Week 13-15 Flashcards
Using Safety Function Set 1, the CRS has identified the success paths needed to mitigate the event in progress.
- RC-2
- MVAC-2 In Jeopardy
- MVDC-1
- IC-2 In Jeopardy
- PC-3 In Jeopardy
- HR-1
- CI-1
- CTPC-1
Using the table below identify the correct performance order.
A. MVAC-2, IC-2, PC-3, RC-2
B. MVAC-2, PC-3, IC-2, RC-2
C. RC-2, MVAC-2, MVDC-1, IC-2
D. MVAC-2, IC-2, PC-3, MVDC-1
A. MVAC-2, IC-2, PC-3, RC-2
Using LMFRP Safety Function Set 2, the CRS has identified the following success paths needed to mitigate the event in progress.
- RC-1
- MVDC-1
- MVAC-3
- IC-2 In Jeopardy
- PC-7
- HR-2 In Jeopardy
- CI-2
- CTPC-1
Which ONE of the following identifies the correct performance order?
A. IC-2, HR-2, RC-1, MVAC-3
B. PC-7, IC-2, HR-2, MVAC-3
C. MVAC-3, IC-2, HR-2, MVDC-1
D. IC-2, HR-2, MVDC-1, MVAC-3
D. IC-2, HR-2, MVDC-1, MVAC-3
NOTE - Look at shaded regions not having to readdress
- Tcold 210°F.
- Pressurizer pressure 250 psi.
- Pressurizer level 50%.
- All rods inserted.
- No radiation monitors in alarm.
- Train “A” shutdown cooling is in service; “A” LPSI is the running pump.
- “B” Diesel generator is tagged out for a maintenance outage.
- Train “A” LTOP relief valve lifts to 100% open and will not reseat.
- A loss of offsite power occurs, diesel generator “A” trips on differential and is damaged.
Which success path should be addressed first?
A. MVAC-2
B. HR-2
C. IC-2
D. MVAC-3
- What safety function criteria are not met?
A. MVAC, IC, HR.
B. IC, PC, CI.
C. MVAC, HR, CTPC.
D. HR, CI, CTPC.
D. MVAC-3
A. MVAC, IC, HR.
- Mode 6.
- Refueling operations in progress.
- The refueling machine is moving to retrieve an irradiated fuel assembly in the upender.
- The CRS notifies the LSRO that there is a rapidly lowering fuel pool level and has implemented the LMEOP.
- The CRS directs the LSRO to place the fuel in a safe condition, and close PCN-V118 Fuel Transfer Tube Isolation Valve.
Which of the following describes the required actions for the proper safe location of the fuel and location of the upender/carriage?
The LSRO takes action to place the:
A. Fuel in the upender and retain the upender vertical. Fuel Carriage either on the Fuel poolside or Containment.
B. Fuel in the intermediate storage rack and send the fuel carriage to the Fuel Building.
C. Fuel in the reactor vessel and retain the fuel carriage in containment.
D. Fuel grappled at the uplimit on the RFM and lower the upender horizontal.
C. Fuel in the reactor vessel and retain the fuel carriage in containment.
- Unit 1 is operating in Mode 5 with SDC in service.
- The ‘A’ LPSI pump is operating.
- An inadvertent Train ‘A’ RAS occurs.
Based on these conditions, what actions, if any, are necessary to maintain and/or restore the plant to a stable condition?
A. Override and open the minimum recirc valves to restore minimum flow protection for the ‘A’ LPSI pump.
B. Override and open the LPSI injection valves to restore SDC to service.
C. No actions should be necessary, since the RAS is only Train ‘A’.
D. Override and start the ‘A’ LPSI pump and restore SDC to service.
D. Override and start the ‘A’ LPSI pump and restore SDC to service.
- A large break LOCA has occurred
- 40EP-9EO03, LOCA is in use
- All systems and components have operated as designed
- RWT level lowers to 9.0% on channels “A” and “C”
- RWT level lowers to 10.0% on channels “B” and “D”
- Assume no further operator action.
What is currently the suction source of the High Pressure Safety Injection pumps?
A. Refueling Water Tank.
B. Containment sump.
C. Spent Fuel Pool.
D. Refueling Water Tank and Containment sump.
D. Refueling Water Tank and Containment sump.
The HPSI cold leg injection orifice is used during simultaneous hot and cold leg injection to:
A. provide instrumentation to measure flow to the hot and cold leg injection headers.
B. prevent exceeding runout condition in the HPSI pumps to prevent pump cavitation.
C. help balance SI flow to the hot and cold leg injection headers by being sized to allow approximately 50% flow.
D. provide minimum recirculation flow for the HPSI pumps to prevent overheating.
C. help balance SI flow to the hot and cold leg injection headers by being sized to allow approximately 50% flow.
- A LOCA has occurred on Unit 1.
- Approximately one minute after the Train B Essential Chiller started, a fault locks out PBB-S04.
- RCS pressure is 750 psig and lowering.
Based on this, the expected safety injection would be:
A. increasing LPSI and HPSI flow into all reactor coolant loops.
B. increasing HPSI flow into all reactor coolant loops.
C. increasing HPSI flow into reactor coolant loops 1A and 1B only.
D. increasing LPSI and HPSI flow into reactor coolant loops 1A and 1B only.
B. increasing HPSI flow into all reactor coolant loops.
- Pressurizer pressure is 1250 psia.
- Pressurizer level is 45% and rising.
- HPSI injection is 330 gpm/cold leg (acceptable flow).
- Reactor coolant system is 28°F subcooled.
- Reactor vessel level monitoring system indicates 100% in plenum and upper head.
- No reactor coolant pumps are running.
- Containment temperature and pressure are 195°F and 11 psig, respectively.
- SIAS, CIAS, MSIS, and CSAS have actuated.
- A cooldown is in progress using steam generators, both WR levels are 50% and rising.
WHICH ONE of the following identifies the action the Control Room Supervisor is to direct concerning high pressure safety injection use?
A. HPSI flow may be throttled to stabilize pressurizer level .
B. HPSI flow may be throttled until HPSI flow is the same as break flow.
C. Continue maximum injection flow until subcooling is at least 24°F.
D. Continue maximum injection flow until subcooling is at least 44°F.
D. Continue maximum injection flow until subcooling is at least 44°F.
- Unit 1 is operating at rated power.
- LPSI “A” becomes inoperable at 1200 on 10-10.
- LPSI “B” becomes inoperable at 1800 on 10-15.
- LPSI “B” is restored to operable status on 2000 on 10-15.
Assuming extensions are applied (if applicable), when must LPSI ‘A’ be restored to operable status before further action is required?
A. 1200 on 10-17.
B. 1200 on 10-18.
C. 2000 on 10-18.
D. 1800 on 10-19.
A. 1200 on 10-17.
Shutdown cooling is used to cool the Reactor Coolant System from a maximum of _____ to the temperature required for refueling.
A. 250°F.
B. 350°F
C. 410°F
D. 500°F
B. 350°F
The Train ‘B’ Essential Chiller is declared inoperable and the crew begins to perform the required actions of 3.7.10, Condition A. Assuming LCO 3.0.6 is implemented, how should the Operating Crew treat AFW?
Train ‘B’ AFW is considered……
A. operable since EC provides minimal support for this safety function.
B. operable as long as the required actions for EC are being implemented.
C. inoperable and the required actions of 3.7.5 must be entered.
D. inoperable, however the conditions and required actions associated with AFW are not required to be entered.
D. inoperable, however the conditions and required actions associated with AFW are not required to be entered.
A loss of safety function exists when, ….
A. assuming a single failure, a fission product barrier will be lost.
B. not assuming a single failure, a safety function assumed in the UFSAR cannot be performed.
C. assuming a single failure, a safety function assumed in the UFSAR cannot be performed.
D. not assuming a single failure, a fission product barrier will be lost.
B. not assuming a single failure, a safety function assumed in the UFSAR cannot be performed.
When does entry into Mode 5 from Mode 6 occur?
A. The first reactor head closure bolt is de-tensioned.
B. All reactor head closure bolts are fully tensioned.
C. All reactor head closure bolts are fully tensioned and cold leg temperature > 210 degrees.
D. RCS cold leg temperature exceeds 135 degrees.
B. All reactor head closure bolts are fully tensioned.
Which of the following describes the operational bypass associated with the Core Protection Calculator trips?
These trips are automatically…
A. placed in service when power increases to 1E-4%.
B. bypassed when power drops to 1E-2%.
C. bypassed when power drops to 1E-4%.
D. placed in service when power increases to 1E-2%.
A. placed in service when power increases to 1E-4%