Leak detection requires a combination of skilled operators and state-of-the-art equipment to locate a hidden leak. With our array of equipment, methods and techniques, we are able to locate almost any leak across all industries – from large Municipal and industrial to commercial.
3 methods for leak detection:
- A leak in a pipe under pressure creates noise that travels along the pipe, its contents, and through the surrounding ground.
- Two highly sensitive microphones are attached to the leaking pipe.
- The sound from the leak takes longer to travel to the microphone furthest from the leak.
- The correlator uses the “time delay” to pinpoint exactly where the leak is situated.
- After correlation the indicated position should be checked by top sounding using an acoustic listening device.
- When a pressurised pipeline leak, the water literally gushes/pushes out of the crack / damaged pipe into the surrounding ground.
- The pipe material vibrates at the leakage point.
- These vibrations are transmitted by the pipe and can even be noticed at distant contact points, e.g. Fittings.
- This is known as structure-borne sound and is made audible by an acoustic listening device.
3. Tracer Gas
- A tracer gas consisting of a mixture of hydrogen and nitrogen is introduced into the water pipe with the suspected leak.
- The tracer gas containing hydrogen (which is the smallest and lightest molecule in the atmosphere) will exit at the leak point and make its way to the surface where it is detected by the highly sensitive gas detector.