G - Physics – 21 – F
Patent
G - Physics
21
F
359/87
G21F 9/30 (2006.01) G21F 5/00 (2006.01) G21F 5/005 (2006.01) G21F 9/36 (2006.01)
Patent
CA 1190332
ABSTRACT OF THE DISCLOSURE: A method of preparing spent nuclear fuel rods from a nuclear reactor for long-term storage in a copper container, which method comprises the steps of embedding the fuel rods in copper powder within the container, closing the container with a copper lid, and subjecting the closed container to hot isostatic compression at a pressure and a temperature sufficient to form the container, the powder and the lid into a coherent mass in which the spent fuel rods are embedded. The present invention makes use of the knowledge that a copper container is extremely well suited for long-term storage of spent nuclear fuel rods from a nuclear reactor due to its high resistance to corrosion by water. The present invention is based on the realization that the resistance of the enclosure can be improved by embedding the fuel rods in copper powder within the con- tainer and effecting a pore-free unitary body of all enclosing materials. This is preferably achieved at such a temperature that the gas present in the cladding tubes of the fuel will not generate a pressure sufficient to cause creep rupture in the tubes.
398902
Larker Hans
Tegman Ragnar
Abb Atom Ab
Robic Robic & Associes/associates
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