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At the La Hague plant, solutions of fission products and minor actinides are calcined at around 400 degrees C, then vitrified by mixing them with glass frit in an oven at a temperature of around 1100 degrees C. The molten glass is poured into a cylindrical container (right) made from special steel. A lid is welded on to the container body. The cutaway model on the left shows the interior of a standard vitrified waste container. The mass of the glass is approximately 400 kg, and the mass of the radioactive products within it, around 11 kg.
COGEMA/ANDRA