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Journal Articles

The Impact of advanced technologies on the efficiencies of safeguards and facility operations

Hoffheins, B.; Miyaji, Noriko; Asano, Takashi; Nagatani, Taketeru; Ishiyama, Koichi; Kimura, Takashi; Kodani, Yoshiki

Proceedings of INMM 52nd Annual Meeting (CD-ROM), 10 Pages, 2011/07

Following Japan's conclusion of the Additional Protocol and the IAEA's broader conclusion regarding the peaceful nature of Japan's nuclear activities, the Japan government and facility operators have worked with the IAEA to apply integrated safeguards to increase inspection efficiency and to ensure verification correctness and completeness. These safeguards approaches rely heavily on the implementation of advanced technologies such as unattended surveillance and non-destructive assay measurement, automated nuclear material accounting, solution monitoring and remote monitoring. These technologies have enabled random interim inspections; they have also reduced the level of effort required for nuclear material accounting and inspection activities. A more comprehensive understanding of the impact of advanced technologies on operation and inspection processes would be useful for developing methodologies to support better system design and evaluation of existing systems.

Journal Articles

Development of integrated safeguards approach for JNC-1 site from the operator's viewpoint

Asano, Takashi; Fujiwara, Shigeo; Takahashi, Saburo; Nagatani, Taketeru; Fukuhara, Junichi; Kodani, Yoshiki; Kimura, Takashi; Miura, Yasushi

Proceedings of INMM 50th Annual Meeting (CD-ROM), 10 Pages, 2009/00

JAEA commenced to consider the integrated safeguards (IS) approach for JNC-1 site as the new concept of safeguards for further reduction of influence of facility operation by the safeguards activity. On the other hand, the board of governors of IAEA led the broader conclusion to Japan on June 2004 and safeguards implementation in Japan was transferred to the IS scheme in September 2004. IAEA aimed to improve efficiency of safeguards implementation for the plutonium handling facility by optimization of use of advanced safeguards systems and new safeguards regime without reduction of effectiveness of safeguards. The IS approach for JNC-1 site was developed and implemented on August 2008 after many discussions among IAEA, Japan Safeguards Office (JSGO) and JAEA. This paper shows contributions by JAEA to development of this approach from the operator's view point and influence to the operator by implementation of IS approach.

Oral presentation

Development of a comprehensive nuclear material accountancy system at JAEA

Takeda, Hideyuki; Usami, Masayuki; Hirosawa, Naonori; Fujita, Yoshihisa; Kodani, Yoshiki; Komata, Kazuhiro*

no journal, , 

no abstracts in English

Oral presentation

Enhancement of physical protection measure at JAEA based on the revised nuclear reactor regulation law

Kodani, Yoshiki; Tanuma, Koji; Ito, Toru

no journal, , 

The revised Nuclear Reactor Regulation Law aiming at strengthening of the physical protection taking into account of INFCIRC/225/Rev.4 requirement, which is the latest recommendations by IAEA was enforced in December, 2005. The primary points of revised law are (1) introduction of confidentiality on physical protection, (2) implementation of physical protection inspection, and (3) introduction of Design Basis Threat (DBT). In this report, it introduces about the point of the revised Nuclear Reactor Regulation Law, the overview of the instruction by regulatory authority and the overview of corresponding measure by JAEA.

Oral presentation

Operator's experience in random interim inspection for reprocessing plant at JNC-1 site

Ishiyama, Koichi; Miura, Yasushi; Kimura, Takashi; Hina, Tetsuro; Kodani, Yoshiki; Fukuhara, Junichi; Yamaguchi, Katsuhiro*; Ikeda, Atsushi*; Kabuki, Toshihide*

no journal, , 

Regarding the Integrated Safeguards (IS) for JNC-1 site where includes facilities of the Reprocessing Center and so on, its discussion for application started in March 2004 between the government of Japan and IAEA, and it has been introduced in August 2008. With IS for JNC-1, for the purpose of improvement of deterrence of the nuclear material diversion, the traditional interim inventory verification (IIV) has changed to random interim inspection with short notice (RII.) The Tokai Reprocessing Center consists of TRP and PCDF, and has nuclear materials from the spent fuel to the MOX powder. The IIV needed about 5 person-days for TRP and about 7 person-days for PCDF. It was discussed to make RII procedure that makes it possible to perform such short notice inspection and reduce the person-days by about 2 per a RII. After the introduction of RII, the person-days are decreased even though the operators' work loads for information provision are increased.

Oral presentation

Operator's experience on random inspection for reprocessing plant at JNC-1 site

Ishiyama, Koichi; Miura, Yasushi; Kimura, Takashi; Hina, Tetsuro; Kodani, Yoshiki; Fukuhara, Junichi; Yamaguchi, Katsuhiro*; Ikeda, Atsushi*; Kabuki, Toshihide*

no journal, , 

Regarding the Integrated Safeguards (IS) for JNC-1 site where includes six facilities of the Reprocessing Center and MOX fuel fabrication facilities and so on, its discussion for application started in June 2004 between the government of Japan and IAEA, its concept was agreed in November 2006, and it has been introduced in August 2008. With IS for JNC-1, for the purpose of improvement of deterrence of the nuclear material diversion, the traditional interim inventory verification (IIV) that had been implemented as scheduled previously has changed to random interim inspection with short notice (RII.)The Tokai Reprocessing Center consists of 2 facilities; TRP and PCDF, and has nuclear materials from the spent fuel to the MOX powder. The IIV needed about 5 person-days for TRP and about 7 person-days for PCDF. It was discussed to make RII procedure that makes it possible to perform such short notice inspection and reduce the person-days by about 2 per a RII. Although it was discussed that what and how frequently information was provided to inspectors in order them to make a plan to implement RIIs. After the introduction of RII, the person-days are decreased even though the operators' work loads for information provision are increased. This paper reports development of the method, experience and expected effectiveness regarding RII to the Tokai Reprocessing Center in the viewpoint of its operator.

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