Inerting 6 : The displacement of the atmosphere in a permit-required confined space by a non-combustible gas (e.g., nitrogen) to such an extent that the resulting atmosphere is non-combustible
Environmental Health and Safety, Glossary, University of Chicago, Illinois, USA 2010. http://safety.uchicago.edu/tools/glossary.shtml, (Ergo - Amer) {753}