Superior Product Consulting, Inc. (SPC)
SUPERIOR PRODUCT CONSULTING, INC.
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Hazardous Locations Certification

 危險區域認證(防爆服務)


 

Definition:

According to definitions in the Canadian Electrical Code, U.S. National Electrical Code, IEC 60079-10 and CENELEC EN 60079-10, hazardous locations are defined when fire or explosion may result from the presence of:

Classes

Class I:  Flammable gases, vapors or liquids

Class II:  Combustible dusts

Class III:  Ignitable fibers or flyings

Divisions

Division 1 – A location where a classified hazard exists or is likely to exist under normal conditions

Division 2 – A location where a classified hazard does not normally exist but is possible to appear under abnormal conditions

North American transition to the zone system

The U.S. and Canada have recently revised installation codes to recognize an international 3-Zone area classification system for equipment used in hazardous locations.

Zone 0 – An area in which an explosive gas atmosphere is continuously present for a long period of time

Zone 1 – An area in which an explosive atmosphere is likely to occur in normal operation

Zone 2 – An area in which an explosive gas atmosphere does not normally exist.