Please note prior to fan selection: If you are not sure whether you need an explosion proof ATEX fan or need to know the zone in which your application is classified, please consult an official authority in your country.
As of 20th April 2016, the new Directive ATEX 2014-34 EU superseded the previous ATEX 94/9/EC Directive which became legally effective on 1 July 2003.
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ATEX is an acronym derived from the words “Atmospheres Explosibles” and forms part of a European equipment directive known as ATEX 2014-34 EU. The directive covers manufacturing standards and ensures that people are protected against the risk that may be caused by dangerous substances. The directive covers equipment, protective systems, safety devices, controlling devices, regulating devices and components including industrial fans for installation within a system or as a standalone component in a hazardous environment. An air movement or any other application in other markets, will require an explosion proof ATEX fan if there are flammable, combustible gases or dusts present at any time in the air stream. This applies to industrial air movement applications including, but not limited to, machine cooling, process equipment, food processing and manufacturing and electrical cooling. As an example, potentially hazardous particles such as those found in sugar or flour in food processing applications should have an explosion proof fan installed within process systems to eradicate the risks as the materials are passed through. Material handling fans can be supplied as explosion proof or standard variants.
The updated Directive places responsibility on manufacturers of flameproof equipment to supply products that comply with specified directive classifications, as determined by the end-user. This now means that fans have to be designed to avoid the risk of electrical, electrostatic, thermal, and mechanical ignition hazards that may occur in specified flameproof Zones, Classifications and Gas Groups. Industrial fans are safeguarded against explosion through the use of aluminium or copper inlet rings, EEX motors and special coatings, please refer to fan specification and data sheet to check a product is suitable before purchase.
Axair Fans supply and sub manufacture plastic polypropylene corrosion resistant centrifugal fans to Equipment Category 3 (Zone 2) requirements by self-certification, and supply metal fans in both centrifugal and axial construction to Equipment Category 2 (Zone 1) that adhere to the new EU directive. For information on our corrosion resistant range of fans see our applications page.
Fore more information or news stories featuring our explosion proof fans in situe and for educational articles visit our news Section.
If an explosive atmosphere of flammable substances is specified, the following zones may exist:
Zone 0 (gases/vapours): an area in which an explosive mixture is continuously present or present for long periods.
Zone 1 (gases/vapours): an area in which an explosive mixture is likely to occur in normal operation.
Zone 2 (gases/vapours): an area in which an explosive mixture is not likely to occur in normal operation and if it occurs it will exist only for a short time.
Zone 20 (dusts): an area in which an explosive mixture is continuously present or present for long periods.
Zone 21 (dusts): an area in which an explosive mixture is likely to occur in normal operation.
Zone 22 (dusts): an area in which an explosive mixture is not likely to occur in normal operation and if it occurs it will exist only for a short time.
The Axair team have undertaken extensive training in ATEX regulations but have a duty of care to ensure we supply a suitable fan based upon a customer’s correct ATEX coding specifications. ATEX has to be understood as an ever evolving subject requiring competence and training that is now provided by UK notified bodies and consultancies. We advise that if anyone requires additional training in ATEX that they contact an independent body for assistance. Axair can supply fans suitable for ATEX applications within zone 1 & 2 manufactured from either metal or corrosion resistant polypropylene depending on the specification.
|Explosion Proof Information||EX Group or Class||ATEX Zone||Material or Gases||Temp (3)||Temp (4)||Temp (5)||Temp (6)|
|General Group||Group II||Surface Industries|
|Equipment Class||2 or 3||Zone 1 (high protection)||Metal fans only|
|Zone 2 (normal protection)||Plastic fans only|
|Atmosphere||G||Gas||Plastic and metal fans|
|D||Dust||Metal fans only|
|Gas Group||II||B or||e.g. Ethylene|
|Surface Temperature||T||1 (450°C)||2(300°C)||3(200°C)||4(135°C)||5(100°C)||or 6(85°C)|
|ATEX code example||EX II 3 G IIC T4|
Equipment excluded from the directive include:
Learn more about the official ATEX Directive.