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Journal Articles

Recent statistical topics of nuclear material inventory verification

Kikuchi, Masahiro*; Suzuki, Mitsutoshi

Wiley StatsRef; Statistics Reference Online (Internet), 7 Pages, 2018/03

A near-real-time accountancy (NRTA) as a timely statistical test method for nuclear material inventory verification in international safeguards has a unique feature and development history, and it has been maintained and updated in large nuclear facilities in Japan. A recent discussion on approaches of measurement uncertainty may have impacted on the decision criteria of NRTA because its development origin dates back to the 1970's and derived from the conventional random and systematic error model. In this article, we will show the overview associated with this issue.

Journal Articles

Operator's contribution on the improvement of RII scheme against the process operation at PCDF

Nakamura, Hironobu; Shimizu, Yasuyuki; Makino, Risa; Mukai, Yasunobu; Ishiyama, Koichi; Kurita, Tsutomu; Ikeda, Atsushi*; Yamaguchi, Katsuhiro*

Proceedings of INMM 57th Annual Meeting (Internet), 9 Pages, 2016/07

Regarding the Integrated Safeguards (IS) in Japan, the implementation of IS has been started on September 2004, and the concept has been introduced to the JNC-1 facilities since August 2008. Then, random interim inspection with short notice and reducing person-days of inspection (PDI) was introduced instead of traditional scheduled IIV in order to improve deterrence of the nuclear material diversion with timeliness goal. And it was agreed that it should be evaluated and reviewed because RII was designed when inter-campaign. In JAEA, we decided to restart PCDF campaign to reduce potential safety risks of reprocessing facilities. To adopt the RII scheme to the process operation in campaign, JAEA proposed a new scheme to JSGO and IAEA without increasing PDI and reducing detection probability. As a result of the discussion, it was agreed and successfully introduced since March 2014. The new scheme for PCDF consists of scheduled inspection (fixed-day RII), reduction of estimated material for the verification, implementation of remote monitoring with data provision, improvement of operational status check list, introduction of NRTA and MC&A data declaration with timeliness. Though the operator's workloads for information provision were increased, we could manage to balance IS requirement with implementation of our operation successfully. This contribution was helped to safeguards implementation and our operation for 2 years.

Journal Articles

JAEA-ISCN development programs of advanced NDA technologies of nuclear material

Seya, Michio; Kobayashi, Naoki; Naoi, Yosuke; Hajima, Ryoichi; Soyama, Kazuhiko; Kureta, Masatoshi; Nakamura, Hironobu; Harada, Hideo

Book of Abstracts, Presentations and Papers of Symposium on International Safeguards; Linking Strategy, Implementation and People (Internet), 8 Pages, 2015/03

JAEA-ISCN has been implementing basic development programs of the advanced NDA technologies for nuclear material (NM) since 2011JFY (Japanese Fiscal Year), which are (1) NRF (Nuclear resonance fluorescence) NDA technology using laser Compton scattered (LCS) $$gamma$$-rays (intense mono-energetic $$gamma$$-rays), (2) Alternative to $$^{3}$$He neutron detection technology using ZnS/B$$_{2}$$O$$_{3}$$ ceramic scintillator, and (3) NRD (Neutron resonance densitometry) using NRTA (Neutron resonance transmission analysis) and NRCA (Neutron resonance capture analysis). These programs are going to be finished in 2014JFY and have demonstration tests in February - March 2015.

JAEA Reports

NRTA data processing system: PROMAC-J

Ikawa, Koji; Ihara, Hitoshi; Nishimura, Hideo

JAERI-M 93-182, 160 Pages, 1993/09

JAERI-M-93-182.pdf:3.31MB

no abstracts in English

Journal Articles

A Study of statistical tests for near real time materials accountancy, 2

Ihara, Hitoshi; Yamamoto, Yoichi

Dai-13-Kai Kaku Busshitsu Kanri Gakkai Nihon Shibu Nenji Taikai Rombunshu, p.20 - 27, 1992/06

no abstracts in English

JAEA Reports

An NRTA data processing system: PROMAC-J

Ihara, Hitoshi; Nishimura, Hideo; Ikawa, Koji

JAERI-M 91-042, 168 Pages, 1991/03

JAERI-M-91-042.pdf:3.51MB

no abstracts in English

Journal Articles

Development of a real time simulation system to demonstrate the use of the near-real-time materials accountancy, II

Ihara, Hitoshi; Yamamoto, Yoichi; Nishimura, Hideo; Ikawa, Koji; *

Dai-11-Kai Kaku Busshitsu Kanri Gakkai Nenji Taikai Rombunshu, p.23 - 30, 1990/06

no abstracts in English

JAEA Reports

Study of relationship between MUF correlation and detection sensitivity of statistical analysis

; Ihara, Hitoshi; Yamamoto, Yoichi; Ikawa, Koji

JAERI-M 89-171, 152 Pages, 1989/11

JAERI-M-89-171.pdf:4.1MB

no abstracts in English

JAEA Reports

A Study of statistical tests for Near-Real-Time Materials Accountancy using field test data of Tokai Reprocessing Plant

Ihara, Hitoshi; Nishimura, Hideo; Ikawa, Koji; *; *; *

JAERI-M 88-059, 105 Pages, 1988/03

JAERI-M-88-059.pdf:2.9MB

no abstracts in English

Journal Articles

A Study of statistical tests for near real time materials accountancy

Ihara, Hitoshi; *; Ikawa, Koji

Dai-9-Kai Kaku Busshitsu Kanri Gakkai Nenji Taikai Rombunshu, p.84 - 89, 1988/00

no abstracts in English

Journal Articles

Development of NRTA data proceeding system with UNIFY data base management system

Ihara, Hitoshi; *; Ikawa, Koji; *

Dai-9-Kai Kaku Busshitsu Kanri Gakkai Nenji Taikai Rombunshu, p.78 - 83, 1988/00

no abstracts in English

Journal Articles

Development of a near real time materials accountancy data processing system and evaluation of statistical analysis methods using field test data

; ; ; *; *; *

Nuclear Safeguards Technology 1986,Vol.1, p.341 - 352, 1987/00

no abstracts in English

Oral presentation

R&D of active neutron NDA techniques for nuclear nonproliferation and nuclear security, 4; Study on a compact NRTA system

Kitatani, Fumito; Tsuchiya, Harufumi; Maeda, Makoto; Kureta, Masatoshi

no journal, , 

no abstracts in English

13 (Records 1-13 displayed on this page)
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