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ATEX SUPPORT

WHAT IS ATEX LIGHTING?

An explosive atmosphere is caused when flammable gases, vapours or dusts mix with oxygen in the air.  For an explosion to be caused in these atmospheres, all that is needed is a source of ignition. This means that when working in an explosive atmosphere, workers require a source of lighting that has been specifically designed for use in ATEX zones...

ZONE 0

For hazardous areas in which a flammable atmosphere is continually present or present for long periods.

ZONE 1

For hazardous areas in which a flammable atmosphere is likely to occur in normal operation.

ZONE 2

For hazardous areas in which a flammable atmosphere is not likely to occur in normal operation and, if it occurs, will exist for a short period.

ZONE 20

 For areas in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is present continuously, or for long periods or frequently for short periods.

ZONE 21

For areas in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is likely to occur occasionally in normal operation.

ZONE 22

For areas in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

SITE ZONE CLASSIFICATION

TYPE OF AREA ZONE FOR GASES, VAPORS AND MIST COMBUSTIBLE SOLID DUST AREA
Work area in which an explosive atmosphere is present permanently, for a prolonged period of time or frequently. 0 20
Work area in which the occasional formation of an explosive atmosphere is likely under normal operating conditions. 1 21
Work area in which the formation of an explosive atmosphere is unlikely under normal operating conditions. If formed, such an explosive atmosphere only remains for short periods of time. 2 22
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