Canister for final repository of spent nuclear fuel

Details Canister for final repository of spent nuclear fuel Canister for final repository of spent nuclear fuel

G - Physics

21

F

G21F 9/36 (2006.01) G21F 5/005 (2006.01)

Patent

CA 2686821

The invention relates to a canister (1) for final repository of spent fuel elements from a nuclear reactor, comprising an insert (2) that contains said spent fuel elements, an inner copper casing (4a, 4b, 4c) that encloses the insert (2), and at least one outer casing (5a, 5b, 5c) that encloses the copper casing and that consists of a passive-film-forming metal or metal alloy, the passive film on the casing being constituted by an essentially oxidic film that is rich in one or more of the metals in the group of metals that consist of the metals zirconium, chromium and titanium.

L'invention concerne un réceptacle (1) final d'éléments combustibles épuisés, provenant d'un réacteur nucléaire, comportant un élément rapporté (2) qui contient les éléments combustibles épuisés, un boîtier intérieur en cuivre (4a, 4b, 4c) qui entoure l'élément rapporté (2) et au moins un boîtier extérieur (5a, 5b, 5c) qui entoure le boîtier de cuivre et qui est constitué d'un métal ou d'un alliage métallique formant un film passif, le film passif disposé sur le boîtier étant constitué par un film essentiellement oxydant qui est riche en un ou plusieurs des métaux du groupe qui est constitué du zirconium, du chrome et du titane.

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