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Yokoyama, Sumi*; Hamada, Nobuyuki*; Hayashida, Toshiyuki*; Tsujimura, Norio; Tatsuzaki, Hideo*; Kurosawa, Tadahiro*; Nabatame, Kuniaki*; Oguchi, Hiroyuki*; Ono, Kazuko*; Kawaura, Chiyo*; et al.
Journal of Radiological Protection, 37(3), p.659 - 683, 2017/09
Times Cited Count：15 Percentile：82.15(Environmental Sciences)Since the International Commission on Radiological Protection recommended reducing the occupational equivalent dose limit for the lens of the eye in 2011, there have been extensive discussions in various countries. This paper reviews the current situations in radiation protection of the ocular lens and the discussions on the potential impact of the new lens dose limit in Japan. Topics include historical changes to the lens dose limit, the current situations in occupational lens exposures (e.g., in medical workers, nuclear workers, and Fukushima nuclear power plant workers) and measurements, and the current status of biological studies and epidemiological studies on radiation cataracts. Our focus is on the situations in Japan, but we believe such information sharing will be useful in many other countries.
(3) be made?Akahane, Keiichi*; Iimoto, Takeshi*; Ichiji, Takeshi*; Iwai, Satoshi*; Oguchi, Hiroyuki*; Ono, Kazuko*; Kawaura, Chiyo*; Kurosawa, Tadahiro*; Tatsuzaki, Hideo*; Tsujimura, Norio; et al.
Hoken Butsuri, 50(4), p.257 - 261, 2015/12
In a mixed field of photon and beta radiations, the same dose assigned to skin is normally assigned to the dose to the lens of the eye as a conservative estimate of H
(3). In exceptional cases that a very high beta dose might be imparted of the same order with the dose limit, however, the conservatively biased dose must be too limiting, and thereby an accurate estimate of beta (3) is desirable. This article presents a practical proposal of when and how the dosimetry of beta (3) should be made.
Akahane, Keiichi*; Iimoto, Takeshi*; Ichiji, Takeshi*; Iwai, Satoshi*; Oguchi, Hiroyuki*; Ono, Kazuko*; Kawaura, Chiyo*; Tatsuzaki, Hideo*; Tsujimura, Norio; Hamada, Nobuyuki*; et al.
Hoken Butsuri, 49(3), p.153 - 156, 2014/09
A brief review is given of the history and methodology of external dosimetry for the lens of the eye. Under the 1989 revision to domestic radiological protection regulations, the concept on the effective dose equivalent and the dose limit to the lens of the eye (150 mSv/y) both introduced in ICRP 1977 recommendations has changed nationwide the external monitoring methodology in non-uniform exposure situations to the trunk of a radiological worker. In such situations, often created by the presence of a protective apron, the worker is required to use at least two personal dosemeters, one worn on the trunk under the apron and the other, typically, at the collar over the apron. The latter dosemeter serves the dual purpose of providing the dose profile across the trunk for improved effective dose equivalent assessment and of estimating the dose to lens of the eye. The greater or appropriate value between (10) and (0.07), given by the dosemeter, is generally used as a surrogate of (3).
Senzaki, Masao; Naoi, Yosuke; Kuribayashi, Toshihiro; Hamada, Kazuko; Okumura, Yukiko
Proceedings of INMM 55th Annual Meeting (Internet), 10 Pages, 2014/07
JAEA has supported to HRD of mainly Asian countries in the field of SGs and SSAC, and works closely with governmental organizations in Japan, and with the IAEA, the U.S. DOE, EC, the flame work of FNCA, APSN. This paper presents the efforts, contributions and future challenges of JAEA to HRD regarding SGs and SSAC, through international cooperation, which have been taking place for around 20 years.
Hamada, Kazuko; Naoi, Yosuke; Senzaki, Masao
Proceedings of International Conference on Nuclear Security; Enhancing Global Efforts (CD-ROM), 8 Pages, 2014/03
This paper describes challenges to nuclear security capacity building support, introduces ISCN's experience in addressing these challenges, and discusses how to apply lessons learned to advance our nuclear security capacity building support.
Hamada, Kazuko
Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-34-Kai Nenji Taikai Rombunshu (Internet), 9 Pages, 2013/10
The Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) of the Japan Atomic Energy Agency (JAEA) is promoting capacity building support internationally in the aras of nuclear nonproliferation and security. While this kind of capacity building support is accelerating, it is increasingly recognized that many challenges exist to achieve effective capacity building support, such as gaps between needs and support contents and possible redundancies in various support activities. As a result, the effectiveness of capacity building support is seriously questioned, and greater importance is now attached to the harmonization among support activities. This paper will introduce the concepts and approache of ISCN's capacity building support, discuss the challenges for this support to serve for enduring efforts toward the enhanvement of nuclear nonproliferation and security and possible ways to overcome these challenges.
Naoi, Yosuke; Hamada, Kazuko; Noro, Naoko
Nihon Genshiryoku Gakkai-Shi ATOMO
, 55(9), p.524 - 528, 2013/09
The Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) provides training courses for Asian countries and the domestic concerned parties. ISCN has developed its original curriculum for these courses jointly with the Sandia National Laboratories (SNL) in the U.S. The base of the curriculum was the training course on the physical protection training course developed by SNL. In cooperation with SNL, ISCN developed the Physical Protection Exercise Field and the Virtual Reality system as tools for its original training programs. ISCN has already received over 1,200 participants from 33 countries (including Japan) to its human resources development activities (as of June 2013). In addition, ISCN expands its activities to organize workshops in order to promote understanding of the IAEA's revised recommendation on the physical protection of nuclear material, and to foster the nuclear security culture. Here, these activities of ISCN will be introduced.
Hamada, Kazuko
Kaigai Jijo, 61(3), p.42 - 55, 2013/03
The paper describes the recent international trend of nuclear security, identifies the challenges to the enhancement of international nuclear security regime, and discusses Japan's responsibility for nuclear security with the lessons learned from the Fukushima accident.
Hamada, Kazuko
Kaku Busshitsu Kanri Senta Nyusu, 41(12), p.7 - 8, 2012/12
This is the report on three guest presentations by Mr. Pietrangelo, Senior Vice President of Nuclear Energy Institute (NEI), Ms. Mann from URENCO, and Ms. Connery, Director of Nuclear Energy Policy of National Security Council at the closing session of the Fifty-Third Annual Meeting of Institute of Nuclear Materials Management (INMM) from July 15-19, 2012 at Orlando, Florida.
Kobayashi, Naoki; Naoi, Yosuke; Wakabayashi, Shuji; Naito, Aisaku; Hamada, Kazuko; Noro, Naoko; Matsuzawa, Reina
Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-33-Kai Nenji Taikai Rombunshu (Internet), 9 Pages, 2012/10
The Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) of the Japan Atomic Energy Agency has started its human capacity building activities, domestically and internationally, for the government officials and employees of companies of emerging nuclear power countries mainly in Asia. In this paper, I will describe the activities of ISCN on capacity building for these countries and also I will briefly describe, focusing on nuclear security, the activities of IAEA, Sandia National Laboratory of United States and the development of human capacity building support activities of neighboring countries of China and Korea. By doing this, I will describe the relationship and cooperation of ISCN with these organizations and talk about my personal views of the future development with these organizations and ISCN.
Naoi, Yosuke; Kobayashi, Naoki; Hamada, Kazuko; Noro, Naoko; Matsuzawa, Reina; Wakabayashi, Shuji; Nonaka, Nobuyuki; Senzaki, Masao; Scharmer, C.*; Duggan, R.*; et al.
Proceedings of INMM 53rd Annual Meeting (CD-ROM), 10 Pages, 2012/07
At the 2010 Washington Nuclear Security Summit, Japan committed to establish a regional center for the strengthening of nuclear security, mainly in Asia, through capacity building support including human resources training and infrastructure development assistance. In accordance with this statement, the Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) was inaugurated in December 2010 in Japan Atomic Energy Agency (JAEA). This paper describes the ISCN training activities and introduces the developing new training course on physical protection.
Hamada, Kazuko; Senzaki, Masao; Okubo, Michiaki; Naoi, Yosuke; Kobayashi, Naoki; Nguyen, N. H. V.*
Proceedings of INMM 53rd Annual Meeting (CD-ROM), 10 Pages, 2012/07
no abstracts in English
Hamada, Kazuko
Kaku Busshitsu Kanri Senta Nyusu, 38(9), p.9 - 12, 2009/09
no abstracts in English
Hamada, Kazuko
Progress in Nuclear Energy, 50(2-6), p.660 - 665, 2008/03
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)The Asia-Pacific region is destined to increase its use of nuclear energy in the coming decades. This projected increase will bring with it nuclear proliferation concerns, and thus, necessitates supplementary efforts designed to ensure nuclear security and a legitimate use of nuclear energy in addition to the NPT obligation. Nuclear transparency measures could be useful tools to build confidence that the increasing use of nuclear energy does not contribute to nuclear proliferation. These measures could also foster a cooperative tradition that can address rising concerns over nuclear trafficking and terrorism, which require regional coordination to combat. This paper describes various forms of potential transparency measures to expand the possibilities of the nuclear transparency concept and explore areas in which this concept might be applicable. This paper also clarifies some of the challenges involving transparency projects and suggests possible ways to address these challenges.
