Corrosion of High Burn-up Structured UO2 Fuel in Presence of Dissolved H2
The influence of high burn-up structured material on UO2 corrosion has been studied in an autoclave experiment. The experiment was conducted on spent fuel fragments with an average burn-up of 67 GWd/tHM. They were corroded in a simplified groundwater containing 33 mM dissolved H2 for 502 days. All redox sensitive elements were reduced. The reduction continued until a steady-state concentration
was reached in the leachate for U at 1.5 1010 Mand for Pu at 7 1011 M. The instant release of Cs during the first 7 days was determined to 3.4% of the total inventory. However, the Cs release stopped after release of 3.5%. It was shown that the high burn-up structure did not enhance fuel corrosion.
FORS Patrick;
CARBOL Paul;
VAN WINCKEL Stefaan;
SPAHIU K.;
2009-12-03
ELSEVIER SCIENCE BV
JRC55999
0022-3115,
http://www.elsevier.com/locate/jnucmat,
https://publications.jrc.ec.europa.eu/repository/handle/JRC55999,
10.1016/j.jnucmat.2009.07.004,
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