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ATEX I 03
WHAT CHANGES WITH ATEX?
The most important points are:
The definition of equipment categories and assignment to the hazardous areas (zones]
The regulation of Ex protection for dust (previously only addressed nationally); also associated with this is the redefinition of the Ex zones for dust (previously zones 10 and 11]
The inclusion of non-electrical equipment into the directive
The creation of an explosion protection document concerning the safety of the workplace and materials by the employer
The requirement for a formal assessment of explosion risks
The conformity evaluation process for the equipment by the manufacturer or by a "notified body" (dependent category]
The production of an EC Declaration of Conformity and affixing the CE mark to the product by the manufacturer and - depending on the category - of an EC Type Examination Certificate (previously Certificate of Conformity] by a "notified body" for all electrical products
The certification of the manufacturer's QA system (DIN EN ISO 9001 is not sufficient).
The provision of a mounting and operating manual with the equipment.
How can explosions occur?
Explosive atmospheres (Ex areas] are prerequisite for an explosion and can be found where a mixture of air, flammable gases, vapours or dusts are being produced, transformed or stored in the presence of oxygen.
Explosive atmospheres with gases, vapours and mists can usually be found in:
Chemical Facilities Industrial storage tanks Refineries
Water Treatment Facilities
Airports
Paint Facilities
Seaports
Explosive atmospheres with dusts can usually be found in:
Chemical Facilities
Power Plants
Paint Facilities
Grain Mills
Cement Factories
Seaports
Food Factories
Wood Processing Facilities
Plastic Granulate Facilities
Sources of Ignition
Hot Surfaces Flames and Hot Gases Mechanically Generated Sparks Electrically Generated Sparks Electro-statically Generated Sparks Adiabatic Compression Electro-Magnetic Radiation Ionising Radiation Chemical Reactions Ultra-sound Flashes
... and many other areas where goods are handled that form dust and powders
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