DeepDiver wrote:

"Pete C." wrote in message
...

While displacing oxygen with the Argon is possible and you certainly
need proper ventilation, you also need to look realistically at the
actual risk.
snip
In real world use you're not going to come anywhere close to dumping
that much Argon in an evenings project.

Don't forget that, in the real world, cylinders have been known to leak.

Yes, but my point was that even dumping a full 220cf cylinder will not
create a hazard to humans. I am making the fairly safe assumption that a
hobby welder will not be storing a dozen leaking 220cf Argon tanks in
their work area though.

Pete C.