Advanced Leak Detection Using Tracer Gas
In this particular investigation, the client reported a suspected leak within their property’s plumbing system. Traditional methods had failed to pinpoint the source, and visible signs such as damp patches or water pooling were either absent or inconclusive. To address the issue with precision, I employed tracer gas leak detection — a highly sensitive and non-invasive technique ideally suited for such scenarios.
The first step in the process involved isolating and draining the section of pipework believed to be leaking. This is an essential preliminary measure to ensure the tracer gas can be introduced and monitored without interference from residual water pressure or flow. Once the system was prepared, I introduced a specially formulated, non-toxic tracer gas mixture — typically composed of hydrogen and nitrogen — into the pipework under controlled pressure.
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​Using advanced detection equipment, I began scanning the suspected areas. My tracer gas kit is capable of identifying gas concentrations as low as 1 part per million (ppm), which enables me to detect even the most minuscule leaks. As the gas is lighter than air, it escapes through the tiniest of cracks or perforations in the pipework and rises to the surface, where it is picked up by the sensitive sensor probe.
In this case, the leak was eventually located beneath a tiled bathroom floor — a notoriously difficult area to investigate using traditional leak detection methods. Thanks to the accuracy of tracer gas technology, I was able to pinpoint the exact location of the leak without the need for unnecessary damage to surrounding structures. The client was then able to proceed with targeted repairs, saving both time and money.
This method is effective across a wide range of pipework systems, including domestic cold and hot water pipes, central heating systems, and even underground water mains. It is particularly useful in modern homes where pipework is often concealed behind walls, under floors, or within concrete screeds.
Outcome:
The tracer gas detection technique successfully located the leak with minimal disruption to the property. The repair was carried out swiftly, and water service was fully restored without the need for extensive excavation or structural damage.
