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Performance Analysis of a Repository for Low and Intermediate Level Reactor Waste

Published online by Cambridge University Press:  28 February 2011

Timo Vieno ,
Henrik Nordman ,
Seppo Vuori  and
Esko Peltonen
Timo Vieno
Affiliation:
Technical Research Centre of Finland, Nuclear Engineering Laboratory, P.O. Box 169, SF-00181 Helsinki, Finland
Henrik Nordman
Affiliation:
Technical Research Centre of Finland, Nuclear Engineering Laboratory, P.O. Box 169, SF-00181 Helsinki, Finland
Seppo Vuori
Affiliation:
Technical Research Centre of Finland, Nuclear Engineering Laboratory, P.O. Box 169, SF-00181 Helsinki, Finland
Esko Peltonen
Affiliation:
Industrial Power Company Ltd., Fredrikinkatu 51-53, SF-O0100 Helsinki, Finland
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Abstract

In Finland, utilities producing nuclear energy are responsible for the management of the radioactive waste, including final disposal. As regards low and intermediate level waste, the approach has been adopted to employ the power plant sites for locations of repositories. The repositories will be excavated at the depth of about 50 to 125 m in the bedrock of the two Finnish nuclear power plant sites, Loviisa and Olkiluoto.

The performance analysis presented in this paper has been carried out for the Preliminary Safety Analysis Report (PSAR) of the Olkiluoto reposi- tory. A flexible model has been developed to estimate the release of radio- nuclides from waste packages and their subsequent transport through the engi- neered barriers in the repository. Gradual degradation of the engineered barriers is accounted for by altering parameters at fixed time points. Safety margins of the disposal concept have been evaluated by including disturbed evolution scenarios in the analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 84: Symposium L – Scientific Basis for Nuclear Waste Management X , 1986 , 381
Copyright
Copyright © Materials Research Society 1987

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References

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