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It is imperative that equipment and products certified with an ATEX Certificate or IECEx Certification be put into use in any environment that is explosive or potentially explosive, as these certifications serve as a crucial safeguard to help ensure production safety. A wide range of working conditions can be defined as explosive environments; some are obvious, such as oil drilling platforms, while others may not be immediately recognized as such, for example, flour mills.

Most of us have heard of ATEX and IECEx certifications, but a common question asked by many people is—what makes them so distinctive and worthy of recognition? Today we are going to popularize professional knowledge about these certifications.

ATEX Certification

The ATEX Certificate Directive, named after the French term ATmosphères EXplosibles (explosive atmospheres), applies to manufacturers of equipment intended for use in potentially explosive atmospheres. The scope of equipment covered by this directive is exceptionally broad, generally including equipment used in fixed offshore platforms, petrochemical plants, flour mills, and other locations where potentially explosive atmospheres may exist. The directive also applies to components essential for safe use, as well as safety devices that directly contribute to the safe operation of equipment within its scope. These devices may be installed outside potentially explosive atmospheres.

ATEX Certification is mandatory across the entire European Union, covering all stages from manufacturing to equipment installation and use. The CE marking is a mandatory mark; all products that comply with all provisions of the ATEX Directive must bear the CE marking. Therefore, affixing the CE marking on explosion-proof products is a basic requirement for compliance with the ATEX Directive, as well as special proof that the conformity assessment procedures specified in the directive have been implemented.

IECEx Certification

The IEC Scheme for Certification to Standards for Electrical Equipment for Explosive Atmospheres (hereinafter referred to as the IECEx Certification System) was established in 1996 and is an international certification organization for explosion-proof electrical products. Currently, the IECEx Certification System has 22 official member countries, including major industrialized nations in Europe, the Americas and Oceania, as well as Russia, South Korea, Singapore, Japan and other countries.

The ultimate goal of the IECEx system is to achieve global acceptance.

However, at present, only ATEX Certificates are recognized for explosion-proof products exported to EU countries, while IECEx Certificates are not accepted.

Some of the benefits of choosing products with IECEx Certification include:

Reduced testing and certification costs

Shorter time-to-market

Enhanced international confidence in the product evaluation process

Like ATEX Certification, IECEx Certification provides assurance and ensures that everything—from equipment and installation to the manufacture, operation and maintenance of certified products—complies with IEC international standards and is fit for its intended purpose.

Differences Between ATEX and IECEx

ATEX is a mandatory certification in the EU. All explosion-proof equipment sold on the EU market must be certified in accordance with the ATEX Directive 94/9/EC.

IECEx is a voluntary certification with no mandatory requirements. It is not currently recognized in the EU and North American markets; products entering these markets need to apply for the required certifications separately.