File:Fse-fractional-effective-concentration-v1.svg

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Fse-fractional-effective-concentration-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 10 KB)

Summary

Smoke fraction (FEC) and total irritant fraction (FIC) during the first four minutes of an armchair fire, compared with the limits of 0.3 and 1. Based on Purser (2002), pp. 2-132–2-133.

Original illustration for Fractional effective concentration, level 4 Expert.

Source basis: Purser (2002), p. 2-132 (Table 2-6.21, values per minute) and p. 2-133 (limits 1 and 0.3). New chart from the table values; do not copy Figure 2-6.30.
Alt text: Line chart: smoke and irritant fractions rise over four minutes and cross the limit of 1 in the second and third minutes.

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:17, 2 November 2026		900 × 600 (10 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Fractional effective concentration

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Short title	Smoke fraction (FEC) and total irritant fraction (FIC) during the first four minutes of an armchair fire, compared with the limits of 0.3 and 1. Based on Purser (2002), pp. 2-132–2-133.
Image title	Line chart: smoke and irritant fractions rise over four minutes and cross the limit of 1 in the second and third minutes. Source basis: Purser (2002), p. 2-132 (Table 2-6.21, values per minute) and p. 2-133 (limits 1 and 0.3). New chart from the table values; do not copy Figure 2-6.30.
Width	900
Height	600