Nitrogen Services - Nitrogen Helium Leak Testing
Nitrogen services include drying, purging, blanketing, pressure testing, etc. Nitrogen Helium Leak Test is the final test, used to prove the integrity of all flanged and threaded joints and connections of piping and equipment systems. The leak test is designed to demonstrate that process and utility piping systems are properly prepared to operate at specified pressures.
Helium is one of the smallest gas molecules and is inert. Being inert it is relatively safe to use (rather than hydrogen) and will not react with any of the materials within the part to be tested. In most helium leak testing applications, one uses a mass spectrometer tuned to detect helium although it is possible to use a residual gas analyser. Helium leak testing can be generally be between one thousand and one million times more sensitive than using pressure decay techniques.