thepumpflowasdescribed above.Flowinstrumentation whichcanaccurately measuretheHydrazine pumpintermittent andoscillating flowratehasnotbeenlocated.Evenifsuchinstrumentation werefoundtobeavailable thecostsassociated withprocuring andinstalling suchinstrumentation couldnotbejustified.
TheHydrazine pumpsarestandbypumps.Thereisvirtually nomeansforthemechanical condition ofthepumptobecomedegradedbetweenrefueling outageswiththepumponlyrunforquarterly surviellance testing.Theflowrateofthepumpscanbeaccurately obtainedbycollecting thepumpsoutputinacontainer andmeasuring it.Severalflowtestsperhydrazine pumpshavebeenperformed.
Thepumpdischarge wasdirectedtoacontainer ofaknownvolume.Theamountoftimetofillthecontainer wasmeasuredandthenusedtocalculate anaverageflowrateforthepump.Acorrelation betweenpumprpmandaverageflowratewasdeveloped andcomparedtotheexpectedvalue.Themeasuredandtheexpectedcorrelations betweenrpmandflowratewereincloseagreement.
Theexpectedcorrelation wasbaseduponpistondiameter, pistonstroke,andpumprpm.Basedupontheseresults,hydrazine pumpflowratecanbeaccurately setbyselecting theproperpumprpm.Frequentperformance oftheabovementioned flowtestingcannotbeperformed.
Hydrazine isahighlyflammable liquidwithcumulative toxicaffectswhenabsorbedthroughtheskin,inhaled,oringested.
Ithasalsobeenidentified asaknowncarcinogen.
Flowmeasurement performed eachrefueling outageisconsidered byPSLtobeappropriate fordetecting anypumphydraulic degredation.
B-25 Revision108/04/94Duringeachrefueling outageatleastonetestmeasuring actualpumpflowwillbeperformed foreachpumptoverifyproperperformance.
Duringthequarterly pumptests,eachpump'srpmwillbemeasuredtoverifytherequiredflowrateof0.71to0.82gpm.Pumpdischarge pressureandvibration willbemeasuredduringboththequarterly andrefueling outagetests.ThisrevisedreliefrequestispendingNRCapproval.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedAugust23,1993,andMay2,1994,providedinterimapproval.
a-26 REVISION108/04/94AppendixCValveProgramTables REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE:1LEZzRHKVALVENUMBERTheplantalpha-numerical designator forthesubjectvalveCOORDCLCATSIZETYPEA/PThecoordinate locationofthevalveonthedesignated drawingTheISIClassification ofthevalveaspertherespective ISIboundarydrawingsThevalvecategoryperParagraph IWV-2200Thevalve'snominalsizeininchesThevalvetypeTheactive(A)orpassive(P)determination forthevalve.ACT.TYPEThevalveactuatortypeasfollows:AODOMOMANPOS/ASOAir-operated Diaphragm-operated Electricmotor-operated ManualvalvePiston-operated Self-actuated Solenoid-operated NORMPOS.REMINDFAILMODEDesignates thenormalpositionofthevalveduringplantoperation atpowerNotesifavalvehasremotepositionindication Identifies thefailuremode(openorclosed)foravalve.FAIindicates thevalvefails"asis".
REVISION108/04/94FloridaPower6LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE2EXAMIdentifies thetestrequirements foravalveasfollows:CV/cCV/0CV/POECEOFSINSPPECPISLT-1SLT-2SRVCheckvalveexercisetoclosedposition.
Checkvalvefull-stroke exercisetoopenposition.
Checkvalvepartial-stroke exercisetoopenposition.
Exercisetoclosedposition.
ForallcategoryAorBpower-operated valvesstroketimeswillbemeasuredunlessexcludedbyanassociated reliefrequest.Exercisevalvetoverifyproperoperation andstrokingwithnostroketimemeasurements.
Requiresobservation ofsystemparameters orlocalobservation ofvalveoperation.
Exercisetoopenposition.
ForallcategoryAorBpower-operated valvesstroketimeswillbemeasuredunlessexcludedbyanassociated reliefrequest.FailsafetestDisassembly andinspection ofcheckvalvesPartialclosureexerciseforpower-operatedvalvesPositionindication verification Seatleakratetestper10CFR50,AppJSeatleakratetestforpressureisolation valves.Setpointcheckforsafety/relief valves REVISION108/04/94FloridaPower&LightCompanyINSERVICE TESTING-VALVETABLESSt.LucieNuclearPlant-Unit2PAGE:3TESTFREQTherequiredtestintervalasfollows:QRCS2YRFSDQuarterly (duringplantoperation)
ColdshutdownasdefinedbyTechnical Specification Every2yearsEachreactorrefueling outage(cycle).Inthecasewherethisisdesignated forsafety/relief valvesANSI/ASME OM-1-1981 Disassemble, inspect,andmanuallyexerciseonevalvefromspecified groupeachreactorrefueling outageRELIEFREQReferstothespecificreliefrequestassociated withtheadjacenttestrequirement.
(SeeAppendixD)
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:
DATE:08/04/94PAGE:9PaID:2998-G-078 SH121(cont)SYSTEM:CHEMICALANDVOLUHECONTROLACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSV-2507H-72B0.750GLOBEADOLOYESFOECQRPI2YV-2508C-62B3.000GATEAMOCYESFAIEOQRPI2YV-2509C-72B3.000GATEAHOCYESFAIEOQRPI2YV-2514C-32B3.000GATEAMOCYESFAIEOQRPI2YV-2524YESFC,ECFSPISLT-1F-72A0.750GLOBEADO0CSCS2Y2YV-2525E-43B4.000GATEAMOCYESFAIECQRPI2YV-2526E-32C4.000CHECKAS/ACNOCV/0RFCV/POCSV-2650B-42B1.000GLOBEADO0YESFCECFSPIQRQR2YV-2651D-42B1.000GLOBEADO0YESFCECFSPIQRQR2YV~2674F-43C4.000CHECKAS/A0NOCV/0QR
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:
1DATE:08/04/94PAGE:14PaID:2998-G-078 SH130(cont)SYSTEH:SAFETYINJECTION SYSTEMACT.NORHREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSV-3439F-32C1.000RELIEFAS/ACNOSRVRFV-3444E-72B14.000GATEAMOLOYESFAIECQRPI2YV-3456G-42B10.000GATEAMOLCYESFAIEOQRPI2YV-3457F-22B10.000GATEAMOLCYESFAIEOQRPI2YV-3463G"22A2.000GATEAHANLCNOEE'RSLT"12YV-3466G-13C1.500RELIEFAS/ACNOSRVRFV-3495G-62BF000GLOBEASOLOYESFCECQRFSQRPI2YV-3496G-52B6.000GLOBEASOLOYESFCECQRFSQRPI2YV-3507V-3513F-12C1.000RELIEFAS/ACNOSRVG-32C2.000RELIEFAS/ACNOSRVRFRFV-3517H-62B12.000GATEAMOLCYESFAIEOPIQR2YV-3518V-3519C-32B2.000GLOBEAMANCNOFAIEEQRD-42B2.000GLOBEAHANCNOFAIEEQRV-3522B-42C3.000CHECKAS/ACNOCV/CCSCV/O"RFCV/POCSV-3523A-22B3.000GLOBEAMOLCYESFAIECQREOQRPI2Y
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:
1DATE:08/04/94PAGE:16P6ID:2998-G-078 SH131SYSTEM:SAFETYINJECTION SYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSHCV-3615H-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3616G-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3617G-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3625F-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3626E-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV"3627E-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3635D-72B6.000GLOBEAMOCYESFAIEOQRPI2YHCV-3636C-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3637C-72B2.000GLOBEAMOCYESFAIEOQRPI2YHCV-3645B-72B6.000GLOBEAMOCYESFAIEOPIQR2YHCV-3646A-72B2.000GLOBEAMOCYESFAIEOPIQR2YHCV-3647A"72B2.000GLOBEAMOCYESFAIEOQRPI2YV-3113G-72C2.000CHECKAS/ACNOCV/0RFCV/POCSV-3114H-72C6.000CHECKAS/ACNOCV/CCV/0CSCSV"3124F-72C6.000CHECKAS/ACNOCV/CCSCV/0CS
FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucreNuclearPlant-Unit2REVISION:
1DATE:08/04/94PAGE:19P6ID:2998-G-078 SH132SYSTEM:SAFETYINJECTION SYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSHCV-3618E-71B1.000GLOBEADOCYESFCECQRFSQRPI2YHCV-3628E-41B1.000GLOBEADOCYESFCECFSPIQRQR2YHCV-3638HCV-3648B-71B1.000GLOBEADOCYESFCECFSPIB-41B1.000GLOBEADOCYESFCECFSPIQRQR2YQRQR2YSE-03-1AF-32B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE"03-1BF-72B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-03-1CC-72B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YSE-03-1DC-32B1.000GLOBEASOCYESFCECEOFSPIQRQRQR2YV-03002F-73C1.000CHECKAS/ACNOCV/0CSV-03003V-03004V-03005C-73C1.000CHECKAS/ACNOF-43C1.000CHECKAS/ACNOC-43C1.000CHECKAS/ACNOCV/0CV/0CV/0CSCSCSV-3211H-62C1.500RELIEFAS/ACNOSRV
FLORIDAPONERANDLIGHTCOHPANYVALVETABLESSaintLucieNuclearPlant-Onit2REVISION:
1DATE:08/04/94PAGE:23'6ID:2998-G-078 SH153SYSTEM:SAMPLINGSYSTEMACT.NORMREHFAILTESTRELIEFVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODEEXAMFREQREQ.REMARKSSE-05-1AG-72A0.375GLOBEASOCYESFCECQRFSQRPI2YSLT-12YSE-05-1BF-72A0.375GLOBEASOCYESFCECQRFSQRPI2YSLT-12YSE-05-1CE-72A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YSE-05-1DC"72A0.375GLOBEASOCYESFCECFSPISlT"1QRQR2Y2YSE-05-1EG-52A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5200F-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5201E-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5202D-62A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2YV-5203F-52A0.375GLOBEASOCYESFCECFSPISLT-1QRQR2Y2Y
FLORIDAPOWERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:
1DATE:08/04/94PAGE:33P4ID:2998-G-082 SYSTEM:INTAKECOOLINGWATERSYSTEMACT.NORMREMFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSMV-21-2E-53B24.000BUTFLYAMO0YESFAIECQRPI2YMV-21-3E-43B24.000BUTFLYAMO0YESFAIECQRPI2YSR-21196SR-21243C-43C3.000RELIEFAS/ACNOSRVC-53C3.000RELIEFAS/ACNOSRVRFTCV-14-4A B-33B30.000BUTFLYAPO0NOFOEOFSQRQRTCV-14-4B B-43B30.000BUTFLYAPO0NOFOEOFSQRQRV-21162H-43C30.000CHECKAS/A0NOCV/CCV/0QRQRV-21205H-63C30.000CHECKAS/A0NOCV/CCV/0QRQRV-21208H-13C30.000CHECKAS/A0NOCV/CCV/0QRQR
FLORIDAPONERANDLIGHTCOMPANYVALVETABLESSaintLucieNuclearPlant-Unit2REVISION:
1DATE:08/04/94PAGE:45P4ID:2998-G-092 SH1SYSTEH:MISC.SAHPLINGSYSTEMSACT.NORMREHFAILVALVENUMBERCOORD.CLCAT.SIZETYPEA/PTYPEPOS.INDMODETESTRELIEFEXAMFREQREQ.REMARKSFCV-26-1G-22A1.000GLOBEADO0YESFCECQRFSQRPI2YSLT-12YFCV-26-2G-42A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-3H-22A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-4H-42A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-5I-22A1.000GLOBEADO0YESFCECFSPISLT-1QRQR2Y2YFCV-26-61-42A1.000GLOBEADO0YESFCECFSPISLT"1QRQR2Y2YFSE-27-10 B-132A0.375GLOBEASOCYESFCECEOFSPISLT-1QRQRQR2Y2YFSE-27-11 C-132A0.375GLOBEASOCYESFCECEOFSPISLT-1QRQRQR2Y2Y
REVISIONl08/04/94AppendixDValveProgramRequestsforRelief Revision108/04/94RELIEFREQUESTNO.VR-1WITHDRAWN (Rev1,08/04/94)
Revision108/04/94RELIEFREQUESTNO.VR-2WITHDRAWN (Rev1,08/04/94)
D-2 Revision108/04/94BYSX12L'ELIEF REQUESTNO.VR-3VariousVariousVariousThisisagenericrequestforreliefIf,forpower-operated valves,anincreaseinstroketimeof50%ormoreforvalveswithfull-stroke timeslessthanorequalto10secondsisobserved, thetestfrequency shallbeincreased toonceeachmonthuntilcorrective actionistaken,atwhichtimetheoriginaltestfrequency shallberesumed(IWV-3417(a))
EIThestroketimemeasurements takenduringtestingoffast-acting valves(thoselessthan2seconds)aresubjecttoconsiderable variation duetoconditions unrelated tothematerialcondition ofthevalve(eg.testconditions, operatorreactiontime).Inaccordance withGenericLetter89-04,Position6,analternate methodofevaluating stroketimesisconsidered acceptable.
Thestroketimeevaluation forthosevalvesdesignated inthePlantTestProcedures as"fast-acting" willnotaccountforsuccessive increases ofmeasuredstroketimeperIWV-3417(a) withthechangeintestfrequency asrequired.
Inlieuofthis,theassignedmaximumlimitingvalueofstroketimewillbeestablished at2seconds.Uponexceeding the2-secondlimit,thevalvewillbedeclaredinoperable andcorrective actiontakeninaccordance withIWV-3417(b)
.D-3 Revision108/04/94VAL'RCSafetyEvaluation ofSt.LucieUnit2lnservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position6.D-4 Revision108/04/94RELIEFREQUESTNO.VR-4WITHDRAWN (Rev1,08/04/94)
D-5 Revision108/04/94RELIEFREQUESTNO.VR-5WITHDRAWN (Rev1,08/04/94)
D-6 Revision108/04/94RELIEFREQUESTNO.VR-6WITHDRAWN (Rev1,08/04/94)
D-7 Revision108/04/94RELIEFREQUESTNO.VR-7WITHDRAWN (Rev1,08/04/94)
D-8 Revision108/04/94RELIEFREQUESTNO.VR-8WITHDRAWN (Rev1,08/04/94)
D-9 Revision108/04/94RELIEFREQUESTNO.VR-9WITHDRAWN (Rev1,08/04/94)
D-10 Revision108/04/94RELIEFREQUESTNO.VR-10WITHDRAWN (Rev1,08/04/94)
Revision108/04/94RELIEFREQUESTNO.VR-11WITHDRAWN (Rev1,08/04/94)
D-12 Revision108/04/94RELIEFREQUESTNO.VR-12WITHDRAWN (Rev1,08/04/94)
D-13 Revision108/04/94RELIEFREQUESTNO.VR-13BEZEL'afety Injection (2998-G-078 Sh132)V-3215V-3225v-3235V-3245A/CThesevalvesopentoprovideflowpathsfromthesafetyinjection tankstotheRCSandclosetoisolatethetanksfromthehighpressureofthereactorcoolantsystemandthesafetyinjection headers'ECheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Fullstrokeexercising ofthesevalveswouldrequireinjecting fromatankundernominalpressureintoade-pressurized reactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheSITpressureisinsufficient toovercomereactorcoolantsystempressure.
TheinjetheTheinitintThetheonlypractical methodforflowtestingthesafetyctionheadercheckvalvesistodumpthecontentsofSITintothereactorcoolantsystemwhileinMode6.SITdumpisperformed byestablishing adequateialconditions ofwaterlevelandnitrogenpressureheSITwithitsdischarge isolation'alve closed.SITdischarge isolation valveisthenopenedtodumpcontentsoftheSITtothetherefueling cavity.
Revision108/04/94RELIEFREQUESTNO.VR-13(cont.)Thecheckvalvescannotbefullstrokedopenbypassingthemaximumrequiredaccidentcondition flowtosimulatetheLOCAflow.UnderalargebreakLOCAaccidentconditions, themaximum(peak)flowratethroughthesevalveswouldbeapproximately 20,000gpm.Therequiredtestconditions fordeveloping thisfullaccidentflowcannotbeestablished.
TheSITdischarge isolation valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.Theresulting discharge flowratewouldonlyincreasegradually duetothelongstroketimeofthedischarge isolation valve.Theflowratewouldnotbeanywherenearthepeakblowdownrateof20,000gpmexpectedduringalargebreakLOCA.Analysishasshownthatthecheckvalvescanbefullyexercised openwiththelowerthanaccidentcondition flowduringaSITdumptest.Non-intrusive testequipment employing acousticandeddy-current technology canbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Eachofthesevalvesareinstalled inidentical orientation andexposedtothesameoperating conditions.
FP&Lhasreviewedtheoperating andmaintenance historyofthesevalvesandsimilarvalvesusedthroughout theindustryundercomparable conditions.
Basedonthesereviews,thereisnoevidenceofvalvedegradation withrespecttotheirabilitytoopen"andsatisfactorily passtherequiredflow.Itisapparentfromthefailuredatathattheprimarymodeoffailureisrelatedtovalveleakagebothpasttheseatandexternalthroughthebody-bonnet andhingepingasketjoints.Itshouldalsobenotedthatthesevalvesarenotsubjected toanysignificant flowduringplantoperation aswellasmaintenance periods;thusitisunlikelythatthesevalveswouldexperience anyservice-related damageorwear.D-15 Revision108/04/94RELIEFREQUESTNO.VR-13(cont.)Duringeachrefueling outage,eachofthesevalveswillbestrokedtofullyexercisethecheckvalvesopen.Non-intrusive testequipment employing acousticandeddy-currenttechnology willbeusedto'verifythecheckvalvesarestrokedfullyopenduringthesetests.Shouldthealternate testingdescribed abovebedetermined tobeimpractical oranextremehardshipthefollowing willbeperformed inplaceoftheabovedescribed testing.Duringeachrefueling outage,eachofthesevalveswillbepartial-stroke exercised.
Eachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbereinitiated.
Assurance ofproperreassembly willbeprovidedbyperforming apartial-flow testpriortoreturning avalvetoservicefollowing disassembly.
Thealternate testingdescribed inthisreliefrequesthasbeenrevisedtocomplywithNRCGenericLetter89-04,Positions 1or2.
Revision108/04/94RELIEFREQUESTNO.VR-14ZXZZEK'afety Injection (2998-G-078 Sh132)V-3217V-3227V-3237V-3247A/CN'hesevalvesopentoprovideflowpathsfromthesafetyinjection headerstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Fullstrokeexercising ofthesevalveswouldrequireinjecting fromatankundernominalpressureintoade-pressurized reactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheSITpressureisinsufficient toovercomereactorcoolantsystempressure.
Theonlypractical methodforfullflowtestingofthesafetyinjection headercheckvalvesistodumpthecontentsoftheSITintothereactorcoolantsystemwhileinMode6.Shutdowncoolingflowrates arenotsuficient tofullyopenthevalves.TheSITdumpisperformed byestablishing adequateinitialconditions ofwaterlevelandnitrogenpressureintheSITwithitsdischarge isolation valveclosed.TheSITdischarge isolation valveisthenopenedtodumpthecontentsoftheSITtothetherefueling cavity.
Revision108/04/94RELIEFREQUESTNO.VR-14(cont.)Thecheckvalvescannotbefullstrokedopenbypassingthemaximumrequiredaccidentcondition flowtosimulatetheLOCAflow.Under'alargebreakLOCAaccidentconditions, themaximum(peak)flowratethroughthesevalveswouldbeapproximately 20,000gpm.Therequiredtestconditions fordeveloping thisfullaccidentflowcannotbeestablished.
TheSITdischarge isolation valvesaremotoroperatedvalveswithanominalstroketimeof52seconds.Theresulting discharge flowratewouldonlyincreasegradually duetothelongstroketimeofthedischarge isolation valve.Theflowratewouldnotbeanywherenearthepeakblowdownrateof20,000gpmexpectedduringalargebreakLOCA.Analysishasshownthatthecheckvalvescanbefullyexercised openwiththelowerthanaccidentcondition flowduringaSITdumptest.Non-intrusive testequipment employing acousticandeddy-current technology canbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Eachofthesevalvesareinstalled inidentical orientation andexposedtothesameoperating conditions.
FP&Lhasreviewedtheoperating andmaintenance historyofthesevalvesandsimilarvalvesusedthroughout theindustryundercomparable conditions.
Basedonthesereviews,thereisnoevidenceofvalvedegradation withrespecttotheirabilitytoopenandsatisfactorily passtherequiredflow.Itisapparentfromthefailuredatathattheprimarymodeoffailureisrelatedtovalveleakage-bothpasttheseatandexternalthroughthebody-bonnet andhingepingasketjoints.D-18 Revision108/04/94RELIEFREQUESTNO.VR-14(cont.)ETETINDuringeachrefueling outage,eachofthesevalveswillbestrokedtofullyexercisethecheckvalvesopen.Non-intrusive testequipment employing acousticandeddy-currenttechnology willbeusedtoverifythecheckvalvesarestrokedfullyopenduringthesetests.Shouldthealternate testingdescribed abovebedetermined tobeimpractical oranextremehardshipthefollowing willbeperformed inplaceoftheabovedescribed testing.Eachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbereinitiated.
Assurance ofproperreassembly willbeprovidedbyperforming apartial-flow testpriortoreturning avalvetoservicefollowing disassembly.
RVAL'healternate testingdescribed inthisreliefrequesthasbeenrevisedtocomplywithNRCGenericLetter89-04,Positions 1or2.D-19 Revision108/04/94RELIEFREQUESTNO.VR-15WITHDRAWN (Rev1,08/04/94)
D-20 Revision108/04/94RELIEFREQUESTNO.VR-16GXSX12LPrimaryContainment Valves6-inchesNPSandlargersubjecttoleakageratetestingper10CFR50,AppendixJ.A/C(CheckValves)A(Motor-operated valves)Eachofthesevalvesisdesignated asacontainment isolation valvemaintaining theleakrateintegrity oftheprimarycontainment inthecaseofanaccident.
Theleakagerateforvalves6-inchesnominalpipesizeandlargershallbeevaluated perSubsection IWV-3427(b).(IWV-3521)
Theusefulness ofapplyingthisrequirement doesnotjustifytheburdenofcompliance.
Thispositionissupported bytheGenericLetter89-04,Position10.Leakratetestresultsforcontainment isolation valvessix(6)inches nominalpipesizeandgreaterwillbeevaluated perIWV-3426andIWV-3427(a) however,therequirements ofIWV-3427(b) willnotbeapplied.Thissatisfies therequirements ofGenericLetter89-04,Position10.D-21 Revision108/04/94RELIEFREQUESTNO.VR-16(cont.)VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position10.D-22 Revision108/04/94RELIEFREQUESTNO.VR-17WITHDRAWN (Rev0,07/16/93)
D-23 Revision108/04/94RELIEFREQUESTNO.VR-18WITHDRAWN (Rev1,08/04/94)
D-24 Revision108/04/94RELIEFREQUESTNO.VR-19WITHDRAWN (Rev1,08/04/94)
D-25 Revision108/04/94RELIEFREQUESTNO.VR-20BXZGBL.Containment Spray(2998-G-088)
V-07119V-07120Y'hesevalvesopentoprovideflowpathsfromtherefueling watertank(RWT)tothecontainment sprayandsafetyinjection suctionheaders.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Fullstrokeexercising ofthesevalveswouldrequiresimultaneous operation ofoneHPSIpumpandoneLPSIpumpinjecting intotheRCS,andonecontainment spraypumpinjecting intoitssprayheadertoverifythemaximumdesignaccidentflow.Suchatestisnotpractical duringanyplantoperational modes.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised viarecirculation throughtheminimumflowtestcircuitsofthevarioussystems.Thevalveswillalsobepartial-,stroke exercised duringtheseriesofpumpsubstantial flowtestsandcheckvalveexercises performed eachrefueling outage.D-26 Revision108/04/94RELIEFREQUESTNO.VR-20(cont.)Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-27 Revision108/04/94RELIEFREQUESTNO.VR-21WITHDRAWN (Rev1,08/04/94)
D-28 Revision108/04/94RELIEFREQUESTNO.VR-22BXZZE'2L',
Containment Spray(2998-G-088)
V-07172V-07174Thesevalvesopentoprovideflowpathsfromthecontainment sumptothecontainment sprayandsafetyinjection suctionheadersduring.recirculation.
EICheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyINV-3522.
(IWV-3521)
Therearenoprovisions forfullorpartialflowexercising thesevalves.Inordertopassfullflowthroughthesevalves,thecontainment sumpmustbefloodedandfollowedbysimultaneous operation ofoneHPSIpumpinjecting intotheRCSandonecontainment spraypumpinjecting intoitssprayheader.Suchatestisnotpractical duringanyplantoperational mode.Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillberepeated.
D-29 Revision108/04/94RELIEFREQUESTNO.VR-22(cont.)VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-30 Revision108/04/94RELIEFREQUESTNO.VR-23Containment Spray(2998-G-088)
V-07192V-07193Thesevalvesopentoprovideflowpathsfromtherespective containment sprayheaderstothecontainment sprayrings.Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Fullstrokeexercising ofthesevalveswouldrequireoperating eachcontainment spraypumpatnominalaccidentflowrate.Sinceexercising thesevalvesthroughthenormalcontainment sprayflowpathwouldresultinsprayingdownthecontainment, thisisconsidered impractical.
Sinceflowthroughthesevalvesisnotpossible, non-intrusive testmethods,shouldtheybecomeapproved, wouldnotworkonthesecheckvalves.D-31 Revision108/04/94RELIEFREQUESTNO.VR-23(cont.)NTIDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated.
NRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-32 Revision108/04/94RELIEFREQUESTNO.VR-24WITHDRAWN (Rev1,08/04/94)
D-33 Revision108/04/94RELIEFREQUESTNO.VR-25WITHDRAWN (Rev0,07/16/93)
D-34 Revision108/04/94RELIEFREQUESTNO.VR-26WITHDRAWN (Rev0,07/16/93)
D-35 Revision108/04/94RELIEFREQUESTNO.VR-27BXST32L',
Feedwater System(2998-G-080, Sh2)Nv-09303V-09304V-09305TY'hesevalvesopentoprovideflowpathsfromtheauxiliary feedwater pumpdischarge tothecondensate storagetanktoensureadequatepumpcoolingduringlowflowconditions.
Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Thereisnoflowrateinstrumentation available toverifyvalvefull-stroke exercising ofthesevalvesasrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements.
D-36 Revision108/04/94RELIEFREQUESTNO.VR-27(cont.)NTDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability, Shouldavalveunderinspection befoundtobeinoperable, thentheothertwovalveswillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated.
NRCSafetyEvaluation ofSt.LucieUnit2.Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-37 Revision108/04/94RELIEFREQUESTNO.VR-28WITHDRAWN (Rev1,08/04/94)
D-38 Revision108/04/94RELIEFREQUESTNO.VR-29WITHDRAWN (Rev1,08/04/94)
D-39 Revision108/04/94RELIEFREQUESTNO.VR-30GXZGBL.SafetyInjection System(2998-G-078, Sh130)V-3102V-3103Thesevalvesopentoprovideformini-flow recirculation flowpathsfromthehighpressuresafetyinjection p'umpstotherefueling watertank.Thisminimumflowthroughtherespective pumpsremovespumpheatintheeventofoperation underlowornoflowconditions.
Checkvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
FRELIEF'here isnoinstalled flowrateinstrumentation available toverifyvalvefull-stroke exercising asrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised (open)viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements.
D-40 Revision108/04/94RELIEFREQUESTNO.VR-30(cont.)Duringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Inspections shallbescheduled suchthatvalveswillbecheckedinarotatingsequencesuchthateachvalveissubjecttoinspection approximately onceeverythree(3)years.Shouldavalvebefoundtobeinoperable, thentheothervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillberesumed.PPVAL'RCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-41 Revision108/04/94RELIEFREQUESTNO.VR-31MOGUL.MainSteam(2998-G-079, Sh1)V-08130v-08163.Thesevalvesopentosupplysteamtothe2CAuxiliary Feedwater Pump(AFW)turbine.Thesevalvesclosetopreventunrestricted releaseofsteamfromanunaffected steamgenerator intheeventofasteamline ruptureupstreamofanMSIV.MENCheckvalvesshallbeexercised atleastonceevery3months,exceptasprovidedbyIWV-3522.
(IWV-3521)
Thereisnopractical meansorprovision forpressurizing thepipingdownstream ofthesevalvesinordertoverifyclosureofthesevalves.LTDuringthequarterly testofthe2CAFWpump,thesevalveswillbepartial-stroke exercised.
Duringeachcoldshutdownoutagebothofthesevalveswillbefull-strokeexercised duringtheAFWpumpsubstantial flowtests.D-42 Revision108/04/94RELIEFREQUESTNO.VR-31(cont.)ENATDuringeachreactorrefueling outageatleastoneofthesevalveswillbedisassembled, inspected, andmanuallystrokedtoverifyoperability.
Shouldavalveunderinspection befoundtobeinoperable, thentheremaining othervalvewillbeinspected duringthesameoutage,afterwhichtherotational inspection schedulewillbere-initiated.
Following valvere-assembly notestingispossible(partial-flow orleaktesting)priortoplacingthevalvesinservice,thusnonewillbeperformed.
VNRCSafetyEvaluation ofSt.LucieUnit2Inservice TestingProgramReliefRequestsdatedMay2,1994,approvedthisreliefrequestpursuanttoNRCGenericLetter89-04,Position2.D-43 Revision108/04/94RELIEFREQUESTNO.VR-32WITHDRAWN (Rev1,08/04/94)
D-44 Revision108/04/94WITHDRAWN (Rev1,08/04/94)
D-45 Revision108/04/94RELIEFREQUESTNO.VR-34WITHDRAWN (Rev1,08/04/94)
D-46 REVISIONl08/04/94AppendixEValveProgramColdShutdownJustifications REVISION108/04/94AppendixE:COLDSHUTDOWNJUSTIFICATIONS Thisappendixisintendedtoprovidethejustification forperforming valveexercising onlyatcoldshutdownconditions aspermitted byIWV-3412(a),
3415and3522.Specifically includedinthiscategoryarethefollowing:
Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardize theimmediate safetyoftheplantorsystemcomponents; Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguard systemtobeinoperable; Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransient thatcouldleadtoaplanttrip;orWhentestrequirements orconditions areprecluded bysystemoperation oraccess.V-1460thruV-1466ReactorCoolantSystemGasVentsThesevalvesareadministratively controlled inthekey-lockedclosedpositionwiththepowersupplydisconnected topreventinadvertent operation.
SincetheseareClass1isolation valvesforthereactorcoolantsystem,failureofavalvetocloseorsignificant leakagefollowing closurecouldresultinalossofcoolantinexcessofthelimitsimposedbyTechnical Specification 3.1.3leadingtoaplantshutdown.
Furthermore, ifavalveweretofailopenorvalveindication failtoshowthevalvereturnedtothefullyclosedpositionfollowing exercising, prudentplantoperation wouldprobablylikelyresultinaplantshutdowns REVISION108/04/94V-1474andV-1475Power-Operated ReliefValvesDuetothepotential impactoftheresulting transient shouldoneofthesevalvesopenprematurely orstickintheopenposition, itisconsidered imprudent tocyclethemduringplantoperation withthereactorcoolantsystempressurized.
V-2522LetdownLineContainment Isolation ValveClosingthisvalveduringoperation isolatestheletdownlinefromtheRCSandwouldresultinundesirable pressurizer leveltransients withthepotential foraplanttrip.Ifavalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired.
V2177'2190'2191andV2526CVCSBoronAdditionValvesCV/POtestisaddressed inRefueling OutageJustification V-2501VolumeControlTankOutletValveCyclingthisvalveduringoperation ofachargingpumpwouldisolatetheVCTfromthechargingpumpsuctionheaderdamaginganyoperating chargingpumpsandinterrupting theflowofchargingwaterflowtotheRCSwiththepotential ofRCStransients andplanttrip.V-2505andV-2524RCPControlBleedoffIsolation ValvesExercising eitherofthesevalvestotheclosedpositionwhenanyofthereactorcoolantpumps(RCP's)areinoperation wouldinterrupt flowfromtheRCPsealsandresultindamagetothepump(s).E-2 REVISION108/04/94SE-02-03andSE-02-04Auxiliary Pressurizer SprayValvesOpeningeitherofthesevalves(orfailureintheopenposition) duringplantoperation wouldcauseanRCSpressuretransient thatcouldpotentially adversely affectplantsafetyandleadtoaplanttrip.Inaddition, thepressurizer spraypipingwouldbesubjected toundesirable thermalshock.V-2431Auxiliary Pressurizer SprayCheckValveInordertotestthisvalve,eitherSE-02-03orSE-02-04mustbeopened.Openingeitherofthesevalves(orfailureintheopenposition) duringplantoperation wouldcauseanRCSpressuretransient thatcouldpotentially adversely affectplantsafetyandleadtoaplanttrip.Inaddition, thepressurizer spraypipingwouldbesubjected toundesirable thermalshock.V-2440ChargingPumpDischarge CheckValveToSafetyInjection Openingthisvalverequiresoperating achargingpumpanddischarging intotheRCSviathesafetyinjection nozzles.Thermalcyclingofthesafetyinjection nozzlesisundesirable andshouldbeavoided.V-2515andV-2516LetdownLineIsolation ValvesClosingthesevalvesduringoperation isolatestheletdownlinefromtheRCSandwouldresultinundesirable pressurizer leveltransients withthepotential foraplanttrip.Ifavalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired.
V-2523ChargingLineIsolation ValveClosingthisvalveduringoperation isolatesthechargingpumpsfromtheRCSandwouldresultin.undesirable pressurizer leveltransients withthepotential foraplanttripandpotential damagetothechargingpumps.Ifthevalvefailedtoreopen,thenanunexpected plantshutdownwouldberequired.
E-3 REVISION108/04/94V-3101SafetyInjection SupplyToVolumeControlTankCV/POtestisaddressed inRefueling OutageJustification.
V-3106andV-3107LPSIPumpDischarge CheckValvesDuringnormalplantoperation, theLPSIPumpscannotdevelopsufficient discharge pressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection.
Thesevalveswillbepartialflowexercised quarterly andfullflowexercised eachcoldshutdown.
V-3414andV-3427HPSIPumpDischarge CheckValvesCV/POtestisaddressed inRefueling OutageJustification.
V-3522andV-3547HPSIHotLegInjection CheckValveCV/POandCV/Ctestsareaddressed inRefueling OutageJustification.
V-3113,V-3133,V-3143,andV-3766HPSIColdLegInjection CheckValvesCV/POtestisaddressed inRefueling OutageJustification.
V-3114,V-3124,V-3134,andV-3144LPSIColdLegInjection CheckValvesDuringnormalplantoperation, theLPSIPumpscannotdevelopsufficient discharge pressuretopumpthroughthesevalvestotheRCSandexercisethemintheopendirection.
Theclosuretestscanonlybeperformed attheendoftheoutageafterthevalveshavebeenexercised openearlierbythepartialstrokeopentests.E-4 REVISION108/04/94V-3480,3481,3651,and3652ShutdownCoolingRCSIsolation ValvesThesevalvesareprovidedwithelectrical interlocks thatpreventopeningwheneverReactorCoolantSystempressureexceeds275psia.Thisprecludes exercising thesevalvesinanyplantcondition otherthancoldshutdown.
V3524'3525~V3526/V3527HPSIHotLegInjection CheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Performing leaktestsofV-3524andV-3526involvesaconsiderable effort.Thetestconnection forthesevalvesarelocatedinahighradiation areainthepipepenetration room,andoneofthetwoconnections islocatedover12feetabovethefloor.Testingduringoperation wouldconstitute anunreasonable burdenontheplantstaff.Theothercheckvalves,V-3525andV-3527,haveupstreampressurealarms.Shouldeithervalveleakby,thepressureinstruments woulddetecttheincreaseandalarminthecontrolroomwhenthealarmsetpointisexceeded.
Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents.
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing.
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.PriortoenteringMODE2whenevertheplanthas=beeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.E-5 REVISION108/04/943.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4.Following valveactuation duetoflowthroughthevalve.CV/POtestisaddressed inRefueling OutageJustification.
V-3545ShutdownCoolingCrossConnectValveThebreakerforthisvalveisrequiredtobedeenergized exceptduringplantcoldshutdownorrefueling modestomeetpositionC.ltoRegulatory Guide1.63revision2.Thisistoprotectthemechanical integrity ofthevalveselectrical penetration assemblyshouldthemaximumshort-circuit vstimecondition occurgivensinglerandomfailureofcircuitoverloadprotection devices.V-03002thruV-03005SafetyInjection Tank(SIT)DrainLineCheckValvesExercising thesevalvesrequiresdrainingofeachoftheSITs.Thisisnotconsidered tobeanappropriate norprudentactivitytoperformduringplantoperation duetotheobvioussafetyissuesrelatedtoSITinventory andchemistry control.V-3215,V-3225,V-3235,andV-3245SafetyInjection Discharge CheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents.
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotE-6 REVISION108/04/94warranted andimplementation wouldbedifficult andconfusing.
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetesting'has notbeenperformed intheprevious9months.3.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4,Following valveactuation duetoflowthroughthevalve.V-3217,V-3227,V-3237,andV-3247SafetyInjection HeadertoRCSCheckValvesThesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoverifytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents.
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves.Satisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing.
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobewithinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months'.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.E-7 REVISION108/04/943.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4.Following valveactuation duetoflowthroughthevalve.CV/POtestisaddressed inReliefRequestVR-14V-3258,V-3260,V-3259,andV-3261SafetyInjection HeaderCheckValvesThesevalvesopentoprovideflowpathsfromthehigh/lowpressuresafetyinjection headerstotheRCSandclosetoisolatetheheadersfromthehighpressureofthereactorcoolantsystem.Sincenofullflowrecirculation pathexists,fullstrokeexercising ofthesevalveswouldrequireoperating alowpressuresafetyinjection (LPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheLPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure.
Partialflowexercising ofthesevalvesisperformed wheneveritsassociated SITisrefilled.
ThesevalvesarePressureIsolation Valveswhichrequiresthattheyareverifiedclosedandleaktestedwithin24hoursfollowing flowthroughthem.Theacceptable SITlevelbandspecified bytheTechnical Specification isverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Thesearesimplecheckvalveswithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Leaktestingtoveri,fytheclosurecapability ofthesevalvesisprimarily forthepurposeofconfirming theircapability ofpreventing over-pressurization andcatastrophic failureofthesafetyinjection pipingandcomponents.
Inthisregard,theSt.Lucie2Technical Specification 4.4.6.2.2 addresses thevalvetestfrequency inamannerappropriate forthesevalves'atisfying boththeTechnical Specification andtheCodeacceptance criteriaisnotwarranted andimplementation wouldbedifficult andconfusing.
Therefore, theclosurecapability ofthesecheckvalvesshallbedemonstrated byverifying leakagetobeE-8 REVISION108/04/94withinitslimitsduringcoldshutdownoutagesonlywhenanyofthefollowing conditions aremet:Atleastonceper18months.2.3.PriortoenteringMODE2whenevertheplanthasbeeninCOLDSHUTDOWNfor72hoursormore~ifleakagetestinghasnotbeenperformed intheprevious9months.Priortoreturning thevalvetoservicefollowing maintenance, repairorreplacement workonthevalve.4,Following valveactuation duetoflowthroughthevalve.V-3614,V-3624,V-3634,andV-3644SITDischarge Isolation ValvesStroketestingthesevalvesinthecloseddirection duringnormaloperation isnotpossible.
Thevalvesarenormallylockedopenwiththeirbreakeropened.Alsotheyareinterlocked withpressurizer pressuretopreventthesevalvesfromclosingwithRCSpressure>276psia.Therefore, thevalvescannotbecycledexceptduringcoldshutdowns.
V-3733thruV-3740SITVentValvesCyclinganyofthesevalvesduringnormalplantoperation withtheSITspressurized isundesirable sinceifavalveweretofailtore-closetheresultwouldbedepressurization oftheaffectedSIT.V-6792NitrogenGasSupplyContainment Isolation CheckValveThisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandthusisimpractical tododuringplantoperations.
E-9 REVISION108/04/94HCV-08-1A&BMainSteamIsolation ValvesDuringplantoperation atpower,fullclosureofeitherofthesevalvesisnotpractical asitwouldrequireisolating asteamgenerator whichwouldresultinaseveretransient onthesteamandreactorsystemsandapossibleplanttrip.V-08130andV-08163Steam-Driven AFNPumpSteamSupplyCheckValvesFullstrokeoperation ofthesevalvesrequiresoperating 2CAFWPumpandfullaccidentflowratewhichisnotpractical duringplantoperation atpower.(SeeReliefRequestPR-4)HCV-09-1A&BandHCV-09-2A&BMainFeedwater Isolation ValvesDuringplantoperation atpower,closureofanyofthesevalvesisnotpractical asitwouldrequireisolating asteamgenerator whichwouldresultinaseveretransient onthesteamandreactorsystemsandaplanttrip.V-09107,09123,and09139Auxiliary Feedwater PumpDischarge CheckValvesFull-stroke exercising ofthesevalveswouldrequireoperation oftherelatedauxiliary feedwater pumpandinjection ofcoldwater(85deg-F)intothehot(450deg-F)'eedwater supplypiping.This,inturn,wouldresultinunacceptable thermalstressonthefeedwater systempipingcomponents.
V-09119,09135,09151,and09157Auxiliary Feedwater SupplyCheckValvesFull-stroke exercising ofthesevalveswouldrequireoperation ofarelatedauxiliary feedwater pumpandinjection ofcoldwater(85deg-F)intothehot(450deg-F)feedwater supplypiping.This,inturn,wouldresultinunacceptable thermalstressonthefeedwater systempipingcomponents.
REVISION108/04/94HCV-14-1, 2,6&7RCPCoolingWaterSupply/Return Isolation ValvesThesevalvesarerequiredtobeopentoensurecontinued coolingofreactorcoolantpumpauxiliary components andthecontrolroddrives.Closinganyofthesevalvesduringplantoperation wouldresultinsevereRCPandCRDdamageleadingtoplantoperation inapotentially unsafemodeandasubsequent plantshutdown.
HCV-14-3A&BShutdownHeatExchanger ReturnValvesTestingeitherofthesevalvesduringplantoperation wouldresultinanunbalanced flowcondition intheaffectedCCWtrainanddecreased flowtoessential equipment.
Thiscouldresultincomponent damageoranundesirable planttransient.
V-181270ServiceAirContainment Isolation CheckValveDuringnormalpoweroperation, theserviceairsupplytothecontainment buildingisisolated.
Thecontainment isolation valves,HCV-18-2, isanormallyshutvalveusedtoisolatetheserviceairsysteminsidecontainment.
Testingacheckvalveinanisolatedsectionofasystemisnotwarranted.
Thecheckvalvewillbebackflowtestedduringcoldshutdowns whenthesectionoftheserviceairsysteminsidethecontainment buildingisinservice.Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandthusisimpractical tododuringplantoperations.
REVISION108/04/94HCV-18-1PrimaryContainment Instrument-AirSupplyClosingthisvalveisolatesoperating airtocriticalcomponents inthecontainment buildingincluding thepressurizer sprayvalvesandCVCSletdownisolation valvesandcouldcausesevereplanttransients andaplanttrip.Failureintheclosedpositionwouldcauseaplantshutdown.
V-27101andV-27102HydrogenSamplingReturnLineContainment Isolation CheckValvesThisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureistoperformabackleakage test.Performing suchatestrequiresentryintothecontainment buildingandbreaching ofthesystem,thusitisimpractical tododuringplantoperations.
FCV-25-1thruFCV-25-6PrimaryContainment PurgeandVentValvesThesevalvesarerequiredtoremainclosedatalltimeswhentheplantisoperating inModes1through4,thustheyarenotrequiredtooperate(close)duringoperational periods.Duetothelargesizeofthesevalvesandthepotential fordamageasaresultoffrequentcycling,itisnotprudenttooperatethemmorethanisabsolutely necessary.
V-25-20andV-25-21Containment VacuumBreakersThesevalvescanonlybeexercised manuallyrequiring directaccesstoeachvalve.Sincethesevalvesarelocatedwithinthecontainment
- building, accessislimitedandnotroutinely practical.
REVISION108/04/94AppendixFValveProgramRefueling OutageJustifications REVISION108/04/94AppendixF:REFUELING OUTAGEJUSTIFICATIONS Thisappendixisintendedtoprovidethejustification forperforming valveexercising onlyatrefueling outageconditions aspermitted byOM-10,'H4.3.2.2 (d),(e),and(h)and'1[4.2.1.2 (d),(e),and(h)Specifically includedinthiscategoryarethefollowing:
Avalvewhosefailureinapositionotherthanitsnormalpositioncouldjeopardize theimmediate safetyoftheplantorsystemcomponents; Avalvewhosefailureinapositionotherthanitsnormalpositioncouldcausealltrainsofasafeguard systemtobeinoperable; Avalvewhosefailureinapositionotherthanitsnormalpositionthatmightcauseatransient thatcouldleadtoaplanttrip;orWhentestrequirements orconditions areprecluded bysystemoperation oraccess.
REVISION108/04/94V-2177V-2190V-2191v-2526ChemicalandVolumeControl(2998-G-078, Sh121)V-2177andV-2526opentoprovideaflowpathforemergency borationfromtheboricacidmakeuppumpstothesuctionofthechargingpumps.Likewise, V-2190openstoprovideaflowpathforemergency borationviagravitydrainfromtheboricacidmakeuptankstothesuctionofthechargingpumps.ValveV-2191openstoprovideaflowpathfromtherefueling watertank(RWT)tothesuctionofthechargingpumpsasanalternate supplyofboratedwaterforboration.
Testingthesevalvesintheopendirection requirestheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuction.ofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Arapidinsertion ofnegativereactivity couldresultinarapidRCScooldownanddepressurization andpossiblyaplanttrip.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldalsobeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreasetheboronconcentration.
Typically, theboronconcentration isincreased forshutdownmarginduringcooldownandpriortoreachingcoldshutdownconditions.
Thisistheonlypractical timetoperformthepartialstrokeexercisetestsinceborationduringshutdownandstartupisundesirable.
Intheeventthatcircumstances prohibittestingduringcooldown, testingforthatcoldshutdownmaybedeferredtothenextcooldownevolution.
F-2 REVISION108/04/94V-2443V-2444ChemicalandVolumeControl(2998-G-078, Sh121)Thesevalvesopentoprovideaflowpathfromtheboricacidmakeuppumpstotheemergency borationheader.Theyclosetopreventrecirculation flowthroughanidlepump.Full-stroke testingthesevalvesrequiresoperating theboricacidmakeuppumpsatornearratedflowandverifying Cullaccidentflowthrougheachvalve.Suchtestingwouldcausetheintroduction ofhighlyconcentrated boricacidsolutionfromtheboricacidmakeuptankstothesuctionofthechargingpumps.This,inturn,wouldresultintheadditionofexcessborontotheRCS.Thisrapidinsertion ofnegativereactivity wouldresultinarapidRCScooldownanddepressurization.
Alargeenoughboronadditionwouldresultinanunscheduled planttripandapossibleinitiation ofSafetyInjection Systems.Duringcoldshutdown, theintroduction ofexcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemwouldbeoverburdened bythelargeamountsofRCScoolantthatwouldrequireprocessing todecreaseitsboronconcentration.
Asecondcircuitthatcirculates watertotheVCThasflowratemeasuring instrumentation installed howeveritislimitedtoapproximately 30gpm.Duringanaccident, eitherpump'sdischarge checkvalvemustbeabletopassaminimumflowcapableofmatchingthedemandofthetworunningchargingpumps(greaterthan80gpm.).F-3 REVISION108/04/94V-07000V-07001SafetyInjection (2998-G-078 Sh130)ThesevalvesopentoprovideflowpathsfromtheRWTtothesuctionoftheassociated low-pressure safetyinjection pump.Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection intotheRCSviatheLPSIpumps.Duringplantoperation thisisprecluded becausetheLPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure.
Atcoldshutdown, theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction.
Thus,theonlypractical opportunity fortestingthesevalvesisduringrefueling outageswhenwaterfromtheRWTisusedtofilltherefueling cavity.
REVISION108/04/94V-3101GXSX12L'.
SafetyInjection(2998-G-078 Sh130)Thisvalveopenstoprovidea.flowpathforboratedwaterfromthesafetyinjection tanks(SIT's)tothevolumecontroltank(VCT)toprovidesufficient waterinventory forplantcooldownshouldtherefueling watertank(RWT)becomeunavailable.
Transferring thelargequantityofwaterfromaSITtotheVCTneededtoverifyfullstrokewouldresultinasignificant increaseoftheboronconcentration withintheVCTandinthechargingsystemmakeuptothereactorcoolantsystem(RCS)aswell.Duringnormalplantoperation, anyincreaseoftheVCTboronconcentration couldresultintheexcessive boronconcentration intheRCSalongwiththeinsertion ofnegativereactivity.
Ultimately, theRCSwouldexperience cooldownanddepressurization withthepotential foraplanttrip.Duringcoldshutdown, the,introduction of'xcessquantities ofboricacidintotheRCSisundesirable fromtheaspectofmaintaining properplantchemistry andtheinherentdifficulties thatmaybeencountered duringthesubsequent startupduetoover-boration oftheRCS.Thewastemanagement systemcouldalsobeoverburdened bythelargeamountsof.RCScoolantthatwouldrequireprocessing following dilutionactivities.
Duringcoldshutdown, transferring alimitedquantityofwater(lessthanthatneededtoconfirmfullstroke)fromaSITispractical.
F-5 REVISION108/04/94V-3104V-3105BYSXJ'SafetyInjection System(2998-G-078, Sh130)Thesevalvesopentoprovideformini-flow recirculation flowpathsfromthelowpressuresafetyinjection pumpstotherefueling watertank.Thisminimumflowthroughtherespective pumpsremovespumpheatintheeventtheyareoperating underlowornoflowconditions.
Thevalvesclosetopreventrecirculation throughtheidlepump,andtopreventoverpressurization oftheLPSIpipingfromthedischarge pressureoftheHPSIpump.Thereisnoflowrateinstrumentation available toverifyvalvefull-stroke exercising asrequiredbyGenericLetter89-04,Position1.Duringquarterly pumptestingeachofthesevalveswillbepartial-stroke exercised (open)viarecirculation throughtheminimumflowtestcircuitswithnoflowmeasurements.
Duringreactorrefueling outagesthesetwovalvescanbeflowtested.Thetestwillcalculate theflowthroughthemini-flow linebydrainingthereactorcoolantsystemthroughthelinewhileobserving thepressurizer leveldroporrefueling watertanklevelincrease.
Thelevelchangedividedbythetimecanbeusedtoverifythefullflowexerciseofthetwocheckvalves'-6 REVISION108/04/94V-3401V-3410SYZZEZL.SafetyInjection (2998-G-078 Sh130)ThesevalvesopentoprovideflowpathsfromtheRWTandthecontainment sumptothesuctionoftheassociated high-pressuresafetyinjection pumps(HPSI).Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection viatheHPSIpumpsintotheRCS.Duringplantoperation thisisprecluded becausetheHPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure.
Duringcoldshutdownconditions, operation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.F-7 REVISION108/04/94V-3414V-3427BX.~ZSafetyInjection (2998-G-078 Sh130)Thesevalvesopentoprovideflowpathsfromtherespective HPSIpumpstothehigh-pressure safetyinjection headers.Theyclosetopreventrecirculation throughanidlepump.Fullstrokeexercising thesevalvestotheopenpositionrequiresinjection intotheRCSviatheHPSIpumps.Duringplantoperation thisisprecluded becausetheHPSIpumpscannotdevelopsufficient discharge pressuretoovercomeprimarysystempressure.
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partialflowexercising ofthesevalvescanbeperformed byoneofthefollowing twomethods:whentheHPSIpumpisusedtorefillaSITorwhenaHPSIpumpisrecirculated backthroughtheSITtoRWTdrainline.Partial-stroke exercising thecheckvalvesbyfillingaSITcannotreadilybeusedbecausetheacceptable SITlevelband,specified bytheTechnical Specifications, isverynarrow.TheSITareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,be'openedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.F-8 REVISION108/04/94v-3522V-3547SYST1~SafetyInjection (2998-G-078 Sh130)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection pumpstotheRCSforhot-leginjection.
Shouldthenormalchargingheaderbecomedisabled, thesevalvesarerequiredtoclosetodirectchargingflowtotheRCSviatheHPSIheaders.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpandinjecting intothereactorcoolantsystemthroughthehotleginjection system.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure.
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.Theclosuretestscanonlybeperformed attheendoftheoutageafterthevalveshavebeenexercised openearlierbythepartialstrokeopentests.F-9 REVISION108/04/94V-3113V-3133V-3143V-3766BYE~SafetyInjection (2998-G-078 Sh131)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection headerstotheRCS.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure.
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partialflowexercising ofthesevalvesisperformed wheneveritsassociated SITisrefilled.
Theacceptable SITlevelbandspecified bytheTechnical Specification isverynarrow.TheSITsareonlyrefilledonanasneededbasis;therefore, thepartialflowtestcannotreadilybeincorporated intoaquarterly test.Partial-stroke exercising ofthesecheckvalvesquarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolati'on valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.
REVISION108/04/94V-3524v-3525V-3526V-3527GYKXK'afety Injection (2998-G-078 Sh131)Thesevalvesopentoprovideflowpathsfromthehigh-pressuresafetyinjection pumpstotheRCSforhotleginjection andclosetoisolatethesafetyinjection headersfromthehighpressureofthereactorcoolantsystem.Fullstrokeexercising ofthesevalveswouldrequireoperating ahighpressuresafetyinjection (HPSI)pumpatnominalaccidentflowrateandinjecting intothereactorcoolantsystem.Atpoweroperation thisisnotpossiblebecausetheHPSIpumpsdonotdevelopsufficient discharge pressuretoovercomereactorcoolantsystempressure.
Duringcoldshutdownconditions, fullflowoperation oftheHPSIpumpsisrestricted toprecludeRCSsystempressuretransients thatcouldresultinexceeding thepressure-temperature limitsspecified intheTechnical Specifications, Section3.4.9.Partial-stroke exercising ofcheckvalvesV-3524andV-3526quarterly cannotbeperformed byusingtheSITtoRWTdrainline.Thismethodrequiresthatthecontainment isolation valves,oneofthemamanualvalve,beopenedtocompletetheflowpath.Thiswouldconstitute abreachofcontainment integrity, asdefinedinTechnical Specifications 3.6.1.1,andtherefore useofthisflowpathisprecluded inModes1,2,3,and4.
REVISION108/04/94BEEZER'akeupWater(2998-G-084)
V-15328Thisvalveclosestoprovideprimarycontainment forthepenetration relatedtothemakeupwatersupplylinetothecontainment building.
Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Performing suchatestdemandsthatthemakeupwatersupplylinebeisolated.
Thiseffectively isolatesthesolesupplyoffirewatertothecontainment whichisunacceptable underanyplantconditions.
Thus,priortoleaktesting inthismanneranalternate firewater sourcemustbeestablished byriggingseveraltemporary firehosesthroughthemaintenance hatchtothevariousfirefightingstationsinthecontainment building.
Thisisnotpossibleduringnormaloperation whenprimarycontainment isrequiredand.wouldconstitute anundueburdenonplantpersonnel duringcoldshutdowns.
F-12 REVISION108/04/94V-18195Instrument Air(2998-G-085, Sh2)Thisvalveclosestoprovideprimarycontainment forthepenetration relatedtotheinstrument airsupplylinetothecontainment building.
Thisisasimplecheckvalvewithnoexternalmeansofpositionindication, thustheonlypractical meansofverifying closureisbyperforming aleaktestorbackflowtest.Suchatestnecessitates isolation ofallinstrument airtothecontainment.
Thereareover50valves,instruments, andcontrollers suppliedbythisoneline.Duringanormalrefueling outagewhenleaktestingisnormallyperformed, analternate instrument aircompressor mustbeconnected totheisolatedsectionoftheinstrument airlineinordertosupplyairtocriticalair-operated components.
Thesupplyhosefromtheaircompressor totheinstrument airlineistypically routedthroughthecontainment maintenance hatch.Duringnormalplantoperation thisisnotpractical duetothemanycriticaloperational components suppliedbytheinstrument airsystem,therequirement tomaintainprimarycontainment integrity, andthepotential forunacceptable planttransients.
Duringcoldshutdown, theactivities associated withentryintothecontainment
- building, securingallinstrument airinsidethecontainment, andopeningthemaintenance hatchtoprovidethealternate airsupplyareextensive andwouldlikelyresultinanextension ofanyinterimoutage(coldshutdownperiod).Thustestingthisvalveduringcoldshutdownperiodsisconsidered tobeanunreasonable burdenontheplantstaffandnotcommensurate withthepotential gaininplantsafetyaffordedbyperformance ofthistest.
REVISION108/04/94V-07129V-07143GYGXlRL'ontainment Spray(2998-G-088)
Thesevalvesopentoprovideflowpathsfromtherespective containment spraypumptothecontainment sprayheaders.Fullstrokeexercising ofthesevalveswouldrequireoperating eachcontainment spraypumpatnominalaccidentflowrate.Exercising thesevalvesviathenormalcontainment sprayflowpathwouldresultinsprayingdownthecontainment
-anunacceptable option.Theonlyotherpractical flowpathavailable forsuchatestrequirespumpingwaterfromtherefueling watertank(RWT)tothereactorcoolantsystem(RCS)viatheshutdowncoolingloops.Duringplantoperation, thecontainment spraypumpscannotdevelopsufficient discharge pressuretoovercomeRCSpressure.
Atcoldshutdown, theshutdowncoolingsystemcannotprovidesufficient letdownflowtotheRWTtoaccommodate fulldesignflowfromtheRWTwhilemaintaining thenecessary corecoolingfunction.
F-14 REVESXON108/04/94BYSZl~H'ontainment Spray(2998-G-088)
V-07256V-07258ThesevalvesopentoprovideflowpathsfromtheHydrazine pumpstotherespective containment spraypumpsuctionheader.Testingthesevalvesusingtheonlyflowpathavailable (viatheHydrazine pumps)wouldcontaminate thecontainment spraysystemandrefueling watertankwithHydrazine.
EachoftheHydrazine pumpsdischarge throughitscheckvalveintothesuctionpipingofitscontainment spraypump.TheHydrazine wouldthenbepumpedtotheRWTduringthequarterly containment spraypumpCodetestusingthemini-flow recirculation line.Continued testingwouldbuilduptheconcentration ofHydrazine intheRWTanddepletethelevelinitsstoragetankHydrazine isaknowncarcinogen, withcumulative toxicaffectswhenabsorbedthroughtheskin,inhaled,oringested.
Hydrazine buildupintheRWTisundesirable dototheincreased potential forexposingpersonnel tothechemicalorreleasing ittotheenvironment.
Personnel wouldadditionally beexposedtoHydrazine whilerestoring levelinthetank.Duetothepersonnel hazardsassociated withhandlingthehazardous chemicalHydrazine, testingquarterly orduringcoldshutdowns isimpractical.
F-15