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Re: Minimum Ignition Energy (mJ) of gases
Posted by: J L Mazerat (IP Logged)
Date: December 29, 2017 03:09PM

I agree with you, what does it matter. The latest I had on this was an engineer/fire investigator saying the specific minimum ignition energy for methane was .28 mJ according to NFPA 921. He had no knowledge as to the potential for this value to be wrong by 20%. I do not believe he ever read the ASTM standard. The problem is there was a chance the jury would believe this is an absolute value. I have sent a public input to 921 to have the wording from the precession section of that ASTM document added under the table.

Jim Mazerat
Forensic Investigations Group

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Subject Views Written By Posted
  Minimum Ignition Energy (mJ) of gases 1547 J L Mazerat 12/29/2017 09:47AM
  Re: Minimum Ignition Energy (mJ) of gases 834 Mark Goodson 12/29/2017 10:47AM
  Re: Minimum Ignition Energy (mJ) of gases 832 J L Mazerat 12/29/2017 03:09PM
  Re: Minimum Ignition Energy (mJ) of gases 801 rdzimm 12/30/2017 01:25PM
  Re: Minimum Ignition Energy (mJ) of gases 827 Fire 12/30/2017 01:32PM
  Re: Minimum Ignition Energy (mJ) of gases 800 Sir Gary 12/31/2017 12:31AM
  Re: Minimum Ignition Energy (mJ) of gases 835 J L Mazerat 12/30/2017 08:06PM
  Re: Minimum Ignition Energy (mJ) of gases 838 John Lentini 12/31/2017 05:13PM
  Re: Minimum Ignition Energy (mJ) of gases 815 J L Mazerat 12/31/2017 08:19PM
  Re: Minimum Ignition Energy (mJ) of gases 773 Chris Bloom, CJBFireConsultant 01/02/2018 03:06AM
  Re: Minimum Ignition Energy (mJ) of gases 754 J L Mazerat 01/02/2018 10:13AM
  Re: Minimum Ignition Energy (mJ) of gases 763 dcarpenter 01/02/2018 11:49AM
  Re: Minimum Ignition Energy (mJ) of gases 797 J L Mazerat 01/02/2018 12:31PM
  Re: Minimum Ignition Energy (mJ) of gases 853 dcarpenter 01/02/2018 01:44PM
  Re: Minimum Ignition Energy (mJ) of gases 786 J L Mazerat 01/02/2018 03:20PM
  Re: Minimum Ignition Energy (mJ) of gases 791 dcarpenter 01/02/2018 03:54PM
  Re: Minimum Ignition Energy (mJ) of gases 762 dcarpenter 01/02/2018 03:58PM
  Re: Minimum Ignition Energy (mJ) of gases 750 J L Mazerat 01/02/2018 07:13PM
  Re: Minimum Ignition Energy (mJ) of gases 792 J L Mazerat 01/02/2018 07:12PM
  Re: Minimum Ignition Energy (mJ) of gases 897 dcarpenter 01/02/2018 01:58PM
  Re: Minimum Ignition Energy (mJ) of gases 766 J L Mazerat 01/02/2018 02:31PM
  Re: Minimum Ignition Energy (mJ) of gases 765 dcarpenter 01/02/2018 03:35PM
  Re: Minimum Ignition Energy (mJ) of gases 773 dcarpenter 01/02/2018 05:25PM
  Re: Minimum Ignition Energy (mJ) of gases 746 J L Mazerat 01/02/2018 07:27PM
  Re: Minimum Ignition Energy (mJ) of gases 782 J L Mazerat 01/02/2018 07:18PM


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