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SAFETY
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FUMES AND GASES can be dangerous.
6.a.Welding may produce fumes and gases haz- ardous to health. Avoid breathing these fumes and gases.When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing zone. When welding with elec- trodes which require special ventilation such as stainless or hard facing (see instructions on container or MSDS) or on lead or cadmi- um plated steel and other metals or coatings which produce highly toxic fumes, keep exposure as low as possible and below Threshold Limit Values (TLV) using local exhaust or mechanical ventilation. In con- fined spaces or in some circumstances, out- doors, a respirator may be required. Additional precautions are also required when welding on galvanized steel.
6.b. Do not weld in locations near chlorinated hydro- carbon vapors coming from degreasing, clean- ing or spraying operations. The heat and rays of the arc can react with solvent vapors to form phosgene, a highly toxic gas, and other irri- tating products.
6.c.Shielding gases used for arc welding can dis- place air and cause injury or death. Always use enough ventilation, especially in confined areas, to insure breathing air is safe.
6.d. Read and understand the manufacturer’s instructions for this equipment and the consum- ables to be used, including the material safety data sheet (MSDS) and follow your employer’s safety practices. MSDS forms are available from your welding distributor or from the manufactur- er.
MAR95
CYLINDER may explode if damaged.
7.a. Use only compressed gas cylinders containing the correct shielding gas for the process used and properly operating regulators designed for the gas and pressure used. All hoses, fittings, etc. should be suitable for the application and maintained in good condition.
7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.
7.c. Cylinders should be located:
•Away from areas where they may be struck or subjected to physical damage.
•A safe distance from arc welding or cutting operations and any other source of heat, sparks, or flame.
7.d. Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a cylin- der.
7.e. Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.
7.f. Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use.
7.g. Read and follow the instructions on compressed gas cylinders, associated equipment, and CGA publication
