Nuclear fuel element

Details Nuclear fuel element Nuclear fuel element

1974-02-11

1976-07-13

Bentley, Stephen C.

176 82, 176 91R, G21c 320

Patent

active

039691861

ABSTRACT:
A nuclear fuel element for use in the core of a nuclear reactor is disclosed. A heat conducting, fission product retaining metal liner of a refractory metal is incorporated in the fuel element between the cladding and the nuclear fuel to inhibit mechanical interaction between the nuclear fuel and the cladding, to isolate fission products and nuclear fuel impurities from contacting the cladding and to improve the axial thermal peaking gradient along the length of the fuel rod. The metal liner can be in the form of a tube or hollow cylindrical column, a foil of single or multiple layers in the shape of a hollow cylindrical column, or a coating on the internal surface of the cladding. Preferred refractory metal materials are molybdenum, tungsten, rhenium, niobium and alloys of the foregoing metals.

REFERENCES:
patent: 3198711 (1965-08-01), McPartland et al.
patent: 3211930 (1965-10-01), Clement et al.
patent: 3262860 (1966-07-01), Zebroski
patent: 3291700 (1966-12-01), Brossa et al.
patent: 3409504 (1968-11-01), Bailly et al.
patent: 3501337 (1970-03-01), Webb et al.

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