File:Fse-sprinkler-skipping-v1.svg

Fse-sprinkler-skipping-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 9 KB)

Summary

How skipping arises: small droplets from the first operating sprinkler are carried up by the plume and along the ceiling jet, where they strike and cool the link of the next sprinkler. Based on Cooper (2002b), p. 3-239, and Iqbal and Salley (2004), p. 10-11.

Original illustration for Sprinkler skipping, level 4 Expert.

Source basis: Cooper (2002b), p. 3-239 (droplets of slow initial speed accelerated by and convected with the plume; ceiling jet carries droplets past downstream heads; droplets striking link or bulb cause evaporative cooling and delay); Iqbal and Salley (2004), p. 10-11 (too-small droplets evaporate or are moved upward by the plume); Iqbal and Salley (2004), p. 10-9 (plume strikes the ceiling and forms the ceiling jet)
Alt text: Cross-section of a room: a fire plume rises under an operating sprinkler; the ceiling jet carries droplets to a second sprinkler that stays closed.

Licensing

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:31, 2 November 2026		900 × 600 (9 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Sprinkler skipping

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Short title	How skipping arises: small droplets from the first operating sprinkler are carried up by the plume and along the ceiling jet, where they strike and cool the link of the next sprinkler. Based on Cooper (2002b), p. 3-239, and Iqbal and Salley (2004), p. 10-11.
Image title	Cross-section of a room: a fire plume rises under an operating sprinkler; the ceiling jet carries droplets to a second sprinkler that stays closed. Source basis: Cooper (2002b), p. 3-239 (droplets of slow initial speed accelerated by and convected with the plume; ceiling jet carries droplets past downstream heads; droplets striking link or bulb cause evaporative cooling and delay); Iqbal and Salley (2004), p. 10-11 (too-small droplets evaporate or are moved upward by the plume); Iqbal and Salley (2004), p. 10-9 (plume strikes the ceiling and forms the ceiling jet)
Width	900
Height	600