A Study on the Evaluation of Internal Leak in Valve for Nuclear Power Plant Using Acoustic Emission Method

음향방출법에 의한 원자력발전소 밸브내부 누설평가에 관한 연구

The objective this study is to estimate the feasibility of acoustic emission method for the internal leak from the valves in nuclear power plants. From the experimental results, it was suggested that the acoustic emission method for monitoring of leak was feasible. When the background levels are higher than the acoustic signals from leak, we can detect the leak analyzing the spectrum of the remainders which take the background noise from the acoustic signals.