ML17207A695

Technical Evaluation Opposing Proposed Tech Spec Changes That Remove Requirement for 8-h Ac Power Source Surveillance When Limiting Conditions for Operation Are Not Met.Changes Do Not Conform to Reg Guide 1.93 or Tech Specs

ML17207A695
Person / Time
Site:	Saint Lucie
Issue date:	09/30/1979
From:	EG&G IDAHO, INC.
To:
Shared Package
ML17207A693	List: ML17207A692 ML17207A694 ML17207A695
References
TAC-6726, NUDOCS 7912310154
Download: ML17207A695 (5)

Text

TECHNICALEVALUATIONREPORTST.LUCIEUNIT1PROPOSEDTECHNICALSPECIFICATIONCHANGESTAC6726PREPAREDBYEGBGIdaho,Inc.

TECHNICALEVANUATIONREPORTST.LUCIEUNIT1TECHNICALSPECIFICATIONCHANGE(SurveilancerequiremencsforiCpowersourceswnenLCOpowerconditionsarenotmet)Docket50-33

51.0INTRODUCTION

Theobjectiveofthisreviewistomakerecommendationsonpro-posedchangestotheSt.LucieUnit1TechnicalSpecification3.8.1.1,ActionStatements"a"and"b".ThesechangeswereproposedbyFloridaPowerandLightCompanyintheirletter.UhriotoStello.datedSeo-tember8,1978.Thesechangeswouldremovetherequirementforanleight-hourverificationoftheoffsiteACpowersource(s)integrityandtheavailabilityoftheremainingdiesel-generator(s)ifoperationisallowedwhen"LimitingConditionsforOperation"ACpowerrequirementsarenotmet.2.0SURVEILLANCEREQUIREMENTS,Section50.36(c)(2),"LimitingConditionsforOperation,"of10CFRPart50,"LicensingofProductionandUtilizationFacilities,"requirestheTechnicalSpecificationstoincludethe"LimitingCondi-tionsforOperation"(LCO)andactionsrequiredtobetakenbythelicenseewhentheLCOarenotmet.PoweroperationmaybeinitiatedandcontinuedwithoutrestrictiononlywhentheLCOaremet.SurveillancerequirementswhichareacceptabletothestaffareincludedinRegulatoryGuideI;93,"AvailabilityofElectricPowerSources."Theregulatorypositionis:"MhenevertheTechnicalSpecificationsallowpoweroper-ationtocontinueduringaspecificdegradationlevel,suchcontinuedpoweroperationshouldbecontingenton(a)animmediateverificationoftheavai1abilityandintegrityoftheremainingsources,(b)reevaluationof theavailabilityoftheremainingdiesel-generator(s)attimeintervalsnottoexceedeighthours."ACpowersurveillancerequirementswhencontinueooperationisal-lowedwithlessthanLCOACpowersourcesavailablearecontainedinthe"StandardTechnicalSpecificationsforCombustionEngineeringPres-surizedWaterReactors,"NUREG-0212,ActionStatements"a"and"b",TechnicalSpecification3.8.1.1.TheserequirementsareinagreementwithRegulatoryGuide1.93.3.0DISCUSSIONThepresentapprovedSt.LucieUnit1TechnicalSpecification3.8.1.1,"OperabilityofACPowerSources,"ActionStatements"a"and"b",areidenticaltothe"StandardTechnicalSpecificationsforCombustionEngineeringPressurizedWaterReactors,"NUREG-0212.ThesurveillancerequirementsagreewiththestaffpositionstipulatedinRegulatoryGuide1.93.ActionStatements"a"and"b"requireverificationoftheavail-abilityandintegrityoftheremainingACpowersourceswithinonehourandonceeveryeighthoursthereafter,ifpoweroperationiscontinuedwithlessthanLCOrequiredACpowersourcesavailable.FPLhasrequestedtheeliminationoftheeight-hoursurveillancerequirement.AreviewwasmadeoftheSt.LucieUnit1docketedinformationfora12-monthperiodfromMay15,1977toMay15,1978.DuringthisperiodtherewerenooccurrenceswhenthelossofaLCOpowersourceandcontinuedpoweroperationrequiredtheeight-hoursurveillanceoftheremainingsources.4.0RECOMMENDATIONSrTheremovaloftheeight-hoursurveillanceofACpowersourcesduringoperationwhenLCOrequirementsarenotmetisnotinagreementwithRegulatoryGuide1.93andtheStandardTechnicalSpecifications.

gfyeThepresentrequirementspresentnohardshiponthelicenseesincetherequiredconditionsareveryinfrequent.Theremovaloftherequire-mentswillnote~~vHacr<<Gas)1+~(vprli~~-0~sa<<>Ca~~~C1<<4>~~cg~ssIC4IVlC>IlisrecommendedthattherequestedTechnicalSpecificationchangesbedenied.5.0REFERENCES1.FPLletter(R.E.Uhrig)toNRC(V.Stello)datedSeptem-ber8,1978.TtJtlkh<<1(<<4j44hh~~~~~4<<y~~II<<<<4<<pClvIII'4CIIVII4~0~<<~JyPL44IVflJiaiamcflcs"a'"dflG"0't.LucieUnit1.3.TechnicalSpecification3.8.].1,ActionStatements"a"and"b","StandardTechnicalSpecificationsforCombustionEngineeringPressurizedWaterReactors,"March15,1977,NUREG-0212.4.RegulatoryGuide1.93,"AvailabilityofElectricPowerSources."5.Section50.36(c)(2),"LimitingConditionsforOperation,"of10CFRPart50,"LicensingofProductionandUtilizationFacilities.".3