ATEX versus IECEx and Australian certificate selection

Buying explosion-protected lighting for an Australian hazardous area? Start with the site's hazardous area classification and the certificate for the exact equipment model, not the words “explosion proof” alone. This guide helps buyers prepare a document pack for review by their hazardous-area engineer.

ATEX versus IECEx: what is the difference?

ATEX is the European framework for equipment used in explosive atmospheres. IECEx is an international certification scheme. A product may carry both, but an ATEX certificate and an IECEx Certificate of Conformity are not interchangeable. SGS Australia explains the distinction between type examination and production supervision under the two schemes. Source: SGS Australia.

Australian acceptance of IECEx

IECEx is an established certification route for hazardous-area equipment selection in Australia. It is not blanket approval for every installation. The certificate must cover the supplied model and its protection ratings must suit the classified area, operating conditions and installation design.

Queensland's regulator identifies specific selection and installation requirements under AS/NZS 60079.14. Its hydrogen guidance specifically calls for IECEx-certified equipment rated for the relevant hazardous area classification. This sector-specific guidance should not be read as a universal approval statement for every Australian site. Confirm current jurisdiction, industry and project requirements with your responsible engineer or auditor. Source: WorkSafe Queensland, hazardous areas; hydrogen guidance.

When ATEX needs additional conformity assessment

Do not assume ATEX-only equipment is automatically acceptable in Australia. If the proposed equipment has ATEX certification but no applicable IECEx or other accepted certification, refer it to a competent hazardous-area specialist before ordering. A documented conformity assessment, commonly a Conformity Assessment Document (CAD), may be needed to justify its use against the applicable Australian requirements.

Australian specialists GENEX Energy and E-x Solutions describe this assessment route. It involves more than attaching an ATEX certificate: the assessment needs to consider the underlying certification, testing and equivalent safety, with the justification retained in the verification dossier. A CAD is not a promise of acceptance at every site. Ask the responsible engineer or auditor to confirm the proposed route before purchase. Source: GENEX Energy; E-x Solutions, Australian certification requirements.

Certificate selection checklist

1. Obtain the site classification. Ask for the hazardous area classification report and drawings, including the zone, required equipment protection level, equipment group and temperature requirements. Do not select a light from wattage or enclosure appearance alone.
2. Match the exact model. Request the equipment Certificate of Conformity and its complete schedules or annexes. Compare the manufacturer, model designation and supplied configuration with the equipment marking and supplier quotation. Resolve any mismatch before ordering.
3. Check the gas group. Compare the site's specified gas group with the Ex marking and the certificate's equipment description or schedule. Gas groups may be identified as IIA, IIB or IIC. Have the engineer confirm suitability for the actual substances present rather than choosing by a group label alone.
4. Check the temperature class. Compare the site's temperature requirement with the T-class on the equipment marking and certificate. Review the permitted operating conditions and manufacturer instructions. For combustible dust, check the applicable dust group and maximum surface temperature requirements separately; a gas rating alone does not establish dust suitability.
5. Read the conditions of use. Review every certificate condition and installation instruction, including any limits affecting ambient temperature, mounting, cable entries or accessories. Ask the reviewer to confirm that the proposed installation can satisfy them.
6. Confirm the acceptance route. If only ATEX documents are available, pause selection until the responsible specialist has identified any additional assessment and documentation needed.

Technical references: GENEX Energy, hazardous area verification dossiers and E-x Solutions, verification dossier contents.

Verification documents engineers commonly request

Use this as a procurement checklist, then ask your engineer to tailor it to the project. The equipment supplier normally provides product documentation; the designer, installer and owner contribute the site and installation records.

• The exact model's equipment certificate, complete schedules and conditions of use, plus any applicable conformity assessment.
• Equipment datasheets, technical information and manufacturer installation, operation and maintenance instructions.
• Hazardous area classification report and drawings showing zones, equipment groups and temperature requirements.
• An equipment register identifying the selected equipment and its location.
• Relevant drawings, circuit schedules, cable-entry selection records and accessory certificates, such as those for glands, adapters and plugs.
• For intrinsically safe systems, the applicable descriptive system documents, loop drawings and relevant calculations.
• Inspection and test records, together with maintenance, repair and modification records as the installation develops.

Keep these documents together in the hazardous area verification dossier and update it when equipment or site conditions change. Source: E-x Solutions, verification dossier; hazardous area audit preparation; GENEX Energy.

Explore lighting and request the model-specific documents

Browse our EXPLOSION PROOF LIGHT - IECEx Australian Certified collection or view our explosion-proof flood lights. Before ordering, request the certificate and technical documents for your selected model and configuration, then send them to your project's reviewer. A collection name or product listing does not replace certificate verification or establish suitability for your site.

Professional review note

This is general purchasing guidance, not legal advice, a conformity assessment or an engineering approval. Have a competent hazardous-area engineer review the current standards, jurisdictional and industry requirements, site classification, equipment certification and conditions of use before selection or installation. Where required, involve the relevant accredited auditor. This guide does not certify any listed product for a particular installation.