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Spent UO2-fuel Dissolution. Tentative Modelling of Experimental Apparent Solubilities

Published online by Cambridge University Press:  26 February 2011

J Bruno,
R S Forsyth and
L O Werme
J Bruno
Affiliation:
Royal Institute of Technology, Department of inorganic chemistry, Stockholm, Sweden
R S Forsyth
Affiliation:
Studsvik Energiteknik AB, Nyköping, Sweden
L O Werme
Affiliation:
The Swedish Nuclear Fuel and Waste Management Co. (SKB), Stockholm, Sweden
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Abstract

Experimentally measured concentrations in spent UO2-fuel leachates are reported for uranium and plutonium for contact times ranging from 14 days to 2 years at different pH. The experimental results for uranium clearly indicated saturation. This interpretation was supported by comparison with theoretical solubilities, calculated using a modified SOLGASWATER program. The calculated solubilities were found to agree well with the experimentally determined concentrations.

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