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The classification of hazardous areas where explosive gas atmospheres may be present is prescribed by European directives, international and national standards.This paper briefly outlines the area classification procedure and describes the approaches adopted by the international standard. Then a new approach to the calculation of the extent of zones, developed by the author and adopted by the Italian...
The safety and protection of workers is a duty of their employer. In case of presence of hazardous areas due to the risk of explosion, an area classification has to be performed to identify the shape and size of the locations where an explosion may happen. Two typical cases that can produce hazardous areas are gas emissions from a containment system, because of normal operation or because of a failure,...
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