File:Fse-smouldering-to-flaming-transition-v1.svg

Fse-smouldering-to-flaming-transition-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Schematic heat release rate of a fire that starts by smouldering. It either stays below about 5 kW and dies out, or turns to flaming, after which the growth phase begins. Based on National Research Council of Canada et al. (2005), p. 1.2-29, and Australian Building Codes Board (2020a), Data Sheet B1, p. 9.

Original illustration for Smouldering-to-flaming transition, level 4 Expert.

Source basis: National Research Council of Canada et al. (2005), p. 1.2-29 (smouldering fire may or may not develop into flaming; schematic smouldering design fire, max HRR typically below 5 kW; Figure 1.2.11.3a, redraw, do not copy); Australian Building Codes Board (2020a), Data Sheet B1, pp. 8–9 (incipient smouldering stage, Figure 1 design fire stages, redraw, do not copy); Ministry of Business, Innovation and Employment (2013), p. 53 (growth phase starts when flame radiation governs the burning rate)
Alt text: Heat release rate against time: a long low smouldering plateau that either decays or jumps at the transition to a steeply growing flaming curve.

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:12, 2 November 2026		900 × 600 (8 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Smouldering-to-flaming transition

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Short title	Schematic heat release rate of a fire that starts by smouldering. It either stays below about 5 kW and dies out, or turns to flaming, after which the growth phase begins. Based on National Research Council of Canada et al. (2005), p. 1.2-29, and Australian Building Codes Board (2020a), Data Sheet B1, p. 9.
Image title	Heat release rate against time: a long low smouldering plateau that either decays or jumps at the transition to a steeply growing flaming curve. Source basis: National Research Council of Canada et al. (2005), p. 1.2-29 (smouldering fire may or may not develop into flaming; schematic smouldering design fire, max HRR typically below 5 kW; Figure 1.2.11.3a, redraw, do not copy); Australian Building Codes Board (2020a), Data Sheet B1, pp. 8–9 (incipient smouldering stage, Figure 1 design fire stages, redraw, do not copy); Ministry of Business, Innovation and Employment (2013), p. 53 (growth phase starts when flame radiation governs the burning rate)
Width	900
Height	600