Standard Practice for Leak Detection and Location Using Surface-Mounted Acoustic Emission Sensors

Importancia y uso:

4.1 Leakage of gas or liquid from a pressurized system, whether through a crack, orifice, seal break, or other opening, may involve turbulent or cavitational flow, which generates acoustic energy in both the external atmosphere and the system pressure boundary. Acoustic energy transmitted through the pressure boundary can be detected at a distance by using a suitable acoustic emission sensor.

4.2 With proper selection of frequency passband, sensitivity to leak signals can be maximized by eliminating background noise. At low frequencies, generally below 100 kHz, it is possible for a leak to excite mechanical resonances within the structure that may enhance the acoustic signals used to detect leakage.

4.3 This practice is not intended to provide a quantitative measure of leak rates.

Subcomité:

E07.04

Referida por:

E2533-21

Volúmen:

03.03

Número ICS:

17.140.01 (Acoustic measurements and noise abatement in general)

Palabras clave:

acoustic emission leak detection; continuous monitoring; hydrotest; leak detection; nondestructive testing; piping systems; pressure vessels ;