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Aoya, Juri; Miyata, Katsuhiko*; Terakado, Akihito*; Otsuzumi, Yoji*; Kurosawa, Daiki*; Sunaba, Takanobu*; Oyama, Yuto*; Inada, Satoshi
Nihon Hozen Gakkai Dai-17-Kai Gakujutsu Koenkai Yoshishu, p.507 - 512, 2021/07
The high level radioactive liquid waste is analyzed for the vitrification process control and the vitrified waste quality in the hot cell of Tokai Vitrification Facility, Tokai Reprocessing Plant. There are 8 Master-slave manipulators, 7 lighting equipment, an electronic balance, and an inductively coupled plasma-optical emission spectrometer used for remote operation, securing visibility, total oxide analysis, and elemental analysis in the analytical hot cell. These equipment and analytical apparatus must be secured with the integrity all the time because the vitrification process cannot be proceeded without analysis of the high level radioactive liquid waste. We constructed the self-remote-maintenance technologies of these equipment and analytical apparatus which reduce the risks of radioactive contamination, radiation exposure, and injury of an operator and also were optimized with respect to a labor, time, and cost, based on the operation of approximately 20 years.
Nakayama, Masashi; Saiga, Atsushi; Kimura, Shun; Mochizuki, Akihito; Aoyagi, Kazuhei; Ono, Hirokazu; Miyakawa, Kazuya; Takeda, Masaki; Hayano, Akira; Matsuoka, Toshiyuki; et al.
JAEA-Research 2019-013, 276 Pages, 2020/03
The Horonobe Underground Research Laboratory (URL) Project is being pursued by the Japan Atomic Energy Agency (JAEA) to enhance the reliability of relevant disposal technologies for geological disposal of High-level Radioactive Waste through investigations of the deep geological environment within the host sedimentary rock at Horonobe Town in Hokkaido, north Japan. The investigations will be conducted in three phases, namely "Phase 1: Surface based investigations", "Phase 2: Construction phase" (investigations during construction of the underground facilities) and "Phase 3: Operation phase" (research in the underground facilities). According to the research plan described in the 3rd Mid- and Long- term Plan of JAEA, "Near-field performance study", "Demonstration of repository design option", and "Verification of crustal-movement buffering capacity of sedimentary rocks" are important issues of the Horonobe URL Project, and schedule of future research and backfill plans of the project will be decided by the end of 2019 Fiscal Year. The present report summarizes the research and development activities of these 3 important issues carried out during 3rd Medium to Long-term Research Phase.
Shibata, Goro*; Yoshimatsu, Kohei*; Sakai, Enju*; Singh, V. R.*; Verma, V.*; Ishigami, Keisuke*; Harano, Takayuki*; Kadono, Toshiharu*; Takeda, Yukiharu; Okane, Tetsuo; et al.
Physical Review B, 89(23), p.235123_1 - 235123_5, 2014/06
Times Cited Count:19 Percentile:66.76(Materials Science, Multidisciplinary)Kubota, Masato; Yamada, Hiroyuki*; Nakao, Hironori*; Okamoto, Jun*; Yamasaki, Yuichi*; Sawa, Akihito*; Murakami, Yoichi*
Japanese Journal of Applied Physics, 53(5S1), p.05FH07_1 - 05FH07_5, 2014/05
Times Cited Count:2 Percentile:8.89(Physics, Applied)Kubota, Masato; Yamada, Hiroyuki*; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Yamada, Hiroyuki*; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Takeda, Masayasu; Yamada, Hiroyuki*; Sawa, Akihito*; Okamoto, Jun*; Nakao, Hironori*; Murakami, Yoichi*
no journal, ,
no abstracts in English
Kubota, Masato; Takeda, Masayasu; Okamoto, Jun*; Nakao, Hironori*; Murakami, Yoichi*; Yamada, Hiroyuki*; Sawa, Akihito*
no journal, ,
Kubota, Masato; Sudayama, Takaaki*; Yamasaki, Yuichi*; Okamoto, Jun*; Nakao, Hironori*; Murakami, Yoichi*; Yamada, Hiroyuki*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Takeda, Masayasu; Okamoto, Jun*; Yamasaki, Yuichi*; Nakao, Hironori*; Murakami, Yoichi*; Sawa, Akihito*
no journal, ,
no abstracts in English
Kubota, Masato; Takeda, Masayasu; Yamada, Hiroyuki*; Sawa, Akihito*; Okamoto, Jun*; Nakao, Hironori*; Murakami, Yoichi*
no journal, ,
no abstracts in English
Kubota, Masato; Yamada, Hiroyuki*; Sawa, Akihito*; Nakao, Hironori*; Murakami, Yoichi*
no journal, ,
no abstracts in English
Kubota, Masato; Yamada, Hiroyuki*; Sawa, Akihito*; Nakao, Hironori*; Murakami, Yoichi*
no journal, ,
no abstracts in English