20 Random Questions, SRO only, all Exam Years
Results
#1. Given the following: – At 12:00 the threshold value for an UNUSUAL EVENT was exceeded; with indication available in the main control room. – At 12:08 the threshold value for an ALERT was exceeded; with indication available in the main control room. – At 12:09 the Shift Emergency Director classified an UNUSUAL EVENT based on the associated main control room indication. – At 12:13; the Shift Emergency Director classified an ALERT EVENT based on the associated main control room indications. – At 12:18 the Shift Emergency Director notified the required agencies of the UNUSUAL EVENT. Based on the above conditions; which of the following identifies the latest time at which the State/Local notifications of the ALERT EVENT classification can be initiated and still meet notification requirements in accordance with EP-AA-111 Emergency Classification and Protective Action Recommendations and EP-AA-114 Notifications ?
#2. A major event has occurred on Unit-1.The following conditions exist several hours later: Drywell Pressure is 10 psig and steady. Suppression Chamber pressure is 5 psig and steady. The hydrogen recombiner is in operation for mixing. Division 1 and 2 Post-LOCA monitors indicate 7% hydrogen in the Drywell andrising slowly. Division 1 and 2 Post-LOCA monitors indicate 2% oxygen in the Drywell andrising slowly. Containment venting per LGA-VQ-02 EMERGENCY CONTAINMENT VENThas just been started IAW LGA-011 HYDROGEN CONTROL.The following sequence of events take place next: The NSO reports oxygen levels in the containment are now at 4% and steady. Then 1N62-P600-B304 STATION VENT STACK RADIATION HIGH alarms.What will the Unit Supervisor direct next?
#3. The plant was operating at full power. A loss of feedwater followed by a reactor scramoccurred. Plant conditions are as follows: – Reactor pressure is 900 psig; and MSIVs have failed open. – HPCS and RCIC are inoperable – Condensate/Feedwater cannot be restored – Both CRD pumps are running – RPV level is -75 inches on WR; decreasing at a rate of about 15 inches/min. – Drywell Pressure is 1.6 psig.The Shift Supervisor has executed LGP 3-2. The appropriate action per LGA-001 is to . . .
#4. What weather condition would trigger an On-line risk re-evaluation in Paragon per the On-Line Work Control Process?
#5. Unit 1 was in Mode 5 with refueling operations in progress. Control rod 14-23 was to bewithdrawn for replacement of the drive mechanism. Control rod 14-23 was notched out toposition 02 to test the one-rod-out interlock in accordance with Attachment C of LOS-RD-SR4;Control Rod Operations in Mode 5. As the NSO was testing the one-rod-out interlock; Controlrod 10-27 was selected on the second of three attempts to select another control rod.WHAT actions are required in accordance with Technical Specifications?
#6. Given the following plant conditions:- Suppression Pool level is +15 inches and slowly increasing- Suppression Chamber pressure is 11 psig and slowly increasing- Drywell pressure is 15 psig and slowly increasing- Suppression Pool temperature is 190F and steady- RPV level is -165 inches and decreasing- RPV pressure is 200 psig and steady- All control rods are full-in- RCIC is injecting into the RPV |- RR Pumps are in Pull-To-Lock- MSIVs are isolatedWhen returmed to service; the Unit Supervisor should direct the 2B RHR Pump to be used … !
#7. If an irradiated fuel bundle is damaged in the fuel pool during refueling operations; the PRIMARY concern is a higher level of (1) ; and this condition will be made worse if (2) .
#8. With Unit 1 at 50% power; a malfunction in the feedwater level control system causes reactorwater level to decrease to +5 inches. After the transient subsides; the following conditionsexist: – reactor pressure 1050 psig decreasing – reactor water level 18 inches steady – main turbine tripped – power range indicators unavailable – IRMs fully insertedThe reactor operator reports that neutron level is steady and reading 100 on Range 10 of theIRMs. Reactor power is _____(1)_____and LGA 010; “Failure to Scram” requires thatRecirculation pumps _____(2)_____.
#9. A breaker trip event occurred on Unit-2; some of the equipment de-energized islisted below:- 2A Diesel Cooling Water Pump- 2C and 2D RHR Service Water Pump- 2B Fuel Pool Emergency Makeup Pump- 2B Primary Containment Vent Fan- 2B Primary Containment ChillerTechnical Specification 3.6.3.1 (Primary Containment Hydrogen Recombiner) is not being metbecause (1) Hydrogen Recombiner is OPERABLE for Unit-2; and the UnitSupervisor should direct actions to recover power per LOA-AP-201; Unit-2 AC Power SystemAbnormal for (2)
#10. LGA-001 and LGA-003 were entered due to a steam leak inside Primary Containment. The following conditions exist: Suppression Chamber Sprays are in service Drywell pressure is 5 psig and rising slowly Drywell temperature is 290oF and rising slowly Suppression Chamber pressure is 4 psig and rising slowly Suppression Pool level is 720 ft and steady Which of the following identifies the use of Drywell sprays and why? Drywell Sprays&
#11. Which of the following must occur in order to prevent exceeding 10CFR100 ReactorSite Criteria limits in the event of a design basis fuel handling accident?
#12. A Unit startup is in progress with the following conditions: The reactor is critical; below the point of adding heat. The reactor is on an infinite period. Reactor power is on the Intermediate Range Monitors (IRMs) Range 2. The unit NSO withdraws several control rod notches per the sequence package and takes the following readings to determine reactor period: Initial power 20 on IRM Range 2. Final power 40 on IRM Range 2. Time to change from initial to final power was 30 seconds. Annunciator 1H13-P603-A306; SRM Short Period; alarms. Based on the above information and calculated reactor period; the SRM SHORT PERIOD annunciator (1) be alarming; and the Unit Supervisor shall direct the NSO to (2) .
#13. Operators trying to exit the reactor building reported that only one door at the DG corridorairlock can be opened and annunciator “RB 3 DOOR AIRLOCK F21 UNDERVOLTAGE”alarmed. The Unit Supervisor dispatched operators to the reactor building to complete requiredactions.In accordance with LOA-AP-101 Attachment L; since power is lost to _____(1)_____; the UnitSupervisor should direct the operators to _____(2)_____.
#14. Using the attached ODCM calculation and given the following: LOP-VQ-04; Startup and Shutdown and Operations of the Primary Containment Vent and Purge System; requires an Offsite Dose Calculation for Drywell Purge. Floor drain sumps are running every 2 (two) days Radiation monitors are 100 cpm and stable Time now is 1200 10/22/12; what actions are required?
#15. Unit-1 is performing a normal unit shutdown. The containment is being de-inertedwhen annunciator 1H13-P603-B501; Pri Cnmt Pressure Hi/Lo is received. Drywell pressureindication is verified to read negative 0.6 psig (-0.6 psig).The NEXT action required by Technical Specifications is to …
#16. Unit-1 has just scrammed due to a loss of the SAT – LGP-3-2; Reactor Scram; is being performed – LOA-AP-101; Unit-1; AC Power System Abnormal; is being performed Two minutes later suppression pool temperature is 106F and rising. Which of the following describes the required actions to be directed by the Unit-1 Control Room Supervisor?
#17. RHR ‘B’ is operating in the Suppression Pool Cooling mode following a Group 1 Isolation at1300 on November 22; 2006. Select the statement below that describes the impact on theRHR ‘B’ if the RHR B room temperature rises to 185F by 1500 on the same day.
#18. Which of the following events would require notification to State and Local authorities and an ENS notification?
#19. Unit-1 is being shutdown for emergent maintenance. The Shutdown CoolingIsolation Interlocks have just cleared and Main Turbine Bypass valves are being used tocontro! reactor pressure.While troubleshooting ADS Accmulator alarms; the FIN Team reports that the ADSAccumulator Supply header pressures are reading 145 psig.Based on the above information; which one of the following is appropriate for the UnitSupervisor?
