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3.
Seal cracks and openings to adjacent areas that a spark or slag can enter. Seal any openings
found with a fire-resistant cover. Shut doors and windows that do not provide ventilation or
erect protective screens in front of them when possible.
4. Avoid welding near hydraulic lines or containers containing flammable contents.
5.
Do not perform any welding work on containers that held flammable or toxic substance
until they are cleaned by a person trained in removing toxic and flammable substances and
vapours per the American Welding Standard AWS F4.1.
6.
Open a container before performing any welding work on it. The heat generated by the
welding process will cause the air and gases to expand. The internal pressure may cause a
sealed or closed container to rupture, possibly causing an injury or death.
7.
Do not weld pipes or metal that are covered in combustible material or in contact with
combustible structure such as a wall. Only weld if the covering can be safely removed.
7.1 Follow all safety precautions and legal requirements before welding a workpiece that
contains Asbestos or attempting to remove the Asbestos covering. This requires expert
knowledge and equipment.
7.2 Molten slag can run down the inside and outside of a pipe and start a fire. Be aware
where the pipe terminates and take precautions.
8.
Do not weld a panel that is a sandwich construction of combustible and metal materials.
9.
Have a fire extinguisher available for immediate use. A dry chemical fire extinguisher for
Types A, B and C is suggested.
9.1 Welding a combustible metal like zinc, magnesium or titanium requires a Type D
fire extinguisher.
9.2 Do not use liquid-based fire extinguishing methods near the electric welding unit, as it
may cause a shock hazard.
10. Ventilation systems should be positioned so sparks or molten slag isn't carried to an
adjacent area.
11. Have a Fire Watcher observing areas outside of the welder's view, such as the opposite side
of a wall or behind the welder. A fire may also start on the other side of a structure that
could not be removed. The Fire Watcher will extinguish a fire or raise the alarm to evacuate
if the fire cannot be contained by the extinguishing equipment.
11.1 A fire watch extends at least 30 minutes after the welding is complete to ensure there
are no fires caused by smoldering sparks or ejected material.
FUMES AND GASES
WARNING! Stop welding and move to a location with ventilation if your eyes, nose or throat
become irritated. This indicates the ventilation is not adequate to remove the fumes. Do not
resume welding until the ventilation is improved and the discomfort ceases. Seek medical
attention if the symptoms do not diminish or if the welder experiences nausea, dizziness
or malaise.
Welding may produce hazardous fumes and gas during the welding process. A well-ventilated
work area can normally remove the fumes and gases, but sometimes the welding produces
fumes and gases that are hazardous to your health.
1.
Only work in a confined space if the area is well ventilated or while wearing a respirator or
an air-supplied respirator. Welding fumes and gases can displace air and lower the oxygen
level causing injury or death. Be sure the breathing air is safe. Always have a trained
watchperson nearby.
1.1 If ventilation in the work area is poor, use an approved air-supplied respirator. All the
people in the work area must also have air-supplied respirators.
1.2 Oxygen displacement can occur in confined areas when the shielding gas fills the area
and pushes out air. Argon, Propane and Carbon Dioxide are heavier than air and will fill
a confined space from the bottom up.
6
GASLESS MIG WELDER PN105I
For technical questions call 1-800-665-8685
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