An
approved test office will only certify the function the
components manufacturer after comprehensive
test, and will assign them into categories according to
failure safety. addition, the testing offices use regu-
lar audits with the manufacturers ensure continu-
ously guaranteed product quality.
In the European Union, the preconditions for complete
standardisation were created the directives
2014/34/EU for manufacturers and 99/92/EC for op-
erators. The manufacturers' directive 2014/34/EU
(ATEX) regulates the requirements for the structure of
explosion-protected devices and protection systems,
by prescribing basic health and safety requirements.
Zone assignment devices according their
category and/or protection level according DIN
EN 60079-14 (IEC 60079-14)
Zone Device category Device protection level EPL
0 Ga
1 Gb
2 Gc
Zone assignment example “gasses”
ATEX guidelines
The ATEX directives regulate the requirements res-
ulting from the use devices and protection systems
in potentially explosive areas.
Manufacturers components for potentially explosive
areas must obtain approval for their products.
0 Zone 0
1 Zone 1
2 Zone 2
3 Combustible substance
Example assignment into zones
Electrical devices may used different zones, de-
pending the device protection level EPL and device
category.The operator building specifies the appropriate
potentially explosive areas, divides them into zones
and labels them diagram the systems be
protected according the Ordinance Industrial
Safety and Health, and the Hazardous Substances
Ordinance.
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Chapter The external lightning protection system
. For the planning lightning protection
measures, these drawings must reviewed before
the planning and erection the lightning protection
system. Due increasing inter-
national economic intermeshing, major progress has
been achieved the standardisation the explosion
protection regulations. The
quality requirements for the production resources
without effective sources ignition very high. According GefStoffV 2015, the operator is
required compile this explosion protection docu-
ment
