| 摘要 |
The invention relates to a nuclear fuel storage unit ( 10 ) which includes a vessel ( 12 ) and at least one tubular member ( 22 ) which extends through the vessel ( 12 ), opposite ends thereof opening out of the vessel ( 12 ) at spaced apart positions, to define an internal coolant flow path and such that a fuel receiving cavity ( 24 ) is defined between an outer surface of the at least one tubular member ( 22 ) and an inner surface of the vessel ( 12 ). The configuration of the fuel receiving cavity ( 24 ) is such that the packing density and geometry of fuel received in the fuel receiving cavity ( 24 ) is such that the fuel remains sub-critical. The storage unit ( 10 ) includes also at least one fuel loading passage ( 26 ) leading into the fuel receiving cavity ( 24 ) whereby fuel to be stored can be introduced into the fuel receiving cavity ( 24 ).
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