Cleaning radioactively contaminated material

Details Cleaning radioactively contaminated material Cleaning radioactively contaminated material

G - Physics

21

F

G21F 9/00 (2006.01) G21F 9/28 (2006.01) G21F 9/30 (2006.01)

Patent

CA 2243971

Radioactively contaminated material is cleaned by placing the material in a permeable container, such as a bag, and inserting the container into an apertured, rotatable vessel. The material is then subjected within the rotating vessel to a leaching cycle, using nitric acid, and a washing cycle, using fresh water. Preferably, at least one further washing cycle is employed. After discharging the washing liquid, the material is subjected to a spin- drying operation. The material undergoing cleaning is a filter medium which includes a glass component.

On nettoie une matière ayant subi une contamination radioactive en la plaçant dans un réceptacle perméable tel qu'un sac, et en insérant ce réceptacle dans une cuve rotative ajourée. La matière est ensuite soumise dans la cuve rotative à un cycle de lessivage avec de l'acide nitrique, et un cycle de lavage avec de l'eau neuve. De préférence, on effectue au moins un autre cycle de lavage. Après évacuation du liquide de lavage, la matière est soumis à une opération de centrifugation. La matière subissant le nettoyage est un milieu de filtration qui est constitué d'un composant de verre.

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