Is IECEx certification a legal requirement anywhere?
Abstract
IECEx is a voluntary international scheme, not a law. Some regulations accept an IECEx certificate as one route to compliance, such as US Coast Guard rules for vessels, and several countries base national approvals on IECEx reports. Customers often require it by contract.
IECEx certification is not a legal requirement in itself: it is a voluntary certification system run by the International Electrotechnical Commission (IEC), and no law we have verified makes an IECEx certificate the only accepted proof of conformity. What does exist are laws and regulators that accept IECEx certification as one way to comply, and national schemes that build their approvals on IECEx test and audit reports. For many manufacturers the main driver is commercial: customers and project specifications may ask for IECEx certificates.
Short answer
- Not a law: IECEx certifies equipment, service facilities and people to IEC standards. Whether its certificates count legally is decided by each country's own legislation.
- Accepted by some regulations: for example, US Coast Guard rules for electrical installations on vessels (46 CFR 111.105-3) allow equipment tested to the listed IEC 60079 parts and certified by an independent laboratory under the IECEx System, as one of three permitted routes.
- Used as a basis for national approval: the IECEx FAQ notes that most member countries still require their own national mark or approval, but the bodies in the scheme must accept the testing done by the other bodies when they issue their own national certification. IECEx documents are therefore a fast track rather than a replacement.
- Not accepted in place of ATEX in the EU, and not accepted directly for onshore installations in the USA and Canada.
- Sometimes required by contract: a project specification that asks for IECEx certificates makes IECEx a contractual requirement for that supplier.
How countries use IECEx in practice
The way an IECEx certificate is treated varies widely. A simplified picture:
| Use of IECEx | Examples | What the manufacturer still needs |
|---|---|---|
| Certificate accepted directly by the regulator or installation rules | Australia (Queensland's electrical safety regulator, for example, states that compliance of hazardous area equipment with Australian Standards is demonstrated through IECEx certificates of conformity); New Zealand shares the AS/NZS 60079 standards and is usually grouped with it; US vessels under 46 CFR 111.105-3 (one option of three) | The IECEx certificate and compliance with local installation rules |
| National certificate issued on the basis of IECEx reports | Several markets, see Ex certification in other markets | Application to the national body, national marking, sometimes extra audits or tests |
| Separate legal system | EU (ATEX), Great Britain (UKCA or CE marking under the 2016 product regulations), USA and Canada onshore | The national or regional certification; IECEx reports may reduce testing |
The IECEx FAQ states plainly that all that is required to sell Ex products in the EU is ATEX. An IECEx test report can support an EU-type examination, but the notified body's certificate is the legal document; see can an IECEx ExTR be used for ATEX.
The UN model for legislation
In 2010 the UN Economic Commission for Europe (UNECE) Working Party on Regulatory Cooperation and Standardization Policies adopted a "Common Regulatory Framework for Equipment Used in Environments with an Explosive Atmosphere", published in 2011 and developed with the IEC and IECEx. It is a blueprint that countries may adopt: it recommends relying on an international scheme such as IECEx for direct market acceptance of certified products, or, where national law does not allow that, basing national certification on IECEx testing and assessment. It has no legal force until a country writes it into its own law.
Is IECEx worth the cost for a manufacturer?
Because the answer is mostly commercial, the decision depends on the target markets:
- Selling only in the EU: ATEX is mandatory and sufficient by law. IECEx adds value only if customers ask for it or exports are planned.
- Selling worldwide: one test programme to IEC standards can produce an IECEx test report (ExTR), a quality assessment report (QAR) and an ATEX certificate, and the IECEx reports can be reused for several national approvals.
- Supplying international projects: check the project specification, which may name IECEx and the required standard editions.
- Offshore and marine: check the flag state, classification society and coastal state rules.
Example: A manufacturer of junction boxes sells in Europe and plans offshore projects in Australia and the Middle East. ATEX is required for Europe. IECEx is not legally required in most of its target markets, but it gives direct acceptance in Australia and a basis for national approvals elsewhere, and it is named in the operators' specifications. Testing once to IEC standards avoids repeating most of the tests for each market.
Common mistakes
- Calling IECEx "mandatory worldwide". It is voluntary; membership of a country in IECEx does not mean its law accepts IECEx certificates.
- Using an IECEx certificate to sell in the EU. CE marking under ATEX is still required.
- Forgetting national renewal dates. IECEx certificates do not expire, but many national approvals based on them do.
Related on excodex
- The IECEx scheme explained: CoC, ExTR, QAR and the online certificate database
- Ex certification in other markets: UKEX, EAC, INMETRO, CCC, PESO and others
- Which countries accept IECEx certificates directly?
- Is IECEx certification accepted in the EU instead of ATEX?
- Standard space: IECEx
Standards and further reading
- IECEx, frequently asked questions on the Certified Equipment Scheme (national acceptance, fast track, ATEX): iecex.com
- Queensland Government, eSafe newsletter (December 2022), "Achieving electrical safety with hydrogen equipment", on IECEx certificates for hazardous area equipment in Queensland: worksafe.qld.gov.au
- US Code of Federal Regulations, 46 CFR 111.105-3, approved equipment in hazardous locations on vessels: ecfr.gov
- UNECE, A Common Regulatory Framework for Equipment Used in Environments with an Explosive Atmosphere (ECE/TRADE/391, 2011): iecex.com
- European Commission, ATEX 2014/34/EU Guidelines, 6th edition (January 2026): webgate.ec.europa.eu
This article is general technical information prepared by the excodex editorial team. It does not replace the applicable standards, the equipment certificates and instructions, national regulations or the assessment of a competent person.