Re: airgraver power supply
You are correct in saying argon displaces oxygen. My fear is, since argon is heavier than air, it collects at the lower levels and therefore could accumulate if there is no ventilation. When working on construction sites, it has accumulated in small depressions and ditches and was deadly on one job I know of. The worker went into the ditch, beant over and immediately collapsed. His buddy jumped in to rescue him and was killed immediately also. I fear argon for that main reason. It could happen in a small shop that is not properly ventilated, and that tends to mess up a potentially fine day.
|