2015 Fermi Power Plant Initial License Examination Administered Written Examination.

220 Pages·2015·2.08 MB·English

ID:R01 Points:1.00
Difficulty: 0.00 LevelofKnowledge: Low Source: NEW
Theplantisoperatingwiththefollowingindications:
B21-R612JetPumpTotalFlowRecorder 87.4Mlbs/hr
C51-R608ARxPowerAPRM1 100%
B31-R621A/BRRMGSETSPEEDCONTROLLERs 73%(controllinginAUTO)
Basedontheabovestartingconditionsandassumingnooperatoractioninresponsetothe
transient,openingthefieldbreakerfor'A' ReactorRecircPumpwillcauseReactorPowerto
lower.Thepowerreductionisdueto_______.
A. 'A'ReactorRecircpumpcoastingdownONLY.
B. 'A'ReactorRecircPumpcoastingdownPLUSaspeedreductionin'B'Reactor
Recircpumpbecauseof#4limiter.
C. 'A'ReactorRecircPumpcoastingdownPLUSaspeedreductionin'B'Reactor
Recircpumpbecauseof#2and#3limiters.
D. 'A'ReactorRecircPumpcoastingdownPLUSaspeedreductionin'B'Reactor
Recircpumpbecauseoflimiter#1limiter.
Answer: A
ILO2015Written Page: 1of220 08September2015
AnswerExplanation:
Limiter4istheonlyrunbackthatwouldactuate.Atasettingof75%,itwouldhavenoeffectonthe
reductiononflow.ThereforethecoastdownofApumpistheonlythingloweringRxpower.
DistractorExplanation:
B. ThisanswerisincorrectbecausethesetpointofLimiter#4is75%,thisanswerisplausibleifthe
examineeincorrectlythought#4limiterasalowersetpoint.
C. ThisanswerisincorrectandbecauseLimiters#2and#3arecutout.Thisanswerisplausibleifthe
examineeincorrectlybelieves#2&#3limiterswillenforce.
D. ThisanswerisincorrectbecauseLimiter#1isactuactedwhenRRpumpDischargeVlvisnotfull
openortotalFW flowislessthan20%.Thisanswerisplausibleiftheexamineeincorrectlybelieves
flowwouldlowerduetolimiterenforcement.
ReferenceInformation:
23.138.01Section1.0Description(Limiter#2,#3,#4onpage8)-explainslimiters
PlantProcedures
23.138.01
NUREG1123KACatalogRev.2
295001AK3. KnowledgeofthereasonsforthefollowingresponsesastheyapplytoPARTIALOR
COMPLETELOSSOFFORCEDCOREFLOW CIRCULATION:
295001AK3.02 Reactorpowerresponse
10CFR55RO/SROWrittenExamContent
10CFR55.41(b)(10) Administrative,normal,abnormal,andemergencyoperatingproceduresfor
thefacility.
NRCExamUsage
ILO2015Exam
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ID:R02 Points:1.00
Difficulty: 0.00 LevelofKnowledge: Low Source: NEW
Followingalossof120kVandareactorSCRAM,thefollowingindicationsexistonpanelH11-
P809:
BreakerPositions
• BUS64BPOSB8 CLOSED
• BUS64BPOSB6 TRIPPED
• BUS11EAPOSEA3 CLOSED
• BUS12EBPOSEB3 OPEN
• BUS64CPOSC8 CLOSED
• BUS64CPOSC6 TRIPPED
Basedontheseindications(1)whateventhasoccurred,and(2)whatactionsshouldthe
operatingcrewtakeinadditiontoenteringAOP20.300.120kV?
A. (1)BuslockoutonBUS64B
(2)Perform20.300.72B,LossOfBus72BONLY.
B. (1)BuslockoutonBUS64C
(2)Perform20.300.72C,LossOfBus72CONLY.
C. (1)EDG12failureduetoafaultwithEDG12
(2)Perform20.307.01,EmergencyDieselGeneratorFailureAND20.300.72C,
LossOfBus72C.
D. (1)EDG11failureduetoafaultwithEDG11
(2)Perform20.307.01,EmergencyDieselGeneratorFailureAND20.300.72B,
LossOfBus72B.
Answer: C
ILO2015Written Page: 3of220 08September2015
AnswerExplanation:
20.300.120kVdirects20.307.01and20.300.72CiftheEDG12outputbreakerfailstoclose (ConditionK).
Additionally,nobuslockoutisindicatedso20.307.01wouldbeeffectiveifthecauseoftheEDGfailureis
correctable.
DistracterExplanation:
A. Isincorrectandplausiblebecausethereisnoindicationofa64BBUSLOCKOUT(indicatedbyBUS
isolation).Iftherewasa64BBUSLOCKOUT,entering20.300.72Bwouldbecorrect.
B. Isincorrectandplausiblebecausetherethereisnoindicationofa64CBUSLOCKOUT(indicatedby
BUSisolation).Iftherewasa64CBUSLOCKOUT,entering20.300.72Cwouldbecorrect.
D. IsincorrectandplausiblebecausetheBUS11EAPOSEA3isCLOSEDsoEDG11hasstartedand
loaded.IfEDG11hadfailedthen20.307.01and20.300.72Bwouldbecorrect.
ReferenceInformation:
20.300.120kv,page9,ConditionK.
PlantProcedures
20.300.120kv
NUREG1123KACatalogRev.2
295003AA1. Abilitytooperateand/ormonitorthefollowingastheyapplytoPARTIALOR
COMPLETELOSSOFA.C.POWER:
295003AA1.02Emergencygenerators
10CFR55RO/SROWrittenExamContent
10CFR55.41(b)(10) Administrative,normal,abnormal,andemergencyoperatingproceduresfor
thefacility.
NRCExamUsage
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ID:R03 Points:1.00
Difficulty: 3.00 LevelofKnowledge: High Source: NEW-CONTRACT
At1030,alossofoffsitepoweroccurred.AOP20.300.Offsite,LossofOffsitePower,isbeing
implementedtomitigatetheelectricalsystemevent.
At1145(currenttime),electricalsystemindicationsandconditionsareasfollows:
• AllEDGsarerunningloaded.
• 120kVand345kVswitchyardcomponentsaredamagedandarebeingevaluatedby
personnelforrestoration.
• 10D72BOP260/130VBATTERY2PCTROUBLEisinalarm.
• 9D17DIVIESS130VBATTERY2PATROUBLEalarmedbutisnowclear.
• 10D68DIVIIESS130VBATTERY2PBTROUBLEalarmedbutisnowclear.
Iftheelectricalsystemisoperatingwithinitsdesignbases,basedontheindications,(1)whatis
thestatusofthestationbatteriesand(2)whatistheirabilitytosupplyloadsduringtheevent?
A. (1) Battery2PCisbelowminimumcellvoltage,BOPloadsarede-energized.
(2) Batteries2PAand2PBareaboveminimumcellvoltage,ESFloadsare
suppliedadequatepowertooperate.
B. (1) Battery2PCisaboveminimumcellvoltage,BOPloadsaresupplied
adequatepowertooperate.
(2) Batteries2PAand2PBareaboveminimumcellvoltage,ESFloadsare
suppliedadequatepowertooperate.
C. (1) Battery2PCisaboveminimumcellvoltage,BOPloadsshouldbestripped
inordertosupplyadequatepowertoremainingloads.
(2) Batteries2PAand2PBareaboveminimumcellvoltage,ESFloadsare
suppliedadequatepowertooperate.
D. (1) Battery2PCisbelowminimumcellvoltage,BOPloadsshouldbestrippedin
ordertosupplyadequatepowertoremainingloads.
(2) Batteries2PAand2PBarebelowminimumcellvoltage,ESFloadsshould
bestrippedinordertosupplyadequatepowertoremainingloads.
Answer: C
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AnswerExplanation:
BasedonthedesignoftheBOPbatteries,underloadedconditionsthebatteriescansupplyloadsforupto
90minutesbeforefallingbelowminimumcellvoltagewithnochargeravailable.Basedontheconditions
ofthe120kvswitchyard,currentlynoBOPchargerisavailable.TheprocedurerequiresstrippingtheDC
BOPbussesafteronehouriftheDCBOPchargersremainunavailable.Thisistoretainthebatteries
availableforDCcontrolpoweruseupto4hours.ESFbatteriesarefullyavailablewithchargersenergized
duetotheEDGpowerbeingavailable.AlarmsindicatebatterychargersareinservicefortheESF
batteriesasdirectedbytheprocedure.
DistracterExplanation:
A. IsincorrectandplausiblebecausetheexamineecouldincorrectlyinterprettheBOPbatterytrouble
alarmasalossofthebatteryvoltage.Thevoltagealarmisabovetheminimumcellvoltage.This
wouldalsobesupportedbytheindicationthatoffsitepowercannotberestored.ESFchargersare
energizedasindicatedbythealarmstatuswhichalsoenhancestheplausibilityofthedistracter.
B. IsincorrectandplausiblebecausetheexamineecouldincorrectlyinterpretthatsinceEDGpoweris
availableallavailablebatterychargersbothESFandBOPareenergized.ESFchargersareenergized
asindicatedbythealarmstatuswhichalsoenhancestheplausibilityofthedistracter.
D. Isincorrectandplausiblebecausetheexamineecouldincorrectlyinterprettheindicationand
applicationoftheknowledgeofthedesignbasisof1.5hourstotheBOPbatteryandconcludethat
sinceonehourhaspassedwithoutstrippingtheBOPbattery,thatthecellsarebelowminimum
voltage.
ReferenceInformation:
R32-00DCELECTRICALSYSTEMDBDpages26-27CriteriaforBOPbatteries
PlantProcedures
20.300.Offsite
R32-00DESIGNBASISDOCUMENTFORDCELECTRICALSYSTEM
NUREG1123KACatalogRev.2
295004AA2. Abilitytodetermineand/orinterpretthefollowingastheyapplytoPARTIALOR
COMPLETELOSSOFD.C.POWER:
295004AA2.03 Batteryvoltage
10CFR55RO/SROWrittenExamContent
10CFR55.41(b)(10) Administrative,normal,abnormal,andemergencyoperatingproceduresfor
thefacility.
NRCExamUsage
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ID:R04 Points:1.00
Difficulty: 3.00 LevelofKnowledge: Low Source: BANK:802-2003-0006-008
Withtheplantoperatingat90%power,aFeedwaterControllerFailure-MaximumDemand
occurs.Automaticprotectionfromthistransientisassuredbyascramgeneratedasaresultof
________.
A. OPRM-Upscaledirectscram,whichpreventsexceedingtheMCPRSafety
Limit
B. ReactorWaterLevelHigh-Level8MainTurbineTripindirectscram,which
preventsexceedingtheMCPRSafetyLimit
C. ReactorVesselSteamDomePressure-Highdirectscram,whichprevents
exceedingtheReactorCoolantSystemPressureSafetyLimit
D. APRMSimulatedThermalPowerUpscaledirectscram,whichprevents
exceedingtheReactorCoolantSystemPressureSafetyLimit
Answer: B
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AnswerExplanation:
Thefeedwaterandmainturbinehighwaterleveltripinstrumentationisassumedtobecapableof
providingaturbinetripinthedesignbasistransientanalysisforafeedwatercontrollerfailure,maximum
demandevent. TheLevel8tripindirectlyinitiatesareactorscram(above30%RTP)fromthemain
turbinetripandtripsthefeedwaterpumps,therebyterminatingtheevent. Thereactorscrammitigatesthe
reductioninMCPR.
DistracterExplanation:
A. Thisisplausibleandincorrectbecausethisprotectsagainstthermalhydraulicpoweroscillations.
C. Thisisplausibleandincorrectbecausethisprotectsagainstanyeventthatresultinareactorpressure
increase.
D. Thisisplausibleandincorrectbecausethisprovidesprotectionagainstalossoffeedwaterheating
andensurestheMCPRSLisnotexceeded.
ReferenceInformation:
ForthisquestiontheT.S.B.isusedasareferenceforsysteminformationthatistaughtinthesystems
courseunderlessonplanLP-315-0127pertrainingobjectiveC013:
C013. DescribetheReactorProtectionsystemtechnicalspecificationlimitingconditionsforoperation,
theirbases,theassociatedsurveillancerequirement(s),andtheirrelationshiptooperability.
T.S.B.3.3.2.2(pg3.3.2.2-2)APPLICABLESAFETYANALYSES
NUREG1123KACatalogRev.2
G2.2.38 Knowledgeofconditionsandlimitationsinthefacilitylicense.
295005AK1 Knowledgeoftheoperationalimplicationsofthefollowingconceptsastheyapplyto
MAINTURBINEGENERATORTRIP:
295005AK1.02 Corethermallimitconsiderations.
TechnicalSpecifications
3.3.2.2 FeedwaterandMainTurbineHighWaterLevelTripInstrumentation
10CFR55RO/SROWrittenExamContent
10CFR55.41(b)(5) Facilityoperatingcharacteristicsduringsteadystateandtransientconditions,
includingcoolantchemistry,causesandeffectsoftemperature,pressureand
reactivitychanges,effectsofloadchanges,andoperatinglimitationsand
reasonsfortheseoperatingcharacteristics.
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ID:R05 Points:1.00
Difficulty: 3.50 LevelofKnowledge: High Source: BANK:315-0048-A018-001
Theplantwasoperatingat15%powerduringastartup.Duetoanelectricalmalfunction,ALL
TurbineControlValvesopened resultinginaReactorScram.Nooperatoractionshavebeen
taken.
InadditiontoSafetyReliefValves,whichoneofthefollowingliststhesystemsavailableforDecay
HeatRemovalIMMEDIATELYfollowingthescram?
A. ReactorWaterCleanupONLY.
B. TurbineBypassValvesandReactorWaterCleanupONLY.
C. MainSteamLineDrainValvesandTurbineBypassValvesONLY.
D. MainSteamLineDrainValves,TurbineBypassValvesandReactorWater
Cleanup.
Answer: A
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AnswerExplanation:
Withpowerat15%,theModeSwitchisinRUN.TCVsopeninglowersRPVPressure.Whenpressure
reaches756psigwithModeSwitchinRUN,aGP1PCISisolationoccursandaScram.WithMSIVs
closed,onlySRVsandRWCUareimmediatelyavailabletoremovedecayheat.
DistracterExplanation:
B. IsincorrectandplausiblebecauseTurbineBypassValvesarenotavailable.
C. IsincorrectandplausiblebecauseTurbineBypassValvesandMSLDrainsarenotavailable.
D. IsincorrectandplausiblebecauseTurbineBypassValvesandMSLDrainsarenotavailable.
ReferenceInformation:
23.601MainSteamLinePressure-Low
23.601MainSteamLineIsolationValve-ClosureLimitSwitches
20.000.21BasesModeSwitchinterlocks
PlantProcedures
20.000.21
20.000.21Bases
NUREG1123KACatalogRev.2
295006AK1. Knowledgeoftheoperationalimplicationsofthefollowingconceptsastheyapplyto
SCRAM:
295006AK1.01 Decayheatgenerationandremoval
10CFR55RO/SROWrittenExamContent
10CFR55.41(b)(10) Administrative,normal,abnormal,andemergencyoperatingproceduresfor
thefacility.
NRCExamUsage
ILO2015Exam
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