Hypertherm MicroEDGE Pro Shape Cutting Control Rev.2 - Manual (Page 15)

Hypertherm S-5
Safety
03/10
The plasma arc by itself is the heat source used for
cutting. Accordingly, although the plasma arc has not
been identified as a source of toxic fumes, the material
being cut can be a source of toxic fumes or gases that
deplete oxygen.
Fumes produced vary depending on the metal that is
cut. Metals that may release toxic fumes include, but
are not limited to, stainless steel, carbon steel, zinc
(galvanized), and copper.
In some cases, the metal may be coated with a
substance that could release toxic fumes. Toxic
coatings include, but are not limited to, lead (in some
paints), cadmium (in some paints and fillers), and
beryllium.
Gases produced by plasma cutting vary based on the
material to be cut and the method of cutting, but may
include ozone, oxides of nitrogen, hexavalent chromium,
hydrogen, and other substances if such are contained
in or released by the material being cut.
Caution should be taken to minimize exposure to fumes
produced by any industrial process. Depending upon
the chemical composition and concentration of the
fumes (as well as other factors, such as ventilation),
there may be a risk of physical illness, such as birth
defects or cancer.
It is the responsibility of the equipment and site owner
to test the air quality in the area where the equipment is
used and to ensure that the air quality in the workplace
meets all local and national standards and regulations.
The air quality level in any relevant workplace depends
on site-specific variables such as:
• Table design (wet, dry, underwater).
• Material composition, surface finish, and composition
of coatings.
• Volume of material removed.
• Duration of cutting or gouging.
• Size, air volume, ventilation and filtration of the
work area.
• Personal protective equipment.
• Number of welding and cutting systems in operation.
• Other site processes that may produce fumes.
If the workplace must conform to national or local
regulations, only monitoring or testing done at the
site can determine whether the site is above or below
allowable levels.
To reduce the risk of exposure to fumes:
• Remove all coatings and solvents from the metal
before cutting.
• Use local exhaust ventilation to remove fumes from
the air.
• Do not inhale fumes. Wear an air-supplied respirator
when cutting any metal coated with, containing, or
suspected to contain toxic elements.
• Assure that those using welding or cutting equipment,
as well as air-supplied respiration devices, are
qualified and trained in the proper use of such
equipment.
• Never cut containers with potentially toxic materials
inside. Empty and properly clean the container first.
• Monitor or test the air quality at the site as needed.
• Consult with a local expert to implement a site plan
to ensure safe air quality.
toxIC fUMES CAN CAUSE INjURy oR DEAtH