METHOD OF EXTRACTING NUCLEAR FISSION PRODUCT

摘要

Process for the extraction of fission products contained in irradiated nuclear fuel elements which have been subject to a temperature of at least 1200 DEG C. during their irradiation prior to dissolving the fuel by the wet process. After mechanically treating the elements in order to decan and/or cut them they are brought into contact with water in order to pass the fission products into aqueous solution. The treated elements are then separated from the thus obtained aqueous solution. At least one of the fission products is then recovered from the aqueous solution. The fission products are iodine, cesium, rubidium and tritium.