原子力プラントにおける保全計画の最適化手法の構築
Development of an evaluation method for optimization of maintenance strategy in commercial plant
著者:
伊藤 悟 Satoshi ITO 白石 夏樹 Natsuki SHIRAISHI 結城 和久 Kazuhisa YUKI 橋爪 秀利 Hidetoshi HASHIZUME
発刊日:
公開日:
Cost of ElectricityDecision-Making MethodMaintenance StrategyUnavailability
概要
In this study, a new simulation method is developed for optimization of maintenance strategy in NPP as a multiple-objective optimization problem (MOP). The result of operation is evaluated as the average of the following three measures in 3 000trials: Cost of Electricity (COE) as economic risk, Frequency of unplanned shutdown as plant reliability, and Unavailability of Regular Service System (RSS) and Engineering Safety Features (ESF) as safety measures. The following maintena nce parameters are considered to evaluate several risk in plant operation by changing maintenance strategy : planned outage cycle, surveillance cycle, major inspection cycle, and surveillance cycle depending on the value of Fussel-Vesely im portance measure. By using the Decision-Making method based on AHP, there are individual tendencies depending on individual decision-maker. Therefore this study could be useful for resolving the problem of maintenance optimization as a MOP.
