Oxygen-Enriched Atmosphere 5 : (OEA) An atmosphere in which the concentration of oxygen exceeds 21 percent by volume or the partial pressure of the oxygen exceeds 160 torr
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}