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Re: Explosion Question
Posted by: Ron Hopkins (IP Logged)
Date: November 01, 2006 08:03AM

There were several changes that will be included in the ROP for 921 that will be issued by NFPA according to the current schedule. I believe that they were in the definitions section and the change was an attempt to correct the confusion.....by users. The changes will be contained in a committee proposal as a result of several PUblic Proposals on the same subject matter being grouped into one action. Sorry I do not have the exact content.

Low Order and High Order Detonation
Low Order and High Order Damage
Low Explosives and High Explosives

Terms are not interchangable and do have different definitions.

Maybe we should have done something with a definition of "Detonation" which is broadly defined as a reaction greater than the speed of sound in the medium. Which if it is a diffuse fuel one would have to determine the speed of sound based on conditions etc. Generally, with explosives, the dividing line between low explosives and high explosives is about 3300 fPS detonation velocity.

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Subject Views Written By Posted
  Explosion Question 1743 fyrecop 10/30/2006 11:42AM
  Re: Explosion Question 1150 PMK140 10/30/2006 12:11PM
  Re: Explosion Question 1060 Gerald Hurst 10/30/2006 04:23PM
  Re: Explosion Question 1042 PMK140 10/30/2006 07:41PM
  Re: Explosion Question 1094 Gerald Hurst 10/31/2006 02:29AM
  Re: Explosion Question 1025 PMK140 10/31/2006 07:34AM
  Re: Explosion Question 978 Gerald Hurst 10/31/2006 12:28PM
  Re: Explosion Question 1009 PMK140 10/31/2006 01:55PM
  Re: Explosion Question 987 Ron Hopkins 11/01/2006 08:03AM
  Re: Explosion Question P.S. To Dr. Hurst 996 PMK140 10/31/2006 07:47AM
  Re: Explosion Question P.S. To Dr. Hurst 1010 Gerald Hurst 10/31/2006 11:34AM
  Re: Explosion Question P.S. To Dr. Hurst 965 PMK140 10/31/2006 12:14PM
  Re: Explosion Question P.S. To Dr. Hurst 984 MIJ 10/31/2006 02:34PM
  Re: Explosion Question 1005 dcarpenter 10/31/2006 08:47AM
  Re: Explosion Question 1062 SJAvato 10/30/2006 12:52PM
  Re: Explosion Question 1058 firecop5002 10/31/2006 05:09AM
  Re: Explosion Question 1021 John J. Lentini, CFEI 10/31/2006 10:03AM
  Re: Explosion Question 986 PMK140 10/31/2006 10:30AM
  Re: Explosion Question 1002 John Gow RFP 10/31/2006 03:09PM
  Re: Explosion Question 907 fyrecop 10/31/2006 08:37PM
  Re: Explosion Question 974 Gerald Hurst 11/01/2006 10:23AM
  Re: Explosion Question 892 PMK140 11/01/2006 02:43PM
  Re: Explosion Question 901 firetwin2 11/01/2006 08:35PM


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