We developed a proprietary process that uses carbon-based gases (CO, CO2, Methane) as a tracer gas in Nitrogen that is non-flammable and is imaged with infrared.
Previous to 2009, the only leak detection methodology that was widely accepted was to purge and pressure with a helium mixture and sample every connection in the facility. Although helium leak detection has been the gold standard for decades it is not immune to problems.
The cost of helium has become prohibitive. Helium/Nitrogen is an invisible gas mixture and can not be imaged. Taping and sampling connections is time-consuming and labour intensive.