File:Fse-flashover-v3.svg

Fse-flashover-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 7 KB)

Summary

Post-flashover combustion can occur inside and outside the room. Based on Van Rossum (2027), §4.11 and Drysdale (2002), p. 1-95.

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

Source basis: Van Rossum (2027), §4.8 and §4.11; Drysdale (2002), p. 1-95
Alt text: Pyrolysis gases leave a hot room and burn outside after mixing with fresh air.

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

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	Date/Time	Dimensions	User	Comment
current	15:52, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	08:56, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	08:17, 2 November 2026	900 × 600 (5 KB)	Sanne (talk \| contribs)	Upload fse-flashover-v3.svg: diagram for Flashover (level-1 visual plan V3)

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Short title	Pyrolysis gases leave a hot room and burn outside after mixing with fresh air.
Image title	Cross-section of a hot, smoke-filled room after flashover. Burning fuel items release abundant pyrolysis gases; part burns inside the room as internal combustion. A limited air inflow enters at the bottom of the window. Unburnt gases leave through the top of the window, mix with fresh air outside and burn as external flaming along the facade, radiating heat towards a neighbouring building. A note says part of the fuel's energy is released outside the room.
Width	900
Height	600