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The Assessment of the Long-Term Evolution of the Spent Nuclear Fuel Matrix by Kinetic, Thermodynamic and Spectroscopic Studies of Uranium Minerals.

Published online by Cambridge University Press:  15 February 2011

Jordi Bruno ,
I. Casas ,
E Cera ,
R. C. Ewing ,
R. J. Finch  and
L. O. Werme
Jordi Bruno
Affiliation:
Intera (Spain), Pare Tecnològic del Vallés E-08290 Cerdanyola, Spain
I. Casas
Affiliation:
Intera (Spain), Pare Tecnològic del Vallés E-08290 Cerdanyola, Spain
E Cera
Affiliation:
Intera (Spain), Pare Tecnològic del Vallés E-08290 Cerdanyola, Spain
R. C. Ewing
Affiliation:
Dept. of Earth and Planetary Sciences, University of New Mexico, USA
R. J. Finch
Affiliation:
Dept. of Earth and Planetary Sciences, University of New Mexico, USA
L. O. Werme
Affiliation:
SKB, Box 5864, Stockholm, Sweden.
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Abstract

The long term behaviour of spent nuclear fuel is discussed in the light of recent thermodynamic and kinetic data on mineralogical analogues related to the key phases in the oxidative alteration of uraninite. The implications for the safety assessment of a repository of the established oxidative alteration sequence of the spent fuel matrix are illustrated with Pagoda calculations. The application to the kinetic and thermodynamic data to source term calculations indicates that the appearance and duration of the U(VI) oxyhydroxide transient is critical for the stability of the fuel matrix.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 633
Copyright
Copyright © Materials Research Society 1995

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References

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