Chicago Welding 94164 - Prevent Accidental Fires; Avoid Fume and Gas Overexposure

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Troubleshooting section at end of manual.
Page 7SKU 94164
10. Prevent accidental res. Remove any combustible material from the
work area.
When possible, move the work to a location well away from combustible •
materials. If relocation is not possible, protect the combustibles with a
cover made of re resistant material.
Remove or make safe all combustible materials for a radius of 35 feet (10 meters) •
around the work area. Use a re resistant material to cover or block all open
doorways, windows, cracks, and other openings.
Enclose the work area with portable re resistant screens. Protect combustible •
walls, ceilings, oors, etc., from sparks and heat with re resistant covers.
If working on a metal wall, ceiling, etc., prevent ignition of combustibles on the other •
side by moving the combustibles to a safe location. If relocation of combustibles
is not possible, designate someone to serve as a re watch, equipped with a re
extinguisher, during the cutting process and for at least one half hour after the
cutting is completed.
Do not weld or cut on materials having a combustible coating or combustible •
internal structure, as in walls or ceilings, without an approved method for eliminating
the hazard.
Do not dispose of hot slag in containers holding combustible materials. Keep a •
re extinguisher nearby and know how to use it.
After spot welding, make a thorough examination for evidence of re. Be aware •
that easily-visible smoke or ame may not be present for some time after the re
has started. Do not weld or cut in atmospheres containing dangerously reactive
or ammable gases, vapors, liquids, and dust. Provide adequate ventilation in
work areas to prevent accumulation of ammable gases, vapors, and dust. Do not
apply heat to a container that has held an unknown substance or a combustible
material whose contents, when heated, can produce ammable or explosive
vapors. Clean and purge containers before applying heat. Vent closed containers,
including castings, before preheating, welding, or cutting.
Avoid overexposure to fumes and gases. 11. Always keep your head out of the
fumes. Do not breathe the fumes. Use enough ventilation or exhaust, or both, to
keep fumes and gases from your breathing zone and general area.
Where ventilation is questionable, have a qualied technician take an air sampling •
to determine the need for corrective measures. Use mechanical ventilation to
improve air quality. If engineering controls are not feasible, use an approved
respirator.
Work in a conned area only if it is well ventilated, or while wearing an air-supplied •
respirator.
Follow OSHA guidelines for Permissible Exposure Limits (PEL’s) for various fumes •
and gases.