Development of maintenance technology for rotation equipments in the Tokai Reprocessing Plant I?Failure analysis for configuration parts of rotating equipment-
堂村 和幸 Kazuyuki DOUMURA 大久保 俊純 Tosizumi OHKUBO 伊波 慎一 Shinichi INAMI
Blower Failure ratio distribution MTBF MTTF Reliability
Many rotating equipments, such as blowers and pumps, are installed in the Tokai Reprocessing Plant. Blowers are important to keep containment ability of nuclear materials in the plant. This work focuses on the function of the blowers as an object of the evaluation. MTTF(Mean Time To Failure) and failure ratio distribution of the configuration parts in the blower were obtained from the maintenance data based on 30-year experiences. The reliability of every parts in the blower was evaluated by calculating MTBF(Mean Time Before Failure), which is based on the results of MTTF and failure ratio distribution. As a result of these analyses, the blowers have sufficient degree of reliability , and our maintenance system to prevent failures has been performed adequately.