ML13364A061

Fermi (Test Answer Key) 2013 ILO NRC - SRO

ML13364A061
Person / Time
Site:	Fermi
Issue date:	09/09/2013
From:	Division of Reactor Safety III
To:	Detroit Edison, Co
Carl Moore
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ML11355A016	List: ML13364A056 ML13364A057 ML13364A061
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EXAMINATIONANSWERKEY2013ILONRC-SRO 1ID:S76Points:1.00Theplantisoperatingatratedpowerwithallsystemsfunctioningnormallywhenthefollowingindicationsoccur:9D23,DIVI4160VESS64BBKRTRIPPED9D22,DIVIBUSVOLTAGELOWTRIPPEDindicationonBus64BPosB6TRIPPEDindicationonBus64BPosB8EDG11NotrunningZerocurrentonESFBus64BX-Y-ZPhaseAmperesMeter(1)Whateventhasoccurred,and(2)whatactionmusttheSROdirect?A.(1)FailureofSST64(2)Perform20.300.64B,LossofBus64B.B.(1)FailureofBus64B(2)Perform20.300.64B,LossofBus64B.C.(1)LossofSST64withaFailureofEDG11(2)Perform20.307.01,EmergencyDieselGeneratorFailure.D.(1)LossofBus64BwithaFailureofEDG11(2)Perform20.307.01,EmergencyDieselGeneratorFailure.Answer:BAnswerExplanationIfBus64BPosB6andB8areopen,thisisanindicationofabusfault.TheEDGisdesignednottostartonabusfault.Thecorrectactionistoperform20.300.64B.A&C.ThisisplausiblebecausethezerocurrentandvoltagereadingswouldbecorrectindicationsofSST64failure.D.ThisisplausiblebecausetheexamineemaynotunderstandindicationsofabusfaultanddeterminethatEDG11failedtostart.ILOEXAMPage:1of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion1InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

2Difficulty:2.50SystemID:32666User-DefinedID:S76CrossReferenceNumber:NEWTopic:Lossof4160BusNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilitytodetermineand/orinterpretthefollowingastheyapplytoPARTIALORCOMPLETELOSSOFA.C.POWER:CauseofpartialorcompletelossofA.C.powerQuestion1Table-ItemLinksPlantProcedures20.300.64BNUREG1123KACatalogRev.2295003AA2.013.4/3.7CauseofpartialorcompletelossofA.C.powerILOEXAMPage:2of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 2ID:S77Points:1.00Whichofthefollowingis(1)theMINIMUMspecificgravitythatsatisfiestheTechnicalSpecificationrequirementfortheDivisionIandDivisionIIbatteriesand(2)whatactionisrequiredifthoseconditionsarenotmet?(SeeattachedTS3.8.6)(2)Verifypilotcellselectrolytelevelisabovethetopoftheplatesandnotoverflowing,andfloatvoltagesare>2.07VwithinONEhour.B.(1)>1.190foreachconnectedcellANDaverageofallconnectedcells>1.200(2)DeclaretheaffectedbatteryinoperableIMMEDIATELY.(2)Verifypilotcellselectrolytelevelisabovethetopoftheplatesandnotoverflowing,andfloatvoltagesare>2.07VwithinONEhour.D.(1)Averageofalldesignatedpilotcells(2)DeclaretheaffectedbatteryinoperableIMMEDIATELY.Answer:CAnswerExplanationtakeistoverifyelectrolytelevelsandvoltagesofpilotcellswithinCategoryCvalueswithin1hour.A.Theactioniswrongbecauseitisthewrongentrycondition.Distractorisplausiblebecauseitistherightactionfortheproperentryconditions.B.Theactionsareforifactiontimenotmet,temperaturenotwithinlimitsornotwithinCategoryCvalues.Distractorisplausiblebecauseyouneedbothconditionstoenterthecondition.D.Theactioniswrongbecauseitisthewrongentrycondition.Distractorisplausiblebecauseitistherightactionfortheproperentryconditions.ILOEXAMPage:3of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion2InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

8Difficulty:4.00SystemID:32626User-DefinedID:S77CrossReferenceNumber:NEWTopic:ESFBatteryMinimumGravitiesNumField1:LOKLNumField2:10CFR55.43(b)2TextField:ILO2013mcComments:KA-PartialorTotalLossofDCPwr-Abilitytorecognizesystemparametersthatareentry-levelconditionsforTechnicalSpecifications.ProvideTechSpec3.8.6includingtablestocandidatesQuestion2Table-ItemLinksNUREG1123KACatalogRev.2G2.2.423.9/4.6Abilitytorecognizesystemparametersthatareentry-levelconditionsforTechnicalSpecifications295004PartialorCompleteLossofD.C.PowerTechnicalSpecifications3.8.6BatteryCellParametersILOEXAMPage:4of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 3ID:S78Points:1.00Themainturbineisrunningwithaloadof400MWeduringaplantstartup.Reactorpoweriscurrently34%RTP.12:10Annunciator4D13,MAINTURBINEVIBHIGH,alarms.12:11TheBOPoperatorreportsthatmainturbinebearing#9isreading7mils.Bearings5,6,8and10arereadingapproximately4mils.12:12TheCRSandSMdecidetolowerturbineloadby50MWeper22.000.03,POWEROPERATION25%TO100%TO25%.12:15Annunciator4D9,MAINTURBINEVIBHIGH-HIGH,alarms.12:15TheBOPoperatorreportsthatmainturbinebearing#9isreading11mils.Bearings8and10arereading7mils.Whichaction(s)shouldbedirectedbasedontheseindications?A.Continuetolowerturbineloadper20.000.03,andmonitorbearingvibrations.B.Scramthereactorandtripthemainturbine,andenter20.000.21,REACTORSCRAM.C.ContactsystemengineeringforadditionalrecommendationsandtoassistinthemitigationofcausesperARP4D9.D.Fullyunloadtheturbine,andshutdowntohotstandbyinaccordancewith20.000.04,PLANTSHUTDOWNFROM25%POWER.Answer:BAnswerExplanationTurbinetripsetpointhasbeenexceeded(10milswithadjacentbearingatorabove6mils).Theoperatormusttriptheturbinetopreventdamage.A.Plausiblebecauseloweringturbineloadwouldbearecommendedactionifthetripsetpointhadnotbeenexceeded.C.Plausiblebecausethesystemengineercouldofferknowledgeandexpertisetomitigatethesituation.D.Plausiblebecauseitwouldbeaconservativeactionhadaturbinetripsetpointnotbeenexceeded.ILOEXAMPage:5of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion3InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

4Difficulty:3.00SystemID:32627User-DefinedID:S78CrossReferenceNumber:NEWTopic:MTVibrationNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilitytodetermineand/orinterpretthefollowingastheyapplytoMAINTURBINEGENERATORTRIP:TurbinevibrationQuestion3Table-ItemLinksPlantProcedures20.109.0123.10904D009NUREG1123KACatalogRev.2295005AA2.022.4/2.7TurbinevibrationILOEXAMPage:6of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 4ID:S79Points:1.00Disregardingtheoperabilityoftheindividualreservoirs,whichONEofthefollowingsetsofparametersidentifiesaconfigurationforwhichtheUltimateHeatSink(UHS)iscapableofmeetingitsDESIGNOBJECTIVE(FUNCTION)ifthereservoirsarecapableofbeingcross-connected?(ProvideT.S.3.7.2)Div1ReservoirDiv2ReservoirAvgTempLevelAvgTempLevelA.81°F26ft76°F24.5ftB.82°F27ft79°F23ftC.79°F26ft80°F22ftD.78°F24.5ft76°F24.5ftAnswer:AAnswerExplanationCombinedAveragetempis78.5°F,combinedaveragelevel25.25feet.TheOPERABILITY(TS3.7.2)oftheUHSisbasedontheOPERABILITYofeachRHRreservoir.TobeOPERABLE,aRHRreservoirmusthavesufficientcapacitytoacceptthedesignheatloadfromthesupportedequipment.Toaccomplishthiseachreservoirwatervolumemustbegreaterthan2,990,000gallons(anindicationof25feet)andthewatertemperaturemustbe80°F.Inaddition,theassociatedcoolingtowerandbothfansmustbeOPERABLE.SincetheUHSreliesonthecombinedheatcapacityofthetwoRHRreservoirstoaccomplishitsdesignobjectives,UHSOPERABILITYmustalsobebasedonthetworeservoirshavingacombinedwatervolumeof5,980,000gallonsandacombinedaveragewatertemperatureof80F.Furthermore,thetworeservoirsmustbecross-connected,orcapableofbeingcross-connected.Alldistractorsareplausiblebecausesomeoftheparametersmeetthesurveillancerequirements.Theexamineewillhavetonotonlyknowtherequirements,butalsounderstandthatBOTHreservoirsarerequiredtomeetthedesignobjective.Theymustalsoknowthattheycanuseanaverageofthetwo(required).Thecorrectanswerforthisquestionhasoneparameterperreservoiroutofspecification.Itisonlywhenyouaveragethemthatyourealizetheymeetthedesigncriteria.B.isincorrectbecauseaveragetemperatureis>80°F.C&D.areincorrectbecausecombinedreservoirlevelaverageis<25feet.ILOEXAMPage:7of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion4InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:3.00SystemID:32686User-DefinedID:S79CrossReferenceNumber:NEWTopic:UltimateHeatSinkNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-PartialorTotalLossofCCW:KnowledgeofthebasesinTechnicalSpecificationsforlimitingconditionsforoperationsandsafetylimits.Question4Table-ItemLinksNUREG1123KACatalogRev.2G2.2.253.2/4.2KnowledgeofbasesinTechnicalSpecificationsforlimitingconditionsforoperationsandsafetylimits295018PartialorCompleteLossofComponentCoolingWaterTechnicalSpecifications3.7.2EmergencyEquipmentCoolingWater(EECW)/EmergencyEquipmentServiceWater(EESW)SystemandUltimateHeatSink(UHS)ILOEXAMPage:8of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 5ID:S80Points:1.00Theplantwasoperatingatratedpowerwhenapartiallossofdrywellcoolingconditionoccurred.3D81,PrimaryContainmentPressureHigh/Lowisalarming.Primarycontainmentpressureisconfirmedat1.52psigincreasingat0.01psigevery2minutes.Drywelltemperatureis137°Fandrising0.5°Fevery10minutes.Whataction(s)shouldtheCRSdirect?A.LowerdrywellpressureinaccordancewithEOP29.100.01,Sheet2,PrimaryContainmentControl.B.LowerdrywelltemperatureinaccordancewithEOP29.100.01,Sheet2,PrimaryContainmentControl.C.Lowerdrywellpressureinaccordancewith23.406,PrimaryContainmentNitrogenandPurgesystemusingRBHVAC.D.Lowerdrywellpressureinaccordancewith23.425.01,PrimaryContainmentProceduresusingStandbyGasTreatmentSystem.Answer:CAnswerExplanationDrywelltemperatureandpressuresareelevated,buttheyarenotatEOPentryconditions.ThecorrectactionistolowerdrywellpressureusingeitherSBGTSorRBHVACinaccordancewith23.406asdirectedbyARP3D81.A.isplausiblebecausedrywellpressureishigh,butnothighenoughtoentertheEOPs.B.isplausiblebecausedrywelltemperatureishigh,butnothighenoughtoentertheEOPs.Also,thehighpressureconditionwascausedbyapartiallossofdrywellcooling.D.isplausiblebecauseloweringpressurebyventingthroughSGTSiswarranted,howeverthisisthewrongprocedure.ILOEXAMPage:9of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion5InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:3.00SystemID:32966User-DefinedID:S80CrossReferenceNumber:NEWTopic:HighDrywellPressureNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-HighDrywellPressure:AbilitytoperformspecificsystemandintegratedplantproceduresduringdifferentmodesofplantoperationQuestion5Table-ItemLinksPlantProcedures03D08123.406NUREG1123KACatalogRev.2G2.1.234.3/4.4Abilitytoperformspecificsystemandintegratedplantproceduresduringdifferentmodesofplantoperation295024HighDrywellPressureILOEXAMPage:10of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 6ID:S81Points:1.00TheplanthasexperiencedanATWS.Reactorwaterlevelhasbeenintentionallyloweredinaccordancewith29.100.01Sheet1A,RPVControl-ATWS.Thefollowingconditionsexist:Reactorpoweris10%.One(1)SRVisstuckOPEN.RPVlevelis-28inchesandslowlyrising.RPVpressureis944psigandbeingmaintainedbytheMainTurbineBypassValves.Torustemperatureis167°Fandrising.Toruswaterlevelis+10inchesandsteady.Toruspressureis4.5psigandrisingslowly.SLCisinjecting.RCICisinjectingat500gpm.WhichONE(1)ofthefollowingdescribestheproperactionrequiredandwhy?(Seeattached29.100.01Sheet6curves.)A.EmergencyDepressurizeduetobeingintheunacceptableregionoftheHCLcurve.B.EmergencyDepressurizeduetoinabilitytomaintainRPVwaterlevelgreaterthan-25inches.C.ReduceRPVpressuretolessthan800psigusingMainTurbineBypassValvestoremainintheacceptableregionoftheHCLcurve.D.ReduceRPVpressuretolessthan360psigusingMainTurbineBypassValvestomaintainintheacceptableregionoftheSRVTPLL.Answer:CAnswerExplanationTorustemperatureisrisingandonly2°FawayfromenteringtheunacceptableregionoftheHCLcurve.FSP-OR2directsloweringRPVpressureifToruswatertempCANNOTbekept<HCL.B.isincorrectbecauseRPVWaterlevelis-28inchesandRISING.EDisonlyrequirediflevelcannotberestoredandmaintained.RCIC,CRDandSLCisraisingRPVwaterlevel.A.isincorrectbecausetheplantiscurrentlyintheacceptableregionoftheHCLcurve.D.isincorrectbecauseToruswaterlevelis3inchesbelowtheSRVTPLLandsteady.Reducingpressuretolessthan360psigatthistimeisnotwarranted.ILOEXAMPage:11of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion6InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:4.00SystemID:32706User-DefinedID:S81CrossReferenceNumber:NEWTopic:TorusWaterTemperatureNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilitytodetermineand/orinterpretthefollowingastheyapplytoSUPPRESSIONPOOLHIGHWATERTEMPERATURE:SuppressionpoolwatertemperatureProvideexamineeswith29.100.01sheet6CurvesOnly.Question6Table-ItemLinksPlantProcedures29.200.01SH129.100.01SH6NUREG1123KACatalogRev.2295026EA2.014.1*/4.2*SuppressionpoolwatertemperatureILOEXAMPage:12of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 7ID:S82Points:1.00Theplanthasexperiencedareactorscramduetoalossoffeedwater.Allcontrolrodshaveinserted.Thefollowingplantconditionsexist:SBFWhasbeenstartedandisinjectingat1200gpm.HPCIisrunningandinjectingat5200gpm.RCICisinStandby.StandbyGasTreatmentsystemisrunning.RWCUisinservice.Reactorwaterlevelis65inchesandrisingslowly.WhichONE(1)ofthefollowingdescribestheproperactionthatMUSTbetakenatthistime?A.IsolateRWCU,secureSBFW,andrestoreleveltothenormalbandusingHPCI.B.StartRCICmanually,andsecureHPCItocontrolthereactorwaterlevelascenttothenormalband.C.SecureHPCI,andrestorereactorwaterlevelusingSBFWandCRDtopreventaddingheattothesuppressionpool.D.IsolateRWCU,andstartRCICmanually.Continuetomonitorreactorwaterleveluntilthenormaloperatingbandisreached.Answer:DAnswerExplanationODE-4EnclosureApage2directstakingmanualactionswhenautomaticactionsfail.ThisquestionteststheabilityoftheSROtoanalyzeplantconditionsandmakedecisionsbasedonavailableplantprocedures.InthiscasetheSROmustfirstrecognizePCISfailureandfailureofRCICtoinitiate.TheymustthendirectactioninaccordancewiththeODE.IsolatingRWCUistheONLYactionthatMUSTbetaken.Theotheractionsarevalidbuttheyarewaterusestrategies.PlausibleDistractors:B.isincorrectbecausethereisnodirectiontosecureHPCIperprocedures.29.100.01,sheetoneallowsuseoftableonesystems.TheoperatorwoulddialbackHPCIto0gpminsteadofsecuringtheturbine.ThereisnomentionofisolateRWCU,whichisarequiredaction.Thisisplausiblebecauseitdiscussesawaterusestrategy.C.isincorrectbecausethereisnomentionofRWCUorRCIC.Theseareplausiblebecausetheydiscussstrategyforcontroloftheplant.A.isincorrectbecausethereisnomentionofRCIC.Theseareplausiblebecausetheydiscussstrategyforcontroloftheplant.ILOEXAMPage:13of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion7InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

4Difficulty:3.00SystemID:32806User-DefinedID:S82CrossReferenceNumber:NEWTopic:Auto/ManualactionsNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-ReactorLowWaterLevel:Knowledgeofabnormalconditionprocedures.Question7Table-ItemLinksPlantProcedures23.427ODE-04OrganizationalImprovementNUREG1123KACatalogRev.2G2.4.114.0/4.2Knowledgeofabnormalconditionprocedures295031ReactorLowWaterLevelILOEXAMPage:14of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 8ID:S83Points:1.00TheplantisoperatingatratedpowerwhenSRVEfailsopen.AttemptstocloseSRVEinaccordancewith20.000.25,FailedSafetyReliefValve,havefailed.TheP603operatorplacesthemodeswitchinshutdownondirectionfromtheCRS,andsomecontrolrodsfailtoinsert.Thefollowingconditionscurrentlyexist:Reactorpoweris30%.Torustemperatureis109°Fandrisingat2°F/min.WhichONE(1)ofthefollowingdescribestheproperactiontobetakenANDthebasisforthataction?(Seeattached29.100.01Sheet6curves.)A.PlaceRHRinTorusCoolingtopreventexceedingPressureSuppressionPressure(PSP).B.InjectSLCtoensureHotShutdownBoronWeightisinjectedbeforeSuppressionPooltemperatureexceedstheHeatCapacityLimit(HCL).C.ManuallyopenadditionalSRVstoensureRPVpressureremainswithintheHeatCapacityLimit(HCL).D.EmergencyDepressurizetoensuretheSuppressionPoolcanaccommodatetheenergystoredintheReactorVessel.Answer:BAnswerExplanationB.Theplantisabouttoexceed110°F,whichistheBIITlimitforthesituation.TheCRSmustdirectinjectionofSLCtoensureHotShutdownBoronWeightisinjectedbeforeSuppressionPooltemperatureexceedstheHeatCapacityTemperatureLimit.PlausibleDistractors:A.isincorrectbecausetoruscoolingdoesnotpreventexceedingthePSPcurve.ThePSPisafunctionofsuppressionpoolwaterlevel,nottemperature.ThisisplausiblebecauseRHRshouldbeplacedinTorusCoolinginaccordancewith20.000.25.C.isincorrectbecauseopeningadditionalSRVswouldaddheattothetorusandtheBIITisthelimitingcurveatthemoment.TheconditionsarenotanywhereneartheHCL.ThisisplausiblebecauseyouareallowedtoopenSRVsmanuallymaintainRPVpressurebelowtheHCL.D.isincorrectbecausetheconditionsdonotwarrantanEDduringanATWS.Therewouldhavetobealevelcontrolproblem.Itisplausiblebasedonthebasisstatementof'ToensurethesuppressionpoolcanaccommodatetheenergystoredintheReactorVessel'.ILOEXAMPage:15of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion8InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:2.00SystemID:32826User-DefinedID:S83CrossReferenceNumber:NEWTopic:HighTorusTemperatureActionsNumField1:LOKHNumField2:10CFR55.43(b)2TextField:ILO2013mcComments:KA-HighSuppressionPoolTemp:KnowledgeofthespecificbasesforEOPs.Providetheexamineewith29.100.01Sheet6(curvesonly)forthisquestion.Question8Table-ItemLinksPlantProceduresBWROGEPGAppBNUREG1123KACatalogRev.2G2.4.183.3/4.0KnowledgeofthespecificbasesforEOPs295013HighSuppressionPoolWaterTemperatureILOEXAMPage:16of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO 9ID:S84Points:1.00Areactorscramhasoccurred.AnRPISfailurehaspreventedtheP603Operatorfromverifyingallcontrolrodshaveinserted.APRMsarereadingdownscale.TheIRMshavebeeninsertedandarereadingbetweenRange4and5andlowering.RPVPressureis950psigandbeingmaintainedbyMainTurbineBypassValves.SLChasnotbeeninjected.(1)Isthereactorshutdownunderallconditions,and(2)whatactionsshouldbetakeninaccordancewithplantprocedures?A.(1)NO(2)PerformFSQ1-8..B.(1)NO(2)Perform20.000.21,REACTORSCRAM.C.(1)YES(2)Exit29.100.01A,RPVCONTROL-ATWS,andperform29.100.01Sheet1,RPVCONTROLD.(1)YES(2)ExitRxPowerlegof29.100.01A,RPVCONTROL-ATWS,andperform20.000.21,REACTORSCRAM.Answer:BAnswerExplanationPerEPGs,positiveconfirmationthatthereactorwillremainshutdownunderallconditionswithoutboronisbestobtainedbydeterminingthatnocontrolrodiswithdrawnbeyondtheMaximumSubcriticalBankedWithdrawalPosition.RPIShasfailedthereforethisisnotpossible.ThereactorisbelowRange7ontheIRMsandtrendingdownindicatingthereactorisshutdown.FSQoverrideone(1)statesthatifthereactorisshutdown,exittotheSCRAMAOP.A.isincorrectbecausetheCRSshouldexittheATWSEOP.ThisanswerisplausiblebecausetheexamineemaydeterminethecorrectactionistocontinueonandinjectBoronbecausethereactorwillnotremainshutdownunderallconditionsC.isincorrectbecausePerEPGs,positiveconfirmationthatthereactorwillremainshutdownunderallconditionswithoutboronisbestobtainedbydeterminingthatnocontrolrodiswithdrawnbeyondtheMaximumSubcriticalBankedWithdrawalPosition.RPIShasfailedthereforethisisnotpossible.Theexamineemaydeterminethepowerindicationsmeanthereactorwillremainshutdownunderallconditions.D.isincorrectbecauseisincorrectbecausePerEPGs,positiveconfirmationthatthereactorwillremainshutdownunderallconditionswithoutboronisbestobtainedbydeterminingthatnocontrolrodiswithdrawnbeyondtheMaximumSubcriticalBankedWithdrawalPosition.RPIShasfailedthereforethisisnotpossible.Theexamineemaydeterminethepowerindicationsmeanthereactorwillremainshutdownunderallconditions.TheanswerisplausiblebecausetheexamineemaydeterminethatexitingtheATWSEOPandenteringthenormalRPVControlEOPisthecorrectcourseofaction.ILOEXAMPage:17of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion9InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:2.00SystemID:32726User-DefinedID:S84CrossReferenceNumber:NEWTopic:FailuretoSCRAM-RPISfailureNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilitytodetermineand/orinterpretthefollowingastheyapplytoINCOMPLETESCRAM:ReactorpowerQuestion9Table-ItemLinksPlantProcedures29.100.01SH629.100.01SH1ABWROGEPGAppBNUREG1123KACatalogRev.2295015AA2.014.1*/4.3*ReactorpowerILOEXAMPage:18of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO10ID:S85Points:1.00TheplantisinMode1atratedpowerwhen16D5,REAC/AUXBUILDINGBSMT/SUBBSMTHIGHRADN,alarms.TheoperatorsenttoRRH11-P849confirmsChannel11,RBSBHPCIRoom,alarmlightisONandindicates780mr/hr.Basedonthisreport,theSROshouldimmediately_______________________________________.A.directtheModeSwitchplacedinShutdown,andenter20.000.02,"AbnormalReleaseofRadioactiveMaterial"B.commenceanormalreactorshutdown,andenter20.000.02,"AbnormalReleaseofRadioactiveMaterial"C.directtheModeSwitchplacedinShutdown,andenter29.100.01SH5,"SecondaryContainmentandRadRelease"D.enter20.000.02,"AbnormalReleaseofRadioactiveMaterial,"andenter29.100.01SH5,"SecondaryContainmentandRadRelease"Answer:DAnswerExplanationOncethereadingisdeterminedtobevalid,theSROshouldimmediatelyentertheAOPandEOP.Thereisnoverificationofaprimarysystemdischargingintosecondarycontainment,andthereadingisbelowMaxSafe(5R/hr),thereforeashutdownisnotrequiredatthistime(eitherbyGOPormodeswitch).A.isplausiblebecausethisactionwouldberequiredperEOPsiftwoormoreareasexceedMaxSafeandaprimarysystemwasdischargingintosecondarycontainment.TheexamineemayjustifyaprimarysystemdischargingintosecondarycontainmentbasedonthehighradreadingintheHPCIroom.B.TheEOPsrequirethisactionifanyoneparameterexceedsitsmaxsafevalueintwoormoreareas.ThisisplausiblebecausetheEOPsdorequireashutdownbasedonhighradlevels.C.isplausiblebecausethisactionwouldberequiredperEOPsiftwoormoreareasexceedMaxSafeandaprimarysystemwasdischargingintosecondarycontainment.TheexamineemayjustifyaprimarysystemdischargingintosecondarycontainmentbasedonthehighradreadingintheHPCIroom.TheexamineemaydeterminethatentryintotheAOPisnotrequiredbecausetheplantmeetsEOPentryrequirements.ILOEXAMPage:19of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion10InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:3.00SystemID:32827User-DefinedID:S85CrossReferenceNumber:NEWTopic:SecondaryContainmentHiRadNumField1:LOKHNumField2:10CFR55.43(b)4/5TextField:ILO2013mcComments:KA-SecondaryContainmentVentilationHighRadiation:Abilitytoevaluateplantperformanceandmakeoperationaljudgmentsbasedonoperatingcharacteristics,reactorbehavior,andinstrumentinterpretation.Question10Table-ItemLinksPlantProcedures16D0520.000.0229.100.01SH5NUREG1123KACatalogRev.2G2.1.74.4/4.7Abilitytoevaluateplantperformanceandmakeoperationaljudgmentsbasedonoperatingcharacteristics,reactorbehavior,andinstrumentinterpretation295034SecondaryContainmentVentilationHighRadiationILOEXAMPage:20of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO11ID:S86Points:1.00WhichONEofthefollowingplacestheplantinaonehourTechnicalSpecificationactionANDdescribesthecorrectbasesforthatTechnicalSpecification?A.PlantinMode3withAandCSRMsinoperable;topreventandmitigatepromptreactivityexcursionsduringrefuelingandlowpoweroperation.B.PlantisinMode2withSRMsAandBinoperableandIRMsonrange2;topreventandmitigatepromptreactivityexcursionsduringrefuelingandlowpoweroperation.C.PlantinMode3withAandCSRMsinoperable;topreventviolationofaSafetyLimitandafueldesignlimitthatmayresultfromasinglecontrolrodwithdrawalerrorevent.D.PlantisinMode2withSRMsAandBinoperableandIRMsonrange2;topreventviolationofaSafetyLimitandafueldesignlimitthatmayresultfromasinglecontrolrodwithdrawalerrorevent.Answer:BAnswerExplanationPerTS3.3.1.2,threechannelsofSRMsarerequired.Onlytwoareoperable.ThisisthecorrectbasesfromtheTSbasesdocument.A.isplausiblebecausethereisamode3requirement,butonly2SRMsarerequired.Thisisthecorrectbases.C.isplausiblebecausethereisamode3requirement,butonly2SRMsarerequired.Thisisthebasesstatementforcontrolrodblockinstrumentation.D.isplausiblebecausethisisthebasesstatementforcontrolrodblockinstrumentation.Question11InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:4.00SystemID:31827User-DefinedID:S86CrossReferenceNumber:NEWTopic:SRMTSActionsNumField1:LOKHNumField2:10CFR55.43(b)2TextField:ILO2013mcComments:KA-SourceRangeMonitor-KnowledgeoflessthanorequaltoonehourTechnicalSpecificationactionstatementsforsystemsILOEXAMPage:21of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion11Table-ItemLinksNUREG1123KACatalogRev.2G2.2.393.9/4.5Knowledgeoflessthanonehourtechnicalspecificationactionstatementsforsystems215004SRMSystemTechnicalSpecifications3.3.1.2SourceRangeMonitor(SRM)InstrumentationILOEXAMPage:22of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO12ID:S87Points:1.00TheplanthasexperiencedasmallbreakLOCA.Thereactoriscurrentlyshutdown.Reactorpressureis944psigandbeingcontrolledbythemainturbinebypassvalves.Reactorwaterlevelis194inchesandbeingmaintainedbyRCICinjectingat250gpm.AforeignobjectbecomeslodgedintheoilpathwaytotheactuatorforE51-F044,RCICTurbineGovernorControlValve.Howdoestheplantrespond,andwhatactionmustbetaken(ifany)?A.ReactorwaterleveldecreasestoLevel3.StartandinjectwithSBFW.B.Reactorwaterlevelincreasesto>214inches,andRCICshutsdown.VerifyE5150-F045closed.C.ReactorwaterleveldecreasestoLevel2,andHPCIautomaticallystarts.ThrottleHPCItomaintainlevelinband.D.Reactorwaterlevelincreasesto>214inches.RCICmustbetrippedmanuallytopreventfillingtheRPVsolid.Answer:BAnswerExplanationWithcontroloilpressureavailable,theTurbineControlValve(F044)canbethrottledbackfromitsnormallyfullopenposition.ThisinturncontrolstheamountofsteamdeliveredtotheRCICTurbinewhichcontrolsturbinespeed.AlossofcontroloilwillresultintheF044goingfullOPEN.TheSROwouldhavetoenter20.000.23,HIGHRPVWATERLEVEL.ActionC,withRPVwaterlevel>214inches,istoverifyHPCItripped,E5150-F045closedandN2103-F001closed.A.isincorrectbecauseleveldoesnotlower.PlausiblebecausetheactionisrequiredbyEOPsheet1,IAWtable1sources.C.isincorrectbecauseleveldoesnotlower.HPCIwillnotstart.PlausiblebecauseHPCIisatable1sourceonEOPsheet1.Thestatementsaystomaintainlevelwhichwouldbetothrottleinjectingsourcestomaintainlevelinband.D.isincorrectbecauseE5150-F045isthevalvethatclosesonL8.ThetripthrottlevalvedoesnottriptoallowRCICto'restart'atL2tocontrollevel.ThisisaplausibledistractorbecauseE5150-F044tripsonothersignals.ILOEXAMPage:23of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion12InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

4Difficulty:3.00SystemID:31828User-DefinedID:S87CrossReferenceNumber:NEWTopic:RCICActionsNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilityto(a)predicttheimpactsofthefollowingontheREACTORCOREISOLATIONCOOLINGSYSTEM(RCIC);and(b)basedonthosepredictions,useprocedurestocorrect,control,ormitigatetheconsequencesofthoseabnormalconditionsoroperations:LossoflubeoilQuestion12Table-ItemLinksPlantProcedures23.20629.100.01SH120.000.23NUREG1123KACatalogRev.2217000A2.073.1/3.1LossoflubeoilILOEXAMPage:24of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO13ID:S88Points:1.00SystemOperatingProcedure23.201,SafetyReliefValvesandAutomaticDepressurizationSystem,includesaprecautionthatstates:3.6.2.1,SuppressionPoolAverageTemperature."WhatisthebasisforthislimitationonSuppressionPoolaveragetemperatureperTechnicalSpecifications?A.ToensureadequatecoolingofthecoreuponECCSinitiation.B.ToensureadequatenetpositivesuctionheadforRHRpumps.C.ToensurepeakprimarycontainmentpressuresandtemperaturesdonotexceedmaximumallowablevaluespostDBA.D.ToensurepeakprimarycontainmentpressuresandtemperaturesdonotexceedmaximumallowablevaluesduringanATWSevent.Answer:CAnswerExplanationPerTSBases:Alimitationonthesuppressionpoolaveragetemperatureisrequiredtoprovideassurancethatthecontainmentconditionsassumedforthesafetyanalysesaremet.ThislimitationsubsequentlyensuresthatpeakprimarycontainmentpressuresandtemperaturesdonotexceedmaximumallowablevaluesduringapostulatedDBAoranytransientresultinginheatupofthesuppressionpool.A.isincorrectbecausethetemperatureofthetoruscannotbehighenoughtobeineffectiveinmaintainingthecore'cool'.Itisplausiblebecausetheexamineemayconfusethebulktemperatureofthetoruswiththeabilitytoprovideadequatecorecooling.B.isincorrectbecausethisisbasedontheRHRNPSHlimitcurve.ThisisplausiblebecauseitispartlydeterminedbytorustemperatureD.isincorrectbecausealthoughthiseventwilladdalotofheattothesuppressionpool,itisnottheDBAthatthelimitisbasedonperTS.ItisplausiblebecauseitisoneofthemainreasonsforhavingSRVs.ILOEXAMPage:25of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion13InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:3.00SystemID:32746User-DefinedID:S88CrossReferenceNumber:NEWTopic:SRVPandLNumField1:LOKLNumField2:10CFR55.43(b)2TextField:ILO2013mcComments:KA-ADS:AbilitytoExplainandApplySystemLimitsandPrecautionsQuestion13Table-ItemLinksPlantProceduresTECHSPECS23.201BWROGEPGsVolume1NUREG1123KACatalogRev.2G2.1.323.8/4.0Abilitytoexplainandapplysystemlimitsandprecautions218000ADSILOEXAMPage:26of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO14ID:S89Points:1.00Thereactorisoperatingatratedpowerwhen1D61,SRVOPEN,alarms.Plantindicationsareasfollows:Drywellpressureis0.5psigandsteady.Torustemperatureis80°Fandsteady.GeneratorMWis1143MWeandsteady.TheoperatordispatchedtotheRelayRoomreportsSRVtailpipetemperatureindicationsarenormalexceptforSRV"C",whichisreading230°Fandsteady.(1)WhatisthestatusofSRV"C",and(2)whataction(s)shouldbetaken?A.(1)Open(2)Commencearapidpowerreductioninaccordancewith23.623,REACTORMANUALCONTROLSYSTEM.B.(1)Leaking(2)EvaluateplantshutdowntorepairSRVinaccordancewith22.000.03,POWEROPERATION25%TO100%TO25%.C.(1)Open(2)PlacetheModeSwitchinSHUTDOWN,andperform20.000.21,REACTORSCRAM.D.(1)Leaking(2)Commencearapidpowerreductioninaccordancewith23.623,REACTORMANUALCONTROLSYSTEM.Answer:BAnswerExplanationSRVtailpipetemperatureof230°Fandsteadyindicatesaveryslowlyrisingtemperature.Also,thetemperatureshouldread~370°FforastuckopenSRV.ARP1D61hasanotethatsaysGErecommendsloweringpressureto200psigtoreseatthevalve.Aplantshutdownwouldhavetooccurforthistohappen.PlausibleDistractors:A.isincorrectbecauseSRVtailpipetemperatureof230°Fandsteadyindicatesaveryslowlyrisingtemperature.Also,thetemperatureshouldread~370°FforastuckopenSRV.ThisisplausiblebecausetheSRVOPENalarmisin.TheexamineewillhavetodeterminethedifferencebetweenaleakingSRVandaStuckopenSRV.C.isincorrectbecauseSRVtailpipetemperatureof230°Fandsteadyindicatesaveryslowlyrisingtemperature.Also,thetemperatureshouldread~370°FforastuckopenSRV.ThisisplausiblebecausetheSRVOPENalarmisin.TheexamineewillhavetodeterminethedifferencebetweenaleakingSRVandaStuckopenSRV.TheoverridestatementintheAOPhastheoperatorplacethemodeswitchinSHUTDOWNifTorustemperaturereaches110°F,whichmakesthisdistractorplausible.D.isincorrectbecausethisactionistakenpertheAOPiftheSRVcannotbeclosed.TheSRVisnotOPEN;thereforethisisthewrongactiontotake.ItisplausiblebecausetheexamineemaydeterminethataleakingSRVisthesameasanOPENSRV.ILOEXAMPage:27of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion14InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:3.00SystemID:32766User-DefinedID:S89CrossReferenceNumber:NEWTopic:LeakingSRVNumField1:LOKHNumField2:10CFR55.41(b)5TextField:ILO2013mcComments:KA-Abilityto(a)predicttheimpactsofthefollowingontheRELIEF/SAFETYVALVES;and(b)basedonthosepredictions,useprocedurestocorrect,control,ormitigatetheconsequencesofthoseabnormalconditionsoroperations:LeakySRVQuestion14Table-ItemLinksPlantProcedures01D6120.000.25NUREG1123KACatalogRev.2239002A2.023.1/3.2LeakySRVILOEXAMPage:28of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO15ID:S90Points:1.00TheplantisoperatingatfullpowerwithDivision2SGTSOUTOFSERVICEformaintenance.Thefollowingindicationsoccur:3D85,PRIMARYCONTAINMENTHIGHPRESSCHANNELTRIP,alarmsP50-R801,DIV1NIASHeaderPressureRecorderisreading40PSIGanddegradingrapidlyWhichONEofthefollowingdescribestheaffectoftheseconditions,ifany,andtheEmergencyOperatingProcedureLegrequiredtomitigatethecondition,ifany?A.NOCHANGEINDIFFERENTIALPRESSUREbetweentheReactorBuildingandtheenvirons,NOEOPusageisrequired.B.DECREASINGDIFFERENTIALPRESSUREbetweentheReactorBuildingandtheenvirons,whichwouldFIRSTresultinanEntryConditionfortheRadiationReleaseControlEOPLeg.C.INCREASINGDIFFERENTIALPRESSUREbetweentheReactorBuildingandtheenvirons,whichwouldFIRSTresultinanEntryConditionfortheSecondaryContainmentControlEOPLeg.D.DECREASINGDIFFERENTIALPRESSUREbetweentheReactorBuildingandtheenvirons,whichwouldFirstresultinanEntryConditionfortheSecondaryContainmentControlEOPLeg.Answer:DAnswerExplanationHighDrywellPressurechanneltripwillcauseRBHVACtotripandisolate.LossofDIV1NIASwillresultinSGTSvalve/dampersfailingclosed.WithnoSGTSTraininservice,DECREASINGD/Pwillbenoted.ThefirstEOPentryconditionreachedwillbetheReactorBuildingD/Pat0inchesWC,whichrequiresentryintotheSecondaryContainmentEOPLeg.A.isplausible,wouldbetrueifRBHVACremainedoperatingB.isplausible,ahighdrywellpressureandunmonitoredgroundlevelreleasemayeventuallycauseRadreleaseentrycondition.C.isplausible,wouldbetrueifSGTSoperatedatfullcapacity.RBHVACtripwouldcauseDPtoloweruntilSGTSstarted.ILOEXAMPage:29of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion15InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:4.00SystemID:31846User-DefinedID:S90CrossReferenceNumber:315-0020-C011-001Topic:LOCA-NIASNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013Comments:KA-Abilityto(a)predicttheimpactsofthefollowingontheSTANDBYGASTREATMENTSYSTEM;and(b)basedonthosepredictions,useprocedurestocorrect,control,ormitigatetheconsequencesofthoseabnormalconditionsoroperations:PlantairsystemfailureQuestion15Table-ItemLinksPlantProcedures03D08523.40429.100.01SH5NUREG1123KACatalogRev.2261000A2.092.4*/2.6*PlantairsystemfailureILOEXAMPage:30of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO16ID:S91Points:1.00Theplantisoperatingwiththefollowingsteadystateconditions:ReactorPower99%NorthRRMGspeed72.94%SouthRRMGspeed87.92%LoopAJetPumpFlow44.2Mlbm/hrLoopBJetPumpFlow50.9Mlbm/hrTotalcoreflow95.1Mlbm/hrBasedontheseconditions,(1)scooptube(s)willbelockedandtheCRSwill(2)

.A.(1)both(2)enter20.138.03,UNCONTROLLEDRECIRCFLOWCHANGE,andtriptheSouthRRMGB.(1)neither(2)enter20.138.03,UNCONTROLLEDRECIRCFLOWCHANGE,andtriptheSouthRRMGC.(1)both(2)enterLCOforRecircloopsoperating,anddeclare'A'loopflowinoperablewithin2hoursD.(1)neither(2)enterLCOforRecircloopsoperating,anddeclare'A'loopflowinoperablewithin2hoursAnswer:DAnswerExplanationNoconditionexiststocauseascooptubetolock.ThecorrectansweristoentertheLCObasedA.isincorrectbecauseNoconditionexiststocauseascooptubetolock.Thescooptubewilllockifspeedis>10%fromDEMAND.Thereisnoscooptubelockbetweenloops.TheuncontrolledrecircflowAOPdirectstrippingtheaffectedMGisspeedincreased>10%withanuncontrolledrecircflowchange.B.isincorrectbecausetheuncontrolledrecircflowAOPdirectstrippingtheaffectedMGisspeedincreased>10%withanuncontrolledrecircflowchange.Thereisnoindicationofthisoccurring.C.isincorrectbecauseNoconditionexiststocauseascooptubetolock.ILOEXAMPage:31of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion16InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:3.00SystemID:32586User-DefinedID:S91CrossReferenceNumber:NEWTopic:RecircFlowControlNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilityto(a)predicttheimpactsofthefollowingontheRECIRCULATIONFLOWCONTROLSYSTEM;and(b)basedonthosepredictions,useprocedurestocorrect,control,ormitigatetheconsequencesofthoseabnormalconditionsoroperations:RecirculationpumpspeedmismatchbetweenloopsQuestion16Table-ItemLinksPlantProcedures20.138.0123.138.01NUREG1123KACatalogRev.2202002A2.043/3.2Recirculationpumpspeedmismatchbetweenloops:Plant-SpecificTechnicalSpecifications3.4.1RecirculationLoopsOperatingILOEXAMPage:32of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO17ID:S92Points:1.00Theplantisoperatingat75%powerwiththeNorthandSouthCondenserpumpsrunning.TheCenterCondenserpumphasbeenremovedfromservice.Laterthefollowingconditionsexist:NormalandEmergencyHotwellsupplypumpsarerunningThenormalandemergencycondensermakeuplevelcontrolvalvesare100%openNorthcondenserhotwelllevelisindicating6inchesonIPCSandslowlyloweringSouthcondenserhotwelllevelisindicating0inchesonIPCSandslowlyloweringBasedontheseindications:Whatistheoperatingconditionofthecondenserpumps?AND(1)WhatactionshalltheCRSdirect?(2)A.(1)NorthrunningandSouthtripped(2)Performarapid/emergencypowerreductioninaccordancewith23.623,ReactormanualcontrolsystemB.(1)Bothrunning(2)Performarapid/emergencypowerreductioninaccordancewith23.623,ReactormanualcontrolsystemC.(1)Bothtripped.(2)Placethemodeswitchinshutdowninaccordancewith20.107.01,LossofFeedwaterorFeedwaterControlD.(1)Northtripsfollowedbysouthtripafteratimedelay.(2)Placethemodeswitchinshutdowninaccordancewith20.107.01,LossofFeedwaterorFeedwaterControlAnswer:CAnswerExplanationThelowhotwellleveltriprequiresthenorthandsouthhotwellinstrumentstobeatorbelow16inchesforthepumptrip.ThecorrectactionistoplacethemodeswitchinshutdownbecausetheloweringlevelinthehotwellindicatesthatadequatepumpingcapacityisnotavailablewhichsatisfiestheimmediateactionintheAOP.A.isplausiblebecausetheexamineemaybelievethatthepumptripsonlowcondenserlevelishotwellspecific,andmaybelievethepumpstripat0inchesintheassociatedhotwell.B.isplausiblebecausetheexamineemayknowthatboththenorthandsouthhotwelllowlevelinstrumentsarerequiredforapumptripbutbelievethatthepumpstripat0inchesinthehotwell.PerformingarapidpowerreductionwouldminimizethewaterdemandandpossiblyrecoverhotwelllevelD.isplausiblebecausetheexamineemaybelievepumptripsarestaggeredandemployatimedelaysimilartoHFPs.ILOEXAMPage:33of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion17InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:4.00SystemID:32986User-DefinedID:S92CrossReferenceNumber:NEWTopic:HotwellLevelNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Abilityto(a)predicttheimpactsofthefollowingontheREACTORCONDENSATESYSTEM;and(b)basedonthosepredictions,useprocedurestocorrect,control,ormitigatetheconsequencesofthoseabnormalconditionsoroperations:LowhotwelllevelQuestion17Table-ItemLinksPlantProcedures20.107.0105D055NUREG1123KACatalogRev.2256000A2.063.2/3.2LowhotwelllevelILOEXAMPage:34of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO18ID:S93Points:1.00Thefollowingarecurrentplantconditions:ReactorPower100%RPVLevel186inches(slowlylowering)NorthandSouthRFPTspeed>5000RPMAllCondenserPumpcurrentindicatorsYellowandflashing5D107,CONDENSATESUPPLYHDRPRESSUREHIGH/LOWalarming3D164,FEEDWATERCONTROLDCSTROUBLEalarming3D156,REACTORWATERLEVELLOWalarmingNorthandSouthHeaterDrainsPumpsinserviceTemperaturesintheReactorandTurbineBuildingsnormalBasedontheseconditions,(1)whateventhasoccurred,and(2)whatoperatoractionshouldbetaken?A.(1)BothRFPminimumflowvalvesfailedOPEN.(2)IsolateRFPminimumflowvalveswiththeirmotoroperatedisolationvalves.B.(1)RPVStartupLCVfailedOPEN.(2)PlacetheRPVStartupLCVcontrollerinmanual,andsetto0%demand.C.(1)NorthHeaterDrainsPumpdischargevalvedriftedCLOSED.(2)Enter20.107.01,LOSSOFFEEDWATERORFEEDWATERCONTROL.D.(1)NorthHeaterDrainPumprecirclinevalvefailedOPEN.(2)ManuallyinitiateaReactorRecircrunback.Answer:AAnswerExplanationTheconditionsareindicativeofRFPminflowvalvesfailingopen.MOP04tellsoperatorstotakemanualcontroltomaintaincontrolbands.TheoperatorsmustisolatetheminflowvalvestopreventaRxScramonLowRPVlevel.PerMOP042.3.3Auto/ManualControl:1.Automaticcontrolisthepreferredmethod,ifavailable.2.Manualcontrolisrequiredwhenanyofthefollowingapply:a.Automaticcontrolisunavailable.b.ManualcontrolisrequiredtomaintaincontrolbandB.isincorrectbecausetherewouldbeverylittletonoflowthroughthehighlyrestrictiveflowpathwiththelargeboreFWinjectionvalvesopen.C.isincorrectbecausethisconditionwouldresultinasmallpowertransientduetolossofFWheatingbutoneHDPiscapableofmaintainingflowtotheRFPs.D.isincorrectbecausethiswouldhaveanegligibleeffectonRPVWaterlevel.ILOEXAMPage:35of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion18InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:3.00SystemID:32606User-DefinedID:S93CrossReferenceNumber:NEWTopic:RFPMinFlowFailureNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-ReactorFeedwater:Abilitytointerpretcontrolroomindicationstoverifythestatusandoperationofasystem,andunderstandhowoperatoractionsanddirectivesaffectplantandsystemconditionsQuestion18Table-ItemLinksPlantProcedures20.107.0123.107MOP04NUREG1123KACatalogRev.2G2.2.444.2/4.4Abilitytointerpretcontrolroomindicationstoverifythestatusandoperationofsystem,andunderstandhowoperatoractionsanddirectivesaffectplantandsystemconditions259001ReactorFeedwaterSystemILOEXAMPage:36of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO19ID:S94Points:1.00Theplantisrunningatratedpowerwithallsystemsfunctioningnormally.TheReactorBuildingRoundsOperatorandCRDHSystemEngineerarebriefingtheCRSonanupcomingsurveillanceintheControlRoom.TheShiftManagerandSTAareattendingameetinginthePlantManager'soffice,andtheCRNSOhaslefttheControlRoomtousethebathroomfacilities.BothRRMGSetsthentrip.BeforetheP603operatorcanplacetheModeSwitchinShutdown,hecollapsesandisincapacitated.WhatactionmusttheCRSperform?A.DirecttheReactorBuildingRoundsOperatortoperform20.000.21,ReactorScram.B.WaitfortheCRNSOtoreturnfromthebathroomfacilities,anddirecthimtoplacetheModeSwitchinShutdown.C.DirecttheSystemEngineertoplacetheModeSwitchinShutdown.D.PlacetheModeSwitchinShutdown.Answer:DAnswerExplanationMOP13,section3.1.4.5,givestheCRSauthoritytomanipulatecontrolsinanemergencyorwhenControlRoompersonnelareincapacitated.TheCRNSOshallbekeptinformedoftheactionstaken.Innon-emergencysituations,theCRSshallconferwiththeCRNSObeforetakingsuchactions.A.Thisactionisplausiblebecausetheoperatorisqualifiedatthesite,butnotlicensed.B.ThisisplausiblesincetheCRNSOistheotherlicensedROintheControlRoom.C.ThisisplausiblebecauseoftheunusualcircumstancesandtheperceptionthattheCRScanorderplantpersonneltotakeactionintheControlRoom.Question19InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:2.00SystemID:31926User-DefinedID:S94CrossReferenceNumber:NEWTopic:ConservativeActionsNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-Reactorwaterlevelresponse:KnowledgeofconservativedecisionmakingpracticesILOEXAMPage:37of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion19Table-ItemLinksPlantProcedures20.138.01MOP03-ConductOfOperationsNUREG1123KACatalogRev.2G2.1.393.6/4.3KnowledgeofconservativedecisionmakingpracticesILOEXAMPage:38of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO20ID:S95Points:1.00AfteraONEWEEKVACATION,aNuclearStationOperatorisscheduledtoworkthefollowingschedule:SundayMondayTuesdayWednesdayThursdayFridaySaturdayOFF12hrs12hrs12hrs12hrs8hrsOFFPerMGA17,WorkingHourLimits,whichONEofthefollowingistheMAXIMUMADDITIONALhoursthispersoncanbescheduledtoworkWITHOUTexceedinganyadministrativelimits?A.4hoursonTuesdayB.8hoursonThursdayC.10hoursonSaturdayD.12hoursonSundayAnswer:DAnswerExplanation12hoursonSunday,doesNOTexceed26hoursina48hourperiodor72hoursina7dayperiod.Aisplausible,butexceeds26hoursina48hourperiod.Bisplausible,butexceeds26hoursina48hourperiod.Cisplausible,itexceedsNOlimit,isNOTthemaximum.Question20InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:2.00SystemID:31167User-DefinedID:S95CrossReferenceNumber:802-4101-0015-008Topic:WorkHourLimitsNumField1:LOKHNumField2:10CFR55.43(b)2TextField:ILO2013Comments:KA-Abilitytouseproceduresrelatedtoshiftstaffing,suchasminimumcrewcomplement,overtimelimitations,etc.ILOEXAMPage:39of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion20Table-ItemLinksPlantProceduresMGA17-WorkingHourLimitsNUREG1123KACatalogRev.2G2.1.52.9/3.9Abilitytouseproceduresrelatedtoshiftstaffing,suchasminimumcrewcomplement,overtimelimitations,etc.ILOEXAMPage:40of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO21ID:S96Points:1.00Theplantisoperatingat50%power.Whatis(1)theMAXIMUMamountofTOTALReactorCoolantSystemLeakageallowedforcontinuedplantoperation,and(2)whatactionisrequiredifthislimitisexceeded?A.(1)25gpm(2)Verifysourceofleakageisnotservicesensitivetype304or316austeniticstainlesssteelin4hours.B.(1)5gpm(2)Reduceleakagetowithinlimitsin4hours.C.(1)25gpm(2)Reduceleakagetowithinlimitsin4hours.D.(1)5gpm(2)BeinMode3in12hours.Answer:CAnswerExplanationTSLCO3.4.4.climitsTOTALRCSLeakageto25gpm.Iftotalleakageisnotwithinthelimit,TSrequiresleakagetobereducedwithinlimitsin4hours.Aisplausible-25gpmistheTOTALRCSLeakagein24hours.Theactionisnotproperforthislimit.Bisplausible-5gpmistheMaximumUNIDENTIFIEDLeakage.Thisactionisproperforthislimit.Displausible-5gpmistheMaximumUNIDENTIFIEDLeakage.ThisactionisproperforthetimelimitexceededforTS3.4.4ConditionA&Borifpressureboundaryleakageexists.Question21InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:2.00SystemID:31066User-DefinedID:S96CrossReferenceNumber:804-0012-A000-001Topic:MaximumTotalReactorCoolantSystemLeakageNumField1:LOKLNumField2:10CFR55.43(b)6TextField:ILO2013Comments:KA-KnowledgeofconditionsandlimitationsinthefacilitylicenseILOEXAMPage:41of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion21Table-ItemLinksNUREG1123KACatalogRev.2G2.2.383.6/4.5KnowledgeofconditionsandlimitationsinthefacilitylicenseTechnicalSpecifications3.4.4RCSOperationalLEAKAGEILOEXAMPage:42of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO22ID:S97Points:1.00TheplantisrunningatratedpowerwiththeHPCIsysteminoperable.Whileperforming24.137.01,OPERABILITYOF480VSWINGBUS72CFAUTOMATICTHROWOVERSCHEME,thethrowoverfailedtooccurwhentheAutoThrowoverPermissiveTestswitchatBus72C,Position1AwastakentoCLOSE.TheSROhasenteredTechSpec3.0.3.MaintenancepersonnelhavesubmittedFormMMA26001,TROUBLESHOOTINGDATASHEET,forapprovalwiththefollowinginformation:TheRiskCategoryfortheconditionisconsidered'HIGH'ThetroubleshootingboundaryisBus72C,Position1AcubicleplainAflashlightmustbreakthecubicleplanetoperformanadequatevisualinspectionbasedonorientationBasedontheinformationgiven,whatistheLOWESTlevelofapprovalrequired?(SeeattachedMMA26,Enc.C.)A.ControlRoomNSOB.ControlRoomSupervisorC.MaintenanceManagerD.TroubleshootingTeamLeadAnswer:BAnswerExplanationMMA26EnclosureCdesignatesthisactivitytobe'CategoryC'basedonitbeing'HighRisk'andtheRigorMatrix.TheRigorMatrixallowsCategoryCbasedonVisualInspectionwithbarrierintrusion.CategoryCcanbeapprovedbyanSRO.A.TheControlRoomNSOCANNOTapprovetheTroubleshootingdatasheet.TheyareonlyrequiredtobeROlicensed.C.TheMaintenanceManagerCANapprovetheTroubleshootingdatasheet,buttheyarenottheLOWESTlevel.MMapprovalisrequiredforCategoriesA/B.D.TheTroubleshootingTeamLeaddoesnothaveapprovalauthority.ILOEXAMPage:43of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion22InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:4.00SystemID:32646User-DefinedID:S97CrossReferenceNumber:NEWTopic:Troubleshooting-TSissueNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013mcComments:KA-KnowledgeoftheprocessformanagingtroubleshootingactivitiesNOTE:MMA26EnclosureC,Page3of5mustbeprovidedtoexaminees.Question22Table-ItemLinksPlantProceduresTECHSPECSMMA26-TroubleshootingNUREG1123KACatalogRev.2G2.2.202.6/3.8KnowledgeoftheprocessformanagingtroubleshootingactivitiesILOEXAMPage:44of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO23ID:S98Points:1.00FollowingatransientinwhichRPVleveldroppedbelowthetopofactivefuel(TAF),plantconditionsareasfollows:RPVlevelisbeingcontrolledat197inches.ALLControlRodsareinserted.ContainmentVentingisbeingperformedtomaintainTorusPressurebelowthePrimaryContainmentPressureLimit.ContainmentHighRangeRadiationMonitorsindicate3000R/hr,20minutesafterthescram.InaccordancewithEP-101,whichONEofthefollowingEmergencyActionLevelsisappropriatebasedsolelyonFissionProductBarrierDegradation?(SeeattachedEP-101,Enc.B.)A.UnusualEventFU1-AnyLossORAnyPotentialLossofPrimaryContainment.B.AlertFA1-AnyLossORAnyPotentialLossofEITHERFuelCladORReactorCoolantSystem.C.SiteAreaEmergencyFS1-LossORPotentialLossofAnyTwoBarriers.D.GeneralEmergencyFG1-LossofAnyTwoBarriersANDPotentialLossofThirdBarrierAnswer:DAnswerExplanationCHRRMSisanindicationofFuelCladbreach,andVentingduetoapproachingPCPLisRCSandCTBarrierbreach.ThisquestionisconceptualonFPBarriers.AisplausibleifcandidatecannotassociateventingirrespectiveofreleaserateswithCTfailure.BisplausibleifcandidatecannotassociateCHRRMindicationwithfuelfailureORContainmentPressurewithRCSfailureORassociateventingirrespectiveofreleaserateswithCTfailure.CisplausibleifcandidatecannotassociateCHRRMindicationwithfuelfailureandContainmentPressurewithRCSfailure.ILOEXAMPage:45of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion23InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

5Difficulty:3.00SystemID:31046User-DefinedID:S98CrossReferenceNumber:832-0001-0004-004Topic:EALforFissionProductBarrierDegradationNumField1:LOKHNumField2:10CFR55.43(b)4TextField:ILO2013Comments:KA-Knowledgeofradiationorcontaminationhazardsthatmayariseduringnormal,abnormal,oremergencyconditionsoractivities.ProvideEP-101Enc.BQuestion23Table-ItemLinksPlantProceduresEP-101NUREG1123KACatalogRev.2G2.3.143.4/3.8Knowledgeofradiationorcontaminationhazardsthatmayariseduringnormal,abnormal,oremergencyconditionsoractivities.ILOEXAMPage:46of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO24ID:S99Points:1.00YouaretheShiftManagerwiththeplantoperatingatratedconditions.AnaccidentoccursontheRefuelFloorresultinginthefollowingconditions:AnALERThasbeendeclaredduetodamagetoirradiatedfuelandthelossofwaterlevelinthefuelpool.TheTSCisbeingstaffed,howevercommandandcontrolhasNOTbeentransferredfromtheMainControlRoom.Aworkerhasbeeninjuredduringtheaccident,hasbeenverifiedtobelocatedontherefuelbridge,andhasahighprobabilityofsurvivalifpromptlytreatedfortheinjuries.Youhavebeenrequestedtoauthorizeanexposureof22RemTEDEfortwoworkerswhohavevolunteeredtorescuetheinjuredperson.RadProtectionmanagementpersonnelhavereviewedthesituationandrecommendrescuingtheinjuredworker.Theemergencyworkershavebeenproperlybriefed,haveacknowledgedthattheyhavevolunteeredandunderstandtheassociatedrisks,andarewaitingintheReactorBuildingforauthorizationtorescuetheinjuredperson.WhichofthefollowingstatementsiscorrectregardingyourauthorizationoftherequestincompliancewithEP-201-03,VariancesfromRoutineRadiologicalPracticeandProceduresDuringanEmergency?A.YoucanauthorizetherequestbecausecommandandcontrolhasnotbeentransferredtotheTSC.B.YoucanauthorizetherequestONLYafterobtainingapprovalfromthePlantManagerbecausecommandandcontrolhasnotbeentransferredtotheTSCandPlantManagerconcurrenceisrequired.C.YoucannotauthorizetherequestbecauseapprovalcanonlybegrantedbytheRadiationProtectionAdvisorandmaynotbedelegated.D.YoucannotauthorizetherequestbecausetheemergencyworkerswillexceedthemaximumallowableEmergencyExposurelimitof10RemTEDE.Answer:AAnswerExplanationThisconditionmeetsalloftherequirementsofEP-201-03step6.2.1.4.Bisplausible,butPlantManagerapprovalisnotrequiredandwouldonlydelaytheauthorization.Cisplausible,butRPAapprovalisnotrequiredinthisinstance,EmergencyDirectorauthorizationissufficient.Displausible,but10RemTEDEisallowedto(perEP-201-03)tomitigateanaccidentorprotectvaluableproperty.ILOEXAMPage:47of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion24InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:4.00SystemID:31026User-DefinedID:S99CrossReferenceNumber:838-0001-0002-004Topic:AuthorizeexposuretorescueinjuredworkerNumField1:LOKHNumField2:10CFR55.43(b)4TextField:ILO2013Comments:KA-Knowledgeofradiationexposurelimitsundernormaloremergency conditions.Question24Table-ItemLinksPlantProceduresEP-201-03NUREG1123KACatalogRev.2G2.3.43.2/3.7KnowledgeofradiationexposurelimitsundernormalandemergencyconditionsILOEXAMPage:48of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SRO25ID:S100Points:1.00Thefollowingconditionsexistone(1)hourafteraLossofCoolantAccident:Drywellpressure56psig(rising)Toruspressure55psig(rising)Drywelloxygen5%(rising)Drywellhydrogen5%(rising)CHRRMreading9.1E4RPVlevel12inches(stable)RPVpressure100psig(decreasingslowlythroughanunisolableleak)Aftertheinitialrecommendation,whichofthefollowingProtectiveActionRecommendationsshouldbemade?(AssumeNOdangeroustravelconditionsorshort,controlledrelease.)(SeeattachedEP-545,Enc.A,andEP-547,Enc.A&B.)A.EvacuateAllAreas.B.EvacuateArea1,andevacuatedownwindaffectedareasto5miles.C.EvacuateAreas1,2,and3,andevacuatedownwindaffectedareasto10miles.D.EvacuateArea1,andevacuatedownwindaffectedareasto5miles,andevacuateremainderof10mileEPZwheninitialevacuationiscomplete.Answer:DAnswerExplanationCurrentCHRRMreadingindicates>100%GapActivity(perEP-547,Enc.B.)UsingEP-545,Enc.A,correctPARisEvacuateArea1,andevacuatedownwindaffectedareasto5miles,andevacuateremainderof10mileEPZwheninitialevacuationiscomplete.A,B,&Careplausible,butincorrectsincetheyassume<100%gapactivity.ILOEXAMPage:49of5025July2013 EXAMINATIONANSWERKEY2013ILONRC-SROQuestion25InfoQuestionType:MultipleChoiceStatus:ActiveAlwaysselectontest?YesAuthorizedforpractice?NoPoints:1.00TimetoComplete:

3Difficulty:4.00SystemID:31007User-DefinedID:S100CrossReferenceNumber:832-0001-0016-002Topic:ProvideProtectiveActionRecommendationsNumField1:LOKHNumField2:10CFR55.43(b)5TextField:ILO2013Comments:KA-Knowledgeofemergencyplanprotectiveactionrecommendations.Providethefollowingreferencestoexaminee:EP-545,Enc.AEP-547,Enc.A&BQuestion25Table-ItemLinksPlantProceduresEP-545EP-547NUREG1123KACatalogRev.2G2.4.442.4/4.4KnowledgeofemergencyplanprotectiveactionrecommendationsILOEXAMPage:50of5025July2013