| Tsukasa Ikegami | Preventive Maintenance Engineering Sect., Nuclear Plant Service Engineering Dept., Nuclear Systems Div., Power & Industrial Systems, |
| Takao Shimura | Reactor Internal Maintenance Engineering Sect., Nuclear Plant Service Engineering Dept., Nuclear Systems Div., Power & Industrial Systems, |
| Masahiro Koike | Reactor Preventive Maintenance Gr., Power & Industrial Systems R&D Lab., Power & Industrial Systems, |
In Japan, nuclear power provides one-third of the electric power used by the country and is consequently an important source of energy. To achieve efficient business operations in the electric power industry, the cost efficiency of nuclear power must therefore be improved. In addition, to ensure a steady supply of energy at a time when plans for constructing nuclear power plants are being postponed, plants that are currently operating must be able to continue stable operations over the long term. For these reasons, the Ministry of Economy, Trade and Industry, utility companies, scientists and engineers from academia and industry, and manufacturers are combining forces to develop technologies to deal with age-related degradation in nuclear power plants. Hitachi, Ltd. has been constructing nuclear power plants and maintaining operating plants for many years, and is applying the know-how accumulated through these experiences to the development of new technologies to make currently operating plants capable of operating over the long term in a stable and highly reliable manner. In this report, we survey inspection technologies, preventive maintenance, and repair/replacement technologies developed by Hitachi.
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The Hitachi Hyoron (Japanese Only) |
Plant life management, WJP(Water Jet Peening), RVR(Reactor Pressure Vessel Replacement), Ultrasonic Holography, Chemical-Decontamination method
