Development of a Fatigue Monitoring System for Major components of Korean NPP

Korea Electric Power Research Institute, KEPRI, launched into development of a fatigue monitoring system for major components and piping in Korean nuclear power plants. The development get realized covering a three-phase project, so to speak, research for developing key technologies, development of a trial program appropriated to the continued operation's purpose, and application of the program to all NPPs. This paper deals with the framework, key-functional modules and methodologies of a fatigue monitoring model delivered as results of the research for developing key technologies