Pipe wall thinning management is one of important items to keep safe nuclear power plant operation. In pipe wall thinning management, accurate understanding of wall thinning behavior is required, because pipe replacement period is evaluated by the result of pipe wall thickness measurement. In recently, not only current method “UT” and “RT” but also new nondestructive tests are being developed by many institutes. More advanced management will be achieved by these new monitoring systems. In this paper, ...
英字タイトル:
Expectancy for Developed Pipe Wall Thickness Measurement Method in Pipe Wall Thinning Management of Nuclear Power Plant

Abstract The electromagnetic acoustic resonance (EMAR) method provides accurate and stable evaluation and its capability has been demonstrated through online monitoring using a large-scale corrosion test loop in oper ation at high temperature. This study applies EMAR with the signal processing method of the superposition of n'“ compression to the thickness evaluation of piping in a nuclear power plant during shutdown. Sections of piping evaluated by EMAR include those having long-term service, where thinni...
英字タイトル:
Implementation applicability of piping inspection using electromagneticacoustic resonance