SAFETY AND OPERATING INSTRUCTIONS
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SMOKE, FUMES, AND GASES CAN BE DANGEROUS TO YOUR HEALTH
Ventilation must be adequate to remove smoke, fumes, and gases during operation
to protect operators and others in the area. Vapors of chlorinated solvents can
form the toxic gas “Phosgene” when exposed to ultraviolet radiation from an
electric arc. All solvents, degreasers, and potential sources of these vapors must
be removed from the operating area. Use air-supplied respirators if ventilation
is not adequate to remove all fumes and gases. Oxygen supports, and vigorously accelerates fire
and should never be used for ventilation.
See safety and operating references 1, 2, 3, and 4.
ARC RAYS, HOT SLAG, AND SPARKS CAN INJURE EYES AND BURN SKIN
Welding and cutting processes produce extreme localized heat and strong
ultraviolet rays. Never attempt to weld/cut without a federally compliant welding
helmet with the proper lens. A number 12 to 14 shade filter lens provides the
best protection against arc radiation. When in a confined area, prevent the
reflected arc rays from entering around the helmet. Approved shielding curtains
and appropriate goggles should be used to provide protection to others in the surrounding area.
Skin should be protected from arc rays, heat, and molten metal. Always wear protective gloves
and clothing. All pockets should be closed and cuffs sewn shut. Leather aprons, sleeves, leggings,
etc. should be worn for out-of-position welding and cutting, or for heavy operations using large
electrodes. Hightop work shoes provide adequate protection from foot burns. For added protection,
use leather spats. Flammable hair preparations should not be used when welding/cutting. Wear
ear plugs to protect ears from sparks. Where work permits, the operator should be enclosed in
an individual booth painted with a low reflective material such as zinc oxide.
See safety and operating references 1, 2, and 3.
WELDING SPARKS CAN CAUSE FIRES AND EXPLOSIONS
Combustibles reached by the arc, flame, flying sparks, hot slag, and heated
materials can cause fire and explosions. Remove combustibles from the work
area and/or provide a fire watch. Avoid oily or greasy clothing as a spark may
ignite them. Have a fire extinguisher nearby, and know how to use it. If welding/
cutting is to be done on a metal wall, partition, ceiling, or roof, precautions must
be taken to prevent ignition of nearby combustibles on the other side. Do not
weld/cut containers that have held combustibles. All hollow spaces, cavities, and containers
should be vented prior to welding/cutting to permit the escape of air or gases. Purging with inert
gas is recommended. Never use oxygen in a welding torch. Use only inert gases or inert gas
mixes as required by the process. Use of combustible compressed gases can cause explosions
resulting in personal injury or death. Arcing against any compressed gas cylinder can cause
cylinder damage or explosion. See safety and operating references 1, 2, 5, 7, and 8.
NOISE CAN DAMAGE HEARING
Noise from the air carbon-arc process can damage your hearing. Wear protective
hearing devices to ensure protection when noise levels exceed OHSA standards.
Adequate hearing protection devices must be worn by operators and surrounding
personnel to ensure personal protection against noise.
See safety and operating references 1, 2, and 6.
Safety Precautions