著者
稲村 智昌 班目 春樹
出版者
一般社団法人 日本原子力学会
雑誌
日本原子力学会和文論文誌 (ISSN:13472879)
巻号頁・発行日
vol.8, no.4, pp.320-331, 2009 (Released:2012-02-22)
参考文献数
31
被引用文献数
1 1

The confidentiality system concerning the physical protection of nuclear materials and nuclear facilities was enacted by revision of the Nuclear Reactor Regulation Law in 2005. We made a comparative analysis with the information security in governmental agencies or financial sectors, in order to consider the way the sensitive information management concerning the physical protection of nuclear materials and nuclear facilities should be. The considerations in this paper are as follows. (1) In order to secure a suitable level of security, close cooperation should be achieved among related governmental agencies. (2) A cycle that continuously evaluates whether suitable management is performed should be established. (3) Excessive secretiveness should be eliminated. (4) An information-sharing system among the related persons beyond the frame of governmental agencies and electricity companies should be established. (5) Improvement in the social acceptability of the sensitive information management is important. (6) Although it is important to perform evaluation by the consideration of suitable balance with information disclosure, it is also important that it is positively shown to society.
著者
中田 翔治 高嶋 隆太 長野 浩司 木村 浩 班目 春樹
出版者
Atomic Energy Society of Japan
雑誌
日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan (ISSN:13472879)
巻号頁・発行日
vol.9, no.3, pp.252-270, 2010-09-01
被引用文献数
1

Replacement of nuclear power plants has the possibility of affecting the management of electric power suppliers. Therefore, in the nuclear policy, a depreciation method as an equalization method, which means that part of the investment cost is accumulated as an allowance, and after the start of operation, the depreciation cost in the replacement project is equalized, has been introduced in Japan. In this paper, we evaluate the replacement of nuclear power plants by taking into account the uncertainty of operating costs and the depreciation cost in order to examine the effect of the depreciation method on the decision criteria of the replacement. We found that the equalization method is effective for inducing the acceleration of the replacement. Furthermore, we show the relationship between the uncertainty and the depreciation method. It turns out that as uncertainty increases, the difference in investment threshold between the equalization method and the existing depreciation method decreases, and that in option value increases.<br>
著者
中村 友道 廣田 和生 友松 健一 高井 睦夫 岩瀬 敏彦 宇和川 誠一 班目 春樹 岩壺 卓三 齋藤 孝基
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集 C編 (ISSN:03875024)
巻号頁・発行日
vol.68, no.668, pp.1064-1072, 2002-04-25 (Released:2008-02-26)
参考文献数
7
被引用文献数
1 1

A partial but full-size mock-up test of practical steam-generator U-bend tubes in nuclear power plants has been carried out, where the test model has been set in a HFCF-123 fluid two-phase flow loop. U-bend tubes are supported with so-called "Anti-vibration Bars (AVB) ", which have two types of AVBs in Japan, 7-span type and 5-span one. Both types of AVBs have been examined and it is found that tubes with AVB supports shows no large amplitude vibration up to 150% flow rate to the practical condition. Basic data for the fluidelastic instability are obtained when some tubes have been set to be flexible at some contact points with AVBs.
著者
班目 春樹 木村 浩 古田 一雄 田邉 朋行 長野 浩司 鈴木 達治郎 谷口 武俊 中村 進 高嶋 隆太 稲村 智昌 西脇 由弘
出版者
東京大学
雑誌
基盤研究(B)
巻号頁・発行日
2006

わが国における原子力開発利用の歴史はおよそ半世紀になる。この間、わが国における原子力規制はその規制構造を殆ど変えることなく今日にいたっている。このため、現在の原子力規制は合理性・実効性を欠き、信頼醸成を阻害する原子力システムをもたらしている。そこで、本研究では、原子力安全規制に関する知的インフラに関連する論点に焦点をあてて分析を実施し、原子力規制に関する適切なガバナンスを実現するためのフィールドの創出と論点の整理・政策提言を行った。
著者
菅原 慎悦 稲村 智昌 木村 浩 班目 春樹
出版者
Atomic Energy Society of Japan
雑誌
日本原子力学会和文論文誌 (ISSN:13472879)
巻号頁・発行日
vol.8, no.2, pp.154-164, 2009 (Released:2012-02-22)
参考文献数
20
被引用文献数
6 5

In Japan, safety of nuclear facilities is regulated by the central government and local governments are responsible for protecting the local public. To operate nuclear facilities in local communities, local governments would conclude safety agreements with power companies. In recent years, local governments have used the safety agreements as excuse for delaying the operations of nuclear facilities. The legal basis of the safety agreements was questioned by some who considered that this was the cause of the stranded relationship between local governments and power companies, and in some cases, the interrupted nature of electricity supply. To understand the sources of this difficult relationship, safety agreements must be analyzed, although these documents may have undergone revisions, and various regulations may have changed. By analyzing the safety agreements and revisions, we found that the relationship between local governments and power companies gradually changed over time, which can be divided into the following 3 stages: (1) in the early 70s, the dawn stage when local governments groped with the situation of nuclear facilities built in their communities; (2) from late 70s to 90s, the stage when local governments demanded information, and (3) from late 90s to present, the stage when local governments demand information and trustworthiness. This paper shows the results of analyzing the relationship changes between local governments and power companies. We conclude that viewpoints of local governments on nuclear power evolve, as social responsibilities of power companies stipulated in safety agreements also evolve over time.
著者
松江 寿記 大野 俊介 木村 浩 班目 春樹
出版者
一般社団法人 日本原子力学会
雑誌
日本原子力学会 年会・大会予稿集
巻号頁・発行日
vol.2005, pp.11, 2005

日本の技術倫理教育では、倫理を知識として獲得する事に重点を置く傾向がある。しかし、倫理問題を解決するには、型にはまった技術倫理の知識だけでは不十分といえる。そこで、我々のグループが開発しているe-ラーニングソフトウェア『技術倫理討論会』は、「ケーススタディ」と「ディスカッション」を中心に据えて設計・構築されている。具体的には、倫理的判断が難しい事例を「ケーススタディ」としてFLASHムービーを用いて表示した。加えて、ケーススタディ別に電子掲示板を用意し、ユーザーがケーススタディの解決方法に関する「ディスカッション」を行う場を提供した。ここで討論することにより、ユーザーは自分自身では思いつかなかったような対処法や他人の価値観を知り、独り善がりな考え方に陥る事を予防する。本ソフトウェアをWWW上で公開し、その結果を検討・考察し、より効果的な教育プログラムの開発を進めていく。
著者
中田 翔治 高嶋 隆太 長野 浩司 木村 浩 班目 春樹
出版者
一般社団法人 日本原子力学会
雑誌
日本原子力学会和文論文誌 (ISSN:13472879)
巻号頁・発行日
vol.9, no.3, pp.252-270, 2010 (Released:2012-02-08)
参考文献数
16
被引用文献数
1 1

Replacement of nuclear power plants has the possibility of affecting the management of electric power suppliers. Therefore, in the nuclear policy, a depreciation method as an equalization method, which means that part of the investment cost is accumulated as an allowance, and after the start of operation, the depreciation cost in the replacement project is equalized, has been introduced in Japan. In this paper, we evaluate the replacement of nuclear power plants by taking into account the uncertainty of operating costs and the depreciation cost in order to examine the effect of the depreciation method on the decision criteria of the replacement. We found that the equalization method is effective for inducing the acceleration of the replacement. Furthermore, we show the relationship between the uncertainty and the depreciation method. It turns out that as uncertainty increases, the difference in investment threshold between the equalization method and the existing depreciation method decreases, and that in option value increases.
著者
鳥飼 誠之 小澤 通裕 鐘ヶ江 直道 谷 雅明 班目 春樹 宮越 直樹
出版者
一般社団法人 日本原子力学会
雑誌
日本原子力学会和文論文誌 (ISSN:13472879)
巻号頁・発行日
vol.9, no.4, pp.347-359, 2010 (Released:2012-02-08)
参考文献数
12
被引用文献数
1 2

On March 30, 2007, Japan's electric utilities reported the results of a complete review of their power-generating units to the Nuclear and Industrial Safety Agency of the Ministry of Economy, Trade, and Industry (METI). The Ethics Committee of the Atomic Energy Society of Japan (AESJ) then recommended an assessment method to analyze the seriousness of the problems from multiple perspectives in order to support the public's understanding of the reported problems. Accordingly, the Ethics Committee conducted the assessment. The assessment considered each reported problem associated with nuclear power-generating units and the preventive measures completed between June 2007 and September 2008 (corrective measures continued beyond that period). The results were presented at the autumn conferences of AESJ in 2007 and 2008, and are discussed in this report.