The areas Zone 1 and 2 are defined by EN 60079-14
EEx d is type of protection flameproof, defined by EN 50014, and is
suitable in Zone 1.
EEx n includes type of protection nA, nC, and nR, defined by EN 50021 and
are suitable for Zone 2.
Take a look at
Hi Chris,
Classified area = hazardous location = an area where the atmosphere may be
easily ignitable
Class = type of hazard; Class 1 = gas vapours; 2 = combustible dust, 3 =
ignitable fibers
Zone = Frequency of the hazard; Zone 1 means hazard present frequently or
for long periods; Zone 2
Chris,
This brings back a lot of memories; my first job out of college
was with Factory Mutual Research Corporation (www.fmglobal.com)
doing hazardous location approvals. Instead of reinventing the
wheel (and digging deep into memory), here's a link to an
excellent primer on explosion
Chris,
Looks like you're dealing with equipment for use in explosive atmosphere's
legislation/standards. The exact details vary a bit depending on the
world-region (US, Europe, etc...). One of the basic how to determine zones
documents is IEC 60079-10 and its few clones.
Watch out also for
Hello Chris,
While I can't supply specifics, I expect you can find what you need on
Links available on the Safety Link www.safetylink.com
Once you arrive therein, using your browser's FIND function (Control-F in
most browsers), search on the following terms:
ATEX
Ex Scheme
HAZLOC
Intrinsic
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