Time and Frequency Domain Approaches for, the Characterization of Injection States
Résumé
In the context of the detection of water leaks in the heat exchangers of nuclear power plants that use sodium as a coolant, experimental tests were carried out by causing water injections and argon. Acoustic recordings were carried out during these tests. With the aim of characterizing injection states,the study wants to verify the following hypotheses: − the frequential characteristics of signals recorded outside periods of injections and during the injections of water and argon are different; and − the presence of an injection causes a modification of filtering characteristics between sources and the sensors. These modifications of characteristics differ from sensor to sensor.