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Product Consulting, ATEX directive
  1. What is ATEX directive?
    ATEX is the common name given to the EU directive 94/9/EC, Equipment and Protective Systems intended for use in Potentially Explosive Atmospheres.

    The word ATEX is derived from the French "Atmospheres Exposable

    From the 1st July 2003, all new equipment intended for use in potentially explosive atmospheres must comply with ATEX Directive 94/9/EC, introduced under Article 100a of the Treaty of Rome. The Directive applies to any equipment that will or may be used in an explosive atmosphere. Manufacturers must design and test components to prevent or minimize the risk of explosion due to the production or release of explosive atmospheres. Essentially, manufacturers must consider every possible electrical or non-electrical source of ignition. And, at the same time, consider all potentially hazardous environments a product could operate in; the different ways it could be applied and the technical ability of the person using the product.

    As of this date, all equipment within the scope of the Directive must comply with the requirements of the Directive and bear the Ex Mark and CE Marking in order to be placed on the market or put into service within the EU. ATEX Directive 94/9/EC is also known as ATEX 100a and ATEX 95, this directive allows movement throughout the European Union and has been in existence through statutory regulations in the UK since March 1996, since when manufacturers have been in a transitional period.

    From July 2003, all equipment and protective systems for use in higher risk areas must be marked legibly and indelibly with the name and address of the manufacturer, CE mark and number of Notified Body, designation of series or type of equipment, specific explosive protection 'Ex' hexagon logo, year of manufacture and serial number. It may also need to carry the EC Type Examination Certificate details. For CE marking, as well as compliance with ATEX, all hazardous area equipment must comply with any other applicable directives. Currently, the CE mark does not prove ATEX compliance as some hazardous area equipment may be CE marked through compliance with other mandatory directives.

  2. Why certification for ATEX directive?

  3. What is the purpose of ATEX directive?
    The main purpose of the ATEX directive is to minimize, or completely eliminate, the risk of ignition in explosive areas and to limit the harmful effects in case of an explosion.

    ATEX was introduced to harmonies the national regulations within the EU and to introduce a new common directive for materials in explosive atmospheres.

    The present ATEX directive 94/9/EC replaces all previous ATEX directives. The new directive deals with both electrical and mechanical equipment, whereas the previous directives only dealt with electrical equipment. Hence, it is an enforcement of safety regulations. The present ATEX directive, 94/9/EC, replaces previous ATEX directives about electrical equipment.

  4. Conformity Assessment Procedures for ATEX directive?
    Procedures vary depending on the category of equipment and the zones for which the equipment is intended to be used. In general they are as follows

    • EC Type Examination - Examination by a Notified Body of compliance documentation and a sample of the product to be certified
    • Production QA (Quality Assurance) - The manufacturer shall operate a quality system for production, inspection and testing that has been approved and is regularly assessed by a Notified Body
    • Product Verification - Each separate unit produced shall be individually assessed by a Notified Body
    • Conformity to Type - The manufacturer shall take all steps necessary to ensure that all units are manufactured in compliance with the Directive and to the same design and quality as the sample type tested. Each unit manufactured will be subjected to testing approved by a Notified Body
    • Internal Control of Production - The manufacturer shall prepare technical documentation that allows the conformity of a product to be assessed. In some circumstances a copy of this documentation shall be presented to a Notified Body for review.

    In all cases it will be necessary for the manufacturer to prepare a full Technical File for the product(s) that demonstrates their conformity with the requirements of the ATEX Directive 94/9/EC.

  5. Which product can go for ATEX directive?
    The ATEX directive covered
    • Equipment and products that have potential ignition sources.
    • Protective Systems - products that control the effects of incipient explosions.
    • Safety Devices - products that may be outside a potentially explosive atmosphere but that have an explosion safety function.
    • Components - products that are intended to form parts of equipment or protective systems
    • Equipment and Products that fall within the scope of the Directive are divided into two Groups:

    Group I comprises equipment intended for use in mines, above and below ground.

    Group II comprise equipment intended for use in other locations endangered by explosive atmospheres.

    Equipment and Products in each Group are divided into Categories based on the level of protection required. The categories are as follows:

    Group I
    Category M1 - Equipment in this category is required to remain functional with an explosive atmosphere present.

    Category M2
    - This equipment is intended to be de-energized in the event of an explosive atmosphere forming.

    Group II
    Category 1 - Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air and gases, vapors or mists or by air/dust mixtures are present continuously, for long periods or frequently.

    Category 2 - Equipment in this category is intended for use in areas in which explosive atmospheres caused by gases, vapors, mists or air/dust mixtures are likely to occur.

    Category 3 - Equipment in this category is intended for use in areas in which explosive atmospheres caused by gases, vapors, mists or air/dust mixtures are unlikely to occur or, if they do occur, are likely to do so only infrequently and for a short period only.

  6. What are the advantage of ATEX directive

  7. Important links for a ATEX directive.

  8. Downloads & images

  9. Please email us on customer.care@netpeckers.net for further details
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