File:Fse-backdraft-v1.svg

Fse-backdraft-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Backdraft follows accumulation and a ventilation change. Based on Van Rossum (2027), §4.9 and U.S. Nuclear Regulatory Commission (2005), p. F-7.

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

Source basis: Van Rossum (2027), §4.9; U.S. Nuclear Regulatory Commission (2005), p. F-7 and pp. 15-3–15-4
Alt text: Oxygen-limited room accumulates fuel gas, a door opens and mixed gases ignite explosively.

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	Date/Time	Dimensions	User	Comment
current	15:51, 2 November 2026	900 × 600 (8 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	08:54, 2 November 2026	900 × 600 (8 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	08:16, 2 November 2026	900 × 600 (5 KB)	Sanne (talk \| contribs)	Upload fse-backdraft-v1.svg: diagram for Backdraft (level-1 visual plan V1)

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Short title	Oxygen-limited room accumulates fuel gas, a door opens and mixed gases ignite explosively.
Image title	Three room cross-sections in sequence. 1, closed: a small oxygen-starved fire under a deep layer of fuel-rich gas, door closed, limited oxygen. 2, opened: the door opens, fresh air flows in along the floor while hot gas leaves at the top of the opening. 3, ignited: the air-fuel mixture ignites, flame travels through the gas layer and a fireball is expelled through the opening.
Width	900
Height	600