Individual source positioning mechanism for a nuclear reactor fu

Details Individual source positioning mechanism for a nuclear reactor fu Individual source positioning mechanism for a nuclear reactor fu

1984-08-20

1987-07-07

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Nuclear transmutation

376191, 376214, 376364, 376446, G21C 734

Patent

active

046786180

ABSTRACT:
A secondary source positioning mechanism for a fuel assembly in a nuclear reactor locates an individual one of the secondary sources in a respective guide thimble of the fuel assembly aligned with an opening defined through the upper core plate which overlies the fuel assembly. The positioning mechanism has a tapered locating boss which registers with a chamfer on the lower side of the core plate about one of its openings and a resilient holddown device which resiliently couples the upper end of a rod containing the secondary source to the locating boss in a manner which restrains the upper end of the rod in the lateral direction and positions the secondary source rod in the axial direction.

REFERENCES:
patent: 2872399 (1959-02-01), Newson
patent: 3349004 (1967-10-01), Lass et al.
patent: 3741868 (1973-06-01), Qurnelle et al.
patent: 3770583 (1973-11-01), Klumb et al.
patent: 3801734 (1974-04-01), West
patent: 4208247 (1980-06-01), Impink, Jr.
patent: 4208248 (1980-06-01), Jobsen
patent: 4278501 (1981-07-01), Steinke

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