Piranha CNC Plasma Cutting Table, Operating Manual

Page: 13 / 176

SAFETY
Sept-2018
13
Metal Fumes
Metal fumes are produced when the plasma arc vaporizes the metal. A hazard may
exist when uncontrolled, excessive levels of metal fumes are produced some
vaporized metals form toxic gases. These metals may be in their pure metallic state,
in an alloy, or in a coating such as paint or plating.
Metals that are known to produce toxic fumes include beryllium, cadmium, lead,
manganese, mercury, and zinc. Beryllium products require particular care, because
their fumes are highly toxic. If there is proper venting to the outside and the
machine's internal ventilation system is functioning normally, there should be
adequate control of metal fumes during torch cutting.
Metal Dust
Metal dust is formed as metal vaporizes during torch cutting. A hazard may exist
when uncontrolled, excessive levels of metal dust are produced. If there is proper
venting to the outside and the machine's internal ventilation system is functioning
normally, there should be adequate control of metal dust during torch cutting. For
proper ventilation, at least 90% of the worktable should be covered by the workpiece
(or other sheet metal covers).
See dust collector vendor installation and operation manual for additional
precautions.
FIRE PREVENTION
All combustible materials must be removed from the immediate cutting area to at
least 35 feet away. Appropriate fire extinguishing equipment must be available in
the immediate cutting area.
After cutting, be sure to allow the metal to cool sufficiently before handling or before
allowing contact with combustible materials.
Never plasma cut empty containers that have held toxic or potentially explosive
materials. Those containers must be thoroughly cleaned according to national
standards prior to cutting or welding.
Never plasma cut in an atmosphere that contains heavy concentrations of dust,
flammable gas, or combustible liquids (such as petrol).
WARNING
Since plasma arc cutting produces hot metal, sparks,
and slag, precautions must be taken to prevent fire or
explosions.