High performance fuel element with end seal

Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements

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Details

376433, G21C 302, G21C 502

Patent

active

047042486

ABSTRACT:
A nuclear fuel element comprising an elongate block of refractory material having a generally regular polygonal cross section. The block includes parallel, spaced, first and second end surfaces. The first end surface has a peripheral sealing flange formed thereon while the second end surface has a peripheral sealing recess sized to receive the flange. A plurality of longitudinal first coolant passages are positioned inwardly of the flange and recess. Elongate fuel holes are separate from the coolant passages and disposed inwardly of the flange and the recess. The block is further provided with a plurality of peripheral second coolant passages in general alignment with the flange and the recess for flowing coolant. The block also includes two bypasses for each second passage. One bypass intersects the second passage adjacent to but spaced from the first end surface and intersects a first passage, while the other bypass intersects the second passage adjacent to but spaced from the second end surface and intersects a first passage so that coolant flowing through the second passages enters and exits the block through the associated first passages.

REFERENCES:
patent: 3318779 (1967-05-01), Turner et al.
patent: 3413196 (1968-11-01), Fortescue et al.
patent: 3676297 (1972-07-01), Rennie et al.
patent: 3781190 (1973-12-01), Rapier
patent: 4060454 (1977-11-01), Miertschin et al.
patent: 4076775 (1978-02-01), Hackstein et al.
patent: 4092498 (1978-05-01), Lewis
patent: 4547334 (1985-10-01), Brogli et al.

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