Hazard

Factors to Consider

Precautionary Summary

• Wetness
• Welder in or on workpiece
• Confined space
• Electrode holder and cable insulation

• Insulate welder form workpiece and ground using dry insulation. Rubber mat or dry wood.
• Wear dry, hole-free gloves. (Change as necessary to keep dry.)
• Do not touch electrically "hot" parts or electrode with bare skin or wet clothing.
• If wet area and welder cannot be insulated from workpiece with dry insulation, use a semiautomatic, constant-voltage welder or stick welder with voltage reducing device.
• Keep electrode holder and cable insulation in good condition. Do not use if insulation is damaged or missing.

• Confined area
• Positioning of welder’s head
• Lack of general ventilation
• Electrode types, i.e., manganese, chromium, etc. See MSDS
• Bases metal coatings, galvanize, paint

• Use ventilation or exhaust to keep air breathing zone clear, comfortable.
• Use helmet and positioning of head to minimize fume in breathing zone.
• Read warnings on electrode container and material safety data sheet (MSDS) for electrode.
• Provide additional ventilation/exhaust where special ventilation requirements exist.
• Use special care when welding in a confined area.
• Do not weld unless ventilation is adequate.

• Containers which have held combustibles
• Flammable materials

• Do not weld on containers which have held combustible materials (unless strict AWS F4.1 procedures are followed). Check before welding.
• Remove flammable materials from welding area or shield from sparks, heat.
• Keep a fire watch in area during and after welding.
• Keep a fire extinguisher in the welding area.
• Wear fire retardant clothing and hat. Use earplugs when welding overhead.

• Process: gas-shielded arc most severe

• Select a filter lens which is comfortable for you while welding.
• Always use helmet when welding and tacking.
• Provide no-flammable shielding to protect others.
• Wear clothing which protects shin while welding.