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Naoi, Yosuke; Oda, Tetsuzo; Tomikawa, Hirofumi
Nihon Genshiryoku Gakkai-Shi ATOMO, 58(9), p.536 - 541, 2016/09
Japan has been promoting nuclear energy research and development, and the use of nuclear energy for only peaceful purposes in accordance with Atomic Energy Basic Acts enacted in 1955. In order to ensure limited to their peaceful utilization, it has been performing a nuclear material accountancy and reporting it based on bilateral nuclear agreement (Japan and the United States, Japan and France, Japan and Canada and so on) before concluding the comprehensive safeguards agreement with the IAEA. After the conclusion of that in 1977, the Japanese national law had been revised. The nuclear material accountancy and its reports to the IAEA have been implemented based on the revised law. In 1999, Japan ratified the additional protocol. Then it has been responding a new obligation in the additional protocol. The correctness and completeness of the declaration of nuclear activities in Japan have been verified by the IAEA, and then the "broader conclusion" was given to Japan in 2004. There indicates no diversion or undeclared nuclear activities in Japan. Since then Japan has been obtaining the "broader conclusion" every year. In this report we will report the JAEA's contribution to the IAEA safeguards on technical research and development and human resource development.
Takamatsu, Kuniyoshi
Hokeikyo Nyusu, (56), p.2 - 4, 2015/10
JP, 2010-166333In our study, we focused on a nondestructive inspection method by cosmic-ray muons which could be used to observe the internal reactor from outside the RPV and the CV. We conducted an observation test on the HTTR to evaluate the applicability of the method to the internal visualization of a reactor. We also analytically evaluated the resolution of existing muon telescopes to assess their suitability for the HTTR observation, and were able to detect the major structures of the HTTR based on the distribution of the surface densities calculated from the coincidences measured by the telescopes. Our findings suggested that existing muon telescopes could be used for muon observation of the internal reactor from outside the RPV and CV.
Takamatsu, Kuniyoshi
Nihon Genshiryoku Gakkai-Shi ATOMO, 57(6), p.389 - 393, 2015/06
In our study, we focused on a nondestructive inspection method by cosmic-ray muons which could be used to observe the internal reactor from outside the RPV and the CV. We conducted an observation test on the HTTR to evaluate the applicability of the method to the internal visualization of a reactor. We also analytically evaluated the resolution of existing muon telescopes to assess their suitability for the HTTR observation, and were able to detect the major structures of the HTTR based on the distribution of the surface densities calculated from the coincidences measured by the telescopes. Our findings suggested that existing muon telescopes could be used for muon observation of the internal reactor from outside the RPV and CV.
Takamatsu, Kuniyoshi; Takegami, Hiroaki; Ito, Chikara; Suzuki, Keiichi*; Onuma, Hiroshi*; Hino, Ryutaro; Okumura, Tadahiko*
Annals of Nuclear Energy, 78, p.166 - 175, 2015/04
Times Cited Count:12 Percentile:67.89(Nuclear Science & Technology)In our study, we focused on a nondestructive inspection method by which cosmic-ray muons could be used to observe the internal reactor from outside the RPV and the CV. We conducted an observation test on the HTTR to evaluate the applicability of the method to the internal visualization of a reactor. We also analytically evaluated the resolution of existing muon telescopes to assess their suitability for the HTTR observation, and were able to detect the major structures of the HTTR based on the distribution of the surface densities calculated from the coincidences measured by the telescopes. Our findings suggested that existing muon telescopes could be used for muon observation of the internal reactor from outside the RPV and CV.
Shibata, Taiju; Ishihara, Masahiro
Transactions of 17th International Conference on Structural Mechanics in Reactor Technology (SMiRT-17) (CD-ROM), 8 Pages, 2003/08
no abstracts in English
Takeda, Takeshi; Furusawa, Takayuki; Shinozaki, Masayuki*; Miyamoto, Satoshi*
Nuclear Engineering and Design, 217(1-2), p.153 - 166, 2002/08
Times Cited Count:2 Percentile:16.45(Nuclear Science & Technology)no abstracts in English
Takeda, Takeshi; Furusawa, Takayuki; Miyamoto, Satoshi*
JAERI-Tech 2001-050, 37 Pages, 2001/07
no abstracts in English
Naka, Michihiro; ; Ooka, Norikazu; ; Ito, Haruhiko; Baba, Osamu
Proc. of CORENDE, 3 Pages, 1997/00
no abstracts in English
Ishihara, Masahiro; Saikusa, Akio; Iyoku, Tatsuo; Shiozawa, Shusaku; Ooka, Norikazu; ;
JAERI-M 93-252, 39 Pages, 1994/01
no abstracts in English