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Comparison of the Dissolution Behaviour of Various UO2 Samples in Saline Solution at 100°C Under Reducing Conditions

Published online by Cambridge University Press:  25 February 2011

S. Stroes-Gascoyne ,
J.C. Tait ,
R.J. Porth ,
J.L. McConnell  and
A.M. Duclos
S. Stroes-Gascoyne
Affiliation:
AECL Research, whiteshell Laboratories, Pinava, Manitoba, Canada ROE 1L0
J.C. Tait
Affiliation:
AECL Research, whiteshell Laboratories, Pinava, Manitoba, Canada ROE 1L0
R.J. Porth
Affiliation:
AECL Research, whiteshell Laboratories, Pinava, Manitoba, Canada ROE 1L0
J.L. McConnell
Affiliation:
AECL Research, whiteshell Laboratories, Pinava, Manitoba, Canada ROE 1L0
A.M. Duclos
Affiliation:
AECL Research, whiteshell Laboratories, Pinava, Manitoba, Canada ROE 1L0
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Abstract

The separate effects of alpha- and gamma-radiolysis on UO2 dissolution can be studied with unirradiated UO2, whereas studies vith used nuclear fuel necessarily always include both alpha- and gamma-radiolysis effects. This paper attempts to separate these effects by comparing the leaching behaviour in saline solution of a number of UO2 samples (each vith a particular radiation characteristic or chemical property inherent to used fuel) vith the leaching behaviour of used fuel. Data from leaching experiments vith lov- and high-burnup CANDU (CANada Deuterium Uranium) fuels are also compared. The results indicate that the presence of an alpha field at 100°C under reducing conditions does not increase UO2 dissolution but suggest that the combined effects of the beta and gamma fields in used CANDU fuel may enhance UO2 dissolution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 425
Copyright
Copyright © Materials Research Society 1994

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References

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