Power Fist 8598195 Manuel D'utilisateur page 9

V4.0
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.
a. 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.
b. Oxygen displacement can occur in confined areas when the shielding
gas fills the area and pushes out air.
i.
ii
2. Avoid positions that allow welding fumes to reach your face. Always
attempt to weld 'upwind' of the workpiece with the airflow across the face
of the welder. Airflow from behind may create a low pressure area in front
of the welder and draw the fumes to the person.
3. Ventilate the work area to remove welding fumes and gases. The fumes
and gases should be drawn away from the user.
a. Ventilation should be enough to disperse fumes, but not enough to
disturb the shielding gas or flame during welding.
b. Ventilation exhaust shall be directed to a non-work area to avoid
exposing other people to potential toxic or dangerous fumes.
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Cutting, Welding and Brazing Hose Torch
MAPP, Argon, Propane and Carbon Dioxide are heavier than air
and will fill a confined space from the bottom up.
Helium and natural gas are lighter than air and will fill a confined
space from the top down.
8598195
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