A new risN monitor system has been under development which can be applied not only to prevent severe accident in daily operation but also to serve to mitigate radiological hazard just after severe accident happens. The system is composed by plant DiD (Defence-in Depth) risN monitor and reliability monitor. The plant DiD risN monitor can describe versatile scenarios of human-machine interaction in accident situation by utilizing UML (Unified Modeling Language) so as to serve as a useful tool of accident m...
英字タイトル:
A prospective review on multi-purpose application of plant DiD risN monitor

1．はじめに最近の経済状況低迷による電力需要の伸びの停滞、電力自由化や原子力の社会受容性の低下が相俟って、原子力発電を取り巻く状況は厳しくなっている。とくに1999年９月30日に発生のJCO事故、さらには１昨年のいわゆる東電不祥事問題などで、ここ数年原子力の安全性への社会の目は厳しくなり、原子力規制では原子力防災体制を強化するとともに、一連の原子力発電所の保守管理への規制強化が行われている。とくにJCO事故後、全国の原子力施設立地地域にあまねくオ フサイトセンターが設けられ防災専門官が常駐するようになった......
英字タイトル:
The human factors of maintenance nuclear plants

1. はじめに近年、電力自由化に伴って、原子力発電に伴うコス ト削減が強く要求されるようになってきた。それに加 えて熟練作業員の減少が進んでいることや、さらには 後継者に保守作業の技術伝承を行っていくことの難し さも問題となっている。その一方で、発電設備自体の 高経年化や CBM(Condition Based Maintenance)の導入に よって、ますます保守作業のありかたは複雑になって きており、保守作業支援の高度化が望まれている。そこで、拡張現実感技術を利用して保守作業を支援 するシステムを利用......
英字タイトル:
Development of Tracking Method for Augmented Reality System for Plant Maintenance Support

A framework for solving human factors of artificial systems is proposed in this study, where a whole system of machines and the human organization that involves in the operation and management of machines is defined as an "artificial system". Five aspects of human factors in the artificial system are first discussed, and the types of artificial system with respect to the human factors are divided into three levels from a viewpoint of complexity. A framework that can treat artificial systems by unified...
英字タイトル:
Proposal of a framework for solving human factors of artificial systems and its application to maintenance work

Basic knowledge on human error in human-machine system is first explained from three different views of human error in psychology: behavioristic, cognitive and organizational psychologies. And then, two different countermeasures are discussed for the prevention and mitigation of human error in the human-machine system. One is the improvement of human-machine interface for coping with cognitive error, while the other, enhancement of safety culture in the organization for preventing workers from violating soc...

This study aims at developing an augmented reality system to support maintenance work of nuclear power plants. An accurate and wide-range tracking method is required as a key technology in order to realize the system. In this study, a new tracking method using multi-camera a nd gyro sensor has been developed in order to enlarge the area where the tracking is available with limited number of markers. Experimenta l evaluation result shows that the area where the developed method can cover is about 3 times l...
英字タイトル:
Development and Evaluation of Tracking Method for Augmented Reality System forNuclear Power Plant Maintenance Support

This study aims at developing an augmented reality system to support maintenance work of nuclear power plants. An accurate and wide-range tracking method is required as a key technology in order to realize the system. In this study, a new tracking method using multi-camera and gyro sensor has been developed in order to enlarge the area where the tracking is available with limited number of markers. Experimental evaluation result shows that the area where the developed method can cover is about 3 time...
英字タイトル:
Development and Evaluation of Tracking Method for Augmented Reality System for Nuclear Power Plant Maintenance Support

Abstract Aiming at improvement of task performance and reduction of human error of water system isolation task in NPP periodic maintenance, a support system using state-of-art information technology, Augmented Reality (AR) and Radio Frequency Identificat ion (RFID) has been proposed under the concept of off-site operation and maintenance support center, and a prototype system has been developed. The system has navigation function of which an indication is superimposed directly on the user's view to help to...
英字タイトル:
A Support System for Water System Isolation Task of Nuclear Power Plant by using Augmented Reality and RFID

Aiming at improvement of task performance and reduction of human error of water system isolation task in NPP periodic maintenance, a support system using state-of-art information technology, Augmented Reality (AR) and Radio Frequency Identification （RFID）has been proposed under the concept of off-site operation and maintenance support center, and a prototype system has been developed. The system has navigation function of which an indication is superimposed directly on the user's view to help to find ...
英字タイトル:
A Support System for Water System Isolation Task of Nuclear Power Plant by using Augmented Reality and RFID

１． はじめに第１回目では現代の産業リスクの定義と意味について述べた．今回はそのリスクをアセスメントする上での現代の産業システムの特徴について，歴史と実例を交えて解説する．２．現代における大規模・複雑システム－人間と機械の共存　ナノテクノロジーのような極小の技術が進歩する一方で，航空機，発電システム，交通システム果ては社会システムまで，大規模化，複雑化している．大規模・複雑システムの特徴は，人間と機械が協調して目標を達成するシステムであり，例えば小さな人間のエラーや，機器の軽微な故障が進展して大きな災害に......