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Fujita, Tomoo; Taniguchi, Naoki; Matsui, Hiroya; Tanai, Kenji; Nishimura, Mayuka; Kobayashi, Yasushi; Hiramoto, Masayuki; Maekawa, Keisuke; Sawada, Atsushi; Makino, Hitoshi; et al.
JAEA-Research 2007-045, 140 Pages, 2007/03
JAEA-Research-2007-045-1.pdf:38.33MBJAEA-Research-2007-045-2.pdf:44.62MB
This report summarizes the progress of research and development on geological disposal during the surface-based investigation phase (2001-2005) in the Horonobe Underground Research Laboratory project (HOR), of which aims are to apply the design methods of geological disposal and mass transport analysis to actual geological environments and derive future subjects based on the results. The design methods of geological disposal were reviewed based on the recent knowledge and the advertences were identified. Then the parameters for virtual design of engineered barrier system, backfill deposition hole and tunnel were set up based on actual geological conditions obtained from the surface-based investigations in HOR as an example of actual geological environment. The conceptual structure from site investigation and evaluation to mass transport analysis was represented as a work flow at first. Then following this work flow a series of procedures for mass transport analysis were carried out based on actual geological conditions obtained from the surface-based investigations in HOR to illustrate the functioning of the work flow and the applicability of this methodology. Consequently, knowledge that will help follow-up or future execution and planning activities was obtained.
Maekawa, Keisuke; Sawada, Atsushi; Hara, Akio; Takebe, Atsuji; Makino, Hitoshi; Wakasugi, Keiichiro; Kato, Tomoko; Ebashi, Takeshi; Shibata, Katsushi*
Hoshasei Haikibutsu Anzen Kenkyu Nenji Keikaku (Heisei-13-Nendo
Heisei-17-Nendo) Kenkyu Seika Hokokushu, p.117 - 129, 2006/03
no abstracts in English
Makino, Hitoshi; Sawada, Atsushi; Maekawa, Keisuke; Shibata, Masahiro; Sasamoto, Hiroshi; Yoshikawa, Hideki; Wakasugi, Keiichiro; Koo, Shigeru*; Hama, Katsuhiro; Kurikami, Hiroshi; et al.
JNC TN1400 2005-021, 148 Pages, 2005/09
JNC-TN1400-2005-021.pdf:32.85MB
None
Shibata, Katsushi; Makino, Hitoshi; Wakasugi, Keiichiro; Uchida, Masahiro
Saikuru Kiko Giho, (21), p.79 - 88, 2003/12
R&D of geological disposal of high-level radioactive waste consists of three fields (site investigation, repository design and safety assessment). It is necessary to deal with an increase in quantity of , and growing diversity and complexity of technical information caused by progress of R&D at each field and accelerated iteration within these three fields. To deal with this problem, it is necessary to prepare the computational environment that can catalogue and share the technical information efficiently and effectively. This report introduces concept and approach for developing a "JNC Geological Disposal Technical Information Integration System (JGIS)"
Uchida, Masahiro; Makino, Hitoshi; Wakasugi, Keiichiro; Shibata, Katsushi
OECD/NEA Amigo Project Dai-1-Kai Wakushoppu, 0 Pages, 2003/00
None
Takahashi, Kuniaki; Meguro, Yoshihiro; Kawato, Yoshimi; Shibata, Katsushi*
no journal, ,
Low level liquid waste discharged from Tokai Reprocessing Plant includes high concentration of sodium nitrate. In the case that the solidified waste are disposed under the ground, leached nitrate migrates into the environment and impacts on surround. To avoid this impact, we planned to apply the biological treatment system to reduce nitrate from this waste liquid. To solve the assignments that biological treatment technology has, we tested and obtained the results as shown below; (1) The amount of sludge ash could be cut down a tenth as much as usual. The disposal cost reduction of waste is just in sight. (2) Treatment performance could be improved up to 7 kg-N/m
/d from 4 kg-N/m/d. It could be expected the more compact system by improvement of the membrane set into the biological treatment tanks.
Takahashi, Kuniaki; Meguro, Yoshihiro; Kawato, Yoshimi; Ogawa, Naoki*; Kuroda, Kazuhiko*; Shibata, Katsushi*
no journal, ,
An electrolytic reduction, chemical reduction, and biological reduction have been picked up as a method of nitrate liquid waste treatment system exhausted from the reprocessing. As a result of comparing them, it was shown that the biological treatment was the most excellent method in safety and the economy.
