Standards and regulations - Ex Zones - ATEX/IECEx

In this section we present the different global standards applicable to our range of products for potentially explosive atmospheres.

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EUROPEAN DIRECTIVE /34/EU

ATEX Directive /34/EU is a «new approach» directive that applies to protective systems against explosions as well as all equipment used in or related to explosive atmospheres, such as electrical and non-electrical equipment, components and safety devices, control and adjustments necessary for the safe operation of this equipment and protective systems. As a «new approach» directive, the European Directive defines the essential requirements for the safety and health which shall be respected by all manufacturers.

This Directive requires:

&#; For products: a type certification, a declaration of conformity and an instruction manual, allowing to affix the marking,

&#; For the manufacturers: a quality assurance system audited annually by a notified body, and the appointment of an authorised person called the Ex-Proof responsible person.

Main standards applied
 

&#; IEC/EN -0: Products for use in explosive gas atmospheres - General rules

&#; IEC/EN -1: Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures &#;d&#;

&#; IEC/EN -7: Explosive atmospheres - Part 7: Equipment protection by increased safety &#;e&#;

&#; IEC/EN -31: Explosive atmospheres - Part 31: equipment protection against ignition of dust by enclosure &#;t&#;.

 

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EUROPEAN DIRECTIVE /92/EC
 

The /92/EC Directive aims to improve the safety and health protection of workers potentially at risk from explosive atmospheres.

The employer shall:

&#; prevent the formation of explosive atmospheres or if this is not possible, prevent ignition of explosive atmospheres

&#; assess the specific risks arising from explosive atmospheres and to draw up and keep up to date an explosion protection document,

&#; classify places where explosive atmospheres may occur into zones,

&#; mitigate the harmful effects of an explosion to protect the health and safety of workers (install appropriate equipment, take organizational measures such as staff training, ...). 

IECEx 

There is voluntary certification international scheme: IECEx.
 

Its aim is to facilitate the international flow of electrical equipment intended to be used in potentially explosive atmospheres and thus avoiding multiple national certifications and at the same time ensuring an appropriate level of safety. The IECEx certification scheme allows the manufacturers of &#;Ex-proof&#; equipment to obtain a Certificate of Conformity that would be accepted in Member States in which this certification scheme is recognized.

CONDITIONS FOR EXPLOSION

Devices falling within the scope of the European Directive (see the guidelines on the application of the directive) and responding to the essential requirements for the safety and health are identified by a marking plate on which the logo appears.

(1) Optimal conditions: pressure, concentration.
(2) Gas : Methane, Acetylene, Hydrogen&#; Dusts : Wood, flour, sugar, aluminum, carbon&#; Vapor : Ethyl alcohol, Acetone.
(3) High temperature, mechanical or electrical arc and spark, static electricity, lightning, wrong use&#;

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