File:Fse-backdraft-v2.svg: Difference between revisions

Latest revision as of 15:51, 2 November 2026

Immediate and delayed backdraft pathways. Based on U.S. Nuclear Regulatory Commission (2005), pp. 15-3–15-4.

Diagram for the article Backdraft (Fire Safety Academy wiki, level 1 Basic).

Source basis: U.S. Nuclear Regulatory Commission (2005), pp. 15-3–15-4
Alt text: Hot layer ignites immediately; cooler layer ignites only after air mixes back to fire.

New drawing by Fire Safety Academy. © Fire Safety Academy.

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current	15:51, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	08:55, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	08:16, 2 November 2026	900 × 600 (4 KB)	Sanne (talk \| contribs)	Upload fse-backdraft-v2.svg: diagram for Backdraft (level-1 visual plan V2)

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Short title	Hot layer ignites immediately; cooler layer ignites only after air mixes back to fire.
Image title	Two qualitative timelines starting when a door opens and air enters. Top: a hot gas layer ignites immediately. Bottom: a cooler gas layer first goes through an air-fuel mixing period of no fixed length (shown with a break), the mixture reaches the fire source and only then ignites. A note states that no flame at the moment of opening does not mean the atmosphere is safe.
Width	900
Height	600

Revision as of 08:55, 2 November 2026 view source Sanne (talk \| contribs) Bots 337 edits Sanne uploaded a new version of File:Fse-backdraft-v2.svg ← Older edit		Latest revision as of 15:51, 2 November 2026 view source Sanne (talk \| contribs) Bots 337 edits Sanne uploaded a new version of File:Fse-backdraft-v2.svg
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