IECEx Scheme

The IECEx scheme is an international system equivalent to the IECEE CB scheme, but especially defined for explosion protected equipment. The objective of the IECEx system is to facilitate international trade in equipment and services for use in explosive atmospheres, while maintaining the required level of safety.Presafe is an approved test laboratory and certification body within the IECEx Certified Service Facilities program. In addition, Presafe is able to authorize the use of the IECEx mark. Similarly to the ATEX directive, IECEx is a conformity assessment scheme which provides assurance that equipment and systems in “explosive atmospheres” are manufactured and operated according to the highest international standards of safety.

ATEX is mandatory in the EU only, but is recognized as a standard of quality around the world. IECEx is currently accepted in Australia and New Zealand. It is however expected that  IECEx certified products will eventually be given global access. This development will further help reduce the need for country-specific certification and associated deviations worldwide. All issued IECEx certificates  are automatically registered and made available on the IECEx website  Manufacturers and end-users can through an easy search on the website find products and instantly access the associated certification documents.

The difference between IECEx and ATEX

IECEx and ATEX product approval is based on international standards and both use the same protection concepts etc. But there are some differences between the two:

  • In order to legally sell and supply an ATEX category 1 or category 2 product, manufacturers need to have both a Quality System approval certificate which covers the product standards used and a product conformity certificate for the product itself (EC-type examination certificate) (exceptions apply).
  • ATEX Category 3 can be self-certified or provided in the form of a third party certificate which however in itself does not require any quality system assessment. For IECEx this is not the case. For all zones under the IECEx scheme, manufacturer must obtain a test report (ExTR) and a Quality Assurance Report (QAR) which covers the standards used, and a certificate for the actual product (CoC - Certificate of Conformity).

Benefits of IECEx:

  • Reduced testing and certification costs to manufacturer
  • Reduced time to market
  • International confidence in the product assessment process
  • One international database listing

Scope of the IECEx scheme:
IEC 60079-0 Part 0: General requirements
IEC 60079-1 Part 1: Flameproof enclosures 'd'
IEC 60079-2 Part 2: Pressurized enclosures 'p'
IEC 60079-5 Part 5: Powder filling 'q'
IEC 60079-6 Part 6: Oil-immersion 'o'
IEC 60079-7 Part 7: Increased safety 'e'
IEC 60079-11 Part 11: Intrinsic safety 'i'
IEC 60079-15 Part 15: Construction, test and marking of type of protection 'n' electrical apparatus
IEC 60079-18 Part 18: Part 18: Equipment protection by encapsulation "m"
IEC 60079-25 Part 25: Intrinsically safe systems
IEC 60079-26 Part 26: Construction, test and marking of Group II Zone 0 electrical apparatus
IEC 60079-28 Part 28: Protection of equipment and transmission systems using optical radiation (scope covers “op is” and “op sh”)
IEC 60079-27 Part 27: Fieldbus intrinsically safe concept (FISCO) and Fieldbus non-incendive concept (FNICO)

IEC 60079-30-1 Part 30-1: Electrical resistance trace heating - General and testing requirements
IEC 60079-31 Part 31: Equipment dust ignition protection by enclosure 't'
IEC 61241-0 Part 0: General requirements
IEC 61241-1 Part 1: Protection by enclosures 'tD'
IEC 61241-4 Part 4: Type of protection 'pD'
IEC 61241-11 Part 11: Protection by intrinsic safety 'iD'
IEC 61241-18 Part 18: Protection by encapsulation “mD” electrical apparatus
IEC 62013-1 Caplights for use in mines susceptible to firedamp - Part 1: General requirements - Construction and testing in relation to the risk of explosion
IEC 62086-1 Electrical apparatus for explosive gas atmospheres – Electrical resistance trace heating – Part 1: General and testing requirements


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