Week 8 Flashcards
• Unit 1 is operating at rated power.
• AFB-P01 has been out of service for 4 hours.
• NBN-X03 trips on sudden pressure.
• Diesel Generator A fails to start.
• All other equipment is operable.
Based on these conditions, the operating crew is expected to:
A. immediately initiate action to restore at least one AFW train to operable status.
B. restore at least one AFW train to operable status within 1 hour or be in at least Mode 3 within the next 6 hours.
C. restore either AFA-P01 or AFB-P01 to operable status within 1 hour or be in at least Mode 3 within the next 6 hours.
D. immediately initiate action to restore at least one AFW train to operable status or be in at least Mode 3 within the next 6 hours.
A. immediately initiate action to restore at least one AFW train to operable status.
• Unit has been at 100% power for the last 200 days.
• Chemistry Supervisor has just informed Shift Manager that SR 3.5.5.3 verifying RWT boron concentration is > 4000ppm and < 4400ppm, has not performed for the last 18 days.
• The test frequency for SR 3.5.5.3 is 7 days.
• A risk evaluation has been performed for this situation.
What is the status of LCO 3.5.5, The RWT shall be OPERABLE, and reason?
LCO 3.5.5 is…
A. NOT met, boron concentration must be verified within 1 hour.
B. NOT met, boron concentration must be verified within 8 hours.
C. met, the missed SR must be performed within 24 hours.
D. met, the missed SR must be performed within 7 days.
D. met, the missed SR must be performed within 7 days.
• Unit is operating in Mode 1.
• Engineering notifies the control room that degraded voltage relay 727-6 on PBB-S04 has a trip setpoint of 3678 Vac.
• The time delay for this relay was found to be 32 seconds.
• The trip setpoint of all other degraded voltage relays have not changed when compared to
their last channel calibration value.
List the LCO(s) condition(s) that would be entered due to this event (if any). Include the LCO, Condition, Required Action, and Completion Time.
Place the channel in trip or bypass in one-hour (Tech Spec 3.3.7, Condition A)
• Unit 1 is operating at 100% power.
• The upper two sensors in the RVLMS Train ‘B’ have failed and are not functioning.
• All other RVLMS sensors are functioning normally.
Based on these conditions, Technical Specification LCO 3.3.10 is…
A. met.
B. not applicable.
C. not met, enter Condition A, Action A.1.
D. not met, enter Condition C, Action C.1.
A. met.
Which of the following is a requirement to consider the RCS loops are filled?
A. The RCS gas concentration must be limited or otherwise controlled
B. The RCS fill and vent procedure must be completed
C. At least one Reactor Coolant Pump must be in operation
D. Two Shutdown Cooling Trains must be OPERABLE
A. The RCS gas concentration must be limited or otherwise controlled
During LPSI ‘A’ surveillance testing, the pump develops insufficient differential pressure and does not meet acceptance criteria. What actions, if any, (including completion time) would you take while in MODE 1?
Enter both Tech Spec 3.5.3 Condition ‘A’ and TLCO 3.5.201 Condition ‘A’.
Both have 7 day restoration completion times.
- Unit 1 is in mode 3.
- RCS Temperature is 565°F
- RWT Level = 84%.
- RWT Boron = 4010 ppm.
- RWT Temp = 78°F.
List the applicable Tech Spec conditions, actions and completion times.
Enter LCO 3.5.5 Condition ‘B’ (0.25 points) to restore level to greater than or equal to
84.3% within 1 hr (1.0 points).
Which of the Containment Isolation Valves may conditionally be put in the OPEN position, and
still remain OPERABLE?
A. Low Pressure Safety Injection Isolation Valve SIB-UV-625
B. Auxiliary Feedwater Isolation Valve AFC-HV-36
C. Auxiliary Feedwater Isolation Valve AFA-HV-37
D. Low Pressure Safety Suction Isolation Valve SIA-UV-655
A. Low Pressure Safety Injection Isolation Valve SIB-UV-625
• The plant is at 100% Power.
• AFN-P01 is tagged out of service to repair a bearing.
• Maintenance wants to perform a work order to change the oil in AFB-P01.
What additional Technical Specification action would this require?
A. 3.7.5 action A
B. 3.7.5 action B
C. 3.7.5 action C
D. 3.7.5 action D
C. 3.7.5 action C
• The plant is at 100% Power.
What is the maximum expected difference between actual and predicted Boron concentration that would still meet Technical Specification reactivity balance requirements?
± 100 ppm
Reference: TS Bases, page B 3.1.3-3, “When measured core reactivity is within 1% Δk/k of the predicted value at steady state thermal conditions, the core is considered to be operating within acceptable design limits. Since deviations from the limit are normally
detected by comparing predicted and measured steady state RCS critical boron concentrations, the difference between measured and predicted values would be approximately 100 ppm (depending on the boron worth) before the limit is reached.”
