HAZARDOUS AREA CLASSIFICATIONS
HAZARDOUS AREA CLASSIFICATIONS
Hazardous area classification is
very important especially for the electrical equipment’s. We seen many
electrical incidents in the process industries are due to lack in the adherence
of HAC System.
HAZARDOUS AREA CLASSIFICATION PART 1
Please watch the Videos on HAZARDOUS AREA CLASSIFICATIONS which contains 4 Parts, You will get the details information on the subject.
HAZARDOUS AREA CLASSIFICATION PART 2
A “hazardous area” is defined as an
area in which the atmosphere contains, or may contain in sufficient quantities,
flammable or explosive gases, dusts or vapours. In such an atmosphere a fi re
or explosion is possible when three basic conditions are met. This is often
referred to as the “hazardous area” or “combustion” triangle.
When the electrical equipment is
used in, around, or near an atmosphere that has flammable gases or vapors,
flammable liquids, combustible dusts, ignitable fibers or flyings, there is
always a possibility or risk that a fire or explosion might occur. Those areas
where the possibility or risk of fire or explosion might occur due to an
explosive atmosphere and/or mixture is often called a hazardous (or classified)
location/area. Currently there are two systems used to classify these hazardous
areas; the Class/Division system and the Zone system. The Class/Division system
is used predominately in the United States and Canada, whereas the rest of the
world generally uses the Zone system.
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