The Evaluation of Internal Leak in Valve for Power Plant Using Acoustic Emission Method

음향방출법에 의한 발전용 밸브 누설평가

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.