Provides assurance that recognized best practice has been employed in the selection and construction of the assembly.

Technical Requirements

Assemblies of already-certified ATEX equipment require the system integrator to compile a technical file and assess the various sub-assemblies and certified products together. Notified Body services are not required under ATEX unless the assembly has been modified from its original certified design or it incorporates certified ‘U-type’ components, which must be re-assessed in the final ‘equipment’ application. However, even under the voluntary route, increasingly end users and plant operators require third-party verification of assembly compliance with international standards and recognized codes of practice.

Typical Products Include

• Enclosure systems incorporating U-type Components, certified by Unit Verification
• Skids or containerized equipment packages
• Temporary equipment packages

Accredited certification bodies such as DNV can provide third-party assessment and certification for such assemblies on a voluntary basis, ensuring recognized best practices in assembly selection and construction.

Related Directives, Schemes, and Standards

• ATEX Directive – 2014/34/EU (replacing ATEX Directive 94/9/EC)
• IECEx – The IEC System for Certification to Standards for Equipment in Explosive Atmospheres

Common Standards

• IEC/EN 60079-0: Explosive atmospheres - Part 0: Equipment - General requirements
• IEC/EN 60079-14: Explosive atmospheres - Part 14: Electrical installations design, selection, and erection
• IEC TS 60079-46: Part 46: Equipment assemblies
• IEC 61892: Mobile and fixed offshore units - Electrical installations

Our Offering

For applications requiring ATEX or IECEx Unit Verification, DNV conducts a thorough evaluation of component parts according to international standards and codes of practice to issue a Certificate of Conformity.

Our IECEx Certification Body and ATEX Notified Body services are issued by DNV Product Assurance AS in Oslo, Norway.