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-contamination visualization (Contract research); FY2022 Nuclear Energy Science & Technology and Human Resource Development ProjectCollaborative Laboratories for Advanced Decommissioning Science; Hokkaido University*
JAEA-Review 2024-006, 54 Pages, 2024/06
JAEA-Review-2024-006.pdf:2.21MB
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 FY2022. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station (1F), 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 FY2022, this report summarizes the research results of the "Development of elemental technologies of hand-foot-cloth monitors for -contamination visualization" conducted in FY2022. The present study aims to develop hand-foot-monitors for -contamination visualization and cloth monitors for /
-contamination visualization consisting of a portable phoswich detector for measuring /-contamination distribution and energy to ensure the safety and security of workers involved in the decommissioning project of the 1F. The possibility of practical application of new scintillator materials and devices was examined with the goal of developing such new instruments.
GeP
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by quasi-elastic neutron scattering measurementsHori, Satoshi*; Kanno, Ryoji*; Kwon, O.*; Kato, Yuki*; Yamada, Takeshi*; Matsuura, Masato*; Yonemura, Masao*; Kamiyama, Takashi*; Shibata, Kaoru; Kawakita, Yukinobu
Journal of Physical Chemistry C, 126(22), p.9518 - 9527, 2022/06
Times Cited Count：10 Percentile：61.72(Chemistry, Physical)Mochimaru, Takanori*; Koizumi, Mitsuo; Takahashi, Tone; Hironaka, Kota; Kimura, Yoshiki; Sato, Yuki; Terasaka, Yuta; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*
Dai-42-Kai Nihon Kaku Busshitsu Kanri Gakkai Nenji Taikai Kaigi Rombunshu (Internet), 4 Pages, 2021/11
no abstracts in English
Tamada, Masao; Kasai, Noboru; Seko, Noriaki; Hasegawa, Shin; Kawabata, Yukiya*; Onuma, Kenji*; Takeda, Hayato*; Katakai, Akio; Sugo, Takanobu
JAERI-Tech 2001-065, 39 Pages, 2001/11
JAERI-Tech-2001-065.pdf:5.24MB
Positioning and monitoring system for marine component in recovery equipment of significant metals from seawater by using adsorbent was designed and assembled to avoid unexpected accidents. This system which was set on float part of the marine component obtains the position data by means of GPS satellites and send them to Takasaki and Mutsu establishments through satellite communication. As characteristic test for 20 days in the real sea, 256 data were obtained every 2 hours. The wrong data was eight and the positioning accuracy was 200.7m. To improve these characteristics, two new functions were added to the present firmware. These are to raise positioning resolutions in longitude and latitude from 0.001 to 0.00001 degree and to average remaining three data of positioning after maximum and minimum data were removed from continuous five times positioning. The improved system shows no wrong datum, average positioning of 6.74m. This performance is enough to prevent marine equipment from its drifting accident.
-ray survey systemSakamoto, Ryuichi; Tsutsumi, Masahiro
Nihon Genshiryoku Gakkai-Shi, 41(3), p.258 - 265, 1999/00
Times Cited Count：2 Percentile：20.96(Nuclear Science & Technology)no abstracts in English
Ogawa, Keizo*; Yokoi, Koichi*; Konishi, Naotoshi*
PNC TJ7718 98-001, 76 Pages, 1998/02
None
; Kitamura, Toshikatsu; Mizushima, Toshihiko; Kakuta, Tsunemi; ; ; ; ; ;
JAERI-M 91-212, 107 Pages, 1992/01
no abstracts in English
Fune No Kagaku, 44(5), p.60 - 66, 1991/05
no abstracts in English
Kawabata, Kuniaki; Ogane, Katsuji*; Sato, Noritaka*; Yamada, Taichi; Abe, Hiroyuki*; Igarashi, Hiroki*
no journal, ,
no abstracts in English
Mori, Airi; Sanada, Yukihisa; Seguchi, Eisaku; Kawabata, Tomoki; Munakata, Masahiro
no journal, ,
Count rates of radiation and the positional information (latitude, longitude, and height) are acquired simultaneously in airborne monitoring. The precision of positional information affects the air dose rates at 1 m height because air dose rates at 1 m height are calculated by correction of height. In this study, 3 GPS devices are used in addition to 1 GPS device which has been used in previous airborne monitoring. The most appropriate GPS device were determined by comparing precisions of positional information and influences on air dose rates at 1 m height.
Koizumi, Mitsuo; Takahashi, Tone; Tomikawa, Hirofumi; Kimura, Yoshiki
no journal, ,
no abstracts in English
Watanabe, Tsuyoshi; Asamori, Koichi; Umeda, Koji*
no journal, ,
We estimated the strain released by the 2016 Kumamoto earthquakes in the co- and post-seismic periods and the strain rate in the inter-seismic period using GPS data. Moreover, based on the active fault data, we estimated geological strain rate. From the results, we found that the shear strain as much as 7.103
10
strain was released by the M7.3 earthquake and the strain released within the first about 2.5 months following the main shock was estimated to be one order of magnitude smaller than that of the co-seismic period. Furthermore, the recurrence interval was estimated to be 3100 years by comparing geological strain rate and co-seismic strain released by the main shock. These results were good agreement with the recurrence interval evaluated from the active fault data.
Takahashi, Tone; Mochimaru, Takanori*; Koizumi, Mitsuo; Hironaka, Kota; Kato, Keigo*
no journal, ,
no abstracts in English
Watanabe, Tsuyoshi; Okuyama, Satoshi; Asamori, Koichi
no journal, ,
no abstracts in English
Kawabata, Kuniaki; Ogane, Katsuji*; Sato, Noritaka*; Yamada, Taichi; Abe, Hiroyuki*; Igarashi, Hiroki*
no journal, ,
no abstracts in English
