Fabrication method for mixed oxide fuel

Details Fabrication method for mixed oxide fuel Fabrication method for mixed oxide fuel

G - Physics

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G21C 3/30 (2006.01) C04B 38/00 (2006.01) G21C 3/00 (2006.01) G21C 3/62 (2006.01) G21C 21/02 (2006.01)

Patent

CA 1062451

TITLE FABRICATION METHOD FOR MIXED OXIDE FUEL Inventor Melville A. Feraday ABSTRACT OF DISCLOSURE A mixed oxide fuel fabrication method using a starting material of an oxide of a first fuel in the form of spherical particles of two size fractions, fine and coarse, the process comprising sintering the fine fraction to full density sintering the coarse fraction to a predeter- mined density such that the porosity will allow enrichment, impregnating the coarse fraction with a salt of a second fuel material and treating this fraction to convert the impregnating material to an oxide and then loading both fractions into a fuel element sheath and compacting. In the preferred process three size fractions are used i.e. fine, medium, and coarse with only the coarse-fraction being subject to the impregnation step.

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