Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1991-09-30
1993-11-02
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376364, G21C 332
Patent
active
052590100
ABSTRACT:
The spacer pin of this invention is preferably threadably secured to a thermal shield normally found within reactor vessels. It comprises a main body having a cavity therein which houses a locking assembly that alternately engages or disengages the threads of the thermal shield as desired. Ideally, as bolt means are is rotated within the main body, locking keys are either moved into engagement with the threads of the thermal shield or the locking keys are removed from such engagement with the thermal shield. In this fashion, the spacer pin may be locked onto or unlocked from the thermal shield as desired. A locking cap prevents the bolt means from coming unthreaded during use and also insures that the spacer pin remains secured to the thermal shield.
REFERENCES:
patent: 4094558 (1978-06-01), Christiansen
patent: 4668469 (1987-05-01), Widener
patent: 4738820 (1988-04-01), Wilson
patent: 4996021 (1991-02-01), Bryan
Brown Steve K.
Dixon Larry D.
Orr John A.
B&W Nuclear Service Company
Edwards Robert J.
Hoelter Michael L.
Voss Frederick H.
Walsh Donald P.
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