Core-control assembly with a fixed fuel support

Details Core-control assembly with a fixed fuel support Core-control assembly with a fixed fuel support

1992-06-08

1993-08-31

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376233, 376353, 376362, G21C 700, G21C 1900

Patent

active

052415708

ABSTRACT:
In a boiling-water nuclear reactor, a core-control assembly comprises a control rod, a fuel support, a control-rod guide tube, a control-rod drive, and a control-rod-drive housing. The fuel support is welded to the control-rod guide tube. To remove the control-rod drive, the reactor vessel can be opened and the adjacent fuel bundles removed from the fuel support. Then the control-rod can be rotated after clearing the fuel support. The control rod is then rotated to decouple its bayonet connection to the control-rod drive. The control rod can then be lifted out of the reactor. This arrangement allows a control rod to be replaced without handling of the fuel support. In addition, the fuel support can be more securely installed since it does not need to be removed.

REFERENCES:
patent: 4904443 (1990-02-01), Carruth

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