Nitrogen and Fuel
Nitrogen and Fuel
(OP)
I posted a question over in the auto fuel section but would like to know from the Chemical Engineers exactly what problems (if any) arise when intoducing air to gasoline vapors. The companies that make these testers have a warning against using air but I dont see the problem especially since all auto fuel system introduce air into the system for the purge feature, not to mention opening the fuel cap. Any thoughts"
http://www.vacutec.com/downloads/Ford-Rotunda_Smok...
http://www.vacutec.com/downloads/Ford-Rotunda_Smok...





RE: Nitrogen and Fuel
Good luck,
Latexman
RE: Nitrogen and Fuel
RE: Nitrogen and Fuel
Good luck,
Latexman
RE: Nitrogen and Fuel
RE: Nitrogen and Fuel
http://www.youtube.com/watch?feature=player_embedd...
RE: Nitrogen and Fuel
There are a gazillion factors that come into play, like how volatile is the flammable liquid, the temperature of the liquid, how big is the leak, is it indoors or outdoors, which way is the wind blowing and how fast, where is the ignition source, is anyone in harms way, did they leave the tester running during break/lunch, etc., etc.
Most of the uncertainty is eliminated by using N2. The Ford tester is superior from a safety standpoint. It's probably more expensive too.
It's obvious your mind is made up, so why keep bringing it up?
Good luck,
Latexman
RE: Nitrogen and Fuel
That is the main issue as far as chemical compatibility goes: air + gas vapors = explosive mixture and shop environments generally are not Class 1 Div 1 or 2 rated. I'm trying to think if getting air into another pressurized system might result in corrosion or some material compatibility issue, but nothing comes to mind. Perhaps compressing air could result in a bit of water condensation which may be undesirable, but that's a bit of a stretch considering the very low pressures these are producing.
I'd suggest calling each vendor and asking why one can use air on a fuel system pressure test, and ask the other why the do NOT use air on a fuel system pressure test.
Onwards,
Matt
RE: Nitrogen and Fuel
RE: Nitrogen and Fuel
If the subject of flammable mixtures is of interest, visit thread798-33615: How to Calculate Flammability of gas mixture.
RE: Nitrogen and Fuel
Good luck,
Latexman
RE: Nitrogen and Fuel