I don't believe they ever ran at 16 psi gage.  The capsule was designed to run
pure oxygen at the same partial pressure as on earth, which meant around 3 psi,
absolute in space.  I believe the tests were run at 3 psi over atmospheric, or
about 17.7 or so absoute.

Would not 30 psi absolute of oxygen be deadly?

Marshall

James-Osborn: Holmes-Junior wrote:

> It is reported that in one shuttle accident, when they were running an
> atmosphere of pure O2 at 16 psi above atmospheric, one fellows hand---not
> glove---caught on fire.
>
> -----Original Message-----
> From: Marshall Dudley [mailto:mdud...@execonn.com]
> Sent: Tuesday, April 15, 2003 9:36 PM
> To: silver-list@eskimo.com
> Subject: Re: CS>Oxygen, Burn or Explode? ELABORATION
>
> This is true. I have seen steel burn brilliantly several times in oxygen.
>
> Marshall
>
> Albert Peirce wrote:
>
> > The danger of an oxygen rich atmosphere is that any combustion
> > reaction is intensified! I believe that Gus Grissom and several other
> > astronauts died as a result of an electrical fault (short circuit) in
> > a confined space that was oxygen-rich and that everything that was
> > combustible (wire insulation, seat covers and foam padding, paper and
> > clipboards, etcetera) burned with incredible rapidity and intensity!
> > Check with AGA or one of your local welding suppliers to see if they
> > are offering any educational demos on the dangers of combustible gases
> > and oxidisers (oxygen). Well worth the time! Regards, Al...
> > ----- Original Message -----
> > From: "Wayne Fugitt" <wa...@fugitt.com>
> > To: <silver-list@eskimo.com>
> > Sent: Tuesday, April 15, 2003 8:26 AM
> > Subject: CS>Oxygen, Burn or Explode?
> >
> > > Morning Tish,
> > >
> > > >As a former welder, sucking up oxygen should be done with great
> > > >care as just about anything burns in the presence of pure oxygen.
> > > >All it takes is a spark and - WA LA - no more hair and a serious
> > > >burn.
> > >
> > >    You mean, burn, not explode, I suppose.     Can you elaborate a bit?
> > >
> > >    Many materials cannot be ignited easily with a spark.
> > >
> > >    If you mean,  explode, then most gases have a narrow range of
> > > concentration that can produce an explosion.
> > >
> > >    I had a chart of these different gasses and the concentration
> > > range required to produce an explosion at one time.
> > >
> > >    I use oxygen in my den when walking on the treadmill.  I have
> > > intended to do a concentration percentage, using the 5 liters per
> > > minute and the volume of the room.
> > >
> > >    In this case, I don't think the hazard is nearly as great as I
> > > have
> > been
> > > led to believe by the non-technical.
> > >
> > >    There is a gas heater about 25 feet away.  Sometime I turn it
> > > off, including the pilot.
> > >
> > >    Wayne
> > >
> > >
> > >
> > > --
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> > >