Inasmuch as vapors from halogenated solvents such as trichloroethylene
are decomposed by ultra- violet light to form highly toxic gases, it is
recommended that degreasers or other sources of such vapors be so located
that the vapors will not reach the welding operation.
Detailed safety practices are given in the publication A6.1-55T on
"Recommended Safe Practices for Inert-Gas Metal-Arc Welding", published
by The American Welding Society.
Caution to be exercised by operator when adjusting gas pressure regulator
Do not stand directly in front while adjusting gas flow.
Argon gas cylinder should never be grounded whether it be intentionally
or accidentally. Extreme caution should be exercised against accidental
grounding against metal tables, steel beams, etc.
The argon gas cylinder should always be tied to a vertical structure
or otherwise supported so that it cannot fall over. If the cylinder
should fall and break off the top of the cylinder, the cylinder can
become a gas propelled projectile due to the gas pressure in the cylinder.
WARNING: The accidental striking of the welding electrode against the
compressed gas cylinder could result in a burn-thru of the tank creating
a safety hazard.