20 Random Questions, SRO only, all Exam Years
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#1. 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)_____.
#2. A Unit 2 Startup is in progress; with reactor power at approximately 45 percent. ReactorRecirculation Pumps are in fast speed. The TDRFP A is providing feedwater flow in AUTO;TDRFP B is operating on minimum flow with it’s M/A station in MANUAL. As the UnitSupervisor you have directed the unit assist NSO to perform LOS-FW-SR1; Turbine FeedwaterPump Surveillance on TDRFP B.During performance of the Low Pressure Stop Valve test; the valve continued to stroke to theClosed position when the Test pushbutton was released. Which of the following describes:(1) the status of TDRFP B; and(2) the direction you should give to the unit assist Reactor Operator?
#3. Unit 2 is shutdown with the following conditions: – A Group I isolation occurred due to personnel error. – Reactor pressure is being controlled from 900-1000 psig by RCIC in the pressure control mode. – RB North HCU radiation level has increased to 20 mr/hr. – RCIC pipe route temperature has increased to 175F. Which of the following describes the required actions? PROVIDE LGA-002 (with entry conditions blanked out)
#4. Refer To Plant Process Computer PPC Turbine DisplayU-1 was at 100% power when the Unit scrammed with the following conditions. Condenser vacuum is at 3 inches backpressure Hg and stable.What are the required actions to be directed by the Unit Supervisor?
#5. Unit 2 was at 93% reactor power when the following event took place: A HIGH STEAMLINE FLOW signal has resulted in a Group 1 isolation. There was a report from the field that steam was coming from the Div 3 switchgear room. Control rods DID NOT fully insert. SBLC has been initiated. RPV water level is currently-145″ and being intentionally lowered. Low-Low Set SRVs are controlling RPV pressure.Would it be required for the US to direct installation of LGA-MS-01; “MSIV ANDMSL DRAIN RX LO-LO-LO LEVEL ISOLATION DEFEAT” and why or why not?
#6. 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) .

#7. The reactor was at rated power when a LOCA occurred. Present plant conditions include the following: All control rods inserted RPV pressure is 100 psig and lowering slowly RPV water level is 60 (inches) and rising slowly 1 Condensate Pump is injecting B and C LPCI are injecting Suppression Pool Level is 690 ft on 1LR-CM027 (Wide/Narrow Range SP LVL) and slowly rising Suppression Chamber pressure is 5 psig and slowly rising Suppression Pool temperature is 210F Suppression Chamber and Drywell Sprays are running. Which of the following shall the SRO direct next?
#8. You have been performing the duties of the Field Supervisor for the first 4-hours of the shift when a casualty occurs and it is necessary for you to relieve the Unit Supervisor on the affected Unit. Which one of the following are REQUIRED to be performed prior to assuming command and control of the affected Unit during the casualty situation? 1. Review appropriate abnormal conditions and initiating events. 2. Review the current status of the EOP flowcharts. 3. Receive permission from the Shift Manager. 4. Turnover to another qualified Field Supervisor.
#9. Both Units were at 100% power when a fire in the main control room required its evacuation. The crew has entered LOA-FX-101(201); Unit 1(2) Safe Shutdown with a Fire in the Control Room OR AEER. The initial actions in the control room for the Unit NSOs were completed prior to evacuation. It has been 20 minutes since the evacuation and RPV pressure control has yet to be fully established. The fire has just been reported extinguished. (1) Which of the following is the correct method of RPV pressure control? (2) What is the HIGHEST emergency action level that has been met?
#10. Unit 2 is operating at rated power with the following conditions: Instrument Maintenance is performing calibration checks of the ‘C’ Narrow Range Level instrument and reports that the trip setpoint is currently 55.7 inches and cannot be adjusted lower at this time. Which one of the following describes the applicable requirements? Provide T.S. pg. 3-86 to 3-89
#11. Unit 1 was operating at 100% power when: All running Circulating Water Pumps have tripped. A manual reactor scram is inserted. 3 control rods remain at position 48. LGA-010; Failure to Scram; directs the Unit Supervisor to stabilize RPV pressure below 1059 psig using main turbine bypass valves. What order will the Unit Supervisor give concerning pressure control?
