IEVref:426-03-05ID:
Language:enStatus: Obsolete
Term: zone 2
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Definition: area in which an explosive gas atmosphere is not likely to occur in normal operation, but if it does occur, will persist for a short period only

NOTE 1 – In this definition, the word "persist" means the total time for which the flammable atmosphere will exist. This will normally comprise the total of the duration of the release, plus the time taken for the flammable atmosphere to disperse after the release has stopped.

NOTE 2 – Indications of the frequency of the occurrence and duration may be taken from codes relating to specific industries or applications.


Publication date:2008-02
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