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On just about any construction site, you’ll find compressed gas bottles. Electricians work near these bottles, if not directly with them. In a maintenance environment, multi-craft or not, these bottles are also present at times.
If you knock one over and it’s capped only with the regulator set, the bottle could take off like a rocket. Because of the energy stored within, even a partially charged bottle can easily puncture masonry walls. That’s one danger, and it applies no matter what gas is in the bottle. Among other measures, you protect against it by:
There are breathing dangers with these gases, also. Nitrogen (for purging) isn’t flammable, but it can kill you. Another danger is combustion/explosion, depending upon the gas. Gases for welding (e.g., acetylene or oxygen) are highly flammable. Some cautions:
Source: Mark Lamendola | Mindconnection