ATEX Beyond Europe
ATEX Beyond Europe
ATEX is an EU regulatory framework, but hazardous areas exist worldwide and equipment needs to move across borders. Understanding how ATEX relates to other international systems helps manufacturers access global markets and helps end-users source appropriate equipment. The landscape is complex, but the good news is that the technical foundations—primarily the IEC 60079 series of standards—are increasingly shared worldwide.
The IECEx System
The IECEx System is the international certification scheme for equipment used in explosive atmospheres, administered by the International Electrotechnical Commission. Unlike ATEX, which is regulatory (backed by EU law), IECEx is voluntary and operates through mutual recognition between participating certification bodies worldwide.
IECEx uses the same IEC 60079 series standards that form the technical basis for ATEX, so the technical requirements are largely aligned—even though the certification processes and legal frameworks differ. An IECEx certificate demonstrates that equipment has been tested and assessed to the same international standards used in Europe.
Key IECEx schemes include the Certified Equipment Scheme (for product compliance), the Certified Service Facilities Scheme (for repair and overhaul workshops), and the Certificate of Personnel Competence (for qualified individuals working in hazardous areas).
ATEX vs IECEx: Key Differences
While technically aligned, the two systems have important practical differences. ATEX is a legal requirement for EU market access—without it, you cannot sell equipment in the EU. IECEx is voluntary, facilitating trade but not legally mandated by any single jurisdiction. ATEX conformity assessment is performed by EU-notified bodies; IECEx certification by IECEx-accepted certification bodies. An ATEX certificate from a European notified body doesn't automatically become an IECEx certificate—but the test reports and technical documentation can support an IECEx application, reducing duplication significantly.
Some certification bodies hold both ATEX notified body status and IECEx certification body status, offering streamlined dual certification through a single process.
North American Systems
The United States and Canada use a fundamentally different classification system. Traditionally, North America uses Division 1 and Division 2 (rather than zones), though zone-based classification is now accepted as an alternative in both countries. Equipment approval is handled by Nationally Recognised Testing Laboratories (NRTLs) such as UL, FM, and CSA.
North American requirements aren't equivalent to ATEX—equipment certified for one system isn't automatically accepted in the other. Manufacturers targeting both markets typically need separate certifications, though test reports and documentation can be leveraged across assessments to reduce cost and time.
Other National Systems
Many countries have their own certification requirements, often based on IEC standards but with local variations. Brazil requires INMETRO certification based on IEC standards. Russia and the Eurasian Economic Union require EAC certification under TR CU 012/2011. China requires CNEX or CQST certification. Australia accepts IECEx certificates but may require additional national documentation.
Market Access Strategy
For equipment manufacturers, the landscape means making strategic decisions about which markets to target. ATEX alone covers the EU/EEA market of 450 million consumers. Adding IECEx extends reach to countries accepting those certificates. North America, China, and other major markets typically require separate local certification. The cost and time of multiple certifications must be weighed against market opportunity.
What Matters for EU End-Users
For end-users in Europe, the answer is simple: ATEX marking is what's legally required. Equipment with only IECEx certification, or North American FM/UL/CSA approval, cannot be placed on the EU market or installed in EU classified areas without ATEX certification—regardless of how technically equivalent the testing might be. If you're sourcing equipment from outside Europe, confirm ATEX certification exists before purchasing.