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Re: igniting petrol vapour with a cigarette
Posted by: PMK140 (IP Logged)
Date: May 23, 2009 06:34AM

NFPA 921-2008
Table 5.7.1.1 Reported Burning and Sparking Temperatures
of Selected Ignition Sources

Embers*
Cigarette (puffing) 830–910 1520–1670
Cigarette (free burn) 500–700 930–1300

*From Krasny, J. (1987) Cigarette Ignition of Soft Furnishings —A Literature
Review with Commentary, NBSIR 87-3509; National Bureau of Standards,
Gaithersburg MD.


18.3.6.2** While a review of surface and autoignition temperatures
may suggest that cigarettes are a competent ignition source
for ignitible liquids and gases, in reality, cigarettes make poor
ignition sources for most ignitible liquids and gases. There are
many coupled factors that have been proposed as responsible for
the lack of ignition for most ignitible liquids and gases, including
flammability limits (oxygen-depleted conditions at cigarette tip),
surface temperature, residence time and ignition delay, burning
velocity, minimum ignition energy, quenching distance, and insulating
effect of cigarette ash.

**A.18.3.6.2 For more information, see the following:
Holleyhead, R. “Ignition of Flammable Gases and Liquids
by Cigarettes: A Review,” Science and Justice, 36, 4, 1996.
Babrauskas, V., Ignition Handbook, Fire Science Publishers /
Society of Fire Protection Engineers, Issaquah, WA, 2003.

Pat Kennedy, CFEI, CFPS, MIFireE
Fire and Explosion Analyst
Sarasota, Florida
[www.kennedy-fire.com]



Subject Views Written By Posted
  igniting petrol vapour with a cigarette 695 flash 05/22/2009 05:09PM
  Re: igniting petrol vapour with a cigarette 397 MIKE 05/22/2009 06:22PM
  Re: igniting petrol vapour with a cigarette 410 SCarman 05/22/2009 11:24PM
  Re: igniting petrol vapour with a cigarette 387 PMK140 05/23/2009 09:19AM
  Re: igniting petrol vapour with a cigarette 348 MIKE 05/23/2009 09:31AM
  Re: igniting petrol vapour with a cigarette 360 SCarman 05/23/2009 09:30PM
  Re: igniting petrol vapour with a cigarette 432 John J. Lentini, CFEI 05/23/2009 11:08PM
  Re: igniting petrol vapour with a cigarette 653 PMK140 05/23/2009 06:34AM
  Re: igniting petrol vapour with a cigarette 324 Fire 05/24/2009 09:08AM
  Re: igniting petrol vapour with a cigarette 334 flash 05/24/2009 09:45AM
  Re: igniting petrol vapour with a cigarette 253 flash 05/28/2009 02:23PM
  Re: igniting petrol vapour with a cigarette 273 PMK140 05/28/2009 04:52PM
  Re: igniting petrol vapour with a cigarette 240 Fire 05/28/2009 09:08PM
  Re: igniting petrol vapour with a cigarette 298 Gerald Hurst 05/29/2009 02:05AM
  Re: igniting petrol vapour with a cigarette 249 PMK140 05/29/2009 06:47AM
  Re: igniting petrol vapour with a cigarette 227 FWWhite 05/29/2009 07:01AM
  Re: igniting petrol vapour with a cigarette 234 MIKE 05/29/2009 07:31AM
  Re: igniting petrol vapour with a cigarette 235 Anonymous User 05/29/2009 07:32AM
  Re: igniting petrol vapour with a cigarette 244 MIKE 05/29/2009 07:57AM
  Re: igniting petrol vapour with a cigarette 216 dcarpenter 05/29/2009 08:38AM
  Re: igniting petrol vapour with a cigarette 223 cda 05/29/2009 04:27PM
  Re: igniting petrol vapour with a cigarette 262 PMK140 05/29/2009 04:41PM
  Re: igniting petrol vapour with a cigarette 252 SJAvato 05/29/2009 08:06AM
  Re: igniting petrol vapour with a cigarette 216 Gerald Hurst 05/29/2009 12:36PM
  Re: igniting petrol vapour with a cigarette 196 flash 05/29/2009 01:01PM
  Re: igniting petrol vapour with a cigarette 259 Gerald Hurst 05/29/2009 02:34PM
  Re: igniting petrol vapour with a cigarette 218 Sir Gary 05/30/2009 07:56AM
  Re: igniting petrol vapour with a cigarette 294 Gerald Hurst 05/30/2009 03:12PM
  Re: igniting petrol vapour with a cigarette 238 Sir Gary 05/31/2009 04:38AM
  Re: igniting petrol vapour with a cigarette 243 PMK140 05/29/2009 05:08PM
  Re: igniting petrol vapour with a cigarette 205 PMK140 05/29/2009 04:44PM
  Re: igniting petrol vapour with a cigarette 239 SCarman 05/30/2009 12:31AM
  Re: igniting petrol vapour with a cigarette 222 Gerald Hurst 05/30/2009 02:37PM
  Re: igniting petrol vapour with a cigarette 265 MIKE 05/29/2009 01:09PM
  Re: igniting petrol vapour with a cigarette 230 PMK140 05/29/2009 02:26PM
  Re: igniting petrol vapour with a cigarette 221 MIKE 05/29/2009 03:28PM
  Re: igniting petrol vapour with a cigarette 235 FWWhite 05/29/2009 04:25PM
  Re: igniting petrol vapour with a cigarette 202 flash 07/10/2009 10:17AM


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