g. After welding or cutting, make a thorough examination for evidence of fire.
Be aware that easily visible smoke or flame may not be pre sent for some time
after the fire has started. Do not weld or cut in atmospheres containing
h. Dangerously reactive or flammable gases, vapors, liquids, and dust.
i. Provide adequate ventilation in work areas to prevent accumulation of flam
mable 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 flammable or explosive vapors. Clean and purge containers before apply-
ing heat. Vent closed containers., including castings, before prehe ating, welding, or
cutting.
InHaLatIon HaZarD: Welding and Plasma Cutting Produce
exposure to welding or cutting exhaust fumes can increase the risk of de-
veloping certain cancers, such as cancer of the larynx and lung cancer. also,
some diseases that may be linked to exposure to welding or plasma cutting
exhaust fumes are:
a. early onset of Parkinson's Disease
b. Heart disease
c. Ulcers
d. Damage to the reproductive organs
e. Inflammation of the small intestine or stomach
f. Kidney damage
g. respiratory diseases such as emphysema, bronchitis, or pneumonia
Use natural or forced air ventilation and wear a respirator approved by
nIosH to protect against the fumes produced to reduce the risk of develo-
ping the above illnesses.
9. avoid overexposure to fumes and gases. Always keep your head out of the
fumes. Do not breathe the fumes. Use enough ventilation or exhaust, or both, to keep
en
WarnIng
toXIC FUmes.
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