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Application of a Comprehensive Sensitivity Analysis Method on the Safety Assessment of TRU Waste Disposal in JAPAN

Published online by Cambridge University Press:  19 October 2011

Takao Ohi
Affiliation:, JAPAN ATOMIC ENERGY AGENCY, Geological Isolation Research and Development Directorate, 4-33 Muramatsu Tokai-mura, Naka-gun Ibaraki-ken, 319-1194, Japan
Hiroyasu Takase
Affiliation:, Quintessa K. K, Queen's Tower A 7-707, 2-3-1 Minatomirai Nishi-ku, Yokohama, Kanagawa-ken, 220-6007, Japan
Manabu Inagaki
Affiliation:, JAEA, 4-33 Muramatsu, Tokai-mura, Ibaraki-ken, 319-1194, Japan
Kiyoshi Oyamada
Affiliation:, JGC Corporation, 2-3-1 Minatomirai Nishi-ku, Yokohama, Kanagawa-ken, 220-6001, Japan
Tomoyuki Sone
Affiliation:, JAEA, 4-33 Muramatsu, Tokai-mura, Ibaraki-ken, 319-1194, Japan
Morihiro Mihara
Affiliation:, JAEA, 4-33 Muramatsu, Tokai-mura, Ibaraki-ken, 319-1194, Japan
Takeshi Ebashi
Affiliation:, JAEA, 4-33 Muramatsu, Tokai-mura, Ibaraki-ken, 319-1194, Japan
Kunihiko Nakajima
Affiliation:, NESI Inc., 4-33 Muramatsu, Tokai-mura, Ibaraki-ken, 319-1112, Japan
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A comprehensive sensitivity analysis method has been developed with the aim of providing quantitative information in an efficient manner. This methodology is composed of the following two components: (1) a statistical method with random sampling of independent parameters, which identifies important parameters and extracts threshold values of parameters and/or combinations yielding a 'successful condition' where maximum dose does not exceed a target value, (2) A nuclide migration model that as far as possible incorporates a comprehensive set of phenomena occurring within the repository. This approach was applied as part of a safety assessment of the geological disposal of TRU waste in Japan (TRU-2). It was shown that the concept of TRU waste disposal is robust from the point of view of safety.

Research Article
Copyright © Materials Research Society 2007

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