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Materials Interactions Relating to Long-Term Geologic Disposal of Nuclear Waste Glass

Published online by Cambridge University Press:  28 February 2011

Ned E. Bibler  and
Carol M. Jantzen
Ned E. Bibler
Affiliation:
E. I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, South Carolina 29808
Carol M. Jantzen
Affiliation:
E. I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, South Carolina 29808
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Abstract

In the geologic disposal of nuclear waste glass, the glass will eventually interact with groundwater in the repository system. Interactions can also occur between the glass and other waste package materials that are present. These include the steel canister that holds the glass, the metal overpack over the canister, backfill materials that may be used, and the repository host rock. This review paper systematizes the additional interactions that materials in the waste package will impose on the borosilicate glass waste form-groundwater interactions. The repository geologies reviewed are tuff, salt, basalt, and granite. The interactions emphasized are those appropriate to conditions expected after repository closure, e.g. oxic vs. anoxic conditions. Whenever possible, the effect of radiation from the waste form on the interactions is examined. The interactions are evaluated based on their effect on the release and speciation of various elements including radionuclides from the glass. It is noted when further tests of repository interactions are needed before long-term predictions can be made.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 84: Symposium L – Scientific Basis for Nuclear Waste Management X , 1986 , 47
Copyright
Copyright © Materials Research Society 1987

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