SPENT FUEL COOLING Flashcards
(10 cards)
What happens to SF-P-1A/B during an ES signal?
SF-P-1A/B both load shed on ES and 27/86 lock out on ES + UV.
What is the minimum boron concentration required in the spent fuel pool per T.S. 4.1-3?
600 ppm.
What is the maximum allowable temperature for the spent fuel pool before entering AOP-35?
Maintain SFP temperature <130°F; at 160°F, enter AOP-35.
What must be ensured about siphon break valves in the spent fuel pool?
Siphon break valves must be locked open at all times.
What happens if the gate between pools fails and one pool drains?
The level goes to 330’ (10’ above the fuel).
What valve automatically opens on pump start in the spent fuel cooling system?
NS-V-16 auto opens on pump start.
How is the fuel transfer canal normally drained?
The fuel transfer canal is normally drained to LWDS via SF-P-2.
Which pumps are used to fill and drain the fuel transfer canal?
SF-P-1A/B are used to fill and drain the FTC.
What is the purpose of SF-P-2 in the spent fuel cooling system?
SF-P-2 is used to clean up FTC/SFP water and transfer FTC water to BWST to minimize dose.
Which pool has a siphon break, and which does not?
The “A” pool and Cask Pit have siphon breaks; the “B” pool does not.
