Nuclear fuel element

Details Nuclear fuel element Nuclear fuel element

1977-09-30

1980-04-29

Brown, David H.

176 91R, G21C 320

Patent

active

042004926

ABSTRACT:
A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has an improved composite cladding comprised of a moderate purity metal barrier of zirconium metallurgically bonded on the inside surface of a zirconium alloy tube. The metal barrier forms a shield between the alloy tube and a core of nuclear fuel material enclosed in the composite cladding. There is a gap between the cladding and the core. The metal barrier forms about 1 to about 30 percent of the thickness of the composite cladding and has low neutron absorption characteristics. The metal barrier serves as a preferential reaction site for gaseous impurities and fission products and protects the alloy tube from contact and reaction with such impurities and fission products. Methods of manufacturing the composite cladding are also disclosed.

REFERENCES:
patent: 3053743 (1962-09-01), Cain, Jr.
patent: 3145150 (1964-08-01), Gylfe
patent: 3262860 (1966-07-01), Zebroski
patent: 3365371 (1968-01-01), Lass et al.
patent: 3442761 (1969-05-01), Feraday
"Zirconium" 2nd Ed., Butterworth's Scientific Publishing by G. L. Miller, pp. 474-475.
"Elements of Physical Metallurgy" 2nd Ed., Addison Wesley Publishing Co., A. Guy, pp. 194-195.
Cladding Materials for Nuclear Reactor Fuels, (1/72), Kangilaski et al.

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