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Analytic Models for Assessing the Performance of Engineered Barriers in a Basalt Repository

Published online by Cambridge University Press:  25 February 2011

Joanna I. Scott  and
Charles M. Koplik
Joanna I. Scott
Affiliation:
The Analytic Sciences Corporation, One Jacob Way, Reading, Massachusetts
Charles M. Koplik
Affiliation:
The Analytic Sciences Corporation, One Jacob Way, Reading, Massachusetts
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Abstract

Analytic models have been developed and used to study the performance of engineered barriers in a basalt repository with waste packages vertically emplaced below the storage room floors. Models have been developed for the groundwater flow field and for waste transport through the waste package backfill and up to the top of the storage room. The lowest release rates at the top of the storage room occur for a room backfill with high hydraulic conductivity (greater than the surrounding rock), high porosity and good sorption. Such a room backfill is much more effective than waste package backfill at delaying releases from the engineered system, especially for short-lived nuclides. A repository design with horizontal emplacement of waste packages has also been studied and found to have higher release rates, owing to a larger cross-section to groundwater flow and the absence of an overlying storage room.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 26: Symposium D – Scientific Basis for Nuclear Waste Management VII , 1983 , 1077
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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