ML14241A309

Grand Gulf Nuclear Station, Unit 1, Letter GNRO-2012/00146, Technical Requirements Manual and Technical Specification Bases Update (ML12361A330)

ML14241A309
Person / Time
Site:	Grand Gulf
Issue date:	08/29/2014
From:	Mulligan K J Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2014/00058
Download: ML14241A309 (80)

Text

GNRO-2014/00058 August29,2014U.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, DC20555-0001 EntergyOperations, Inc.P.O.Box756PortGibson,MS39150KevinMulliganSiteVicePresident GrandGulfNuclearStationTel.(601)437-7500

REFERENCE:

Technical Specification BasesGrandGulfNuclearStation,Unit1DocketNo.50-416LicenseNo.NPF-29EntergyLetterGNRO-2012/00146, Technical Requirements ManualandTechnical Specification BasesUpdate(ML12361A330)

DearSirorMadam:

Pursuantto10CFR50.71(e),EntergyOperations Inc.herbysubmitsanupdateofallchangesmadetotheGrandGulfNuclearStationTechnical Specification Basessincethelastsubmittal (GNRO-2012/00146, datedDecember21,2012).

Thislettercontainsnonewcommitments.

Ifyouhaveanyquestions orrequireadditional information, pleasecontactJamesNadeauat601-437-2103.

Ideclareunderpenaltyofperjurythattheforegoing istrueandcor-recl.

Executedonthe29thdayofAugust2014.Sincerely, KJM/ramAttachment(s):

1.Technical Specification BasesChangeSummary2.Technical Specification BasesChanges GNRO-2014/00058 Page2of2cc:withoutAttachment(s)

U.S.NuclearRegulatory Commission ATTN:Mr.A.Wang,NRR/DORLMailStopOWFN/8G1411555Rockville PikeRockville, MD20852-2378 U.S.NuclearRegulatory Commission AnN:Mr.Nathaniel FerrerNRR/DLRMailStopOWFNI11F111555Rockville PikeRockville, MD20852-2378 (NRCSeniorResidentInspector GrandGulfNuclearStationPortGibson,MS39150 Attachment 1GNRO-2014/00058 Technical Specification BasesChangeSummary Attachment 1ofGNRO-2014-00058 LBDCRTopicofChangeAffectedTechnicalSpecificationBases NumberPages12052Revisionoftechnical specification 83.3-6a(TS)basespagetocorrecttypographical error(Amendment 188).13004TRMtocorrecttypographical errors83.1-41,83.1-43intechnical requirements manual(TRM)andTSbases.13029RevisionofTSbasestoaddress83.0-9a,83.0-9bnon-seismic snubbers.

13043Implementation ofTSAmendment 83.1-43,83.1-49,83.3-26,83.3-27a, 197for24monthfuelcycle.83.3-28,83.3-29a, 83.3-38,83.3-47,83.3-60,83.3-66,83.3-75,83.3-76,83.3-86,83.3-123,83.3-135,83.3-169,83.3-170,83.3-170a,83.3-182,83.3-183, 83.3-194, 83.3-207, 83.3-213, 83.3-217,83.3-231,83.3-237, 83.3-238, 83.4-11,83.4-12,83.4-20,83.4-37, 83.5-11,83.5-12,83.5-14,83.5-25,83.5-26,83.6-13,83.6-25,83.6-35,83.6-39,83.6-40,83.6-46,83.6-47,83.6-65, 83.6-76,83.6-82,83.6-87a, 83.6-94,83.6-95,83.6-101,83.6-119,83.6-130, 83.7-7,83.7-10, 83.7-16a, 83.7-21,83.8-18,83.8-18a, 83.8-20,83.8-22,83.8-23,83.8-24,83.8-25a, 83.8-27,83.8-28,83.8-30,83.8-30a, 83.8-31,83.8-56a, 83.8-57,83.8-58 Attachment 2GNRO-2014/00058 Technical Specification BasesChanges BASES(continued)

LCOApplicability B3.0LCO3.0.8LCO3.0.8establishes conditions underwhichsystemsareconsidered toremaincapableofperforming theirintendedsafetyfunctionwhenassociated snubbersarenotcapableofproviding theirassociated supportfunction(s).

ThisLCOstatesthatthesupported systemisnotconsidered tobeinoperable solelyduetooneormoresnubbersnotcapableofperforming theirassociated supportfunction(s).

Thisisappropriate becausealimitedlengthoftimeisallowedformaintenance, testing,orrepairofoneormoresnubbersnotcapableofperforming theirassociated supportfunction(s) andappropriate compensatory measuresarespecified inthesnubberrequirements, whicharelocatedoutsideoftheTechnical Specifications (TS)underlicenseecontrol.Thesnubberrequirements donotmeetthecriteriain10CFR50.36(c),(2)(ii),and,assuch,areappropriate forcontrolbythelicensee.

Iftheallowedtimeexpiresandthesnubber(s) areunabletoperformtheirassociated supportfunction(s),

theaffectedsupported system'sLCO(s)mustbedeclarednotmetandtheConditions andRequiredActionsenteredinaccordance withLCO3.0.2.LCO3.0.8.aapplieswhenoneormoresnubbersarenotcapableofproviding theirassociated supportfunction(s) toasingletrainorsubsystem ofamultipletrainorsubsystem supported systemortoasingletrainorsubsystem supported system.LCO3.0.8.aallows72hourstorestorethesnubber(s) beforedeclaring thesupported systeminoperable.

The72hourCompletion Timeisreasonable basedonthelowprobability ofaseismiceventconcurrent withaneventthatwouldrequireoperation ofthesupported systemoccurring whilethesnubber(s) arenotcapableofperforming theirassociated supportfunctionandduetotheavailability oftheredundant trainofthesupported system.LCO3.0.8.bapplieswhenoneormoresnubbersarenotcapableofproviding theirassociated function(s) tomorethanonetrainorsubsystem ofamultipletrainorsubsystem supported system.LCO3.0.8.ballows12hourstorestorethesnubber(s) beforedeclaring thesupported systeminoperable.

The12hourCompletion Timeisreasonable basedonthelowprobability ofaseismiceventconcurrent withan(continued)

GRANDGULFB3.0-9aLBDCR13029 BASESLCO3.0.8(continued)

LCOApplicability B3.0eventthatwouldrequireoperation ofthesupported systemoccurring whilethesnubber(s) arenotcapableofperforming theirassociated supportfunction.

LCO3.0.8requiresthatriskbeassessedandmanaged.IndustryandNRCguidanceontheimplementation of10CFRSO.6S(a)(4)(theMaintenance Rule)doesnotaddressseismicrisk.However,useofLCO3.0.8shouldbeconsidered withrespecttootherplantmaintenance activities, andintegrated intotheexistingMaintenance Ruleprocesstotheextentpossiblesothatmaintenance onanyunaffected trainorsubsystem isproperlycontrolled, andemergentissuesareproperlyaddressed.

Theriskassessment neednotbequantified, butaqualitative awareness ofthevulnerability ofsystemsandcomponents whenoneormoresnubbersarenotabletoperformtheirassociated supportfunction.

LCO3.0.8doesnotapplytonon-seismic snubbers.

Theprovisions ofLCO3.0.8arenottobeappliedtosupported TSsystemsunlessthesupported systemswouldremaincapableofperforming theirrequiredsafetyorsupportfunctions forpostulated designloadsotherthanseismicloads.Theriskimpactofdynamicloadingsotherthanseismicloadswasnotassessedaspartofthedevelopment ofLCO3.0.8.Theseshock-type loadsincludethrustloads,blowdownloads,water-hammer loads,steam-hammer loads,LOCAloadsandpiperuptureloads.However,therearesomeimportant distinctions betweennon-seismic (shock-type) loadsandseismicloadswhichindicatethat,ingeneral,theriskimpactoftheout-of-service snubbersissmallerforseismicloadsthanforseismicloads.First,whileaseismicloadaffectstheentireplant,theimpactofaseismicloadislocalized toacertainsystemorareaoftheplant.Second,althoughnon-seismic shockloadsmaybehigherintotalforceandtheimpactcouldbeasmuchormorethanseismicloads,generally theyareofmuchshorterdurationthanseismicloads.Third,theimpactofseismicloadsismoreplantspecific, andthushardertoanalyzegenerically, thanforseismicloads.Forthesereasons,everytimeLCO3.0.8isapplied,atleastonetrainofeachsystemthatissupported bytheinoperable snubber(s) shouldremaincapableofperforming theirrequiredsafetyorsupportfunctions forpostulated designloadsotherthanseismicloads.GRANDGULFB3.0-9bLBDCR13029 BASESSURVEILLANCE REQUIREMENTS SLCSystemB3.1.7SR3.1.7.3andSR3.1.7.5Therequirements of10CFR50.62aremetbytheuseofasodiumpentaborate solutionenrichedintheboron-10(B-10)isotope.SR3.1.7.3determines whetherthesodiumpentaborate concentration, inconjunction withtheboronenrichment, iswithinlimitstomeettherequirements of10CFR50.62.SR3.1.7.5ensuresthattheparameters usedinthedetermination ofsodiumpentaborate concentration arewithinlimits.Theavailable solutionvolumeisthesolutionvolumeabovethepumpsuctionpenetration.

Thissurveillance requiresanexamination ofthesodiumpentaborate solutionbyusingchemicalanalysistoensuretheproperweightof10existsinthestoragetank.SR3.1.7.5mustbeperformed anytimeboronorwaterisaddedtothestoragetanksolutiontoestablish thattheweightof8-10iswithinthespecified limits.ThisSRmustbeperformed anytimethesolutiontemperature isrestoredto45'F,toensurenosignificant boronprecipitation occurred.

The31dayFrequency ofthesesurveillances isappropriate becauseoftherelatively slowvariation ofboronconcentration betweensurveillances.

SR3.1.7.4andSR3.1.7.6SR3.1.7.4verifiesthecontinuity oftheexplosive chargesintheinjection valvestoensureproperoperation willoccurifrequired.

(continued)

GRANDGULFB3.1-41LBDCR13004 SLCSystemB3.1.7BASESSURVEILLANCE REQUIREMENTS (continued)

SR3.1.7.7Demonstrating eachSLCSystempumpdevelopsaflowrate41.2gpmatadischarge pressure1340psigwithoutactuating thepump'sreliefvalveensuresthatpumpperformance hasnotdegradedduringthefuelcycle.Thisminimumpumpflowraterequirement ensuresthat,whencombinedwiththesodiumpentaborate solutionconcentration requirements, therateofnegativereactivity insertion fromtheSLCSystemwilladequately compensate forthepositivereactivity effectsencountered duringpowerreduction, cooldownofthemoderator, andxenondecay.Thistestconfirmsonepointonthepumpdesigncurve,andisindicative ofoverallperformance.

Suchinservice inspections confirmcomponent OPERABILITY, trendperformance, anddetectincipient failuresbyindicating abnormalperformance.

TheFrequency ofthisSurveillance isinaccordance withtheInservice TestingProgram.ThisSurveillance ensuresthatthereisafunctioning flowpathfromtheboronsolutionstoragetanktotheRPV,including thefiringofanexplosive valve.Thereplacement chargefortheexplosive valveshallbefromthesame thathasbeencertified byhavingoneofthatbatchsuccessfully fired.Otheradministrative

controls, suchasthosethatlimittheshelflifeoftheexplosive charges,mustbefollowed.

Thepumpandexplosive valvetestedshouldbealternated suchthatbothcompleteflowpathsaretestedevery48months,atalternating 24monthintervals.

TheSurveillance maybeperformed inseparatestepstopreventinjecting boronintotheRPV.Anacceptable method-for--veri-fying---flow-ffom*thepUmp-tothe-RPVis-*-to pump___...__._._.._------------.-----

-.--.------.--.----.---

-.------**-aenffner-aTfzea-wa ter-fromatesttankthroughoneSLCsubsystem andintotheRPV.The24monthFrequency isbasedIontheneedtoperformthisSurveillance unqertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance testwhenperformed atthe24monthFrequency; therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

(continued)

GRANDGULFB3.1-43LBDCR13043 BASESSURVEILLANCE REQUIREMENTS SDVVentandDrainValvesB3.1.8SR3.1.8.3(continued) resetsignal,theopeningoftheSDVventanddrainvalvesisverified.

TheLOGICSYSTEMFUNCTIONAL TESTinLCO3.3.1.1andthescramtimetestingofcontrolrodsinLCO3.1.3,"ControlRodOPERABILITY,"

overlapthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency; therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section4.6.1.1.2.4.2.6.

2.10CFR50.67,AAccident SourceTerms.@3.NUREG-0803, "GenericSafetyEvaluation ReportRegarding Integrity ofBWRScramSystemPiping,"August1981.GRANDGULFB3.1-49LBDCR13043 BASESAPPLICABLE SAFETYANALYSES, LCO,andAPPLICABILITY (continued)

RPSInstrumentation B3.3.1.1TheAPRMsubsystem isdividedintofourAPRMjOPRM channelsandfour2-0ut-Of-4 Voterchannels.

EachAPRMjOPRM channelprovidesinputstoeachofthefourvoterchannels.

Thefourvoterchannelsaredividedintotwogroupsoftwoeach,witheachgroupoftwoproviding inputstooneRPStripsystem.ThesystemisdesignedtoallowoneAPRMjOPRM channel,butnovoterchannels, tobebypassed.

Atripfromanyoneun-bypassed APRMjOPRM channelwillresultina"half-trip" inallfourofthevoterchannels, butnotripinputstoeitherRPStripsystem.SinceAPRMFunctions 2.a,2.b,2.d,and2.fareimplemented inthesamehardware, thesefunctions arecombinedwithAPRMInopFunction2.c.AnyFunction2.a,2.b,2.c,or2.dtripfromanytwobypassedAPRMjOPRM channelswillresultinafulltripineachofthefour2-0ut-Of-4 Voterchannels, whichinturnresultsintwotripinputstoeachRPStripsystemlogicchannel(AI,A2,B1,andB2).Similarly, anyFunction2.cor2.ftripfromanytwoun-bypassed APRMjOPRM channelswillresultinafulltripfromeachVoterchannel.ThreeofthefourAPRMjOPRM channelsandallfourofthevoterchannelsarerequiredtobeOPERABLEtoensurethatnosinglefailurewillprecludeascramonavalidsignal.Inaddition, toprovideadequatecoverageoftheentirecore,consistent withthedesignbasesforAPRMFunctions 2.a,2.b,and2.d,atleast20LPRMinputs,withatleastthreeLPRMinputsfromeachofthefouraxiallevelsatwhichtheLPRMsarelocated,mustbeoperableforeachAPRMjOPRM channel.FortheOPRMUpscale,Function2.f,LPRMsareassignedto"cells"offourdetectors.

Aminimumof30cells,eachwithaminimumoftwoLPRMs,mustbeOPERABLEfortheOPRMUpscaleFunction2.ftobeOPERABLE.

(continued)

GRANDGULFB3.3-6aLBDCR12052 BASESSURVEILLANCE REQUIREMENTS (continued)

RPSInstrumentation B3.3.1.1SR3.3.1.1.7 LPRMgainsettingsaredetermined fromtheCorepowerdistribution calculated bytheCorePerformance Monitoring systembasedonthelocalfluxprofilesmeasuredbytheTraversing IncoreProbe(TIP)System.Thisestablishes therelativelocalfluxprofileforappropriate representative inputtotheAPRMSystem.The2000MWD/T(megawatt days/ton)

Frequency isbasedonoperating experience withLPRMsensitivity changes.Forthepurposeofcalculating thissurveillance frequency, the*ton(T)unitofweightisexpressed intermsofmetrictonsofuraniumfuelresidinginthereactorcore.SR3.3.1.1.8 andSR3.3.1.1.11 ACHANNELFUNCTIONAL TESTisperformed oneachrequiredchanneltoensurethattheentirechannelwillperformtheintendedfunction.

Anysetpointadjustment shallbeconsistent withtheassumptions ofthecurrentplantspecificsetpointmethodology.

The92dayFrequency ofSR3.3.1.1.8 isbasedonthereliability analysisofReference 9.The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

(continued)

GRANDGULFB3.3-26LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RPSInstrumentation B3.3.1.1SR3.3.1.1.10.

SR3.3.1.1.12 andSR3.3.1.1.17 (continued)

Note3toSR3.3.1.1.10 statesthattheAPRMrecirculation flowtransmitters areexcludedfromCHANNELCALIBRATION ofFunction2.d,AveragePowerRangeMonitorFlowBiasedSimulated ThermalPower-High.Calibration oftheflowtransmitters isperformed onan18-monthfrequency (SR3.3.1.1.17).

SR3.3.1.1.10 forthedesignated functionismodifiedbytwonotesidentified inTable3.3.1.1-1.

Thefirstnoterequiresevaluation ofchannelperformance forthecondition wheretheas-foundsettingforthechannelsetpointisoutsideitsas-foundtolerance butconservative withrespecttotheAllowable Value.Evaluating channelperformance willverifythatthechannelwillcontinuetobehaveinaccordance withsafetyanalysisassumptions andthechannelperformance assumptions inthesetpointmethodology.

Thepurposeoftheassessment istoensureconfidence inchannelperformance priortoreturning thechanneltoservice.Performance ofthesechannelswillbeevaluated undertheCorrective ActionProgram.EntryintotheCorrective ActionProgramensuresrequiredreviewanddocumentation ofthecondition toestablish areasonable expectation forcontinued OPERABILITY.

Thesecondnoterequiresthattheas-leftsettingforthechannelbewithintheas-lefttolerance oftheNominalTripSetpoint(NTSP).Whereasetpointmoreconservative thantheNTSPissuedintheplantsurveillance procedures, theleftandas-foundtolerances, asapplicable, willbeappliedtothesurveillance procedure setpoint.

Thiswillensurethatsufficient margintotheSafetyLimitand/orAnalytical Limitismaintained.

Iftheas-leftchannelsettingcannotbereturnedtoasettingwithintheas-lefttolerance oftheNSP,thenthechannelshallbedeclaredinoperable.

ThesecondnotealsorequirestheNTSPandthemethodologies forcalculating theas-leftandtheas-foundtolerances tobeintheTechnical Requirements ManualTheFrequency of24monthsforSR3.3.1.1.12 andSR3.3.1.1.17 isbasedupontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

(continued)

GRANDGULFB3.3-27aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

RPSInstrumentation B3.3.1.1SR3.3.1.1.13 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredtriplogicforaspecificchannel.Thefunctional testingofcontrolrods,inLCO3.1.3,"ControlRodOPERABILITY,"

andSDVventanddrainvalves,inLCO3.1.8,"ScramDischarge Volume(SDV)VentandDrainValves,"overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

SR3.3.1.1.14 ThisSRensuresthatscramsinitiated fromtheTurbineStopValveClosure,TripOilPressure-LowandTurbineControlValveFastClosure,TripOilPressurec LowFunctions willnotbeinadvertently bypassedwhenTHERMALPOWERis35.4%RTP.Thisinvolvescalibration ofthebypasschannels.

Adequatemarginsfortheinstrument setpointmethodology areincorporated intotheactualsetpoint.

Becausemainturbinebypassflowcanaffectthissetpointnonconservatively (THERMALPOWERisderivedfromturbinefirststagepressure),

themainturbinebypassvalvesmustremainclosedatTHERMALPOWER35.4%RTPtoensurethatthecalibration remainsvalid.Ifanybypasschannelsetpointisnonconservative (i.e.,theFunctions arebypassedat35.4%RTP,eitherduetoopenmainturbinebypassvalve(s)orotherreasons),

thentheaffectedTurbineStopValve,TripOilPressure-Low andTurbineControlValveFastClosure,TripOilPressure-Low Functions areconsidered inoperable.

Alternatively, thebypasschannelcanbeplacedintheconservative condition (nonbypass).

Ifplacedinthenonbypass condition, thisSRismetandthechannelisconsidered OPERABLE.

TheFrequency of24monthsisbasedonengineering judgmentandreliability ofthecomponents.

(continued)

GRANDGULFB3.3-28LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RPSInstrumentation B3.3.1.1SR3.3.1.1.15 (continued)

RPSRESPONSETIMEtestsareconducted onan18monthSTAGGERED TESTBASIS.Note3requiresSTAGGERED TESTBASISFrequency tobedetermined basedon4channelspertripsystem,inlieuofthe8channelsspecified inTable3.3.1.1-1 fortheMSIVClosureFunction.

ThisFrequency isbasedonthelogicinterrelationships ofthevariouschannelsrequiredtoproduceanRPSscramsignal.Therefore, staggered testingresultsinresponsetimeverification ofthesedevicesevery24months.ThisFrequency isconsistent withthetypicalindustryrefueling cycleandisbaseduponplantoperating experience, whichshowsthatrandomfailuresofinstrumentation components causingserioustimedegradation, butnotchannelfailure,areinfrequent.

SR3.3.1.L.16 andSR3.3.1.1.18 Deleted(continued)

GRANDGULFB3.3-29aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS SRMInstrumentation B3.3.1.2SR3.3.1.2.5 (continued)

TheNotetotheSurveillance allowstheSurveillance tobedelayeduntilentryintothespecified condition oftheApplicability.

TheSRmustbeperformed inMODE2within12hoursofenteringMODE2withIRMsonRange2orbelow.Theallowance toentertheApplicability withthe31dayFrequency notmetisreasonable, basedonthelimitedtimeof12hoursallowedafterenteringtheApplicability andtheinability toperformtheSurveillance whileathigherpowerlevels.AlthoughtheSurveillance couldbeperformed whileonIRMRange3,theplantwouldnotbeexpectedtomaintainsteadystateoperation atthispowerlevel.Inthisevent,the12hourFrequency isreasonable, basedontheSRMsbeingotherwise verifiedtobeOPERABLE(i.e.,satisfactorily performing theCHANNELCHECK)andthetimerequiredtoperformtheSurveillances.

SR3.3.1.2.6 Performance ofaCHANNELCALIBRATION verifiestheperformance oftheSRMdetectors andassociated circuitry.

TheFrequency considers theplantconditions requiredtoperformthetest,theeaseofperforming thetest,andthelikelihood ofachangeinthesystemorcomponent status.Theneutrondetectors areexcludedfromtheCHANNELCALIBRATION becausetheycannotreadilybeadjusted.

Thedetectors arefissionchambersthataredesignedtohavearelatively constantsensitivity overtherange,andwithanaccuracyspecified forafixedusefullife.TheNotetotheSurveillance allowstheSurveillance tobedelayeduntilentryintothespecified condition oftheApplicability.

TheSRmustbeperformed inMODE2within12hoursofenteringMODE2withIRMsonRange2orbelow.Theallowance toentertheApplicability withthe24monthFrequency notmetisreasonable, basedonthelimitedtime'of12hoursallowedafterenteringtheApplicability andtheinability toperformtheSurveillance whileathigherpowerlevels.AlthoughtheSurveillance couldbeperformed whileonIRMRange3,theplantwouldnotbeexpectedtomaintainsteadystateoperation atthispowerlevel.Inthisevent,the12hourFrequency isreasonable, basedontheSRMsbeing(continued)

GRANDGULFB3.3-38LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ControlRodBlockInstrumentation B3.3.2.1SR3.3.2.1.6 (continued) inthenonbypassed condition, theSRismetandtheRWLwouldnotbeconsidered inoperable.

Because"mainturbinebypasssteamflowcanaffecttheHPSPnonconservatively fortheRWL,theRWLisconsidered inoperable withanymainturbinebypassvalveopen.TheFrequency of92daysisbasedonthesetpointmethodology utilizedforthesechannels.

SR3.3.2.1.7 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthatthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

Anysetpointadjustment shallbeconsistent withtheassumptions ofthecurrentplantspecificsetpointmethodology.

TheFrequency isbasedupontheassumption ofthemagnitude ofequipment driftinthesetpoint analysis.

SR3.3.2.1.8 TheCHANNELFUNCTIONAL TESTfortheReactorModeSwitchcShutdownPositionFunctionisperformed byattempting towithdrawanycontrolrodwiththereactormodeswitchintheshutdownpositionandverifying acontrolrodblockoccurs.AsnotedintheSR,theSurveillance isnotrequiredtobeperformed until1hourafterthereactormodeswitchisintheshutdownposition, sincetestingofthisinterlock withthereactormodeswitchinanyotherpositioncannotbeperformed withoutusingjumpers,liftedleads,ormovablelimits.ThisallowsentryintoMODES3and4ifthe24monthFrequency isnotmetperSR3.0.2.The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe18monthFrequency.

(continued)

GRANDGULFB3.3-47LBDCR13043 BASESSURVEILLANCE REQUIREMENTS PAMInstrumentation B3.3.3.1SR3.3.3.1.1 (continued)

Agreement criteriaaredetermined bytheplantstaffbasedonacombination ofthechannelinstrument uncertainties, including isolation, indication, andreadability.

Ifachannelisoutsidethecriteria, itmaybeanindication thatthesensororthe processing equipment hasdriftedoutsideitslimit.TheFrequency of31daysisbaseduponplantoperating experience withregardtochannelOPERABILITY anddrift,whichdemonstrates thatfailureofmorethanonechannelofagivenfunctioninany31dayintervalisrare.TheCHANNELCHECKsupplements lessformal,butmorefrequent, checksofchannelsduringnormaloperational useofthosedisplaysassociated withtherequiredchannelsofthisLCO.SR3.3.3.1.2 DeletedSR3.3.3.1.3 ForallFunctions aCHANNELCALIBRATION isperformed every24months,orapproximately ateveryrefueling.

CHANNELCALIBRATION isacompletecheckoftheinstrument loopincluding thesensor.Thetestverifiesthatthechannelrespondstothemeasuredparameter withthenecessary rangeandaccuracy.

TheFrequency isbasedonoperating experience andconsistency withthetypicalindustryrefueling cycles.ForFunctions 12and13theCHANNELCALIBRATION consistsofanelectronic calibration ofthechannel,notincluding thedetector, forrangedecadesabove10R/hrandaonepointcalibration checkofthedetectorbelow10R/hrwithaninstalled orportablegammasource.Theneutrondetectors areexcludedfromtheCHANNELCALIBRATION becausetheycannotreadilybeadjusted.

Thedetectors arefission(continued)

GRANDGULFB3.3-60LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RemoteShutdownSystemB3.3.3.2SR3.3.3.2.1 (continued)

TheFrequency isbaseduponplantoperating experience thatdemonstrates channelfailure;srare.SR3.3.3.2.2 SR3.3.3.2.2 verifieseachrequiredRemoteShutdownSystemtransferswitchandcontrolcircuit'performs theintendedfunction.

Thisverification isperformed fromtheremoteshutdownpanelandlocally,asappropriate.

Operation oftheequipment fromtheremoteshutdownpanelisnotnecessary.

TheSurveillance canbesatisfied byperformance ofacontinuity check.Thiswillensurethatifthecontrolroombecomesinaccessible, theplantcanbeplacedandmaintained inMODE3fromtheremoteshutdownpanelandthelocalcontrolstations.

However,thisSurveillance isnotrequiredtobeperformed onlyduringaplantoutage.Operating experience demonstrates thatRemoteShutdownSystemcontrolchannelsusuallypasstheSurveillance whenperformed atthe24monthFrequency.

SR3.3.3.2.3 CHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thetestverifiesthechannelrespondstomeasuredparameter valueswiththenecessary rangeandaccuracy.

The24monthFrequency isbaseduponoperating experience andisconsistent withthetypicalindustryrefueling cycle.REFERENCES GRANDGULF1.10CFR50,AppendixA,GDC19.B3.3-66LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

EOC-RPTInstrumentation B3.3.4.1SR3.3.4.1.4 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredtriplogicforaspecificchannel.Thesystemfunctional testofthepumpbreakersisincludedasapartofthistest,overlapping theLOGICSYSTEMFUNCTIONAL TEST,toprovidecompletetestingoftheassociated safetyfunction.

Therefore, ifabreakerisincapable ofoperating, theassociated instrument channelwouldalsobeinoperable.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance testwhenperformed atthe24monthFrequency.

SR3.3.4.1.5 ThisSRensuresthatanEOC-RPTinitiated fromtheTSVClosure,TripOilPressure-Low andTCVFastClosure,TripOilPressurecLow Functions willnotbeinadvertently bypassedwhenTHERMALPOWERis35.4%RTP.Thisinvolvescalibration ofthebypasschannels.

Adequatemarginsfortheinstrument setpointmethodologies areincorporated intotheactualsetpoint.

Becausemainturbinebypassflowcanaffectthissetpointnonconservat;vely (THERMALPOWERisderivedfromfirststagepressure),

themainturbinebypassvalvesmustremainclosedatTHERMALPOWER35.4%RTPtoensurethatthecalibration remainsvalid.Ifanybypasschannel's setpointisnonconservative (i.e.,theFunctions arebypassedat35.4%RTPeitherduetoopenmainturbinebypassvalvesorotherreasons),

theaffectedTSVClosure,TripOilPressurecLow andTCVFastClosure,TripOilPressure-Low Functions areconsidered inoperable.

Alternatively, thebypasschannelcanbeplacedintheconservative condition (nonbypass).

Ifplacedinthenonbypass condition, thisSRismetandthechannelconsidered OPERABLE.

TheFrequency of24monthshasshownthatchannelbypassfailuresbetweensuccessive testsarerare.(continued)

GRANDGULFB3.3-75LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

EOC-RPTInstrumentation B3.3.4.1SR3.3.4.1.6 ThisSRensuresthattheindividual channelresponsetimesarelessthanorequaltothemaximumvaluesassumedintheaccidentanalysis.

TheEOC-RPTSYSTEMRESPONSETIMEacceptance criteriaareincludedintheapplicable plantprocedures.

ANotetotheSurveillance statesthatbreakerinterruption timemaybeassumedfromthemostrecentperformance ofSR3.3.4.1.7.

Thisisallowedsincethetimetoopenthecontactsafterenergization ofthetripcoilandthearcsuppression timeareshortanddonotappreciably change,duetothedesignofthebreakeropeningdeviceandthefactthatthebreakerisnotroutinely cycled.EOC-RPTSYSTEMRESPONSETIMEtestsareconducted onan24monthSTAGGERED TESTBASIS.Eachtestincludestwoturbinecontrolvalvechannelsfromonetripsystemandtwoturbinestopvalvechannelsfromtheothertripsystem.Responsetimescannotbedetermined atpowerbecauseoperation offinalactuateddevicesisrequired.

Therefore, thisFrequency isconsistent withthetypicalindustryrefueling cycleandisbaseduponplantoperating experience, whichshowsthatrandomfailuresofinstrumentation components thatcauseseriousresponsetimedegradation, butnotchannelfailure,areinfrequent occurrences.

SR3.3.4.1.7 ThisSRensuresthattheRPTbreakerinterruption timeisprovidedtotheEOC-RPTSYSTEMRESPONSETIMEtest.BreakerInterruption timeisdefinedasBreakerResponsetimeplusArcSuppression time.BreakerResponseisthetimefromapplication ofvoltagetothetripcoiluntilthemaincontactsseparate.

ArcSuppression isthetimefrommaincontactseparation untilthecompletesuppression oftheelectrical arcacrosstheopencontacts.

BreakerResponseshallbeverifiedbytestingandaddedtothemanufacturer's designArcSuppression timeof12mstodetermine BreakerInterruption time.Thebreakerarcsuppression timeshallbevalidated bytheperformance ofperiodiccontactgap(continued)

GRANDGULFB3.3-76LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

ATWS-RPTInstrumentation B3.3.4.2SR3.3.4.2.4 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthatthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency isbasedupontheassumption ofthemagnitude ofequipment driftinthesetpo;ntanalysis.

SR3.3.4.2.5 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredtriplogicforaspecificchannel.Thesystemfunctional testofthepumpbreakers, includedaspartofthisSurveillance, overlapstheLOGICSYSTEMFUNCTIONAL TESTtoprovidecompletetestingoftheassumedsafetyfunction.

Therefore, ifabreakerisincapable ofoperating, theassociated instrument channel(s) wouldbeinoperable.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe18monthFrequency.

REFERENCES 1.UFSAR,Section5.4.1.7.10.

2.NEDE-770-06-1, "BasesForChangesToSurveillance TestIntervals andAllowedOut-of-Service TimesForSelectedInstrumentation Technical Specifications,"

February1991.GRANDGULFB3.3-86LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

ECCSInstrumentation B3.3.5.1SR3.3.5.1.6 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredinitiation logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.5.1,LCO3.5.2,LCO3.8.1,andLCO3.8.2overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutage(exceptforDivisionIIIwhichcanbetestedinanyoperational condition) andthepotential forunplanned transients iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

REFERENCES 1.UFSAR,Section5.2.2.UFSAR,Section6.3.3.UFSAR,Chapter15.4.NEDC-30936-P-A, "BWROwners'GroupTechnical Specification Improvement AnalysesforECCSActuation Instrumentation, Part2,"December1988.5.Regulatory Guide1.105,"Setpoints forSafety-Related Instrumentation,"

Revision3.GRANDGULFB3.3-123LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

REFERENCES RCICSystemInstrumentation B3.3.5.2SR3.3.5.2.5 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredinitiation logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.5.3overlapsthisSurveillance toprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

1.NEDE-770-06-2, "Addendum toBasesforChangesto'Surveillance TestIntervals andAllowedOut-of-Service TimesforSelectedInstrumentation Technical Specifications,"

February1991.2.Regulatory Guide1.105,USetpoints forSafety-Related Instrumentation,"

Revision3.GRANDGULFB3.3-135LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)PrimaryContainment andDrywellIsolation Instrumentation B3.3.6.1SR3.3.6.1.2 ACHANNELFUNCTIONAL TESTisperformed oneachrequiredchanneltoensurethattheentirechannelwillperformtheintendedfunction.

Anysetpointadjustment shallbeconsistent withtheassumptions ofthecurrentplantspecificsetpointmethodology.

TheFrequency isbasedonreliability analysisdescribed inReferences 5and6.SR3.3.6.1.3 Thecalibration oftripunitsconsistsofatesttoprovideacheckoftheactualtripsetpoints.

Thechannelmustbedeclaredinoperable ifthetripsettingisdiscovered tobelessconservative thantheAllowable Valuespecified inTable3.3.6.1-1.

ForFunctionl.c,MainSteamLineFlowHigh,thereisaplantspecificprogramwhichverifiesthattheinstrument channelfunctions asrequiredbyverifying theas-leftandas-foundsettingsareconsistent withthoseestablished bythesetpointmethodology.

Ifthetrip_settingisdiscovered tobelessconservative thanaccounted forintheappropriate setpointmethodology, butisnotbeyondtheAllowable Value,thechannelperformance isstillwithintherequirements oftheplantsafetyanalysis.

Undertheseconditions, thesetpointmustbereadjusted tobeequaltoormoreconservative thanaccounted forintheappropriate setpointmethodology.

TheFrequency of92daysisbasedonthereliability analysisofReferences 5and6.SR3.3.6.1.4.

SR3.3.6.1.5.

andSR3.3.6.1.7 CHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountfor driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency ofSR3.3.6.1.4, SR3.3.6.1.5, andSR3.3.6.1.7 isbasedontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

(continued)

GRANDGULFB3.3-169LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

PrimaryContainment andDrywellIsolation Instrumentation B3.3.6.1SR3.3.6.1.6 andSR3.3.6.1.8 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredisolation logicforaspecificchannel.Thesystemfunctional testingperformed onisolation valvesinLCO3.6.1.3andLCO3.6.5.3overlapstheseSurveillances toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency forSR3.3.6.1.8 isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.The18monthFrequency forSR3.3.6.1.6 isbasedonthecurrentfrequency forperforming thisSurveillance.

Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthelistedmonthFrequency.

SR3.3.6.1.8 ThisSRensuresthattheindividual channelresponsetimesarelessthanorequaltothemaximumvaluesassumedintheaccidentanalysis.

Testing;s performed onlyonchannelswheretheassumedresponsetimedoesnotcorrespond tothedieselgenerator (DG)starttime.ForchannelsassumedtorespondwithintheDGstarttime.sufficient marginexistsinthe10secondstarttimewhencomparedtothetypicalchannelresponsetime(milliseconds) soastoassureadequateresponsewithoutaspecificmeasurement test.TestingoftheclosuretimesoftheMSIVsisnotincludedinthisSurveillance sincetheclosuretimeoftheMSIVsistestedbySR3.6.1.3.6.

ISOLATION SYSTEMRESPONSETIMEacceptance criteriaforthisinstrumentation isincludedintheapplicable plantprocedures.

AsNoted,thechannelsensormaybeexcludedfromresponsetimetesting.Thisallowance tonotperformspecificresponsetimetestingofthesensorsisapplicable whenthealternate testingrequirements andrestrictions ofReference 7areperformed.

AsstatedinReference 7,analysishasdemonstrated thatotherTechnical Specification testingrequirements (CHANNELCALIBRATIONS, CHANNELCHECKS,CHANNELFUNCTIONAL TESTS.andLOGICSYSTEMFUNCTIONAL TESTS)andactionstakeninresponsetoNRCBulletin90-01Supplement 1aresufficient toidentifyfailuremodesordegradation in(continued)

GRANDGULFB3.3-170LBDCR13043 BASESSURVEILLANCE REQUIREMENTS PrimaryContainment andDrywellIsolation Instrumentation B3.3.6.1SR3.3.6.1:9 (continued) instrument responsetimesandassureoperation oftheanalyzedinstrument loopswithinacceptable limits.Reference 7alsoidentifies thattherearenoknownchannelsensorfailuremodesidentified thatcanbedetectedbyresponsetimetestingthatcannotalsobedetectedbyotherTechnical Specification requiredsurveillances.

Therefore, whentherequirements, including sensortypes,ofReference 7arecompliedwith,adequateassurance oftheresponsetimeofthesensorsisprovided.

Thisassurance oftheresponsetimeofthesensorswhencombinedwiththeresponsetimetestingoftheremainder ofthechannelensuresthattheindividual channelresponsetimesarelessthanorequaltothemaximumvaluesassumedintheaccidentanalysis.

Thecalibration shallbeperformed suchthatfastramporstepchangetosystemcomponents duringcalibrations isperformed toverifythattheresponseofthetransmitter totheinputchangeisprompt.Technicians shallmonitorforresponsetimedegradation duringtheperformance ofcalibrations.

Technicians shallbeappropriately trainedtoensuretheyareawareoftheconsequences ofinstrument responsetimedegradation.

Theseitemsarecommitments madeperReference 8.Ifthealternate testingrequirements ofReference 7arenotcompliedwiththentheentirechannelwillberesponsetimetestedincluding thesensors.ISOLATION SYSTEMRESPONSETIMEtestsforthisinstrumentation areconducted onan24monthSTAGGERED TESTBASIS.ThistestFrequency isconsistent withthetypicalindustryrefueling cycleandisbaseduponplantoperating experience thatshowsthatrandomfailuresofinstrumentation components causingseriousresponsetimedegradation, butnotchannelfailure,areinfrequent.

Analysishasshownthatwiththeuppercontainment poolcavityfloodedandthegatesremoved,adequatetimeexiststoallowoperatoractionnecessary toterminate theinventory losspriortoreachingreactorlevel3.Thisanalysistakescreditforthepoollevelbeinggreaterthanorequalto22feet8inchesabovethereactorvesselflange.Verifying theuppercontainment poollevelisgreaterthanorequalto22feet8inchesonafourhourfrequency providesassurance thattheoperators haveenoughtimetodetectandterminate adraindownevent.(continued)

GRANDGULFB3.3-170aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

Secondary Containment Isolation Instrumentation B3.3.6.2SR3.3.6.2.3 Calibration oftripunitsprovidesacheckoftheactualtripsetpoints.

Thechannelmustbedeclaredinoperable ifthetripsettingisdiscovered tobelessconservative thantheAllowable Valuespecified inTable3.3.6.2-1.

Ifthetripsettingisdiscovered tobelessconservative thanaccounted forintheappropriate setpo;ntmethodology, butisnotbeyondtheAllowable Value,performance isstillwithintherequirements oftheplantsafetyanalysis.

Undertheseconditions, thesetpointmustbereadjusted tobeequaltoormoreconservative thanaccounted forintheappropriate setpointmethodology.

TheFrequency of92daysisbasedonthereliability analysisofReferences 3and4.SR3.3.6.2.4 andSR3.3.6.2.5 CHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency ofSR3.3.6.2.4 andSR3.3.6.2.5 isbasedupontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

SR3.3.6.2.6 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredisolation logicforaspecificchannel.Thesystemfunctional testing,performed onSCIVsandtheSGTSysteminLCO3.6.4.2andLCO3.6.4.3,respectively, overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient ifthe(continued)

GRANDGULFB3.3-182LBDCR13043 BASESSURVEILLANCE REQUIREMENTS Secondary Containment Isolation Instrumentation B3.3.6.2SR3.3.6.2.6 (continued)

Surveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

SR3.3.6.2.7 ThisSRensuresthattheindividual channelresponsetimesarelessthanorequaltothemaximumvaluesassumedintheaccidentanalysis.

Testingisperformed onlyonchannelswheretheassumedresponsetimedoesnotcorrespond tothedieselgenerator (DG)starttime.ForchannelsassumedtorespondwithintheDCstarttime,sufficient marginexistsinthe10secondstarttimewhencomparedtothetypicalchannelresponsetime(milliseconds) soastoassureadequateresponsewithoutaspecificmeasurement test.Testingoftheclosuretimesoftheisolation dampersisnotincludedinthisSurveillance sincetheclosuretimeoftheisolation dampersistestedbySR3.6.4.2.2.

ISOLATION SYSTEMRESPONSETIMEacceptance criteriaforthisinstrumentation isincludedintheapplicable plantprocedures.

ANotetotheSurveillance statesthattheradiation detectors maybeexcludedfromISOLATION SYSTEMRESPONSETIMEtesting.ThisNoteisnecessary becauseofthedifficulty ofgenerating anappropriate detectorinputsignalandbecausetheprinciples ofdetectoroperation virtually ensureaninstantaneous responsetime.Responsetimeforradiation detectorchannelsshallbemeasuredfromdetectoroutputortheinputofthefirstelectronic component inthechannel.ISOLATION SYSTEMRESPONSETIMEtestsareconducted onan24monthSTAGGERED TESTBASIS.ThisFrequency isconsistent withthetypicalindustryrefueling cycleandisbaseduponplantoperating experience, whichshowsthatrandomfailuresofinstrumentation components causingseriousresponsetimedegradation, butnotchannelfailure,areinfrequent occurrences.

(continued)

GRANDGULFB3.3-183LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RHRContainment SpraySystemInstrumentation B3.3.6.3SR3.3.6.3.3 (continued) tripsettingisdiscovered tobelessconservative thanaccounted forintheappropriate setpointmethodology, butisnotbeyondtheAllowable Value,thechannelperformance isstillwithintherequirements oftheplantsafetyanalysis.

Undertheseconditions, thesetpointmustbereadjusted tobeequaltoormoreconservative thanaccounted forintheappropriate setpointmethodology.

TheFrequency of92daysisbaseduponthereliability analysisofReference 3.SR3.3.6.3.4 andSR3.3.6.3.5 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthatthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency ofSR3.3.6.3.4 andSR3.3.6.3.5 isbasedontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

SR3.3.6.3.6 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredinitiation logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.6.1.7,"Residual HeatRemoval(RHR)Containment Spray,"overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

(continued)

GRANDGULFB3.3-194LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

SPMUSystemInstrumentation B3.3.6.4SR3.3.6.4.4 andSR3.3.6.4.5 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthatthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency ofSR3.3.6.4.4 andSR3.3.6.4.5 isbasedontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

SR3.3.6.4.6 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredinitiation logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.6.2.4,"Suppression PoolMakeup(SPMU)System,"overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

REFERENCES 1.UFSAR,Section7.3.1.1.9.

2.UFSAR,Section6.2.7.3.3.GENE-770-06-1, "BasesforChangestoSurveillance TestIntervals andAllowedOut-of-Service TimesforSelectedInstrumentation Technical Specifications,"

February1991.GRANDGULFB3.3-207LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ReliefandLLSInstrumentation B3.3.6.5SR3.3.6.5.2 (continued) equaltoormoreconservative thanaccounted forintheappropriate setpointmethodology.

TheFrequency of92daysisbasedonthereliability analysisofReference 2.SR3.3.6.5.3 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency isbasedupontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis.

SR3.3.6.5.4 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredactuation logicforaspecificchannel.Thesystemfunctional testingperformed fotSjRVsinLCO3.4.4andLCO3.6.1.6overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

REFERENCES 1.UFSAR,Section5.2.2.2.GENE-770-06-1, "BasesforChangestoSurveillance TestIntervals andAllowedOut-of-Service TimesforSelectedInstrumentation Technical Specifications,"

February1991.GRANDGULFB3.3-213LBDCR13043 CRFASystemInstrumentation B3.3.7.1BASESACTIONSB.1(continued)

Withtherequiredactionandcompletion timenotmet,theassociated isolation dampersmustbeclosed.Thiseffectively establishes theisolation madeofCRFAoperation.

TheI-hourcompletion timeisintendedtoallowtheoperatortimetoestablish thismodeofoperation.

Itisacceptable becauseitminimizes riskwhileallowingtimetoestablish theCRFAsubsystem inoperation.

SURVEILLANCE REQUIREMENTS TheSurveillance isalsomodifiedbyaNotetoindicatethatwhenachannelisplacedinaninoperable statussolelyforperformance ofrequiredSurveillances, entryintoassociated Conditions andRequiredActionsmaybedelayedforupto6hours,providedtheassociated Functionmaintains CRFASysteminitiation capability.

Uponcompletion oftheSurveillance, or ofthe6hourallowance, thechannelmustbereturned;toOPERABLEstatusIortheapplicable Condition enteredandRequiredActionstaken.SR3.3.7.1.1 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequiredinitiation logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.7.3,"ControlRoomFreshAir(CRFA)System,"overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

(continued)

GRANDGULFB3.3-217LBDCR13043 BASESSURVEILLANCE REQUIREMENTS LOPInstrumentation B3.3.8.1SR3.3.8.1.1 (continued)

TheFrequency of31daysisbasedonplantoperating experience withregardtochannelOPERABILITY anddriftthatdemonstrates thatfailureofmorethanonechannelofagivenFunctioninany31dayintervalisrare.SR3.3.8.1.2 andSR3.3.8.1.3 ACHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency oftheseSurveillances isbasedontheassumption ofthemagnitude ofequipment driftinthesetpointanalysis, andthecurrentSurveillance performance.

SR3.3.8.1.4 TheLOGICSYSTEMFUNCTIONAL TESTdemonstrates theOPERABILITY oftherequired logicforaspecificchannel.Thesystemfunctional testingperformed inLCO3.8.1andLCO3.8.2overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunctions.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

REFERENCES 1.UFSAR,Section8.3.1.2.UFSAR,SectionS.2.3.UFSAR,Section6.3.4.UFSAR,ChapterIS.(continued)

GRANDGULFB3.3-231LBDCR13043 BASESACTIONSSURVEILLANCE REQUIREMENTS RPSElectricPowerMonitorlng B3.3.8.20.1(continued)

Allactionsmustcontinueuntiltheapplicable RequiredActionsarecompleted.

SR3.3.8.2.1 ACHANNELFUNCTIONAL TESTisperformed oneachovervoltage, undervoltage, andunderfrequency channeltoensurethattheentirechannelwillperformtheintendedfunction.

Anysetpointadjustment shallbeconsistent withtheassumptions ofthecurrentplantspecificsetpointmethodology.

AsnotedintheSurveillance, theCHANNELFUNCTIONAL TESTisonlyrequiredtobeperformed whiletheplantisinacondition inwhichthelossoftheRPSbuswillnotjeopardize steadystatepoweroperation (thedesignofthesystemissuchthatthepowersourcemustberemovedfromservicetoconducttheSurveillance).

The24hoursisintendedtoindicateanoutageofsufficient durationtoallowforscheduling andproperperformance oftheSurveillance.

The184dayFrequency andtheNoteintheSurveillance arebasedonguidanceprovidedinGenericLetter91-09(Ref.2).SR3.3.8.2.2 CHANNELCALIBRATION isacompletecheckoftheinstrument loopandthesensor.Thistestverifiesthatthechannelrespondstothemeasuredparameter withinthenecessary rangeandaccuracy.

CHANNELCALIBRATION leavesthechanneladjustedtoaccountforinstrument driftsbetweensuccessive calibrations consistent withtheplantspecificsetpointmethodology.

TheFrequency isbasedupontheassumption ofan24monthcalibration intervalinthedetermination ofthemagnitude ofequipment driftinthesetpointanalysis.

(continued)

GRANDGULFB3.3-237LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

RPSElectricPowerMonitoring B3.3.8.2SR3.3.8.2.3 Performance ofasystemfunctional testdemonstrates arequiredsystemactuation (simulated oractual)signal.Thediscreterelays/logic ofthesystemwillautomatically tripopentheassociated powermonitoring assemblycircuitbreaker.Onlyonesignalperpowermonitoring assemblyisrequiredtobetested.ThisSurveillance overlapswiththeCHANNELCALIBRATION toprovidecompletetestingofthesafetyfunction.

Thesystemfunctional testoftheClassIEcircuitbreakersisincludedaspartofthistesttoprovidecompletetestingofthesafetyfunction.

Ifthebreakersareincapable ofoperating, theassociated electricpowermonitoring assemblywouldbeinoperable.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

REFERENCES 1.UFSAR,Section8.3.1.1.5.

2.NRCGenericLetter91-09,"Modification ofSurveillance IntervalfortheElectricProtective Assemblies inPowerSuppliesfortheReactorProtection System."GRANDGULFB3.3-238LBDeR13043 FCVsB3.4.2BASESACTIONSB.1(continued)

IftheFCVsarenotdeactivated (lockedup)andcannotberestoredtoOPERABLEstatuswithintheassociated Completion Time,theunitmustbebroughttoaMODEinwhichtheLCOdoesnotapply.Toachievethisstatus,theunitmustbebroughttoatleastMODE3within12hours.Thisbringstheunittoacondition wheretheflowcoastdown characteristics oftherecirculation looparenotimportant.

TheallowedCompletion Timeof12hoursisreasonable, basedonoperating experience, toreachMODE3fromfullpowerconditions inanorderlymannerandwithoutchallenging unitsystems.SURVEILLANCE REQUIREMENTS SR3.4.2.1Hydraulic powerunitpilotoperatedisolation valveslocatedbetweentheservovalvesandthecommon"open"and"close"linesarerequiredtocloseintheeventofalossofhydraulic pressure.

Whenclosed,thesevalvesinhibitFCVmotionbyblockinghydraulic pressurefromtheservovalvetothecommonopenandcloselinesaswellastothealternate subloop.ThisSurveillance verifiesFCVlockuponalossofhydraulic pressure.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.4.2.2ThisSRensurestheoverallaveragerateofFCVmovementatallpositions ismaintained withintheanalyzedlimits.The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient ifthe(continued)

GRANDGULFB3.4-11LBDeR13043 BASESSURVEILLANCE REQUIREMENTS FCVsB3.4.2SR3.4.2.2(continued)

Surveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section15.3.2.GRANDGULF2.UFSAR,Section15.4.5.B3.4-12LBDeR13043 BASESSURVEILLANCE REQUIREMENTS 5/RVsB3.4.4SR3.4.4.1(continued) liftsettingsmustbeperformed duringshutdown, sincethisisabenchtest,andinaccordance withtheInservice TestingProgram.Theliftsettingpressureshallcorrespond toambientconditions ofthevalvesatnominaloperating temperatures andpressures.

Thesafetyliftsetpoints willstillbesetwithinatolerance ofV1percent,butthesetpoints willbetestedtowithinV3percenttodetermine acceptance orfailureoftheas-foundvalveliftsetpoint.

Ifavalveistestedandthelift.setpointisfoundoutsidethe3percenttolerance, twoadditional valvesaretobetested(Reference 4).TheFrequency wasselectedbecausethisSurveillance mustbeperformed duringshutdownconditions andisbasedonthetimebetweenrefuelings.

SR3.4.4.2Therequiredrelieffunction.S/RVsarerequiredtoactuateautomatically uponreceiptofspecificinitiation signals.Asystemfunctional testisperformed toverifymechanical portionsoftheautomatic relieffunctionoperateasdesignedwheninitiated eitherbyanactualorsimulated initiation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.5.4 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNotethatexcludesvalveactuation.

ThispreventsanRPVpressureblowdown.

SR3.4.4.3Amanualactuation ofeachrequiredS/RV(thosevalvesremovedandreplacedtosatisfySR3.4.4.1)isperformed to(continued)

GRANDGULFB3.4-20LBDeR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

RCSLeakageDetection Instrumentation B3.4.7SR3.4.7.3ThisSRrequirestheperformance ofaCHANNELCALIBRATION oftherequiredRCSleakagedetection instrumentation channels.

Thecalibration verifiestheaccuracyoftheinstrumentation, including theinstruments locatedinsidethedrywell.TheFrequency of24monthsisatypicalrefueling cycleandconsiders channelreliability.

Operating experience hasproventhisFrequency isacceptable.

REFERENCES 1.10CFR50,AppendixA,GDC30.2.Regulatory Guide1.45,Revision0,"ReactorCoolantPressureBoundaryLeakageDetection System."May1973.3.GEAP-5620, "FailureBehaviorinASTMAI06BPipesContaining AxialThroughCWallFlaws,"April1968.4.NUREG-75/067, "Investigation andEvaluation ofCrackinginAustenitic Stainless SteelPipingofBoilingWaterReactorPlants,"October1975.5.UFSAR,Section5.2.5.5.3.

6.UFSAR,Section5.2.5.2.GRANDGULFB3.4-37LBDeR13043 BASESSURVEILLANCE REQUIREMENTS ECCS-OperatingB3.5.1SR3.5.1.4(continued) losses,andRPVpressurepresentduringLOCAs.Thesevaluesmaybeestabiished duringpre-operational testing.TheFrequency forthisSurveillance isinaccordance withtheInservice TestingProgramrequirements.

SR3.5.1.5TheECCSsubsystems arerequiredtoactuateautomatically toperformtheirdesignfunctions.

ThisSurveillance testverifiesthat,witharequiredsysteminitiation signal(actualorsimulated),

theautomatic initiation logicofHPCS,LPCS,andLPCIwillcausethesystemsorsubsystems tooperateasdesigned, including actuation ofthesystemthroughout itsemergency operating

sequence, automatic pumpstartup,andactuation ofallautomatic valvestotheirrequiredpositions.

ThisSurveillance alsoensuresthattheHPCSSystemwillautomatically restartonanRPVlowwaterlevel(Level2)signalreceivedsubsequent toanRPVhighwaterlevel(Level8)tripandthatthesuctionisautomatically transferred fromtheCSTtothesuppression pool.TheLOGICSYSTEMFUNCTIONAL TESTperformed inLCO3.3.5.1,"Emergency CoreCoolingSystem(ECCS)Instrumentation,"

overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutage(exceptforDivisionIIIwhichcanbetestedinanyoperational condition) andthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNotethatexcludesvesselinjection/spray duringtheSurveillance.

Sinceallactivecomponents aretestableandfullflowcanbedemonstrated byrecirculation throughthetestline,coolantinjection intotheRPVisnotrequiredduringtheSurveillance.

(continued)

GRANDGULFB3.5-11LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

ECCS-OperatingB3.5.1SR3.5.1.6TheADSdesignated S/RVsarerequiredtoactuateautomatically uponreceiptofspecificinitiation signals.Asystemfunctional testisperformed todemonstrate thatthemechanical portionsoftheADSfunction(i.e.,solenoids) operateasdesignedwheninitiated eitherbyanactualorsimulated initiation signal,causingproperactuation ofalltherequiredcomponents.

SR3.5.1.7andtheLOGICSYSTEMFUNCTIONAL TESTperformed inLCO3.3.5.1overlapthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNotethatexcludesvalveactuation.

ThispreventsanRPVpressureblowdown.

SR3.5.1.7Amanualactuation ofeachrequiredADSvalve(thosevalvesremovedandreplacedtosatisfySR3.4.4.1)isperformed toverifythatthevalveisfunctioning properly.

ThisSRcanbedemonstrated byoneoftwomethods.Ifperformed bymethod1),plantstartupisallowedpriortoperforming thistestbecausevalveOPERABILITY andthesetpoints foroverpressure protection areverified, perASMErequirements (Ref.19),priortovalveinstallation.

Therefore, thisSRismodifiedbyaNotethatstatestheSurveillance isnotrequiredtobeperformed until12hoursafterreactorsteampressureandflowareadequatetoperformthetest..The12hoursallowedformanualactuation aftertherequiredpressureisreachedissufficient toachievestableconditions fortestingand(continued)

GRANDGULFB3.5-12LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ECCS-OperatingB3.5.1SR3.5.1.8(continued)

HPCSSystemECCSSYSTEMRESPONSETIMEtestsareconducted every24months.ThisFrequency isconsistent withthetypicalindustryrefueling cycleandisbasedonindustryoperating experience.

REFERENCES 1.UFSAR,Section6.3.2.2.3.

2.UFSAR,Section6.3.2.2.4.

3.UFSAR,Section6.3.2.2.1.

4.UFSAR,Section6.3.2.2.2.

5.UFSAR,Section15.6.6.6.UFSAR,Section15.6.4.7.UFSAR,Section15.6.5.8.10CFR50,AppendixK.9.UFSAR,Section6.3.3.10.10CFR50.46.11.UFSAR,Section6.3.3.3.12.Memorandum fromR.L.Baer(NRC)toV.Stello,Jr.(NRC),"Recommended InterimRevisions toLCD'sforECCSComponents,"

December1,1975.13.UFSAR,Section6.3.3.7.8.

14.UFSAR,Section7.3.1.1.1.4.2.

15.GNRI-96/00229, Amendment 130totheOperating License.16.NEDO-32291-A, "SystemAnalysesforElimination ofSelectedResponseTimeTestingRequirements,1I October1995.(continued)

GRANDGULFB3.5-14LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

RCICSystemB3.5.3SR3.5.3.3andSR3.5.3.4TheRCICpumpflowratesensurethatthesystemcanmaintainreactorcoolantinventory duringpressurized conditions withtheRPVisolated.

TheflowtestsfortheRCICSystemareperformed attwodifferent pressurerangessuchthatsystemcapability toprovideratedflowistestedbothatthehigherandloweroperating rangesofthesystem.Additionally, adequatesteamflowmustbepassingthroughthemainturbineorturbinebypassvalvestocontinuetocontrolreactorpressurewhentheRCICSystemdivertssteamflow.Sincetherequiredreactorsteampressuremustbeavailable toperformSR3.5.3.3andSR3.5.3.4,sufficient timeisallowedafteradequatepressureandflowareachievedtoperformtheseSRs.Reactorstartupisallowedpriortoperforming thelowpressureSurveillance becausethereactorpressureislowandthetimetosatisfactorily performtheSurveillance isshort.Thereactorpressureisallowedtobeincreased tonormaloperating pressuresinceitisassumedthatthelowpressuretesthasbeensatisfactorily completed andthereisnoindication orreasontobelievethatRCICisinoperable.

Therefore, theseSRsaremodifiedbyNotesthatstatetheSurveillances arenotrequiredtobeperformed until12hoursafterthereactorsteampressureandflowareadequatetoperformthetest.A92dayFrequency forSR3.5.3.3isconsistent withtheInservice TestingProgramrequirements.

The24monthFrequency forSR3.5.3.4isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyjustpriortoorduringstartupfromaplantoutage.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency, whichisbasedontherefueli"ng cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.5.3.5TheRCICSystemisrequiredtoactuateautomatically toperformitsdesignfunction.

ThisSurveillance verifiesthatwitharequiredsysteminitiation signal(actualorsimulated) theautomatic initiation logicofRCICwillcausethesystemtooperateasdesigned, including actuation ofthesystemthroughout itsemergency operating

sequence, (continued)

GRANDGULFB3.5-25LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RCICSystemB3.5.3SR3.5.3.5(continued) automatic pumpstartupandactuation ofallautomatic valvestotheirrequiredpositions.

ThisSurveillance testalsoensuresthattheRCICSystemwillautomatically restartonanRPVlowwaterlevel(Level2)signalreceivedsubsequent toanRPVhighwaterlevel(Level8)tripandthatthesuctionisautomatically transferred fromtheCSTtothesuppression pool.TheLOGICSYSTEMFUNCTIONAL TESTperformed inLCO3.3.5.2,"Reactor*

CoreIsolation Cooling(RCIC)SystemInstrumentation,"

overlapsthisSurveillance toprovidecompletetestingoftheassumedsafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNotethatexcludesvesselinjection duringtheSurveillance.

Sinceallactivecomponents aretestableandfullflowcanbedemonstrated byrecirculation throughthetestline,coolantinjection intotheRPVisnotrequiredduringtheSurveillance.

REFERENCES 1.10CFR50,AppendixAtGDC33.2.UFSAR,Section5.4.6.2.3.Memorandum fromR.L.Baer(NRC)toV.Stello,Jr.(NRC),"Recommended InterimRevisions toLCO'sforECCSComponents,"

December1,1975.GRANDGULFB3.5-26LBDCR13043 SURVEILLANCE REQUIREMENTS (continued)

PrimaryContainment AirLocksB3.6.1.2SR3.6.1.2.4 Asealpneumatic systemtesttoensurethatpressuredoesnotdecayatarateequivalent to>2psigforaperiodof48hoursfromaninitialpressureof90psigisaneffective leakageratetesttoverifysystemperformance.

The24monthFrequency isbasedonthefactthatoperating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section3.8.2.10CFR50,AppendixJ.3.UFSAR,Table6.2-13.GRANDGULFB3.6-13LBDCR13043 BASESSURVEILLANCE REQUIREMENTS PCIVsB3.6.1.3SR3.6.1.3.7 (continued) eachautomatic PCIVwillactuatetoitsisolation positiononaprimarycontainment isolation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.1.7 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypassthisSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.6.1.3.8 TheanalysesinReference 2isbasedonleakagethatislessthanthespecified leakagerate.Leakagethroughanysinglemainsteamlinemustbes100scfhwhentestedatapressureof11.9psig.Leakagethroughallfoursteamlinesmustbe250scfhwhentestedatPa(11.9psig).TheMSIVleakageratemustbeverifiedtobeinaccordance withtheleakagetestrequirements ofReference 3,asmodifiedbyapprovedexemptions.

ANoteisaddedtothisSRwhichstatesthatthesevalvesareonlyrequiredtomeetthisleakagelimitinMODES1,2and3.Intheotherconditions, theReactorCoolantSystemisnotpressurized andspecificprimarycontainment leakagelimitsarenotrequired.

SR3.6.1.3.9 Surveillance ofhydrostatically testedlinesprovidesassurance thatthecalculation

• assumptions ofReference 2ismet.ThisSRismodifiedbyaNotethatstatesthesevalvesareonlyrequiredtomeetthecombinedleakagerateinMODES1,2,and3sincethisiswhentheReactorCoolantSystemis(continued)

GRANDGULFB3.6-25LBDeR13043 BASESSURVEILLANCE REQUIREMENTS LLSValvesB3.6.1.6SR3.6.1.6.1 (continued)

TheSTAGGERED TESTBASISFrequency ensuresthatbothsolenoids foreachLLSvalverelief-mode actuatorarealternatively tested.TheFrequency oftherequiredrelief-mode actuatortestingisbasedonthetestsrequiredbyASME'OMPart1(Ref.3),asimplemented bytheInservice TestingProgramofSpecification 5.5.6.ThetestingFrequency requiredbytheInservice TestingProgramisbasedonoperating experience andvalveperformance.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

(Reference 4)SR3.6.1.6.2 TheLLSdesignedS/RVsarerequiredtoactuateautomatically uponreceiptofspecificinitiation signals.Asystemfunctional testisperformed toverifythatthemechanical portions(i.e.,solenoids) oftheautomatic LLSfunctionoperateasdesignedwheninitiated eitherbyanactualorsimulated automatic initiation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.5.4 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNotethatexcludesvalveactuation.

Thispreventsareactorpressurevesselpressureblowdown.

REFERENCES 1.GESSAR-II, Appendix3B,Attachment A,Section3BA.8.2.UFSAR,Section5.2.2.2.3.3.

3.ASMECodeofOperation andMaintenance ofNuclearPowerPlants,Part1.4.GNRI-96/00229, Amendment 130totheOperating License.GRANDGULFB3.6-35LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RHRContainment SpraySystemB3.6.1.7SR3.6.1.7.1 (continued)

ANotehasbeenaddedtothisSRthatallowsRHRcontainment spraysubsystems tobeconsidered OPERABLEduringalignment toandoperation intheRHRshutdowncoolingmodewhenbelowtheRHRcutinpermissive pressureinMODE3,ifcapableofbeingmanuallyrealigned andnototherwise inoperable.

Attheselowpressures anddecayheatlevels(thereactorisshutdowninMODE3),areducedcomplement ofsubsystems shouldprovidetherequiredcontainment pressuremitigation functiontherebyallowingoperation ofanRHRshutdowncoolingloopwhennecessary.

SR3.6.1.7.2 Verifying eachRHRpumpdevelopsaflowrate7450gpmwhileoperating inthesuppression poolcoolingmodewithflowthroughtheassociated heatexchanger ensuresthatpumpperformance hasnotdegradedbelowtherequiredflowrateduringthecycle.Itistestedinthepoolcoolingmodetodemonstrate pumpOPERABILITY withoutsprayingdownequipment inprimarycontainment.

Flowisanormaltestofcentrifugal pumpperformance requiredbytheASMECode,SectionXI(Ref.2).Thistestconfirmsonepointonthepumpdesigncurveandisindicative ofoverallperformance.

Suchinservice inspections confirmcomponent OPERABILITY, trendperformance, anddetectincipient failuresbyindicating abnormalperformance.

TheFrequency ofthisSRisinaccordance withtheInservice TestingProgram.SR3.6.1.7.3 ThisSRverifiesthateachRHRcontainment spraysubsystem automatic valveactuatestoitscorrectpositionuponreceiptofanactualorsimulated automatic actuation signal.Actualsprayinitiation isnotrequiredtomeetthisSR.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.3.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed at(continued)

GRANDGULFB3.6-39LBDCR13043 BASESSURVEILLANCE REQUIREMENTS RHRContainment SpraySystemB3.6.1.7SR3.6.1.7.3 (continued) the24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section6.2.1.1.5.

2.ASME,BoilerandPressureVesselCode,SectionXI.GRANDGULFB3.6-40LBDCR13043 BASESACTIONS(continued)

SURVEILLANCE REQUIREMENTS MSIVLCSB3.6.1.9C.1andC.2IftheMSIVLCSsubsystem cannotberestoredtoOPERABLEstatuswithintherequiredCompletion Time,theplantmustbebroughttoaMODEinwhichtheLCOdoesnotapply.Toachievethisstatus,theplantmustbebroughttoatleastMODE3within12hoursandtoMODE4within36hours.TheallowedCompletion Timesarereasonable, basedonoperating experience, toreachtherequiredplantconditions fromfullpowerconditions inanorderlymannerandwithoutchallenging plantsystems.SR3.6.1.9.1 EachoutboardMSIVLCSblowerisoperatedfor215minutestoverifyOPERABILITY.

The31dayFrequency wasdeveloped considering theknownreliability oftheLCSblowerandcontrols, thetwosubsystem redundancy, andthelowprobability ofasignificant degradation oftheMSIVLCSsubsystem occurring betweensurveillances andhasbeenshowntobeacceptable throughoperating experience.

SR3.6.1.9.2 DeletedSR3.6.1.9.3 Asystemfunctional testisperformed toensurethattheMSIVLCSwilloperatethroughitsoperating sequence.

Thisincludesverifying thattheautomatic positioning ofthevalvesandtheoperation ofeachinterlock andtimerarecorrect,thattheblowersstartanddeveloptherequiredflowrateandthenecessary vacuum.The24month(continued)

GRANDGULFB3.6-46LBDeR13043 BASESSURVEILLANCE REQUIREMENTS MSIVLCSB3.6.1.9SR3.6.1.9.3 (continued)

Frequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section6.7.1.GRANDGULF2.UFSAR,Section15.6.5.B3.6-47LBDCR13043 BASESSURVEILLANCE REQUIREMENTS SR3.6.2.4.4 (continued)

SPMUSystemB3.6.2.4thegatesinstalled iftheSuppression PoolLowLevellimitisincreased to18ft51/12inches.(SeeReference 3).The31dayFrequency isappropriate becausethegatesaremovedunderprocedural controlandonlytheinfrequent movementofthesegatesisrequiredinMODES1,2,and3.Theprovision toallowgateinstallation inMODES1,2,and3resultsinisolating aportionoftheSPMUSystemdumpvolume.Thisprovision doesnotapplytotheseparator poolweirwallextension gates.Thesegatesarenotreadilyaccessible withtheuppercontainment poolatitsrequiredlevel.Supporting analyseshaveshownthatincreasing theminimumsuppression poolleveladequately compensates forwatertrappedbyisolating thefuelstorageand/orfueltransfercanalareas.SR3.6.2.4.5 ThisSRrequiresaverification thateachSPMUsubsystem automatic valveactuatestoitscorrectpositiononreceiptofanactualorsimulated automatic initiation signal.Thisincludesverification ofthecorrectautomatic positioning ofthevalvesandoftheoperation ofeachinterlock andtimer.Asnoted,actualmakeuptothesuppression poolmaybeexcluded.

TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.4.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

ThisSRismodifiedbyaNOTEthatexcludesmakeuptothesuppression pool.Sinceallactivecomponents aretestable, makeuptothesuppression poolisnotrequired.

(continued)

GRANDGULFB3.6-65LBDCR13043 PrimaryContainment andDrywellHydrogenIgnitersB3.6.3.2BASES(continued)

SURVEILLANCE REQUIREMENTS SR3.6.3.2.1 andSR3.6.3.2.2 TheseSRsverifythattherearenophysicalproblemsthatcouldaffecttheigniteroperation.

Sincetheignitersaremechanically passive,theyarenotsubjectto failure.Theonlycrediblefailuresarelossofpowerorburnout.Theverification thateachrequiredigniterisenergized isperformed bycircuitcurrentversusvoltagemeasurement.

TheFrequency of184dayshasbeenshowntobeacceptable throughoperating experience becauseofthelowfailureoccurrence, andprovidesassurance thathydrogenburncapability existsbetweenthemorerigorous18monthSurveillances.

Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed ata184dayFrequency.

Additionally, thesesurveillances mustbeperformed every92daysiffourormoreignitersinanydivisionareinoperable.

The92dayFrequency waschosen,recognizing thatthefailureoccurrence ishigherthannormal.Thus,decreasing theFrequency from184daysto92daysisaprudentmeasure,sinceonlyonemoreinoperable igniters(foratotaloffive)willresultinaninoperable igniterdivision.

SR3.6.3.2.2 ismodifiedbyaNotethatindicates thattheSurveillance isnotrequiredtobeperformed until92daysafterfourormoreignitersinthedivisionarediscovered tobeinoperable.

SR3.6.3.2.3 andSR3.6.3.2.4 Thesefunctional testsareperformed every18monthstoverifysystemOPERABILITY.

Thecurrentdrawtodevelopasurfacetemperature of$1700EFisverifiedforignitersininaccessible areas,e.g.,inahighradiation area.Additionally, thesurfacetemperature ofeachaccessible igniterismeasuredtobe$1700EFtodemonstrate thatatemperature sufficient forignitionisachieved.

Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

(continued)

GRANDGULFB3.6-76LBDCR13043 BASESSURVEILLANCE REQUIREMENTS DrywellPurgeSystemB3.6.3.3SR3.6.3.3.2 (continued) thatallassociated controlsarefunctioning properly.

Italsoensuresthatblockage, compressor failure,orexcessive vibration canbedetectedforcorrective action.The92dayFrequency isconsistent withInservice TestingProgramFrequencies, operating experience, theknownreliability ofthecompressor andcontrols, andthetworedundant subsystems available.

SR3.6.3.3.3 Operating eachdrywellpurgesubsystem for15minutesandverifying thateachdrywellpurgesubsystem flowrateis>1000scfmensuresthateachsubsystem iscapableofmaintaining drywellhydrogenconcentrations belowtheflammability limit.The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutagewhenthedrywellboundaryisnotrequired.

Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.6.3.3.4 ThisSRverifiesthatthepressuredifferential requiredtoopenthevacuumbreakersis1.0psid,andthattheisolation valvedifferential pressureactuation instrumentation opensthevalveat0.0to1.0psid(drywellminuscontainment).

ThisSRincludesaCHANNELCALIBRATION oftheisolation valvedifferential pressureactuation instrumentation.

Operating experience hasshownthatthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.Regulatory Guide1.7,Revision1.2.UFSAR,Section6.2.5.3.Technical Specification Amendment 145toGGNSOperating License.GRANDGULFB3.6-82LBDeR13043 BASESSURVEILLANCE REQUIREMENTS Secondary Containment B3.6.4.1SR3.6.4.1.3 andSR3.6.4.1.4 (continued) theseSRsistoensurethattheSGTsubsystem, beingusedforthetest,functions asdesigned.

ThereisaseparateLCO3.6.4.3withSurveillance Requirements whichservestheprimarypurposeofensuringOPERABILITY oftheSGTsystem.SRs3.6.4.1.3 and3.6.4.1.4 neednotbeperformed witheachSGTsubsystem.

TheSGTsubsystem usedfortheseSurveillances isstaggered toensurethatinadditiontotherequirements ofLCO3.6.4.3,eitherSGTsubsystem willperformthistest.Theinoperability oftheSGTsystemdoesnotnecessarily constitute afailureoftheseSurveillances relativetothesecondary containment OPERABILITY.

Operating experience hasshownthesecondary containment boundaryusuallypassestheseSurveillances whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section15.6.5.GRANDGULF2.UFSAR,Section15.7.4.B3.6-87aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS SCIVsB3.6.4.2SR3.6.4.2.1 (continued) relatively easy,the31dayFrequency waschosentoprovideaddedassurance thattheSCIVsareinthecorrectpositions.

TwoNoteshavebeenaddedtothisSR.ThefirstNoteappliestovalves,dampers,rupturedisks,andblindflangeslocatedinhighradiation areasandallowsthemtobeverifiedbyuseofadministrative controls.

Allowingverification byadministrative controlsisconsidered acceptable, sinceaccesstotheseareasistypically restricted duringMODES1,2,and3forALARAreasons.Therefore, theprobability ofmisalignment oftheseSCIVs,oncetheyhavebeenverifiedtobeintheproperposition, islow.AsecondNotehasbeenincludedtoclarifythatSCIVsthatareopenunderadministrative controlsarenotrequiredtomeettheSRduringthetimetheSCIVsareopen.SR3.6.4.2.2 Verifying theisolation timeofeachpoweroperated, automatic SCIViswithinlimitsisrequiredtodemonstrate OPERABILITY.

Theisolation timetestensuresthattheSCIVwillisolateinatimeperiodlessthanorequaltothatassumedinthesafetyanalyses.

Generally, SCIVsmustclosewithin120secondstosupportthefunctioning oftheStandbyGasTreatment System.SCIVsmayhaveanalytical closuretimesbasedonafunctionotherthansecondary containment isolation, inwhichcasethemorerestrictive timeapplies.TheFrequency ofthisSRisinaccordance withtheInservice TestingProgram.SR3.6.4.2.3 Verifying thateachautomatic SCIVclosesonasecondary containment isolation signalisrequiredtopreventleakageofradioactive materialfromsecondary containment following aDBAorotheraccidents.

ThisSRensuresthateachautomatic SCIVwillactuatetotheisolation positiononasecondary containment isolation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.2.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24month(continued)

GRANDGULFB3.6-94LBDCR13043 BASESSURVEILLANCE REQUIREMENTS SCIVsB3.6.4.2SR3.6.4.2.3 (continued)

Frequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower.Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section15.6.5.2.UFSAR,Section6.2.3.3.UFSAR,Section15.7.4.GRANDGULFB3.6-95LBDCR13043 BASESSURVEILLANCE REQUIREMENTS SCIVsB3.6.4.3SR3.6.4.3.3 (continued)

TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.2.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

WhilethisSurveillance canbeperformed withthereactoratpower,operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.10CFR50,AppendixA,GDC41.GRANDGULF2.UFSAR,Section6.5.3.B3.6-101LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

DrywellIsolation Valve(s)B3.6.5.3SR3.6.5.3.3 Verifying thattheisolation timeofeachpoweroperated, automatic drywellisolation valveiswithinlimitsisrequiredtodemonstrate OPERABILITY.

Theisolation timetestensuresthevalvewillisolateinatimeperiodlessthanorequaltothatassumedinthesafetyanalysis.

Theisolation timeandFrequency ofthisSRareinaccordance withtheInservice TestingProgram.SR3.6.5.3.4 Verifying thateachautomatic drywellisolation valveclosesonadrywellisolation signalisrequiredtopreventbypassleakagefromthedrywellfollowing aDBA.ThisSRensureseachautomatic drywellisolation valvewillactuatetoitsisolation positiononadrywellisolation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.6.1.7 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential foranunplanned transient iftheSurveillance wereperformed withthereactoratpower,sinceisolation ofpenetrations wouldeliminate coolingwaterflowanddisruptthenormaloperation ofmanycriticalcomponents.

Operating experience hasshownthesecomponents usuallypassthisSurveillance whenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.OFSAR,Section6.2.4.2.GNRI-96/00162, IssuanceofAmendment No.126toFacilityOperating LicenseNo.NPF-29-GrandGulfNuclearStation,Unit1(TACNo.M94176),datedAugust1,1996.GRANDGULFB3.6-119LBDCR13043 BASESSURVEILLANCE REQUIREMENTS DrywellVacuumReliefSystemB3.6.5.6SR3.6.5.6.2 (continued)

ThisSurveillance includesaCHANNELFUNCTIONAL TESToftheisolation valvedifferential pressureactuation instrumentation.

Thisprovidesassurance thatthesafetyanalysisassumptions arevalid.TheFrequency ofthisSurveillance isinaccordance withInservice TestProgram.SR3.6.5.6.3 Verification oftheopeningpressuredifferential isnecessary toensurethatthesafetyanalysisassumption thatthevacuumbreakerorisolation valvewillopenfullyatadifferential pressureof1.0psidisvalid.ThisSRverifiesthatthepressuredifferential requiredtoopenthevacuumbreakersis1.0psidandthattheisolation valvedifferential pressureactuation instrumentation opensthevalveat0.0to1.0psidforthedrywellpurgevacuumreliefsubsystem and-1.0to0.0psidforthepost-LOCA vacuumreliefsubsystems (drywellminuscontainment).

ThisSRincludesaCHANNELCALIBRATION oftheisolation valvedifferential pressureactuation instrumentation.

ThisSurveillance includesacalibration ofthepositionindication asnecessary.

The24monthFrequency isbasedontheneedtoperformthisSurveillance undertheconditions thatapplyduringaplantoutageandthepotential forviolating thedrywellboundary.

Operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

REFERENCES GRANDGULF1.UFSAR,Section6.2.B3.6-130LBDCR13043 BASESSURVEILLANCE REQUIREMENTS SSWSystemandUHSB3.7.1SR3.7.1.4(continued) isdemonstrated byuseofanactualorsimulated initiation signal.ThisSRalsoverifiestheautomatic startcapability oftheSSWpumpandcoolingtowerfansineachsubsystem.

TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.5.1.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed onthe24monthFrequency.

Therefore, thisFrequency isconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.Regulatory Guide1.27,Revision2,January1976.2.UFSAR,Section9.2.1.3.UFSAR,Table9.2-3.4.UFSAR,Section6.2.1.1.3.3.

5.UFSAR,Chapter15.6.UFSAR,Section6.2.2.3.7.UFSAR,Table6.2-2.GRANDGULFB3.7-7LBDCR13043 BASESSURVEILLANCE REQUIREMENTS HPCSSWSB3.7.2SR3.7.2.1(continued) thosevalvescapableofpotentially beingmispositioned areinthecorrectposition.

ThisSRdoesnotapplytovalvesthatcannotbeinadvertently misaligned, suchascheckvalves.Isolation oftheHPCSSWStocomponents orsystemsmayrenderthosecomponents orsystemsinoperable, butmaynotaffecttheOPERABILITY oftheHPCSSWS.Assuch,whenallHPCSSWSpumps,valves,andpipingareOPERABLE, butabranchconnection offthemainheaderisisolated, theHPCSSWSneedstobeevaluated todetermine ifit;sstillOPERABLE.

The31dayFrequency

sbasedonengineering

judgment, isconsistent withtheprocedural controlsgoverning valveoperation, andensurescorrectvalvepositions.

SR3.7.2.2ThisSRverifiesthattheautomatic isolation valvesoftheHPCSSWSwillautomatically switchtothesafetyoremergency positiontoprovidecoolingwaterexclusively tothesafetyrelatedequipment duringanaccidentevent.Thisisdemonstrated byuseofanactualorsimulated initiation signal.ThisSRalsoverifiestheautomatic startcapability oftheHPCSSWSpump.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.5.1.6 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, thisFrequency isconcluded tobeacceptable fromareliability standpoint.

REFERENCES 1.UFSAR,Section9.2.1.GRANDGULF2.UFSAR,Chapter6.3.UFSAR,Chapter15.B3.7-10LBDCR13043 CRFASystemB3.7.3BASES(continued)

SURVEILLANCE REQUIREMENTS SR3.7.3.1ThisSRverifiesthatasubsystem inastandbymodestartsfromthecontrolroomondemandandcontinues tooperate.Standbysystemsshouldbecheckedperiodically toensurethattheystartandfunctionproperly.

Astheenvironmental andnormaloperating conditions ofthissystemarenotsevere,testingeachsubsystem onceeverymonthprovidesanadequatecheckonthissystem.Furthermore, the31dayFrequency isbasedontheknownreliability oftheequipment andthetwosubsystem redundancy available.

SR3.7.3.2ThisSRverifiesthattherequiredCRFAtestingisperformed inaccordance withtheVentilation FilterTestingProgram(VFTP).TheVFTPincludestestingHEPAfilterperformance, andminimumsystemflowrate.Specifictestfrequencies andadditional information arediscussed indetailintheVFTP.SR3.7.3.3ThisSRverifiesthateachCRFAsubsystem startsandoperatesandthattheisolation valvesclosein#4secondsonanactualorsimulated initiation signal.TheLOGICSYSTEMFUNCTIONAL TESTinSR3.3.7.1.1 overlapsthisSRtoprovidecompletetestingofthesafetyfunction.

WhilethisSurveillance canbeperformed withthereactoratpower,operating experience hasshownthesecomponents usuallypasstheSurveillance whenperformed atthe24monthFrequency, whichisbasedontherefueling cycle.Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.7.3.4ThisSRverifiestheOPERABILITY oftheCREboundarybytestingforunfiltered airinleakage pasttheCREboundaryandintotheCRE.Thedetailsofthetestingarespecified intheControlRoomEnvelopeHabitability Program.(continued)

GRANDGULFB3.7-16aLBDCR13043I ControlRoomACSystemB3.7.4BASESACTIONSE.1(continued)

DuringOPDRVsiftheRequiredActionandassociated Completion TimeofCondition Bisnotmet,actionmustbetakentoimmediately suspendactivities thatpresentapotential forreleasing radioactivity thatmightrequireisolation ofthecontrolroom.Thisplacestheunitinacondition thatminimizes risk.Ifapplicable, actionsmustbeinitiated immediately tosuspendOPDRVstominimizetheprobability ofavesseldraindown andsubsequent potential forfissionproductrelease.ActionsmustcontinueuntiltheOPDRVsaresuspended.

SURVEILLANCE REQUIREMENTS SR3.7.4.1ThisSRverifiesthattheheatremovalcapability ofthesystemissufficient toremovethecontrolroomheatloadassumedinthesafetyanalysis.

TheSRconsistsofacombination oftestingandcalculation.

The24monthFrequency isappropriate sincesignificant degradation oftheControlRoomACSystemisnotexpectedoverthistimeperiod.REFERENCES 1.UFSAR,Section6.4.GRANDGULF2.UFSAR,Section9.4.1.B3.7-21LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.6(continued)

Thedesignofthefueltransfersystemsissuchthatpumpsoperateautomatically inordertomaintainanadequatevolumeoffueloilinthedaytanksduringorfollowing DGtesting.Therefore, a31dayFrequency isspecified tocorrespond tothemaximumintervalforDGtesting.SR3.8.1.7Underaccidentconditions, loadsaresequentially connected tothebusbytheloadsequencing panel.Thesequencing logiccontrolsthepermissive andstartingsignalstomotorbreakerstopreventoverloading ofthebuspowersuppliesduetohighmotorstartingcurrents.

Theloadsequencing ensuresthatsufficient timeexistsforthebuspowersupplytorestorefrequency andvoltagepriortoapplyingthenextloadandthatsafetyanalysisassumptions regarding ESFequipment timedelaysarenotviolated.

Reference 2providesasummaryoftheautomatic loadingofESFbuses.ThisSurveillance isamanualtestoftheloadsheddingandsequencing panelsandverifiestheloadsheddingandsequencing panelsrespondwithindesigncriteriatothefollowing testinputs:LOCA,busundervoltage, busundervoltage followedbyLOCA,andLOCAfollowedbybusundervoltage.

TheFrequency of31daysisbasedonengineering

judgment, takingintoconsideration plantconditions requiredtoperformtheSurveillance.

Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe31dayFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.8.1.8Transferofeach4.16kVESFbuspowersupplyfromthenormaloffsitecircuittothealternate offsitecircuitdemonstrates theOPERABILITY ofthealternate circuit.The24monthFrequency oftheSurveillance isbasedonengineering judgmenttakingintoconsideration theplantconditions requiredtoperformtheSurveillance, andis(continued)

GRANDGULFB3.8-18LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.8(continued) intendedtobeconsistent withexpectedfuelcyclelengths.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed onthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

(continued)

GRANDGULFB3.8-18aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.9(continued) 2)trippingitsassociated singlelargestloadwiththeDGsolelysupplying thebus.Ifthisloadweretotrip,itwouldresultinthelossoftheDG.AsrequiredbyIEEE-308(Ref.13),theloadrejection testisacceptable iftheincreaseindieselspeeddoesnotexceed75%ofthedifference betweensynchronous speedandtheoverspeed tripsetpoint, or15%abovesynchronous speed,whichever islower.FortheGrandGulfNuclearStationthelowervalueresultsfromthefirstcriteria.

The24monthFrequency isconsistent withtherecommendation ofRegulatory Guide1.9(Ref.3).Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

ThisSRhasbeenmodifiedbytwoNotes.Note1states;Creditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequatedocumentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction withmaintenance requiredtomaintainOPERABILITY orreliability.

Note2ensuresthattheDGistestedunderloadconditions thatareasclosetodesignbasisconditions aspossible.

Whensynchronized withoffsitepower,testingshouldbeperformed atapowerfactorof0.9forDG11andDG13and0.89forDG12.Thesepowerfactorsarerepresentative oftheactualinductive loadingtheDGswouldseeunderdesign(continued)

GRANDGULFB3.8-20LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.10(continued)

The24monthFrequency isconsistent withtherecommendation ofRegulatory Guide1.9(Ref.3)andisintendedtobeconsistent withexpectedfuelcyclelengths.Testingperformed forthisSRisnormallyconducted withtheDCbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

ThisSRhasbeenmodifiedbyatwoNotes.Note1statesthatcreditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequatedocumentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction withmaintenance requiredtomaintainOPERABILITY orreliability.

Note2ensuresthattheDGistestedunderloadconditions thatareasclosetodesignbasisconditions aspossible.

Whensynchronized withoffsitepower,testingshouldbeperformed atapowerfactorof0.9forDG11andDG13and0.89forDG12.Thesepowerfactorsarerepresentative oftheactualinductive loadingtheDGswouldseeunderdesignbasisaccidentconditions.

Undercertainconditions, however,Note2allowsthesurveillance tobeconducted atapowerfactorabovethelimit.Theseconditions occurwhengridvoltageishigh,andtheadditional fieldexcitation neededtogetthepowerfactortowithinthelimitsresultsinvoltagesontheemergency bussesthataretoohigh.Undertheseconditions, thepowerfactorshouldbemaintained ascloseaspracticable tothelimitwhilestillmaintaining acceptable voltagelimitsontheemergency busses.Inothercircumstances, thegridvoltage(continued)

GRANDGULFB3.8-22LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.11(continued)

TheFrequency of24monthsisconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3)takesintoconsideration unitconditions requiredtoperformtheSurveillance, andisintendedtobeconsistent withexpectedfuelcyclelengths.Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

ThisSRismodifiedbytwoNotes.ThereasonforNote1istominimizewearandtearontheDGsduringtesting.Forthepurposeofthistesting,theDGsmustbestartedfromstandbyconditions, thatis,withtheenginecoolantandoilbeingcontinuously circulated andtemperature maintained consistent withmanufacturer recommendations forDG11andDG12.ForDG13,standbyconditions meanthatthelubeoilisheatedbythejacketwaterandcontinuously circulated through'a portionofthesystemasrecommended bythevendor.Enginejacketwaterisheatedbyanimmersion heaterandcirculates throughthesystembynaturalcirculation.

Note2isnotapplicable toDG13.ThereasonforNote2isthatperforming theSurveillance wouldremovearequiredoffsitecircuitfromservice,perturbtheelectrical distribution system,andchallenge plantsafetysystems.Creditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequatedocumentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction with-maintenance requiredtomaintainOPERABILITY orreliability.

(continued)

GRANDGULFB3.8-23LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

ACSources-OperatingB3.8.1SR3.8.1.12ThisSurveillance demonstrates thattheDGautomatically startsandachievestherequiredvoltageandfrequency withinthespecified time(10seconds)fromthedesignbasisactuation signal(LOCAsignal)andoperatesfor5minutes.The5minuteperiodprovidessufficient timetodemonstrate stability.

SR3.8.1.12.d ensuresthatemergency loadsareenergized fromtheoffsiteelectrical powersystemonanECCSsignalwithoutlossofoffsitepower.Therequirement toverifytheconnection andpowersupplyofpermanent andauto-connected loadsisintendedtosatisfactorily showtherelationship oftheseloadstotheloadinglogicforloadingontooffsitepower.Incertaincircumstances, manyoftheseloadscannotactuallybeconnected orloadedwithoutunduehardshiporpotential forundesired operation.

Forinstance, ECCSinjection valvesarenotdesiredtobestrokedopen,highpressureinjection systemsarenotcapableofbeingoperatedatfullflow,orRHRsystemsperforming adecayheatremovalfunctionarenotdesiredtoberealigned totheECCSmodeofoperation.

Inlieuofactualdemonstration oftheconnection andloadingoftheseloads,testingthatadequately showsthecapability oftheoffsitepowersystemtoperformthesefunctions isacceptable.

Thistestingmayincludeanyseriesofsequential, overlapping, ortotalstepssothattheentireconnection andloadingsequenceisverified.

TheFrequency of24monthstakesintoconsideration plantconditions requiredtoperformtheSurveillance andisintendedtobeconsistent withtheexpectedfuelcyclelengths.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

Testingperformed forthisSRisnormallyconducted withtheDCbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

(continued)

GRANDGULFB3.8-24LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.13(continued) minorproblemsthatarenotimmediately detrimental toemergency operation oftheDG.The24monthFrequency isbasedonengineering

judgment, takingintoconsideration plantconditions requiredtoperformtheSurveillance, andisintendedtobeconsistent withexpectedfuelcyclelengths.Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

(continued)

GRANDGULFB3.8-25aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.14(continued)0.9.Thispowerfactorischosentoberepresentative oftheactualdesignbasisinductive loadingthattheDGcouldexperience.

Duringthetestthegenerator voltageandfrequency is4160+/-416voltsand58.8Hzand63Hzwithin10secondsafterthestartsignalandthesteadystategenerator voltageandfrequency ismaintained within4160+/-416voltsand60+/-1.2Hzforthedurationofthetest.The24monthFrequency isconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3)takesintoconsideration plantconditions requiredtoperformtheSurveillance; andisintendedtobeconsistent withexpectedfuelcyclelengths.ThisSurveillance ismodifiedbythreeNotes.Note1statesthatmomentary transients duetochangingbusloadsdonotinvalidate thistest.TheDG11and12loadbandisprovidedtoavoidroutineoverloading oftheTDIDG.Routineoverloading mayresultinmorefrequentteardowninspections inaccordance withvendorrecommendations inordertomaintainDGOPERABILITY.

Similarly, momentary powerfactortransients abovethelimitdonotinvalidate thetest.Note2stipulates thatcreditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequatedocumentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction withmaintenance requiredtomaintainOPERABILITY orreliability.

Note3ensuresthattheDGistestedunderloadconditions thatareasclosetodesignbasisconditions aspossible.

Whensynchronized withoffsitepower,testingshouldbeperformed atapowerfactorof0.9forDG11andDG13and0.89forDG12.Thesepowerfactorsarerepresentative of(continued)

GRANDGULFB3.8-27LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.15(continued) andfrequency within10seconds.The10secondtimeisderivedfromtherequirements oftheaccidentanalysistorespondtoadesignbasislargebreakLOCA.The24monthFrequency isconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3).ThisSRhasbeenmodifiedbytwoNotes.Note1ensuresthatthetestisperformed withthedieselsufficiently hot.Therequirement thatthedieselhasoperatedforatleast1houratfullloadconditions oruntiloperating temperatures stabilized priortoperformance ofthisSurveillance isbasedonmanufacturer recommendations forachieving hotconditions.

TheDG11and12loadbandisprovidedtoavoidroutineoverloading oftheTDIDG.Routineoverloads mayresultinmorefrequentteardowninspections inaccordance withvendorrecommendations inordertomaintainDGOPERABILITY.

Momentary transients duetochangingbusloadsdonotinvalidate thistest.Note2allowsallDGstarts*tobeprecededbyanengineprelubeperiodtominimizewearandtearonthedieselduringtesting.SR3.8.1.16AsrequiredbyRegulatory Guide1.9(Ref.3)thisSurveillance ensuresthatthemanualsynchronization andloadtransferfromtheDCtoeachrequiredoffsitesourcecanbemadeandthattheDGcanbereturnedto loadstatuswhenoffsitepowerisrestored.

Italsoensuresthattheundervoltage logicisresettoallowtheDGtoreloadifasubsequent lossofoffsitepoweroccurs.TheDGisconsidered tobeinready-to-load statuswhentheDGisatratedspeedandvoltage,theoutputbreakerisopenandcanreceiveanauto-close signalonbusundervoltage, andtheloadsequencelogicisreset.TheFrequency of24monthsisconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3)andtakesintoconsideration plantconditions requiredtoperformtheSurveillance.

Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related (continued)

• GRANDGULFB3.8-28LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.17(continued)

The24monthFrequency isconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3)takesintoconsideration plantconditions requiredtoperformtheSurveillance; andisintendedtobeconsistent withexpectedfuelcyclelengths.Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related distribution subsystem) connected tooneoffsitesource,whiletheremaining safety-related systemsarealignedtoanotheroffsitesource.Thisminimizes thepossibility ofcommoncausefailuresresulting fromoffsite/grid voltageperturbations.

Creditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequatedocumentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction withmaintenance requiredtomaintainOPERABILITY orreliability.

SR3.8.1.18Underaccidentconditions, loadsaresequentially connected tothebusbytheloadsequencing panel.Thesequencing logiccontrolsthepermissive andstartingsignalstomotorbreakerstopreventoverloading ofthebuspowersuppliesduetohighmotorstartingcurrents.

The10%loadsequencetimeintervaltolerance ensuresthatsufficient timeexistsforthebuspowersuppliestorestorefrequency andvoltagepriortoapplyingthenextloadandthatsafetyanalysisassumptions regarding ESFequipment timedelaysarenotviolated.

Reference 2

asummaryoftheautomatic loadingofESFbuses.(continued)

GRANDGULFB3.8-30LBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.18(continued)

TheFrequency of24monthsisconsistent withtherecommendations ofRegulatory Guide1.9(Ref.3)takesintoconsideration plantconditions requiredtoperformtheSurveillance; andisintendedtobeconsistent withexpectedfuelcyclelengths.(continued)

GRANDGULF83.8-30aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS ACSources-OperatingB3.8.1SR3.8.1.18(continued)

ThisSRismodifiedbyaNote.ThereasonfortheNote;sthatperforming theSurveillance duringtheseMODESwouldchallenge plantsafetysystems.Creditmaybetakenforunplanned eventsthatsatisfythisSR.Examplesofunplanned eventsmayinclude:1)Unexpected operational eventswhichcausetheequipment toperformthefunctionspecified bythisSurveillance, forwhichadequate'documentation oftherequiredperformance isavailable; and2)Postmaintenance testingthatrequiresperformance ofthisSurveillance inordertorestorethecomponent toOPERABLE, providedthemaintenance wasrequired, orperformed inconjunction withmaintenance requiredtomaintainOPERABILITY orreliability.

SR3.8.1.19IntheeventofaDBAcoincident withalossofoffsitepower,theDGsarerequiredtosupplythenecessary powertoESFsystemssothatthefuel,RCS,andcontainment designlimitsarenotexceeded.

ThisSurveillance demonstrates theDGoperation, asdiscussed intheBasesforSR3.8.1.11, duringalossofoffsitepoweractuation testsignalinconjunction withanECCSinitiation signal.ForthepurposesofthisSurveillance theDG13autoconnected emergency loadsareverifiedtobeenergized ins20seconds.Inlieuofactualdemonstration ofconnection andloadingofloads,testingthatadequately showsthecapability oftheDGsystemtoperformthesefunctions isacceptable.

Thistestingmayincludeanyseriesofsequential, overlapping, ortotalstepssothattheentireconnection andloadingsequenceisverified.

TheFrequency of24monthstakesintoconsideration plantconditions requiredtoperformtheSurveillance andisintendedtobeconsistent withanexpectedfuelcyclelengthof24months.Testingperformed forthisSRisnormallyconducted withtheDGbeingtested(andtheassociated safety-related (continued)

GRANDGULFB3.8-31LBDCR13043 BASESSURVEILLANCE REQUIREMENTS DCSources-OperatingB3.8.4SR3.8.4.3(continued)

The24monthFrequency oftheSurveillance isbasedonengineering judgement, takingintoconsideration thedesiredunitconditions toperformtheSurveillance.

Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

(continued)

GRANDGULFB3.8-56aLBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

DCSources-OperatingB3.8.4SR3.8.4.4andSR3.8.4.5Visualinspection andresistance measurements ofcell,inter-rack, inter-tier, andterminalconnections providesanindication ofphysicaldamageorabnormaldeterioration thatcouldindicatedegradedbatterycondition.

Theanti-corrosion materialisusedtoensuregoodelectrical connections andtoreduceterminaldeterioration.

Thevisualinspection forcorrosion isnotintendedtorequireremovalofandinspection undereachterminalconnection.

Theremovalofvisiblecorrosion isapreventive maintenance SR.Thepresenceofvisiblecorrosion doesnotnecessarily represent afailureofthisSR,providedvisiblecorrosion isremovedduringperformance ofthisSurveillance.

ForthepurposesofthisSRoxidation isnotconsidered corrosion providedtheresistance oftheconnection(s) iswithinlimits.The24monthFrequency oftheSurveillance isbasedonengineering judgement, takingintoconsideration thedesiredunitconditions toperformtheSurveillance.

Operating experience hasshownthatthesecomponents usuallypasstheSRwhenperformed atthe24monthFrequency.

Therefore, theFrequency wasconcluded tobeacceptable fromareliability standpoint.

SR3.8.4.6Batterychargercapability requirements arebasedonthedesigncapacityofthechargers(Ref.4).According toRegulatory Guide1.32(Ref.9),thebatterychargersupplyisrequiredtobebasedonthelargestcombineddemandsofthevarioussteadystateloadsandthechargingcapacitytorestorethebatteryfromthedesignminimumchargestatetothefullychargedstate,irrespective ofthestatusoftheunitduringthesedemandoccurrences.

Theminimumrequiredamperesanddurationensurethattheserequirements canbesatisfied.

TheSurveillance Frequency isacceptable, giventheunitconditions requiredtoperformthetestandtheotheradministrative controlsexistingtoensureadequatechargerperformance duringthese24monthintervals.

Inaddition, thisFrequency isintendedtobeconsistent withexpectedfuelcyclelengths.(continued)

GRANDGULFB3.8-57LBDCR13043 BASESSURVEILLANCE REQUIREMENTS (continued)

DCSources-OperatingB3.8.4SR3.8.4.7Abatteryservicetestisaspecialtestofthebattery's capability, asfound,tosatisfythedesignrequirements (batterydutycycle)oftheDCelectrical powersystem.Thedischarge rateandtestlength(4hoursforDivision1andDivision2and2hoursforDivision3)correspond tothedesigndutycyclerequirements asspecified inReference 4.TheSurveillance Frequency of24monthsisconsistent withtherecommendations ofRegulatory Guide1.32(Ref.9)andRegulatory Guide1.129(Ref.10),whichstatethatthebatteryservicetestshouldbeperformed duringrefueling operations oratsomeotheroutage,withintervals betweentestsnottoexceed24months.ThisSRismodifiedbytwoNotes.Note1allowstheonceper60monthsperformance ofSR3.8.4.8inlieuofSR3.8.4.7.Thissubstitution isacceptable becauseSR3.8.4.8represents amoreseveretestofbatterycapacitythanSR3.8.4.7.ThereasonforNote2isthatperforming theSurveillance wouldremovearequiredDCelectrical powersubsystem fromservice,perturbtheelectrical distribution system,andchallenge safetysystems.TheDivision3testmaybeperformed inMODE1,2,or3inconjunction withHPCSsystemoutages.Creditmaybetakenforunplanned eventsthatsatisfytheSurveillance.

SR3.8.4.8Abatteryperformance testisatestofconstantcurrentcapacityofabattery,normallydoneintheasfoundcondition, afterhavingbeeninservice,todetectanychangeinthecapacitydetermined bytheacceptance test.Thetestisintendedtodetermine overallbatterydegradation duetoageandusage.Theacceptance criteriaforthisSurveillance isconsistent withIEEE-450(Ref.8)andIEEE-485(Ref.11).Thesereferences recommend thatthebatterybereplacedifitscapacityisbelow80%ofthemanufacturer's rating.Acapacityof80%showsthatthebatteryrateofdeterioration isincreasing, evenifthereisamplecapacitytomeettheloadrequirements.

(continued)

GRANDGULFB3.8-58LBDCR13043I