Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Résumé

Active Borssele zircaloy shells have been compacted by eutectic fusion with copper in the Vulcan chain. The decontamination of the molten metal by fluorine slag with a low melting point has been studied. The releasing of tritium has also been measured. Two batches of Wuergassen zircaloy shells have been coated with glass by heating these two compounds under argon scanning. The blocks obtained have a solidly uniform shape and are very compact. The lixiviation rates of the metal ingots are relatively high at atmospheric temperature: the presence of copper seems to be the cause of this phenomenon (galvanic corrosion). However the alpha activity released by the ingots remains clearly lower than that from untreated sheathed waste products. The confinement capacity of the coated materials is very poor during the first days of lixiviation, but seems to be linked to their method of preparation.

Informations supplémentaires

Auteurs: MAZOYER R, CEA, PARIS (FRANCE);VERNAZ E CEA, PARIS (FRANCE), CEA, PARIS (FRANCE)
Références bibliographiques: EUR 10702 FR (1986) FS, 58 P., BFR 250, EUROFFICE, LUXEMBOURG, POB 1003
Disponibilité: Can be ordered online