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Journal Articles

Improvement of engineer ethics education using resilience engineering concept

Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*

Kogaku Kyoiku, 69(3), p.3 - 10, 2021/05

The purpose of engineering ethics education is to understand the effects and impacts of technology on society and nature and the responsibilities that engineers have to fulfill for society. There are many cases used in the educational method so that the students can understand the problems surrounding the engineers. However, most of the cases correspond to event scenarios where engineers have failed to maintain safety. Resilience engineering was born from the criticism of safety measures for the purpose of preventing recurrence by seeking human error and organizational culture as the cause of accidents in the field of ergonomics. Its features are that people are considered as beings that realize safety in dangerous systems, and that they focus on good practices. This paper describes the improvement of engineering ethics education by utilizing resilience engineering concept.

Journal Articles

Enhancing emergency response in the field based on analysis of workload distribution at Fukushima Daiichi Nuclear Power Station

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

Nihon Genshiryoku Gakkai Wabun Rombunshi, 18(2), p.55 - 68, 2019/06

This study aims to improve the potential of an emergency response by analyzing the workload management during the accident at the Emergency Response Center (ERC) of TEPCO's Fukushima Daiichi Nuclear Power Plant. Specifically, the research focused on the response of the ERC during the time between the discontinuation of Unit 3 core water injection and its recovery. It identified the different types of workload at the ERC had and how they had been managed based on the record of a TV conference. It also deduced the casual factors of the responses, supplementing the interview record of the director of ERC at the time by applying workload management analysis. On the basis of these findings, lessons to enhance the potential of the on-site emergency response have been obtained for ERC and outside organizations.

Journal Articles

Lessons learned from the process focusing on achieving the state of cold shutdown of Fukushima Daiichi Nuclear Power Plant Accident

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

Ningen Kogaku, 54(3), p.124 - 134, 2018/06

Fukushima Daiichi Nuclear Power Plant caused a severe accident which released a large amount of radioactivity triggered by the Great East Japan Earthquake. The existing investigation reports of the accident prepared by several institutions pay attention only to the process which caused the accident but not much to the accident mitigation or the recovery process. This study focused on Unit 3 of Fukushima Daiichi Nuclear Power Plant, including its recovery process from the accident. Based on the public data, the time sequences for the recovery process between the accident occurrence and the state of cold shutdown were classified. Then, the groups of actions were sorted out in terms of ergonomics viewpoint. The important responses in the recovery process were identified and analyzed referring to the m-SHEL model. As a result, new lessons were learned from the accident case regarding the actions required for recovering from the accident.

Journal Articles

Study on improving safety by applying Safety-II concept based on accident responding analysis for Fukushima Daiichi Nuclear Power Plant

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

Ningen Kogaku, 54(1), p.1 - 13, 2018/02

AA2017-0637.pdf:1.46MB

The two approaches as the concepts to ensure safety of the complicated socio-technical systems have been proposed by Hollnagel. They are the safety concepts called "Safety-I" to reduce risks and "Safety-II" to expand successes. The resilience engineering is suggested as the methodology to achieve Safety-II. The study analyzes the recovery of the water injection of Unit 3 based on the resilience engineering, focusing on the fact that preventing further progress of the accident case in Fukushima Daiichi Nuclear Power Plant which has been evaluated for extracting risk factors. Based on those results, the study has clarified the method of learning to enhance safety which has a different view from existing accident investigation.

Journal Articles

Lessons learned from emergency response during severe accident at Fukushima Daiichi Nuclear Power Plant viewed in human resource development

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

Nihon Kikai Gakkai Rombunshu (Internet), 83(856), p.17-00263_1 - 17-00263_17, 2017/12

Journal Articles

Results of Demonstration Program on Utilization and Post-irradiation Examination of MOX Fuel in Japan

Ichikawa, Michio*; *; *; *; *; Mitsugi, Takeshi; *; Ito, Kunio*; *; Doi, Soichi*; et al.

Nihon Genshiryoku Gakkai-Shi, 39(2), p.93 - 111, 1996/00

None

Oral presentation

Oral presentation

Investigation into execution program of safety improvement based on Resilience Engineering, 2; Program aiming at staff's attitude improvement by organization learning

Yoshizawa, Atsufumi*; Matsumoto, Atsushi*; Oba, Kyoko; Kitamura, Masaharu*

no journal, , 

no abstracts in English

Oral presentation

Leading and lagging indicators for safety of large-scale socio-technical systems

Kitamura, Masaharu*; Oba, Kyoko; Yoshizawa, Atsufumi*

no journal, , 

Oral presentation

Experiences in Fukushima Dai-ichi Nuclear Power Plant in light of resilience engineering

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

no journal, , 

Oral presentation

Oral presentation

Improvement of case study in engineering ethics; Effective use of Fukushima-Daiichi Accident

Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Enhancement of organizational resilience in light of the Fukushima Dai-ichi Nuclear Power Plant accident, 3; Analysis of Unit 5 operation by time-flow responding structure

Yoshizawa, Atsufumi*; Kunito, Susumu*; Oba, Kyoko; Kitamura, Masaharu*

no journal, , 

no abstracts in English

Oral presentation

Extract a lesson from the Fukushima Daiichi Nuclear Power Plant Accident in the light of Safety-II; People perform an important role at the respond to a risk on an accident

Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*

no journal, , 

This study introduces the necessity of stepping up the concept from Safety-I, risk removal type of safety, to the Safety-II, which aims to enhance system flexibility and resilience. In order to achieve Safety-II, the Fukushima Daiichi Nuclear Power Plant accident was investigated by using Resilience Engineering, which is the methodology going toward Safety-II. Focusing on responding, which is one of the four cornerstones of Resilience Engineering, workers in the Fukushima Daiichi Nuclear Power Plants executed flexible ideas to prevent catastrophic damage of the accident. Those responding were created by human with strong attitude in which few investigation reports mentioned. Those approaches show the importance of the Safety-II concept and Resilience Engineering methodology.

Oral presentation

Nuclear risk communication on the basis of safety-II concept

Kitamura, Masaharu*; Oba, Kyoko; Yoshizawa, Atsufumi*

no journal, , 

A new framework of information provision and public dialogue concerning safety of nuclear facilities has been proposed in this paper. Basic ideas behind the framework are a novel concept of safety named Safety-II and a relevant emerging methodology of safety management called Resilience Engineering. The new ideas emphasize practices that contributed to positive outcomes in addition to failures and errors experienced during accident management. Implication of the new framework concerning the nuclear risk communication has been addressed through reflection of several field experiences.

Oral presentation

Oral presentation

Enhancement of safety by incorporating aspects of Safety-II, 1; Evaluation of effects based on defense in depth and necessity of safety

Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*

no journal, , 

no abstracts in English

Oral presentation

39 (Records 1-20 displayed on this page)