ATEX vs. IECEx - A critical decision

ATEX and IECEx certifications

Both serve to validate the safety of equipment operated in environments where explosions could occur, yet they are distinct in scope and application. ATEX, which stands for “ATmosphères EXplosibles,” is a regulatory requirement confined to the European Union. It mandates compliance with a set of Essential Health and Safety Requirements (EHSRs) and is enforced by European bodies known as ExNBs (Ex Notified Bodies), which grant EU Type Examination Certifications specific to the EU market.

IECEx, the International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres, has a broader, global reach and is not limited to any single region. Its mission is to streamline the certification process to reduce costs and development time for manufacturers, enhancing global trade and cooperation. With a centralized database and a uniform certification process overseen by the IECEx Management Committee, IECEx certifications facilitate international recognition and acceptance of equipment and services, providing certificates of conformity that are recognized worldwide.

While ATEX is tailored to meet EU-specific requirements, many companies outside of the EU still adhere to its standards, which often align with IEC’s international standards to demonstrate compliance. In contrast, IECEx offers a singular, international certification process that allows for a more cohesive global standard, promoting confidence in product safety across borders.

Navigating the Technical Landscape

The path to certification can seem daunting, especially for those new to the field. Here is a breakdown of key concepts:

• Hazardous Area Classification: Zones (0, 1, 2) indicate the likelihood of an explosive atmosphere being present. Gas and dust groups define specific explosion characteristics. Temperature classes (T1 to T6) factor in ignition temperatures.
• Equipment Protection Levels (EPL): Categories like Ga, Gb, Gc (IECEx) or categories 1, 2, 3 (ATEX) indicate the safety level of your equipment and its suitability for specific zones.
• Protection Methods: Your choice of protection method (e.g., flameproof enclosures, intrinsic safety, pressurization) determines the equipment's EPL, gas/dust group, and temperature class.
• ATEX vs. IECEx: These schemes are technically remarkably similar, often allowing for simultaneous assessment, simplifying compliance across different markets.

Standards to Know:

The following IEC/EN standards are essential for demonstrating compliance in hazardous locations:

• IEC/EN 60079-0: General Requirements
• IEC/EN 60079-1: Flameproof 'd'
• IEC/EN 60079-2: Pressurization 'p'
• IEC/EN 60079-5: Sand/Quartz-filled 'q'
• IEC/EN 60079-6: Oil-filled 'o'
• IEC/EN 60079-7: Increased Safety 'e'
• IEC/EN 60079-11: Intrinsic Safety 'i'
• IEC/EN 60079-15: Non-incendive 'n'
• IEC/EN 60079-18: Encapsulation 'm'
• ISO/EN 80079-36/37: Non-electrical equipment

The cost of an early mistake

Securing expert guidance from a notified body with specialized knowledge in ATEX and IECEx classifications before embarking on product testing is an investment in efficiency and financial prudence. Misclassifying a product at the outset can lead to substantial resource wastage, as the ensuing costs and delays in rectifying such errors can be considerable. Incorrect categorization may necessitate retesting, redesign, and even reevaluation of the product's market viability. Moreover, a product that fails to receive HazLoc approval due to misclassification is barred entry into critical markets, undermining potential revenue streams and amplifying opportunity costs. Experienced agencies ensure that products are correctly aligned with the nuanced requirements of each target market from the beginning, streamlining the path to compliance and market entry, and safeguarding against the costly consequences of missteps in the complex landscape of hazardous location certifications.

We are Here to Help

The certification process involves detailed technical knowledge. Partnering with experienced consultants can guide you through selecting the appropriate standards, designing your equipment for safety, and achieving the necessary certifications to reach your desired markets.