Fire/Arson Investigations :  Fire/Arson Investigations The fastest message board... ever.
A place to ask questions and add to probative and informative discussions associated with the various aspects of the field of fire investigation. -- FORUM RULES---BE CIVIL AND NO NAME CALLING, NO BELITTLING, NO BERATING, NO DENIGRATING others. Postings in violation of these rules can be removed or editted to remove the offending remarks at the discretion of the moderators and/or site administrator. 
Re: Explosion Question
Posted by: Gerald Hurst (IP Logged)
Date: November 01, 2006 10:23AM

Gasoline and natural gas have inherently about the same explosive potential. Gasoline often ignites before it has had a chence to diffuse into the surrounding air. Under these conditions the combustion rate is usually slow enough to allow venting which mitigates the over-pressure. However, if substantial premixing occurs before ignition., the effects of the explosion will be substantially the same as those of premixed methane.

Conventional detonating (and deflagrating) explosives can produce damage which mimics that of a vapor or gas explosion. If the charge is small and located away from hard target materials, the high-pressure effects of detonation dissipate before the shock wave or the pressure front reaches walls and ceilings. Under these conditions, the force on the walls and ceilings can be comparable to that produced by a vapor/gas explosion. If a subsequent fire does not destroy the evidence, an investigator may find small remnants of the packaging materials or blasting cap.



Subject Views Written By Posted
  Explosion Question 1749 fyrecop 10/30/2006 11:42AM
  Re: Explosion Question 1152 PMK140 10/30/2006 12:11PM
  Re: Explosion Question 1062 Gerald Hurst 10/30/2006 04:23PM
  Re: Explosion Question 1045 PMK140 10/30/2006 07:41PM
  Re: Explosion Question 1095 Gerald Hurst 10/31/2006 02:29AM
  Re: Explosion Question 1028 PMK140 10/31/2006 07:34AM
  Re: Explosion Question 980 Gerald Hurst 10/31/2006 12:28PM
  Re: Explosion Question 1012 PMK140 10/31/2006 01:55PM
  Re: Explosion Question 990 Ron Hopkins 11/01/2006 08:03AM
  Re: Explosion Question P.S. To Dr. Hurst 999 PMK140 10/31/2006 07:47AM
  Re: Explosion Question P.S. To Dr. Hurst 1011 Gerald Hurst 10/31/2006 11:34AM
  Re: Explosion Question P.S. To Dr. Hurst 968 PMK140 10/31/2006 12:14PM
  Re: Explosion Question P.S. To Dr. Hurst 985 MIJ 10/31/2006 02:34PM
  Re: Explosion Question 1009 dcarpenter 10/31/2006 08:47AM
  Re: Explosion Question 1066 SJAvato 10/30/2006 12:52PM
  Re: Explosion Question 1060 firecop5002 10/31/2006 05:09AM
  Re: Explosion Question 1023 John J. Lentini, CFEI 10/31/2006 10:03AM
  Re: Explosion Question 988 PMK140 10/31/2006 10:30AM
  Re: Explosion Question 1005 John Gow RFP 10/31/2006 03:09PM
  Re: Explosion Question 909 fyrecop 10/31/2006 08:37PM
  Re: Explosion Question 977 Gerald Hurst 11/01/2006 10:23AM
  Re: Explosion Question 893 PMK140 11/01/2006 02:43PM
  Re: Explosion Question 904 firetwin2 11/01/2006 08:35PM


Sorry, only registered users may post in this forum.
This forum powered by Phorum.