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Long-Term Radioactivity Release From Solidified High-Level Waste -Part I: An Approach To Evaluating Experimental Data

Published online by Cambridge University Press:  15 February 2011

Friedrich K. Altenhein ,
Werner Lutze  and
Rodney C. Ewing
Friedrich K. Altenhein
Affiliation:
Hahn-Meitner-Institut für Kernforschung Berlin, Glienicker Strasse 100, D 1000 Berlin 39, Germany
Werner Lutze
Affiliation:
Hahn-Meitner-Institut für Kernforschung Berlin, Glienicker Strasse 100, D 1000 Berlin 39, Germany
Rodney C. Ewing
Affiliation:
The University of New Mexico, Albuquerque, New Mexico 87131, USA
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Extract

Safety and risk analyses for the isolation of radioactive waste in a repository must begin with a source term to quantify the amount of radioactivity released from the waste form under a specific set of conditions. The interaction of the waste form with aqueous solutions is the most important mechanism to consider, as any material released may be dissolved and reach the biosphere. In this regard the behaviour of heat generating high-level waste is of particular importance, because reaction rates are higher at elevated temperatures. A long-term leach rate was derived from previous and continuing experimental work. The purpose of this paper is not to describe the “real case” release but rather to provide guidelines for the design of leaching experiments and determine the required precision for the data. This can be derived from the relative sensitivity of extrapolated leach rates for various parameters measured in laboratory experiments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 11: Symposium – Scientific Basis for Nuclear Waste Management V , 1981 , 45
Copyright
Copyright © Materials Research Society 1982

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References

REFERENCES

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