Method of incineration of minor actinides in nuclear reactors

G - Physics – 21 – C

Patent

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G21C 3/326 (2006.01) G21C 5/02 (2006.01) G21D 9/00 (2006.01)

Patent

CA 2405955

A method of incineration of minor actinides in nuclear reactors is presented. The minor actinides to be incinerated are embedded in at least one finite region of a core of a thermal nuclear reactor. This finite region is isolated from the rest of the core by means of a thin layer of material that absorbs thermal neutrons but is transparent to fast neutrons. This isolating material is preferably fissile, so that the neutron flux in the core is not simply filtered of its thermal neutrons, but also amplified in its fast neutrons.

La présente invention concerne un procédé d'incinération d'actinides mineurs dans des réacteurs nucléaires. Les actinides mineurs à incinérer sont noyés dans au moins une partie restreinte du coeur d'un réacteur thermonucléaire. Cette partie restreinte est isolée du reste du coeur par l'intermédiaire d'une fine couche d'un matériau qui absorbe les neutrons thermiques, mais qui est transparent aux neutrons rapides. Ce matériau isolant est de préférence fissile de sorte que le flux de neutrons dans le coeur n'est pas seulement filtré pour en extraire les neutrons thermiques, mais est également amplifié vis-à-vis de ses neutrons rapides.

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