Leak testing or performing a leak test is a form of non-destructive quality control in a production process. During a leak test, a single component or assembly is tested to determine if it falls within a specified leak limit.
Leak testing can be achieved using various detection methods, all depending on the required specification or product requirements. There is a global consciousness of the importance of the environment and a concerted effort to reduce our impact on future generations. As a result, this has led to many manufactured products needing to meet more stringent specifications and international standards. For example, the escape of hazardous gasses or liquids from a system or containers.
To meet the more stringent specifications, or to just speed up the leak test cycle itself to meet production demands, many industries have now implemented testing methods using helium as the tracer gas. However, when all's said and done this means that for every cycle, there is an accompanying helium usage cost! Although it will require an initial investment, in the long run, integrating a helium recovery system into the leak test process can reduce costs. Especially with how volatile the helium supply market has been over the past years.