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Date: Sat, 12 May 2007 17:54:47 -0400
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From: "Rod Pharis" <rpharis@teamimc.com>
Subject: RE: [LML] Re: Mountain Air Oxygen
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Exactly true!  When suppliers of oxygen bottles, valves, tubing and
fittings, package, advertise and tag items stating, "Approved for oxygen
service," they mean that the items have been surgically cleaned of oil and
grease as well as the usual metal chips, dirt and other manufacturing
debris.  Intentionally applying grease or oil, or even mishandle with dirty
hands would be ludicrous!

Rod Pharis
Principal Engineer
Northrop Grumman Corporation

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of
Alain NOIREAUX
Sent: Saturday, May 12, 2007 12:30 PM
To: lml@lancaironline.net
Subject: [LML] Re: Mountain Air Oxygen


I can tell you that , when I was a jet fighter pilot ,I have seen a fire
starting in a cockpit where a friend of mine was waiting to start up .
An oxygen leak on a patch of grease on the canopy locking system and the
fire started . My comrade bailed out and ramp technicians used
extinguishers to stop the fire quickly. It is serious,not "old wives
tales" nor hangar jokes .
Keep that in mind when using oxygen and have nice flights .

Alain NOIREAUX

Chuck Jensen a écrit :
> Rick wrote...
>
> Oil, grease, etc can spontaneously combust in an oxygen rich
> environment.
>
> Want to try an experiment - Shoot pure O2 from an oxy/acetylene torch at
> an oily/greasy shop rag.  Be prepared for fire.  Thus, caution when
> using a torch with dirty (greasy) jeans and don't introduce ANY oil into
> your o2 system.
>
> Seems there was once even a warning about not using lipstick and oxygen
> together as the lipstick had a somewhat greasy base and could ignite
> when bathed in O2.  (Myth???)
> ------
> I understand that oils will oxidize (light, more volatile petroleum
> products do so faster than more viscous products, such as grease) and in
> a pile of rags, the slow oxidation can eventually generate enough heat
> to cause spontaneous combustion, but I'm not sure how that phenomena, or
> the torch analogy, apply to our aircraft and cockpit.  Nonetheless, your
> points are well taken and in the interest of safety and on the side of
> caution, I'm not going to wear lipstick when I use oxygen.  :-)
>
> Chuck
>
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