Reconstitutable control assembly having removable control rods w

Details Reconstitutable control assembly having removable control rods w Reconstitutable control assembly having removable control rods w

1988-12-15

1989-12-19

Dehrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Control component for a fission reactor

376260, 376446, 376463, G21C 710

Patent

active

048881511

ABSTRACT:
A reconstitutable control assembly has a spider structure which supports control rods by detachable attachment joints. Each attachment joint includes a hollow connecting finger on the spider structure and an elongated detachable split upper end plug on each control rod. The split upper end plug includes a pair of separate upper and lower plug portions. The upper plug portion has upper, middle and lower sections, whereas the lower plug portion has upper, middle and lower segments. The upper section of the upper plug portion is rigidly attached to the connecting finger on the spider structure, whereas the lower segment of the lower plug portion is rigidly connected to the control rod. Also, the lower section of the upper plug portion and the middle segment of the lower plug portion have complementary threads defined thereon for rigidly threadably attaching the upper and lower plug portions to one another. Two embodiments of locking features can be used in conjunction with the upper and lower plug portions for locking them together so as to resist their unthreading from one another.

REFERENCES:
patent: 3359449 (1967-12-01), Trask
patent: 4314885 (1982-02-01), Edwards et al.
patent: 4381283 (1983-04-01), Walton
patent: 4452755 (1984-06-01), Hylton
patent: 4599213 (1986-07-01), Leclercq et al.
patent: 4664874 (1987-05-01), Shallenberger et al.
patent: 4820475 (1989-04-01), Mayers et al.
patent: 4820479 (1989-04-01), Hornak et al.

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