Safety and Security of Commercial Spent Nuclear Fuel Storage Public Report (2006) / Chapter Skim
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Pages 101-102
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From page 101... ...
For this study, the significance of this closed fuel cycle design is that this entire generation of more than 100 reactors was designed with small spent fuel pools, relying on prompt shipment away from the reactor to the reprocessing plant to make room for later discharges of spent fuel. Early spent fuel shipping casks were being designed with active cooling systems to support shipment of fuel less than a year out of the reactor to a reprocessing plant.
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From page 102... ...
Power reactors are refueled, and spent fuel is discharged to the storage pool, every one to two years. The decay heat power of recently discharged spent fuel dominates the heat load of all the spent fuel in the pool, both freshly discharged and old, since the decay heat from a spent fuel assembly decreases by one to two orders of magnitude in the first year after it is removed from the reactor increasing the capacity of the spent fuel pool by reracking, that is, modifying the storage racks to provide for closer spacing of the fuel assemblies,1 allows older fuel to be print version of this publication as the authoritative version for attribution.
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