This European Standard specifies the requirements for venting devices used to protect enclosures against the
major effects of internal explosions arising from the rapid burning of suspended dust, vapour or gas contained
within. It includes the requirements for the design, inspection, testing, marking, documentation and packaging.
This European Standard specifies explosion venting devices which are put on the market as autonomous
protective systems.
Explosion venting devices are safety devices comprised of a pressure sensitive membrane fixed to and
forming part of the structure that it protects, designed to intervene in the event of an explosion at a
predetermined low pressure, to immediately open a vent area sufficient to ensure that the maximum pressure
attained by the explosion within the enclosure does not exceed its designed resistance to pressure.
The application and specification of explosion venting devices is outlined for dust explosion protection in
EN 14491 and for gas explosion protection in prEN 14994. The use of venting devices according to this
European Standard on pipelines and on applications other than described in EN 14491 or prEN 14994 needs
to be carefully evaluated and where appropriate their suitability needs to be confirmed by tests.
Flameless explosion venting devices avoid the breakthrough of flames into the surroundings. They are used to
allow explosion venting in situations where the hazards of flames resulting from the venting action are not
acceptable. Flameless explosion venting devices are treated in a separate standard.
This European Standard does not cover details for the avoidance of ignition sources from detection devices or
other parts of the venting devices.
Diese Europäische Norm legt Anforderungen an Druckentlastungseinrichtungen fest, die zum Schutz von druckfesten Gehäusen gegen interne Explosionen verwendet werden. Erfasst werden Anforderungen an Herstellung, Inspektion, Prüfung, Kennzeichnung, Dokumentation und Verpackung. Einrichtungen zur Explosionsdruckentlastung werden als wesentliche Teile/Elemente von autonomen Schutzsystemen verwendet (z.B. Druckentlastungssysteme bei Gas- und Staub-Explosionen). Für andere Verwendungen als zur Explosionsdruckentlastung muss die jeweils zutreffende Europäische Norm angewendet werden. In der vorliegenden Norm werden keine Einzelheiten zur Vermeidung von Zündquellen an Detektoren oder anderen Teilen der Druckentlastungseinrichtungen erfasst.