THE FlRST ATOMlC POWER INDUSTRY GROUP
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Cover Design：Kim, Min-Gun
Tetsuo Shibata, Tsuyoshi Sakamaki, Kaoru Masui, Hisashi Satou, Akira
Inoue, Takayuki Sudou
Fuji Electric has designed and produced monitoring system for personal exposure dose of workers to enter the radiation controlled area in nuclear plants and nuclear facilities. We offer the Access Control System as control system for external exposure dose of workers to enter the radiation controlled area. Now we introduce the details that we have developed and improved the Electric Personal Dosimeter for exposure dose and have developed the Access Control System under a revision to JIS including IEC standards.
KEYWORDS：dosimeter, the access control system
Chiaki Tomizuka, Yutaka Takeuchi, Keisuke Jinza, Hiroshi Takahashi
In a Nuclear facility, the maintenance and repair activities must be done remotely in a radioactive environment. Fuji Electric Systems Corporation has developed a remote handling system based on 3-D recognition technique. The system recognizes the pose and position of the target to manipulate, and visualizes the scene with the target in 3-D, enabling an operator to handle it easily. This paper introduces development of prototype and system improvement.
KEYWORDS：remote handling system, 3-D recognition technique
Koichi Iimura, Taichi Sakamoto, Masaru Kanno, Naohiko Hori
At Oarai Research and Development Center, Japan Atomic Energy Agency
（JAEA） advances the plan of refurbishing Japan Materials Testing Reactor（JMTR）to
start the operation in fiscal 2011.
KEYWORDS：JMTR（Japan Materials Testing Reactor）, 99 molybdenum, 99m technetium, radiopharmaceutical, irradiation facility
Tatsuaki Nakamura, Junichi Hasunuma, Shintaro Suzuki
Hokuriku Electric Power Company has been operating the Shika Nuclear Power Station that it constructed in Shika city, Ishikawa prefecture, for over 15 years since bringing Unit 1 of this plant online in July 1993. In addition to electricity generation, maintenance and inspection tasks constitute a big part of operating a large-scale nuclear power plant, and in recent years, problems at power stations in the nuclear power industry have led to several revisions of nationally regulated maintenance and inspection systems. This paper describes the background, objectives, development method, and features of the Maintenance Management System and Maintenance History Management System that make effective use of information technology to promote safer and more efficient maintenance work at large-scale nuclear power plants.
KEYWORDS：shika nuclear power station, maintenance management system, maintenance history management system, hokuriku electric power company.
Kyotada Nakamura,Takashi Shimakawa, Kobayashi Ken-ichi
High temperature components are operated under cyclic thermal transient. In the design of these components, creep-fatigue is the most dominant failure mode. To evaluate creep-fatigue damage, methodology to estimate inelastic strain concentration should be presented in a design standard. This paper presents new technique to estimate inelastic strain behavior based on Stress Redistribution Locus (SRL) method. An applicability of SRL concept is discussed with a help of FEM results for representative components of pressure vessel under various analytical conditions. It is confirmed that SRL does not depend on constitutive equations, thermal load range or plasticity/creep under monotonic loading condition. Including some differences under cyclic loading condition or other, whole results is conservatively represented by proposed design SRL curve.
KEYWORDS：high temperature design, pressure vessel, creep-fatigue, inelastic strain concentration, simplified method, stress redistribution locus