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Collaborative Laboratories for Advanced Decommissioning Science; University of Tsukuba*
JAEA-Review 2021-023, 49 Pages, 2021/12
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2020. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2018, this report summarizes the research results of the "Upgrading of recovery method for radioactive microparticles by heavy liquid separation aiming to volume reduction of contaminated soil" conducted from FY2018 to FY2020. Since the final year of this proposal was FY2020, the results for three fiscal years were summarized. The present study aims to develop a novel method to reduce the volume of contaminated soil caused by an accident at the Fukushima Daiichi Nuclear Power Station. The heavy liquid separation method, which was optimized in the previous year, was applied to nine soils collected in Fukushima Prefecture.
Collaborative Laboratories for Advanced Decommissioning Science; University of Tsukuba*
JAEA-Review 2020-037, 53 Pages, 2020/12
JAEA/CLADS had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project in FY2019. Among the adopted proposals in FY2018, this report summarizes the research results of the "Upgrading of Recovery Method for Radioactive Microparticles by Heavy Liquid Separation Aiming to Volume Reduction of Contaminated Soil" conducted in FY2019.
Collaborative Laboratories for Advanced Decommissioning Science; University of Tsukuba*
JAEA-Review 2019-023, 33 Pages, 2020/01
CLADS, JAEA, had been conducting the Center of World Intelligence Project for Nuclear Science/Technology and Human Resource Development (hereafter referred to "the Project") in FY2018. The Project aims to contribute to solving problems in nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2018, this report summarizes the research results of the 'Upgrading of Recovery Method for Radioactive Microparticles by Heavy Liquid Separation Aiming to Volume Reduction of Contaminated Soil'. After the accident of the Fukushima Daiichi Nuclear Power Station, radioactive cesium has been heterogeneously distributed in surface soil due to the existence of radioactive microparticles and clay minerals. Therefore, the selective removal of these microparticles will lead to the volume reduction of contaminated soil. The present study examines methods for selectively removing radioactive microparticles from soil. Also, in order to reduce the volume of contaminated soil, we search a possibility to practically apply the separation method that uses the difference in specific gravity of particles (heavy liquid separation method).
Ono, Masao; Huang, X.*; Kinoshita, Takahiro*; Ueno, Hideto*; Osakabe, Toyotaka; Mashimo, Tsutomu
Defect and Diffusion Forum, 237-240(2), p.1101 - 1104, 2005/00
Ultra-strong gravitational field can induce sedimentation of even atoms in condensed matter. We had realized sedimentation of substitutional solute atoms in some miscible alloys. How about in the other alloys? So, In this study, the ultra-centrifuge experiments were performed on an intermetallic compound of Bi-Pb system (BiPb) by changing time duration of experiment time (experimental conditions; maximum centrifugal force: 1.010g level, temperature: 130-150 C, duration: 30-150h, state: solid). Composition changes were observed in the centrifuged samples. And, it was found that the Bi phase appeared from starting state of BiPb around the weak gravitational field region of the sample. These results showed that sedimentation of substitutional solute atoms occurred, and induced the structure change in intermetallic compounds.
Seki, Kosuke*; Tsuji, Yoshiyuki*; Kondo, Masaya; Kukita, Yutaka*
Nihon Kikai Gakkai 2001-Nendo Nenji Taikai Koen Rombunshu, p.9 - 10, 2001/00
no abstracts in English
Yonomoto, Taisuke; Anoda, Yoshinari
IAEA-TECDOC-1149, p.233 - 246, 2000/05
no abstracts in English
Abe, Yutaka*; Kawaji, Masahiro*; Watanabe, Tadashi
Proceedings of 2nd Japanese-European Two-Phase Flow Group Meeting (CD-ROM), 6 Pages, 2000/00
no abstracts in English
Onuki, Akira
Dai-1-Kai Oganaizudo Konsoryu Foramu Koen Rombunshu, p.73 - 82, 1997/00
no abstracts in English
Kobayashi, Yasuhiko; ; *; Watanabe, Hiroshi
Biol. Sci. Space, 10(2), p.97 - 101, 1996/00
no abstracts in English
Yonomoto, Taisuke; *; *; Anoda, Yoshinari; Kukita, Yutaka; ; Ito, Hideo; Osaki, Hideki; ; Nishikizawa, Tomotoshi; et al.
JAERI-M 94-069, 145 Pages, 1994/03
no abstracts in English
Shimizu, Katsusuke*; *; Koizumi, Koichi; *; Nishio, Satoshi; Sasaki, Takashi*; Tada, Eisuke
JAERI-M 92-135, 139 Pages, 1992/09
no abstracts in English
Anoda, Yoshinari; Watanabe, Tadashi; Kukita, Yutaka
Proc. of the Int. Conf. on Multiphase Flows 91-TSUKUBA,Vol. 1, p.397 - 400, 1991/00
no abstracts in English
; ; Abe, Yutaka; ; Sudo, Yukio; Osakabe, Masahiro;
JAERI-M 84-223, 194 Pages, 1984/12
no abstracts in English
Nakanishi, Hiroshi*; Arakawa, Kazuo; Hayakawa, Naohiro; Machi, Sueo; Yagi, Tetsuya*
Nihon Genshiryoku Gakkai-Shi, 25(3), p.217 - 224, 1983/00
Times Cited Count:1 Percentile:22.48(Nuclear Science & Technology)no abstracts in English
; ;
JAERI-M 6004, 27 Pages, 1975/02
no abstracts in English
; ; ;
Journal of Nuclear Science and Technology, 11(7), p.300 - 307, 1974/07
Times Cited Count:5no abstracts in English
Honda, Ryo*; Okubo, Makoto*; Tanaka, Toshiyuki*; Yanagizawa, Koichi
no journal, ,