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Journal Articles

Study on criticality in natural barrier for disposal of fuel debris from Fukushima Daiichi NPS

Shimada, Taro; Takubo, Kazuya*; Takeda, Seiji; Yamaguchi, Tetsuji

Progress in Nuclear Science and Technology (Internet), 5, p.183 - 187, 2018/11

After fuel debris is removed from the reactor containment vessel at Fukushima Daiichi NPS (1F) and collected in waste containers in the future, the waste containers will be disposed at a deep geological repository. The uranium inventory and uranium-235 ($$^{235}$$U) enrichment of the fuel debris are larger than those of high-level vitrified wastes which are produced from liquid waste during reprocessing of spent nuclear fuels. Therefore, there is a possibility not to be excluded that a criticality occurs in the geological media where the uranium precipitates at the far-field from the repository, after the uranium located in the repository is dissolved by groundwater. In this study, we calculated the quantity of uranium precipitated at the natural barrier, and studied dimension of uranium deposited in the natural barrier and carried out the criticality analysis.

JAEA Reports

Progress report on safety research on radioactive waste management for the period April 1995 to March 1996

Sekine, Keiichi; Muraoka, Susumu; Bamba, Tsunetaka

JAERI-Review 97-007, 61 Pages, 1997/03

JAERI-Review-97-007.pdf:2.18MB

no abstracts in English

JAEA Reports

Progress report on safety research on radioactive waste management for the period April 1993 to March 1995

Sekine, Keiichi; Muraoka, Susumu; Bamba, Tsunetaka

JAERI-Review 96-005, 97 Pages, 1996/03

JAERI-Review-96-005.pdf:2.88MB

no abstracts in English

Journal Articles

Quantitative performance allocation of multi-barrier system for high-level radioactive waste disposal

*; *; *; *; Sakamoto, Yoshiaki; *; *; ; Nagasaki, Shinya*; *; et al.

Nihon Genshiryoku Gakkai-Shi, 37(1), p.59 - 77, 1995/00

 Times Cited Count:12 Percentile:75.31(Nuclear Science & Technology)

no abstracts in English

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