per offers its Customers many different “non destructive” leak search methodologies.
It is a minimally invasive diagnosis based on a scientific methodology that gives objective and repeatable results. An inert gas – which always comes out perpendicular to the breaking point – is blown through flanges applied to the waterproofing system or to the pipe. The leak is found by gas detectors that work even through the ground or through the pores of covering materials.
Gas tracing is used to test and search for leaks on waterproof coverings (sheaths, terraces and flat roofs) and for water leak search in water and heating systems.
Leak search in heating system is generally carried out through the IR system.
Any substance or body with a temperature higher than absolute zero emit heat. Even objects with a very low temperature do. An IR camera can detect the IR energy of an element from distance. Heat detected can be precisely quantified, allowing an accurate identification and evaluation of heat-related problems.
A thermographic camera is also used in building diagnosis to evaluate the insulation system, to detect heat leaks, condensed steam and humidity spots. It can be used in structure and covering diagnosis as well.
An acoustic method can be used if there are no strong background sounds to alter acoustic reception. It works through a microphone that is put in contact with the spot to examine. The noise recorded by the microphone is filtered and amplified. The resulting signal is displayed with a digital intensity indicator and listened through a headset.
This technique allows the elimination of many sound interferences that affect the effectiveness of the acoustic technique, and it is generally used outdoors. Once the piping has been identified, two sensors are placed in contact with it. The noise generated from the leak of pressured fluids is captured by the sensors and sent through a software that elaborates the distance of the breaking point from the sensors.
The endoscopic method or “video inspection” is generally used to detect leaks in exhaust systems. This technique allows to see inside the pipes, and to detect obstructions, bursts or other anomalies. Video inspections show these faults through a camera that sends live images to a display.
This procedure makes it possible to record the images on a magnetic support, controlling ruptures, lengths, inclinations, abusive connections, piping structure etc.