Development of the details of wall thinning management process using prediction tools

Abstract

In order to properly identify the pipe wall thinning in power plants, electric utilities have implemented management based on the pipe wall thinning management codes published by the Japan Society of Mechanical Engineers (JSME). However, there are some management issues, such as the inability to accurately evaluate the wall thinning rate in areas that are difficult to measure, so the introduction of wall thinning management using a wall thinning prediction method is positioned in the roadmap for the revision of the JSME codes. This paper summarized the advantages of using the prediction method, and proposed a concrete process for the management of the wall thinning using the prediction method. Furthermore, the timing of the measurement based on the prediction was evaluated based on the proposed wall thinning management process.