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Then of course one must consider the localization of temperature from
adiabatic processes attributed to velocity distribution of the gas in the
system. Resultant temperatures may far exceed the ignition temperature for
simple hydrocarbons, and the base non-metallic and metallic materials for
that matter (Note: One reason you should not see aluminum in HP O2 service -
Oh yes you can ignite it!). This requires an evaluation of the localized
pressure/temperature distribution as a result of gas compression as well as
the nominal static pressure. Heck you could not just have a failure but an
equipment meltdown!

Just my opinion,
Doug Chapman

P.S. Didn't we read on Techdiver last year about a fellow who used an
oil-based chapstick and burned the crap out of his mouth when he breathed
pure O2? 'Or was this another case of representing fiction as fact (common
on Techdiver & Cavers).

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