At Plan B Plumbing Solutions there's not yet been a leak we can't find. (Try saying that fast 10 times) !!

With our state of the art leak detection equipment we have everything required to locate even the smallest of leaks. We like to think of ourselves as the CSI of Water Leak Detection in Melbourne !!

How do we find these water leaks you ask? Read on ....

Acoustic Water Leak Detection

The A 100 is used in combination with various microphones for the electro-acoustic detection of water-leaks.

When a pressurised pipeline develops a leak, water flows through it into the surrounding soil at high speed.

The pipeline material vibrates at the exit point. This vibration is transmitted by the pipe, with the result that it can be picked up even at remote contact points (valves and the like). This structure borne noise is rendered audible by the A 100.

The water jet and the pipe, in the vicinity of the leak - also induce vibration in the soil. This is transmitted to the surface, where it can be picked up as ground-borne noise.

Acoustic Pipeline Location

Plastic lines cannot be located by the classical electromagnetic method because they do not conduct electricity.

The acoustic method of pipeline location uses a different principle: the lines transmit mechanical vibration better than the surround- ing earth. If suitable vibrations are applied to the line, they are transmitted along its length and through the earth to its surface, and can then be located there with an ground microphone and receiver with headsets according to the water leak detection principle. As with water leak detection, the line is in the place where the greatest intensity is found. Fibrous-cement and metallic pipes can also be located in this way.

Thermal Imaging to Detect Water Leaks

A thermal imaging camera is ultra-sensitive. Even the minutest changes in infrared radiation from various objects are easily detected.

What you can’t see with your naked eye is quickly recorded by the device as a thermal image.

This device can quantify thermal image allowing us to quickly identify the exact location of moisture or leaks.


This device was developed especially for leak detection on underground pipes by using tracer gas.

Using tracer gas is a tried and tested method of pinpointing leaks. It can be used in gas and water distribution networks, pipelines in buildings, heating systems, pressurized communication cables, gas-filled high voltage power lines and landfill sites sealed with double membrane layers. It can also be used to test for leaks in industrial products such as pipes, pumps, engine blocks and airfoils.

Detecting gas leaks by tracer gas involves feeding a mixture of 95% nitrogen (carrier gas) and 5% hydrogen into the pipelines or other equipment/products being tested. The hydrogen escapes through the leak and is detected by the highly sensitive, specialisedsensor.

The low amount of hydrogen (just 5%) means that this method is safe: the gas is incombustible as per ISO 10156 thanks to the use of nitrogen as the carrier gas. It is non-toxic and therefore also permitted for use in drinking water networks, as well as non-corrosive.

Tracer gas is environmentally-neutral and permeates all cover layers such as asphalt, concrete and other seal coats. Tracer gas always looks for the shortest route from the leak to the surface.

The extraordinarily low cross sensitivity of the gas-sensitive semiconductor (SC) with regard to moisture and methane ensures an absolutely sure result and a resolution down to 0.1 parts per million (ppm) H2.

Thanks to an innovative operating concept this new device allows us to get fast and reliable results.

Plan B Plumbing Solutions, the Leak Detection Specialists in Melbourne.