| 摘要 |
A control arrangement for use with nuclear fuel is configured as a control rod ( 32 ) for insertion into a guide tube ( 24 ) of a nuclear fuel assembly ( 20 ). The control rod ( 32 ) includes a housing ( 34 ) and solid ellipsoidal elements ( 44 ) of neutron absorber material loaded into a leading end ( 36 ) of the housing ( 34 ). The solid ellipsoidal elements ( 44 ) are generally solid spheres formed from a metal-based material. Alternatively, the housing of the control arrangement is the guide tube ( 24 ), and the solid ellipsoidal elements ( 44 ) are loaded into the guide tube ( 24 ) in preparation for spent fuel storage of the nuclear fuel assembly.
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