Editing Backdraft (section)

==Backdrafts and flashovers==
ISO 13943<ref name="iso_13943">{{cite web|url=https://www.scribd.com/doc/55529535/ISO-FDIS-13943-Vocabulary|title=ISO FDIS 13943 Vocabulary|publisher=International Organization for Standardization|access-date=2011-06-11|archive-date=2012-11-08|archive-url=https://web.archive.org/web/20121108092218/http://www.scribd.com/doc/55529535/ISO-FDIS-13943-Vocabulary|url-status=live}}</ref> broadly defines flashover as a "transition to a state of total surface involvement in a fire of combustible materials within an enclosure." This definition embraces several different scenarios and includes backdrafts, but there is considerable disagreement about categorizing backdrafts as flashovers.<ref name="firetactics_01">{{cite web|url=http://www.firetactics.com/RAPID%20FIRE%20PROGRESS.pdf|title=Rapid Fire Progress|publisher=firetactics.com|access-date=2011-06-11|archive-url=https://web.archive.org/web/20110723154624/http://www.firetactics.com/RAPID%20FIRE%20PROGRESS.pdf|archive-date=2011-07-23|url-status=dead}}</ref> In common usage, the term flashover describes the near-simultaneous ignition of material caused by heat attaining the [[autoignition temperature]] of the combustible material and gases in an enclosure. Flashovers according to this narrower definition, i.e. those caused by rising temperatures, would not be considered backdrafts since backdrafts are caused by the introduction of oxygen into an enclosed space with conditions already suitable for ignition, and are thus caused by chemical change.<ref name="vdunn_01">{{cite web|url=http://vincentdunn.com/dunn/newsletters/dec/dec.pdf|title=Backdraft and flashover; what's the difference?|author=((Dunn, Vincent, Deputy Chief, F. D. N. Y. (Ret.)))|publisher=vincentdunn.com|access-date=2011-06-11}}</ref>