Underground water contamination in a spent fuel deposit
When water leaches into an underground fuel deposit through small defects in the cladding, two consequences can be envisaged: transfer of fission products and actinides from the fuel to the water, and progressive fuel oxidation. The study undertaken focuses on fuels relevant to European technology and considers two types of fuels, UO(2) irradiated at high burn-up and MOX fuels of LWR. Leaching tests were carried out in soxhlets or autoclaves on the fuels used and the microstructures were examined by means of optical and electron scanning microscopy of the leached fuels, and on the leachate analysis by ICP-MS. The preliminary results show a strong dependence of the oxidation state of UO(2) in the U transfer kinetics.
Bibliographic Reference: Paper presented: European Nuclear Conference and Exhibition, Lyon (FR), October 2-6, 1994
Availability: Available from (1) as Paper EN 38646 ORA
Record Number: 199411326 / Last updated on: 1994-12-06
Original language: en
Available languages: en