Control rod housing support bars with radiation shields

Details Control rod housing support bars with radiation shields Control rod housing support bars with radiation shields

1993-07-16

1994-06-14

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Miscellaneous

376219, 376239, 376277, 376287, G21C 1900

Patent

active

053217322

ABSTRACT:
A boiling water reactor control rod drive housing support bars having radiation shields to limit the travel of a control rod in the event that a control rod housing is ruptured and protect persons working under the reactor vessel from radiation exposure. The radiation shield includes radiation shield cups for surrounding the bottom portion of a control rod drive. The radiation shield cups are placed on support bars located in rows on opposing sides of the control rod drives. The radiation shield may be easily raised and lowered automatically by the control rod drive installation/removal machine.

REFERENCES:
patent: 4752434 (1988-06-01), Savarg
patent: 4820058 (1989-04-01), Wilson et al.
patent: 4859409 (1989-08-01), Matusz et al.
patent: 4888149 (1989-12-01), Bryan

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