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“Relative Rates Method” for Evaluating the Effect of Potential Geological Environmental Change due to Uplift/Erosion to Radionuclide Migration of High-level Radioactive Waste

Published online by Cambridge University Press:  04 July 2014

Takeshi Ebashi ,
Makoto Kawamura ,
Manabu Inagaki ,
Shigeru Koo ,
Masahiro Shibata ,
Toru Itazu ,
Kunihiko Nakajima ,
Kaname Miyahara  and
Michael J Apted
Takeshi Ebashi
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Makoto Kawamura
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Manabu Inagaki
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Shigeru Koo
Affiliation:
NESI Inc., 4-33, Muramatsu, Tokai-mura, Naka-gun, Ibaraki, 319-1112, Japan.
Masahiro Shibata
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Toru Itazu
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Kunihiko Nakajima
Affiliation:
NESI Inc., 4-33, Muramatsu, Tokai-mura, Naka-gun, Ibaraki, 319-1112, Japan.
Kaname Miyahara
Affiliation:
Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai-mura, Ibaraki, 319-1184, Japan.
Michael J Apted
Affiliation:
INTERA Inc., 3900, S. Wadsworth, Blvd., Suite 555, Denver, CO 80235, USA.
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Abstract

We have developed a “Relative Rates Method” to make bounding calculations regarding radionuclide migration due to uplift/erosion (“exhumation”) of a HLW repository. Results show that this method can apply to a wide range of different uplift rates and erosion rates. In addition, for the long time period, it was shown that the relative difference of uplift rate / erosion rate and potential hydraulic change arising from extreme uplift/erosion could affect radionuclide release and migration, thus uplift/erosion concerns should be fed back to site selection. Our method provides a credible and defensible basis for analysis and interpretation of possible uplift/erosion impacts for future volunteer sites.

Keywords

geologicwaste managementkinetics
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1665: Symposium NW – Scientific Basis for Nuclear Waste Management XXXVII , 2014 , pp. 39 - 45
Copyright
Copyright © Materials Research Society 2014 

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References

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