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Chemical Interactions in the Near-Field of a Repository for Spent Nuclear Fuel – A Modeling Study

Published online by Cambridge University Press:  10 February 2011

Heikki Kumpulainen ,
Jarmo Lehikoinen  and
Arto Muurinen
Heikki Kumpulainen
Affiliation:
VTT Chemical Technology, P.O. Box 1404, FIN-02044 VTT, Finland
Jarmo Lehikoinen
Affiliation:
VTT Chemical Technology, P.O. Box 1404, FIN-02044 VTT, Finland
Arto Muurinen
Affiliation:
VTT Chemical Technology, P.O. Box 1404, FIN-02044 VTT, Finland
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Abstract

The near-field chemistry of the repository for spent nuclear fuel arising from interactions between the groundwater, compacted bentonite clay, canister and the spent fuel was calculated using a three-successive-closed-systems approach. The calculations were performed for fresh granitic and saline groundwaters using the thermodynamic computer codes, HYDRAQL/CE and EQ3/6. The effects of water chemistry inside the canister as well as water radiolysis on fuel dissolution were taken into consideration. The groundwater and the three barriers of the near-field were accounted for by this approach, with particular emphasis given to the pH, Eh and actinide solubilities.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 123
Copyright
Copyright © Materials Research Society 2000

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References

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