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| Authored by: Anonymous on Friday, June 22 2012 @ 03:16 PM EDT |
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| Authored by: tiger99 on Saturday, June 23 2012 @ 05:55 AM EDT |
| Sure enough, the BOC
safety data sheet says that welding oxygen, and even high purity oxygen, are
not for breathing. But I have to wonder why, because oxygen is usually made from
the air that we breathe, by a process of cooling, and selective distillation of
the various other useful gases, argon being the most valuable in large
quantities, followed by nitrogen. There are minor gases too, CO2 has no real
value as it is made cheaper in bulk elsewhere, but there will be traces of
various others, some relatively scarce and valuable but not commodity products .
So where does it pick up anything toxic? I have also noticed that mediacal
oxygen has a slight smell and taste, and assume that is because they add
something to prevent bugs breeding in the hospital pipework. But I could be
wrong. [ Reply to This | Parent | # ]
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| Authored by: globularity on Saturday, June 23 2012 @ 06:28 AM EDT |
To be used for cutting oxygen must be 99% + pure. It is usually produced in a
cryogenic distillation plant,which is kept very clean made of 304 or 9% nickel
steel, oil free compressors, everything volatile is going to condense out before
the CO2 removal stage and be ejected with the dry ice at this point.
Hydrocarbons are such a danger in an oxygen plant they are proscribed. From the
liquefaction stage the oxygen is vaporised and with oil free compressor
compressed up to bottle pressure. The danger of explosion is one driver behind
impurity removal, another is that impurities freeze and plug the system and
finally many welding applications require high purity gases. I would be quite
happy to breathe welding oxygen diluted with the appropriate quantity of
nitrogen, certainly cleaner than the air in my city.
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Windows vista, a marriage between operating system and trojan horse.[ Reply to This | Parent | # ]
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| Authored by: Anonymous on Sunday, June 24 2012 @ 05:32 AM EDT |
Welding O2 is the same gas as medical O2. But it is not traceable in the way
Medical gas must be.
I've been breathing welding oxygen for years, as have many of my companions.
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