PC (Fuel Pool Cooling) Flashcards
The unit is in Mode 6. Fuel Offload is in progress with 5 assembles still in the core. Diesel Generator “A” outage is in progress. Cooling water to the in service PC heat exchanger has been lost. SFP temperature is now increasing and “FUEL POOL TEMP HI” (E0204C) on PCN-E02 has been received. Which of the following should the CRS first use to recover SFP cooling:
A. 40EP-9E009, Functional Recovery Procedure.
B. 40AO-9ZZ03, Loss of Cooling Water Procedure.
C. 40AO-9ZZ23, Loss of Spent Fuel Pool Level or Cooling.
D. 40OP-9PC05, Augmentation of Fuel Pool Cooling with Shutdown Cooling.
Answer: C
In reference to Tech Spec 3.7.14 (Fuel storage pool water level), the minimum level in the fuel pool is based on…
A. providing adequate NPSH for the fuel pool cooling pumps.
B. absorbing the iodine released during a fuel handling accident.
C. satisfying the requirements to be considered a borated water source.
D. ensuring that decay heat generated in the pool is adequately removed.
Answer: B
Design features prevent Spent Fuel Pool Level from inadvertantly draining down to less than:
A. 130 ft. 2 in.
B. 130 ft. 6 in.
C. 131 ft. 2in.
D. 131 ft. 10 in.
Answer: A
The Unit is in Mode 6 with core off-load is in progress. Chemistry calls and reports that the Boron concentration is 2290 ppm in the RCS and 3010 in the refueling canal. The COLR limit is specified as 3000 ppm. What are all the action(s) if any that should be taken.
A. Suspend positive reactivity additions as soon as possible.
B. Initiate action to restore Boron concentration to within limits, suspend positive reactivity additions and core alternations immediately.
C. No action is required, refueling boron concentration is in specification.
D. Initiate action to restore Boron concentration to within limits, suspend core alternations within one hour.
Answer: B
