Nuclear fuel pellet with oppositely bottomed holes

Details Nuclear fuel pellet with oppositely bottomed holes Nuclear fuel pellet with oppositely bottomed holes

1977-09-02

1979-11-20

Nelson, Peter A.

176 73, 176 76, G21C 304

Patent

active

041750020

ABSTRACT:
A nuclear fuel pellet is made of a sintered, ceramic nuclear fuel mass and has a cylindrical configuration with a pair of opposite bottomed holes centrally provided one at each end. The bottomed holes are convergent toward their bottoms and each have a U-shaped cross-section. A ratio of the diameter of the opening to the depth of the bottom hole is smaller than unity. The nuclear fuel element is free from defects such as cracks, easy to manufacture and capable of reducing a PCMI (a pellet-clad casing mechanical interaction).

REFERENCES:
patent: 3365371 (1968-01-01), Lass et al.
patent: 3415911 (1968-12-01), Lloyd
patent: 3804710 (1974-04-01), Bresnick
Steinar AAS, Mechanical Interaction Between Fuel & Cladding, Nuc. Eng. & Design, 21, 1972, pp. 237-253.

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