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Oigawa, Hiroyuki; Sasa, Toshinobu; Kikuchi, Kenji; Nishihara, Kenji; Kurata, Yuji; Umeno, Makoto*; Tsujimoto, Kazufumi; Saito, Shigeru; Futakawa, Masatoshi; Mizumoto, Motoharu; et al.
Proceedings of 4th International Workshop on the Utilisation and Reliability of High Power Proton Accelerators, p.507 - 517, 2005/11
Under the framework of J-PARC, the Japan Atomic Energy Research Institute (JAERI) plans to construct the Transmutation Experimental Facility (TEF). The TEF consists of two facilities: the Transmutation Physics Experimental Facility (TEF-P) and the ADS Target Test Facility (TEF-T). The TEF-P is a critical facility which can accept a 600 MeV - 10 W proton beam. The TEF-T is a material irradiation facility using a 600 MeV - 200 kW proton beam, where a Pb-Bi target is installed, but neutron multiplication by nuclear fuel will not be attempted. This report describes the purposes of the facility, the present status of the conceptual design, and the expected experiments to be performed.
Morita, Yasuji; Kubota, Masumitsu*
JAERI-Review 2005-041, 35 Pages, 2005/09
JAERI-Review-2005-041.pdf:2.24MB
Research and development on Partitioning in JAERI are reviewed in the present report from the beginning to the development of the 4-Group Partitioning Process and its test with real high-level liquid waste (HLLW). In the 3-Group Partitioning Process established in around 1980, elements in HLLW are separated into 3 groups of transuranium element group, Sr-Cs group and the other element group. The 4-Group Partitioning Process subsequently developed contains the separation of Tc-platinum group metals additionally. The process was tested to demonstrate its performance with real concentrated HLLW. Until then, various separation methods for various elements were studied and selection and optimization of the separation methods were carried out to establish the process. Review of the experience, findings and results is very important and valuable for future study on partitioning. The present report is prepared from this point of view.
Oigawa, Hiroyuki
Genshikaku Kenkyu, 47(6), p.39 - 52, 2003/03
Minor actinide (MA) and long-lived fission product (LLFP) keep their radiological toxicity in high level waste of nuclear fuel cycle for long period. In order to transmute such nuclides to short-lived or stable ones, the Accelerator-Driven Transmutation System (ADS) is proposed and developed. This article presents the current status of the research and development on ADS, technical issues to be solved, the experimental program under the framework of the High-Intensity Proton Accelerator Project (J-PARC), and worldwide activities.
Sasa, Toshinobu; Oigawa, Hiroyuki; Kikuchi, Kenji; Ikeda, Yujiro
Proceedings of American Nuclear Society Conference "Nuclear Applications in the New Millennium" (AccApp-ADTTA '01) (CD-ROM), 7 Pages, 2002/00
A design study of the accelerator-driven system (ADS) for transmutation of minor actinides and long-lived fission products has been performed at Japan Atomic Energy Research Institute (JAERI) under the national OMEGA program. To solve the technical issues related to the ADS development, a transmutation experimental facility (TEF) is planned to bulid under the JAERI-High Energy Accelerator Research Organization joint project. The TEF consists of two facilities, Transmutation Physics Experimental Facility and Transmutation Engineering Experimental Facility. Proton beams of 600 MeV and 0.3 mA are to be delivered to this facility. The presentation describes a conceptual design study of the TEF.
IAEA-TECDOC-985, 0, p.32 - 43, 1997/11
no abstracts in English
; Takizuka, Takakazu; Sasa, Toshinobu; Takada, Hiroshi; Meigo, Shinichiro
Proc. of ASME
JSME 4th Int. Conf. on Nuclear Engineering 1996 (ICONE-4), 2, p.461 - 468, 1996/00
no abstracts in English
Dai-26-Kai Robutsuri Kaki Semina, Tekisuto; Shometsu Shori Kenkyu, 0, p.47 - 66, 1994/00
no abstracts in English
Nishihara, Kenji; Makino, Hitoshi; Koo, Shigeru*
no journal, ,
In the ImPACT project, transmutation technology of long-lived fission products (LLFPs) is being developed in addition to minor actinides (MAs) transmutation studied in other programs. If MAs, LLFPs, and heat-generating fission products (FPs), which are Sr-90 and Cs-137, are removed from high-level waste (HLW), drastic benefit is anticipated on the disposal of HLW. In the present study, we tried to estimate two impacts through transport analysis of radionuclide: (1) disposal of the waste after transmutation in the deep underground repository designed for the conventional HLW, and (2) disposal of the waste after transmutation in the intermediate depth disposal designed for the low level radioactive wastes such as hull and end-pieces of the spent fuel assembly. As the result, the reduction of public dose in analysis (1) was observed, and the dose was enough small in analysis (2).