Welding and flame cutting

Pages:243-249
28 Welding and flame cutting
28.1. General provisions
28.1.1. Welders should wear fire-resistant protective clothing
and equipment such as fire-resistant gauntlets and aprons, helmets
and goggles with suitable ifiter lenses.
28.1.2. Welders should wear clothing that is free from grease,
oil and other flammable material.
28.1.3. Workers removing excess metal, slag, etc. should:
wear gloves and goggles or a face screen;
chip away from the body; and
ensure that other persons are not struck by chips.
28.1.4. Adequate precautions should be taken to protect per-
sons working or passing near welding operations from dangerous
sparks and radiation.
28.1.5. When welding or cutting is being done on materials
containing toxic or harmful substances or liable to produce toxic
or harmful fumes, adequate precautions should be taken to protect
workers from the fumes either:
by exhaust ventilation; or
by respiratory protective equipment.
28.1.6. At places where welding machines are operated by
internal combustion engines, adequate ventilation should be
provided.
28.1.7. A suitable fire extinguisher should be kept ready for
immediate use at places where welding is done.
28.1.8. The oxygen pressure for welding should always be
high enough to prevent acetylene flowing back into the oxygen
cylinder.
28.1.9. Acetylene should not be used for welding at a pressure
exceeding 1 atm. gauge.
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