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HAZARDOUS (CLASSIFIED) LOCATIONS |
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Hazardous Location Conditions |
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The National Electrical Code writers have designated normal conditions as
division 1 and abnormal conditions as division 2. To be further descriptive, the division
1 or 2 designation can be applied to Class I, Class II, and Class III hazardous locations. For example Class I, Division 1 locations are the areas near open dome loading facilities or adjacent to relief valves in a petroleum refinery, because the hazardous material is present during normal plant operations. Closed storage drums containing flammable liquids in an inside storage room do not normally allow the hazardous vapors to escape into the atmosphere. But, what happens if one of the containers is leaking? Then you have a Class 1, Division 2 (abnormal - condition) hazardous location. |
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