Westinghouse Electric Co. has developed an emergency fuel pool cooling system to keep spent nuclear fuel cool in emergency situations, including the loss of plant power.
The system consists of a permanently installed primary cooling loop located inside the reactor building or spent fuel pool building, and a mobile secondary cooling loop. The secondary cooling loop is stored off-site and located outside the reactor building for either emergency or pre-planned use. The company said this reduces the time needed for assembly and startup. The system can also be operated in the temporary cooling mode during refueling outages.
The system includes mobile diesel generators, air compressors, switchgear and other support equipment required to operate the stand-alone system. It is also designed to be a stand-alone backup system to remove decay heat from the spent fuel pool during site emergencies when off-site electrical power or emergency diesel power in unavailable. The system also allows for the addition of makeup water so that safe spent pool water levels are maintained.
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