Nuclear reactor fuel elements

Details Nuclear reactor fuel elements Nuclear reactor fuel elements

1989-01-30

1990-11-06

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376434, G21C 332

Patent

active

049684809

ABSTRACT:
A nuclear reactor fuel element is helically wound with a strip which on one face at regular intervals along its length has dimples, and has a continuous rib on the opposite face. The strip contacts the associated fuel pin cladding via the dimples which effectively act as point contacts, and it contacts the neighboring fuel pins via the rib which also provides point contact. The regions between adjacent dimples are clear of the cladding and provide coolant flow paths thereby avoiding stagnant regions. The dimples may be arranged in two staggered sets one on each side of a central rib, and the strip then wound so that the dimples in each set each align axially with a respective dimple of the other set.

REFERENCES:
patent: 3930940 (1976-01-01), Cayol
patent: 3944468 (1976-03-01), Duret
patent: 4005521 (1977-02-01), Kaplan
patent: 4038138 (1977-07-01), Linning
patent: 4235673 (1980-11-01), Mordarski
patent: 4587092 (1986-05-01), Feutrel
patent: 4654193 (1987-03-01), Amano
Derwent Abstract of FR 2059139.

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