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Sekio, Yoshihiro; Yoshimochi, Hiroshi; Kosaka, Ichiro; Hirano, Hiroyasu; Koyama, Tomozo; Kawamura, Hiroshi
Proceedings of 52nd Annual Meeting of Hot Laboratories and Remote Handling Working Group (HOTLAB 2015) (Internet), 8 Pages, 2015/09
Due to the Fukushima Daiichi Nuclear Power Plant accident in March 2011, the safe and secure implementations of the decommissioning for Fukushima Daiichi Nuclear Power Plant has been positioned as the urgent tasks in Japan. Japan Atomic Energy Agency has a critical mission of analysing radioactive wastes having generated by the accident for long-term storage and disposal methods. This will be performed in two hot laboratories to be constructed in Okuma Analysis and Research Center at Fukushima Daiichi Nuclear Power Plant site. In one laboratory, radioactive wastes such as rubbles and secondary wastes will be treated, whereas debris such as fuel debris and high dose structural materials will be handled in the other laboratory. The detail considerations for advanced techniques and experimental apparatus to be installed are underway.
Higuchi, Hidetoshi; Koizumi, Kenji; Hirano, Hiroyasu; Tasaka, Masayuki*; Washiya, Tadahiro; Kobayashi, Tsuguyuki*
Journal of Power and Energy Systems (Internet), 4(1), p.244 - 251, 2010/04
no abstracts in English
Kitagaki, Toru; Tasaka, Masayuki; Higuchi, Hidetoshi; Koizumi, Kenji; Hirano, Hiroyasu; Washiya, Tadahiro; Kobayashi, Tsuguyuki*
Proceedings of 17th International Conference on Nuclear Engineering (ICONE-17) (CD-ROM), 5 Pages, 2009/06
JAEA has been developing a reliable disassembly system for FBR fuel reprocessing as a part of Fast Reactor Cycle Technology Development (FaCT). We fabricated the disassembly system testing machine. In this paper, we described design of it.
Hirano, Hiroyasu
Saikuru Kiko Giho, (23), 0 Pages, 2004/00
Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.
; Hirano, Hiroyasu; Koyama, Tomozo
OECD/NEA 7th information exchange meeting, 0 Pages, 2002/00
None
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PNC TJ8409 91-001, 146 Pages, 1991/03
Based on literatures collected by PNC, technical informations of TRUEX process has been surveyed. In order to make clear whether the informations necessary for the process evaluation are avairable or not, informaitons obtained from the literatures are arranged and combined for future R&D planing. This report describes a present status of TRUEX process development in the US and Italy, the data on physical properties of TRUEX solvent, and extraction-separation behaviors of TRU, FP and inactive elements have been arranged and filed for the process evaluation. Merits and demerits of the TRUEX process have been compared with those of two other processes (DIDPA : JAERI and Malonamides : CENFAR) Which have the same objectives as that of the TRUEX process. Further, R&D plans necessary for the conformation of applicability and for the realisation of this process have been proposed.
; Hirano, Hiroyasu; ; Tanaka, Yasumasa; Kawata, Tomio
International Conference on Envilonmental of Fuel, ,
None
Hirano, Hiroyasu; Nomura, Kazunori; ; ; ;
International Information Exchange Programe on Actinide & Fission Product Separation & Transmutation, ,
None
Hirano, Hiroyasu; ; ; Nomura, Kazunori; ;
International Information Exchange Programe on Actinide & Fission Product Separation & Transmutation, ,
None
Arai, Yoichi; Fujisaku, Kazuhiko*; Koizumi, Satoshi*; Ogino, Hideki; Hirano, Hiroyasu
no journal, ,
no abstracts in English
Higuchi, Hidetoshi; Koizumi, Kenji; Hirano, Hiroyasu; Kitagaki, Toru; Takeuchi, Masayuki; Washiya, Tadahiro; Kobayashi, Tsuguyuki*
no journal, ,
no abstracts in English
Ogino, Hideki; Hirano, Hiroyasu; Ishii, Hideyuki*; Sakamoto, Yukio*
no journal, ,
no abstracts in English
Kunii, Kanako*; Misumi, Ryuta*; Nishi, Kazuhiko*; Kaminoyama, Meguru*; Hirano, Hiroyasu; Ogino, Hideki; Sano, Yuichi
no journal, ,
no abstracts in English
Shibata, Atsuhiro; Yano, Kimihiko; Sambommatsu, Yuji; Nakahara, Masaumi; Takeuchi, Masayuki; Hirano, Hiroyasu; Nakajima, Yasuo; Washiya, Tadahiro
no journal, ,
no abstracts in English
Sano, Yuichi; Takeuchi, Masayuki; Hirano, Hiroyasu; Hoshino, Kuniyoshi*; Kawamura, Fumio*
no journal, ,
no abstracts in English
irradiationSakamoto, Atsushi; Ogino, Hideki; Fujisaku, Kazuhiko*; Koizumi, Satoshi*; Hirano, Hiroyasu
no journal, ,
no abstracts in English
Sano, Yuichi; Takeuchi, Masayuki; Hoshi, Masayuki; Sakauchi, Nobuyuki; Hirano, Hiroyasu; Uchiyama, Gunzo; Nojima, Yasuo*; Fujine, Sachio*
no journal, ,
no abstracts in English
Koma, Yoshikazu; Shibata, Atsuhiro; Nakahara, Masaumi; Ogino, Hideki; Arai, Yoichi; Onishi, Hiroyuki*; Nakajima, Yasuo; Hirano, Hiroyasu; Washiya, Tadahiro
no journal, ,
Concerning reprocessing technology for spent FBR fuel, the results of development on solvent extraction for co-recovery of U, Pu and Np will be reviewed. Chemical processing simplified by considering the condition that moderate decontamination is allowed and centrifugal contactor that provides better plant operating ratio and less Pu inventory were developed.
Kunii, Kanako*; Misumi, Ryuta*; Nishi, Kazuhiko*; Kaminoyama, Meguru*; Hirano, Hiroyasu; Ogino, Hideki; Sano, Yuichi
no journal, ,
The flow patterns at 1750 and 3500 rpm of a rotor speed were compared each other. In both cases, the liquid is flowing along a rotational direction of the rotor in the region surrounded by two vanes on the vessel bottom and the vessel wall, and then the liquid goes into the separation zone in the rotor. At lower speed, the mean velocities are roughly proportional to flow rates. At higher speed, the liquid is separated into two regions in the height direction, that is, one of them is near the vanes and another is around a lower side of the rotor. The mean velocities around the vessel bottom are not proportional to flow rates. The reason is inferred that the liquid fed in the vessel takes a shortcut and goes into the rotor instead of passing through between two vanes.
