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Near-Field Geochemistry of Vitrified HLW in a Sedimentary Host Rock

Published online by Cambridge University Press:  26 February 2011

Ian G. Mckinley  and
Mike Bradbury
Ian G. Mckinley
Affiliation:
NAGRA, CH-5401 Baden, Switzerland
Mike Bradbury
Affiliation:
Paul Scherrer Institut, CH-5303 Würenlingen, Switzerland
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Abstract

The Project Gewähr 1985 (PG'85) safety analysis considered the practicality of HLW disposal in the crystalline bedrock of Northern Switzerland. More recently, an alternative disposal option in the argillaceous sediments overlying the crystalline basement has been examined. This paper examines some aspects of the performance of the near-field engineered barriers in an argillaceous environment, with specific comparison to the PG'85 crystalline case. Two phenomena are considered in particular detail: oxidation of the host rock during the operational phase and the related failure mode of the steel tunnel liner.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 645
Copyright
Copyright © Materials Research Society 1989

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References

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