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Explosive Dust Atmospheres
An explosive dust atmosphere is created when a mixture of air with flammable substances in the form of dust or fibres occurs. When ignited, the burning spreads through the rest of the atmosphere.
Different types of dust are divided into subgroups IIIA (fibres, i.e., tobacco, saw dust), IIIB (non-conductive dusts, i.e., flour, powdered sugar) and IIIC (conductive dusts, i.e., toner, graphite powder). IIIC dusts are typically the most dangerous, while IIIB dusts are classed as more dangerous when there is chance of an electrostatic charge.
What is a dust approved torch?
All Peli dust approved torches are ATEX Directive compliant, certified for use in Zone 20 (Category 1D) environments and meet the IEC (International Electrotechnical Commission) requirements set by an approved body.
Lifetime coverage against breakage and defective workmanship is included with every dust approved torch in the form of the legendary Peli Lifetime Guarantee.
ATEX Zones for Dust
Zones refer to the areas in which a torch is safe to use.
Zone 20 or Category 1D: an area in which an explosive mixture is continuously present or present for long periods.
Zone 21 or Category 2D: an area in which an explosive mixture is likely to occur in normal operation.
Zone 22 or Category 3D: an area in which an explosive mixture is unlikely to occur in normal operation, or only for a short time if it does occur.
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