ES-401 Sample Written Examination Form ES-401-5 Question .

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ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21263000.K1.032.6Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR002-07-02(Attach if not previously provided)(including version/revision number)29Learning Objective:Question Source:Question History:Question Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New15139Last NRC Exam(Note changes or attach parent)NAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.437Comments:ES-401, Page 28 of 33L

/02/2004DifficultyLevel2CognitiveLevelLTopic AreaElectricalPointValue1Last UsedDateResponseTime3Exam BankNoneQuestion TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceDescriptionCOR0020702, DC Electrical DistributionRelated LessonsCOR0020702 OPS DC ELECTRICAL DISTRIBUTIONRelated ObjectivesCOR0020702001110B Predict the consequences of the following events on the DCElectrical Distribution System: Loss of Battery ventilationCOR002070200 I 0200 Given conditions and/or parameters associated with the DCElectrical Distribution System, determine if related TechnicalSpecification and Technical Requirements Manual LimitingCondition for Operation are metCOR0020702Related ReferencesRelated Skills (K/A)263000.K1.03 Knowledge of the physical connections and/or cause/effectrelationships between D.C. ELECTRICAL DISTRIBUTION and thefollowing: (CFR: 41.2 to 41.9 / 45.7 to 45.8) Battery ventilation (2.6 /2.8)

QUESTION: 115139 (l point(s))What is the main concern in the Battery Rooms during a failure of the Battery Roomventilation exhaust fans?a.Temperatures that will result in premature battery charger failures.b.Temperatures that will cause rapid vaporization of battery electrolyte.c.Humidity that will result in excessive battery post corrosion and reduced currentflow.d.Temperatures and hydrogen concentration levels that will make safe operation ofequipment uncertain.ANSWER: 1d.15139Temperatures and hydrogen concentration levels that will make safe operation ofequipment uncertain.Explanation:On a loss of Battery Room Ventilation removes the capability for the removal of H2 from therooms. From the Student text - 1. The battery room exhaust fans remove the hydrogenproduced by the 250 VDC and the 125 VDC batteries. 3. A loss of Battery Room Ventilationcould result in excessive hydrogen levels in the room. This is a special concern when batteriesare being charged, since the charging process produces hydrogen as a byproduct.Distractors:a.Temperatures that will result in premature battery charger failures. Although thiswould be a concern for the chargers the main concern according to the Studenttext is the accumulation of Hydrogen in the battery rooms that might get to anexplosive level.b.Temperatures that will cause rapid vaporization of battery electrolyte. Theelevated temperatures will cause some electrolyte to evaporate, main concernaccording to the Student text is the accumulation of Hydrogen in the battery roomsthat might get to an explosive level.c.Humidity that will result in excessive battery post corrosion and reduced currentflow. A concern, however the main concern according to the Student text is theaccumulation of Hydrogen in the battery rooms that might get to an explosive level.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21261000.K1.123.1Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson(Attach if not previously provided)(including version/revision number)19Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentCOR002-28-02See Attached(As available)Bank #Modified Bank #New1347Last NRC(Note changes or attach parent)NAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.437Comments:ES-401, Page 28 of 33L

30/2007DifficultyLevel2CognitiveLevelLTopic AreaSystemsPointValue1Last UsedDateResponseTime3Exam BankNoneQuestion TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceDescriptionCOR002280200 1050A, COR002280200 1050B Standby GasSystemRelated LessonsCOR0022802 OPS STANDBY GAS TREATMENTRelated ObjectivesCOR002280200 1050A Describe the interrelationships between SGT and the following:Reactor Building Ventilation SystemCOR002280200 1050B Describe the interrelationships between SGT and the following:Primary ContainmentCOR0022802261000.K1.12Related ReferencesRelated Skills (K/A)Knowledge of the physical connections and/or cause/effect relationshipsbetween STANDBY GAS TREATMENT SYSTEM and the following: (CFR:41.2 to 41.9 / 45.7 to 45.8) Primary containment purge system:Plant-Specific (3.1 / 3.2)

QUESTION:2Where does the Standby Gas Treatment System line up to take a suction on an automaticinitiation due to a refueling accident when the plant is in MODE 5?a.Reactor building exhaust plenum and the primary containment exhaust ventilation line.b.HPCI gland steam condenser exhauster and the HPCI room area.c.Reactor building exhaust plenum and the HPCI gland steam condenser exhauster.d.Primary containment exhaust ventilation line and the HPCI room area.ANSWER:a.2Reactor building exhaust plenum and the primary containment exhaust ventilation line.Explanation:From Student TextAutomatic Initiation - The SGT system can be automatically started on either a high drywellpressure ( 1.84 psig) or low-low reactor water level ( -42 inches) initiation signal or highradiation in the exhaust plenum initiation ( 49 mR/hr).This signal is caused by a Group 6 containment isolation signal. Both SGTS fans will start andtheir respective inlet, outlet, and dilution air supply valves will open. The Group 6 isolation isolatesthe Reactor Building by closing the MG set ventilation valves, tripping the Reactor Building supplyand exhaust fans and by isolating the normal ventilation. The SGTS suction from the ReactorBuilding Exhaust Plenum and SGTS room air valves draw air from the Reactor Building throughthe two parallel filter trains, to the fans, and then through the differential pressure control valves tothe Elevated Release Point.Distractors:b.HPCI gland steam condenser exhauster and the HPCI room area. This is incorrectbecause it is only aligned here on a HPCI run with the main suction coming from theBuilding.c.Reactor building exhaust plenum and the HPCI gland steam condenser exhauster. Thisis incorrect because it is only manually aligned here on a HPCI run with the main suctioncoming from the Building.d.Primary containment exhaust ventilation line and the HPCI room area. This is incorrectbecause it is only manually aligned here on a HPCI run with the main suction coming fromthe Building.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21262001.K2.013.3Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR001-01-01(Attach if not previously provided)(including version/revision number)32Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New(Note changes or attach parent)XLast NRCNAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.434Comments:ES-401, Page 28 of 33L

0DifficultyLevel2CognitiveLevelLTopic AreaSystemsLast UsedDateExam BankAC icabilityRO:SRO:NLO:YYNQuestion TypeInactive?Multiple ChoiceNDescriptionList the power supplies for Off-Site sources.Related LessonsCOR0010101 OPS AC Electrical DistributionRelated ObjectivesLO 7.a.State the electrical power supplies to the following: Off-Site Sources of PowerRelated ReferencesCOR0010101R32-S-OPS AC ELECTRICAL DISTRIBUTIONP&ID Burns and Rowe 300110CFR55.41 b (4)Related Skills (K/A)262001.K2.01 Knowledge of electrical power supplies to the following: (CFR:41.7) Off-site sources of power (3.3 / 3.6)ROI3.3SROI3.6

QUESTION:3What are the electrical power supplies to the Cooper Station Off-Site Power Sources?a.161KV line from Auburn; and 69KV line from OPPD only.b.12.5KV South Underground Line; and the 69KV line from OPPD only.c.Auto Transformer via 345KV switchyard or the 161KV line from Auburn; and 69KV linefrom OPPDd.Auto Transformer via 345KV switchyard; and 69KV line through the Corn Field Substationto the 12.5KV North Overhead Line.ANSWER:c.3Auto Transformer via 345KV switchyard or the 161KV line from Auburn; and 69KV linefrom OPPDExplanation:The Start-up Transformer is energized from the Auto Transformer via OCB-1604 or from the161KV line via OCB-1606, The Emergency Transformer is energized by the 69KV line fromOmaha.Distractors:a.161KV line from Auburn; and 69KV line from OPPD only. The normal feed into thestation is from the 345KV switchyard was omitted from this option.b.12.5KV South Underground Line; and the 69KV line from OPPD only. Some of the 12.5KV system is powered from the South Underground Line, but it is not considered part ofthe power supplies to the station.d.Auto Transformer via 345KV switchyard; and 69KV line through the Corn Field Substationto the 12.5KV North Overhead Line. The 161 KV line was omitted and the NorthOverhead does not count as a power supply to the station.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21215004.K2.012.6Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR002-30-02(Attach if not previously provided)(including version/revision number)12Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New(Note changes or attach parent)XLast NRCNAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.437Comments:ES-401, Page 28 of 33L

010DifficultyLevel2CognitiveLevelLTopic AreaSystemsPointValue1Last UsedDateExam BankAC ElectricalDistributionResponseTime3Question TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceNDescriptionWhat are the power supplies to the SRM Channels andDetectors?Related LessonsCOR0023002R12-S-Source Range Monitor8.bRelated ObjectivesPredict the consequences a malfunction of the following would have on the SRMsystem: 24/48 VDC powerRelated ReferencesCOR0023002R12-S-Source Range Monitor10CFR55.41 b.(7)Related Skills (K/A)215004.K2.01Knowledge of electrical power supplies to the SRMchannels/detectorsROI2.6SROI2.8

QUESTION:4What are the power supplies to the SRM Channels/detectors?SRM Channels a.A & B are powered from Division I II24VDC System. 24VDC System and C & D are powered from Divisionb.A & C are powered from Division I 24VDC System.II 24VDC System and B & D are powered from Divisionc.A & B are powered from Division I 125 VDC System and C & D are powered fromDivision II 125 VDC System.d.A & C are powered from Division I 125 VDC System and B & D are powered fromDivision II 125 VDC System.ANSWER:b.A & C are powered from Division I II 24VDC System. 24VDC System and B & D are powered from DivisionExplanation:From the Student Text for Lesson COR002-30-02 the Power Supplies for the SRM subsystem ispowered from the 24 VDC system. Channel A and C are powered from Div 1 and channel Band D are powered from Div 2.Distractors: a.A & B are powered from Division I24VDC System and C & D are powered from Division 24VDC System is incorrect because SRM “B” and “D” are DIV II SRMs and “A” andII“C” are the DIV I SRMs.c.A & B are powered from Division I 125 VDC System and C & D are powered fromDivision II 125 VDC System. This is the normal power supply form 125 VDC DIV Icomponents and logics, however the SRMs are powered from the 24 VDC system.d.A & C are powered from Division I 125 VDC System and B & D are powered fromDivision II 125 VDC System. This is the normal power supply form 125 VDC DIV IIcomponents and logics, however the SRMs are powered from the 24 VDC system.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21215005.K3.073.2Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR002-01-02(Attach if not previously provided)(including version/revision number)22Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New6137Last NRC(Note changes or attach parent)NAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.436Comments:ES-401, Page 28 of 33H

/19/2005DifficultyLevel2CognitiveLevelHTopic AreaSystemsPointValue1Last UsedDateExam BankLicensed OperatorResponseTime4Question TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceNDescriptionCOR0022402, 100% power with 26-27 selected. APRM E is80% while all other APRMs are 100%.Related LessonsCOR0020102 OPS AVERAGE POWER RANGE MONITORCOR0022402 OPS ROD BLOCK MONITORSKL0124224ROD BLOCK MONITOR 00A030ARelated ObjectivesGiven a specific APRM malfunction, determine the effect on any ofthe following: Rod Block Monitoring System (RBM)Describe the RBM design features and/or interlocks that provide forthe following: Prevent control rod withdrawal.Given plant conditions, predict changes in the following Rod BlockMonitor System components/parameters: Trip referenceRelated References215005.K3.07Related Skills (K/A)Knowledge of the effect that a loss or malfunction of theAVERAGE POWER RANGE MONITOR/LOCAL POWERRANGE MONITOR SYSTEM will have on following: (CFR:41.7 / 45.4) Rod block monitor: Plant-Specific (3.2 / 3.3)ROISROI

QUESTION:56137The plant is operating at 100% power with control rod 26-27 selected. Average Power RangeMonitor (APRM) channel E is reading 80% while all other APRMs are reading 100%.What effect will this have on Rod Block Monitor (RBM) channel A?RBM channel A will a.initiate a Flow Reference Off-Normal rod block.b.immediately initiate an RBM Downscale rod block.c.enforce a less-than-conservative RBM Upscale rod block.d.automatically transfer to APRM C as its reference APRM.ANSWER:c.56137enforce a less-than-conservative RBM Upscale rod block.Explanation:The APRM's provide a reference power level for use in the Rod Block Monitor system. If theAPRM used to set up the RBM trip references is indicating 30% (*) power, the RBM is zeroed,and RBM outputs are bypassed. If the reference APRM is bypassed, the reference signal isautomatically provided by a second APRM. The reference APRM for RBM Channel A is APRMChannel E, with alternate APRM Channel C. The reference APRM for RBM Channel B is APRMChannel B, with alternate APRM Channel D.(*) The actual set point number is 27.5%, but the Tech Spec Basis number for assuming RBMwill mitigate the consequences of a RWE event with a peripheral control rod not selected is 30%.When the reference APRM reads low the RBM assumes that power is lower than it actually is andwill use the trip references for that power level band to assign rod blocks. The reference trip for80% power is less than the one for 90 and above.Distractors:a.The Rod Block Monitor uses Recirc Flow for the Flow Reference Off-Normal rod block, notthe Reference APRM.b.The RBM looks at the reference APRM signal to determine if it is downscale from it or not.So in this case it would not be.d.APRM C is not the alternate for RBM A.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21217000.K3.023.6Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR002-18-02(Attach if not previously provided)(including version/revision number)17Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New(Note changes or attach parent)XLast NRCNAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.437Comments:ES-401, Page 28 of 33H

ionDate0012/15/2010CognitiveLevelHTopic AreaSystemsCOR0021802 RCICPointValue1Last UsedDateResponseTime4Exam BankLicensedOperatorQuestion TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceDescriptionHow do Reactor pressure and RCIC speed response to flowcontroller failure?Related LessonsRelated ObjectivesCOR0020602001050A Describe the Core Spray system design features and/or interlocksthat provide for the following: Prevention of over pressurization ofCore Spray pipingCOR0021802217000.K3.02Related ReferencesRelated Skills (K/A)Knowledge of the effect that a loss or malfunction of the REACTOR COREISOLATION COOLING SYSTEM (RCIC) will have on Reactor vessel pressure

QUESTION: 6The Reactor Core Isolation Cooling (RCIC) System is in the pressure control mode of operation inaccordance with Procedure 2.2.67.1 Pressure Control with RCIC Hard card, following a reactorscram thirty minutes ago, with the following alignment: RCIC-FIC-91, RCIC flow controller is in Automatic.RCIC-FIC-91, RCIC flow controller Set tape is set to 400 GPM.Shortly after the alignment was established the following occurs: RCIC-FT-58, discharge flow transmitter has failed high such that the flow sensedby the RCIC-FIC-91 is 500 gpm irrespective of actual RCIC flow.How do Reactor pressure and RCIC speed response to this failure?Reactor PressureRCIC Speeda.slowly risesrises and stabilizes at 5000 RPMb.slowly riseslowers to idle speedc.slowly lowersrises and stabilizes at 5000 RPMd.slowly lowerslowers to idle speedANSWER: 6b.slowly riseslowers to idle speedExplanation:The maximum demand (500 gpm) to the RCIC flow controller will cause FIC-91 to run speed atminimum, idle speed.Distractors:a.It is true that reactor pressure will rise because the RCIC Turbine is no longer providingpressure control for the vessel. The speed will lower not rise.c.Reactor pressure will rise because the RCIC Turbine is no longer providing pressurecontrol for the vessel, and the speed will lower not rise.d.Reactor pressure will rise because the RCIC Turbine is no longer providing pressurecontrol for the vessel.

ES-401Sample Written ExaminationQuestion WorksheetExamination Outline Cross-Reference:Form ES-401-5LevelTier #Group #K/A #Importance RatingROSRO21209001.K4.013.2Proposed Question: See AttachedProposed Answer:See AttachedExplanation: See AttachedTechnical Reference(s)Lesson COR002-06-02(Attach if not previously provided)(including version/revision number)21Learning Objective:Question Source:Question History:ExamQuestion Cognitive Level:10 CFR 55 ContentSee Attached(As available)Bank #Modified Bank #New1691Last NRC(Note changes or attach parent)NAMemory or Fundamental KnowledgeComprehension or Analysis55.4155.437Comments:ES-401, Page 28 of 33L

ast UsedDateCOR0020602 CORE SPRAYLicensedOperatorResponseTime4Topic AreaSystemsExam BankQuestion TypeApplicabilityRO:SRO:NLO:YYNInactive?Multiple ChoiceDescriptionRelated LessonsRelated ObjectivesCOR0020602001050A Describe the Core Spray system design features and/or interlocksthat provide for the following: Prevention of over pressurization ofCore Spray pipingCOR0020602209001.K4.01Related ReferencesRelated Skills (K/A)Knowledge of LOW PRESSURE CORE S

c. Auto Transformer via 345KV switchyard or the 161KV line from Auburn; and 69KV line from OPPD . Explanation: The Start-up Transformer is energized from the Auto Transformer via OCB-1604 or from the 161KV line via OCB-1606, The Emergency Transformer is energized by the 69KV line from Omaha. Distractors: a.

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