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  1. BlkFury

    Flash Back Protection (LEL/LFL determination)

    Good points all around and I appreciate any in-depth knowledge on the subject. All my processes will be exhausting to 2" pipes with a wide range of fuels, oxidizers, and pyrophorics; including our friend ClF3. My main concern in this instance are the high volumes of H2 and possible oxidizers in...
  2. BlkFury

    Flash Back Protection (LEL/LFL determination)

    I have looked at other works, but I prefer to do the testing myself. I also want to simulate an air leak in the line, test with strait pipes, several 90's, etc. My predecessor did some work, but I don't think it was very comprehensive; didn't take into account process oxidizers. It will be a few...
  3. BlkFury

    Flash Back Protection (LEL/LFL determination)

    Thanks. That confirms what I found in a 1997 NASA document; the LEL/UELs are drawn in on the triangle graph as well. I will be running some tests in 2" SS pipe this next week to look at pressure waves and confirm flame velosity. By my calculations, the addition of an oxidizer really opens the...
  4. BlkFury

    Flash Back Protection (LEL/LFL determination)

    I will be setting up flash back protection for a large number of processes (exhaust) and I'm having trouble finding sources that are more specific to pipe flow concentrations in regards to LEL/LFL. These sitiuations would not be a percentage "In Air". I need a source that can give me an LEL/LFL...

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