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FUMES AND GASES can be hazardous.
Welding and cutting produces fumes and gases.
Breathing these fumes and gases can be hazardous
to your health.
D Keep your head out of the fumes. Do not breathe the fumes.
D If inside, ventilate the area and/or use local forced ventilation at the
arc to remove welding and cutting fumes and gases.
D If ventilation is poor, wear an approved air-supplied respirator.
D Read and understand the Material Safety Data Sheets (MSDSs)
and the manufacturer's instructions for metals, consumables,
coatings, cleaners, and degreasers.
D Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Always have a trained watch-
person nearby. Welding and cutting fumes and gases can displace
air and lower the oxygen level causing injury or death. Be sure the
breathing air is safe.
D Do not weld or cut in locations near degreasing, cleaning, or spray-
ing operations. The heat and rays of the arc can react with vapors
to form highly toxic and irritating gases.
D Do not weld or cut on coated metals, such as galvanized, lead, or
cadmium plated steel, unless the coating is removed from the weld
area, the area is well ventilated, and while wearing an air-supplied
respirator. The coatings and any metals containing these elements
can give off toxic fumes if welded.
ARC RAYS can burn eyes and skin.
Arc rays from welding and cutting processes
produce intense visible and invisible (ultraviolet and
infrared) rays that can burn eyes and skin. Sparks fly
off from the weld.
D Wear an approved welding helmet fitted with a proper shade of
filter lenses to protect your face and eyes from arc rays and
sparks when welding, cutting, or watching (see ANSI Z49.1 and
Z87.1 listed in Safety Standards).
D Wear approved safety glasses with side shields under your
helmet.
D Use protective screens or barriers to protect others from flash,
glare and sparks; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant
material (leather, heavy cotton, or wool) and foot protection.
WELDING AND CUTTING can cause
fire or explosion.
Welding or cutting on closed containers, such as
tanks, drums, or pipes, can cause them to blow up.
Sparks can fly off from the welding or cutting arc. The
flying sparks, hot workpiece, and hot equipment can
cause fires and burns. Accidental contact of electrode to metal
objects can cause sparks, explosion, overheating, or fire. Check and
be sure the area is safe before doing any welding or cutting.
D Remove all flammables within 35 ft (10.7 m) of the welding or cut-
ting arc. If this is not possible, tightly cover them with approved
covers.
D Do not weld or cut where flying sparks can strike flammable
material.
D Protect yourself and others from flying sparks and hot metal.
D Be alert that welding sparks and hot materials from welding and
cutting can easily go through small cracks and openings to adja-
cent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that welding or cutting on a ceiling, floor, bulkhead, or
partition can cause fire on the hidden side.
D Do not weld or cut on containers that have held combustibles, or on
closed containers such as tanks, drums, or pipes unless they are
properly prepared according to AWS F4.1 and AWS A6.0 (see
Safety Standards).
D Do not weld or cut where the atmosphere may contain flammable
dust, gas, or liquid vapors (such as gasoline).
D Connect work cable to the work as close to the welding or cutting
area as practical to prevent welding or cutting current from travel-
ing long, possibly unknown paths and causing electric shock,
sparks, and fire hazards.
D Do not use welder to thaw frozen pipes.
D Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
D Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding or cutting.
D After completion of work, inspect area to ensure it is free of sparks,
glowing embers, and flames.
D Use only correct fuses or circuit breakers. Do not oversize or by-
pass them.
D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
FLYING METAL or DIRT can injure eyes.
D Welding, cutting, chipping, wire brushing, and
grinding cause sparks and flying metal. As
welds cool, they can throw off slag.
D Wear approved safety glasses with side
shields even under your welding helmet.
BUILDUP OF GAS can injure or kill.
D Shut off compressed gas supply when not in use.
D Always ventilate confined spaces or use
approved air-supplied respirator.
ELECTRIC AND MAGNETIC FIELDS (EMF)
can affect Implanted Medical Devices.
D Wearers of Pacemakers and other Implanted
Medical Devices should keep away.
D Implanted Medical Device wearers should consult their doctor
and the device manufacturer before going near arc welding, spot
welding, gouging, plasma arc cutting, or induction heating
operations.
NOISE can damage hearing.
Noise from some processes or equipment can
damage hearing.
D Wear approved ear protection if noise level is
high.
CYLINDERS can explode if damaged.
Compressed gas cylinders contain gas under high
pressure. If damaged, a cylinder can explode. Since
gas cylinders are normally part of the welding
process, be sure to treat them carefully.
D Protect compressed gas cylinders from excessive heat, mechani-
cal shocks, physical damage, slag, open flames, sparks, and arcs.
D Install cylinders in an upright position by securing to a stationary
support or cylinder rack to prevent falling or tipping.
D Keep cylinders away from any welding, cutting, or other electrical
circuits.
D Never drape a welding or cutting torch over a gas cylinder.
D Never allow a welding electrode or cutting torch to touch any
cylinder.
D Never weld on a pressurized cylinder − explosion will result.
D Use only correct compressed gas cylinders, regulators, hoses,
and fittings designed for the specific application; maintain them
and associated parts in good condition.
D Turn face away from valve outlet when opening cylinder valve.
D Keep protective cap in place over valve except when cylinder is in
use or connected for use.
D Use the right equipment, correct procedures, and sufficient num-
ber of persons to lift and move cylinders.
D Read and follow instructions on compressed gas cylinders,
associated equipment, and Compressed Gas Association (CGA)
publication P-1 listed in Safety Standards.
OM-254 498 Page 3
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