The 1996 NEC introduces North American electrical personnel to the concept of'Zones'in classifying hazardous (classified) locations.
In the NEC, hazardous locations are broken down by Class, with Class I for gases and vapors in areas where they are or many be present in sufficient quantity to form ignitable or explosive mixtures with air.
Class II locations include combustible dusts, and Class III locations cover fibers or flyings.
This paper focuses on the Zone classification system of Class I locations.
Under the new system, locations are divided into zones based on the likelihood of an explosive gas/vapor mixture presented.
Mots-clés Pascal : Article synthèse, Zonage, Etiquetage, Risque accidentel, Toxique, Explosion, Allumage, Encapsulation, Prévention accident, Enceinte, Matériel électrique
Mots-clés Pascal anglais : Zone classification system, Equipment markings, Hazardous locations, Explosive mixture, Flameproof, Reviews, Zoning, Labeling, Hazards, Hazardous materials, Explosions, Ignition, Encapsulation, Accident prevention, Enclosures, Electric equipment
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0453709
Code Inist : 001D05G. Création : 10/04/1997.