It is critical that personnel working in areas involving explosive atmospheres have the knowledge and competency necessary to correctly and safely perform Ex activities such as classification, design, installation, maintenance, inspection and repair, in accordance with the following IEC Ex standards:

  • IEC 60079-10-1, Explosive atmospheres – Part 10-1: Classification of areas – Explosive gas atmospheres
  • IEC 60079-10-2, Explosive atmospheres – Part 10-2: Classification of areas – Combustible dust atmospheres
  • IEC 60079-14, Explosive atmospheres – Part 14: Electrical installations design, selection and erection
  • IEC 60079-17, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance
  • IEC 60079-19, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation

The IECEx Certification of Personnel Competencies (CoPC) addresses the certification of personnel competence involved in activities such as:

  • Applying the basic principles of protection in explosive atmospheres (Unit Ex 001)
  • Performing classification of hazardous areas (Unit Ex 002)
  • Installing explosion-protected equipment and wiring systems (Unit Ex 003)
  • Maintaining equipment in explosive atmospheres (Unit Ex 004)
  • Overhauling and repairing explosion-protected equipment (Unit Ex 005)
  • Testing electrical installations in or associated with explosive atmospheres (Unit Ex 006)
  • Performing visual and close inspection of electrical installations in or associated with explosive atmospheres (Unit Ex 007)
  • Performing detailed inspection of electrical installations in or associated with explosive atmospheres (Unit Ex 008)
  • Designing electrical installations in or associated with explosive atmospheres (Unit Ex 009)
  • Performing audit inspection of electrical installations in or associated with explosive atmospheres (Unit Ex 010)

The CompEx Scheme currently consists of 12 knowledge and assessment units. These units can be studied individually or as complementary pairs, as described below:

  • Preparation and installation of Ex ‘d,’ ‘n,’ ‘e’ and ‘p’ electrical equipment in explosive atmospheres (Ex01)
  • Inspection and maintenance of Ex ‘d,’ ‘n,’ ‘e’ and ‘p’ electrical equipment in explosive atmospheres (Ex02)
  • Preparation and installation of Ex ‘i’ equipment and systems in explosive atmospheres (Ex03)
  • Inspection and maintenance of Ex ‘i’ equipment and systems in explosive atmospheres (Ex04)
  • Preparation and installation of electrical equipment protected by enclosure, for use in Explosive Dust Atmospheres (Ex05)
  • Maintenance and inspection of electrical equipment protected by enclosure, for use in Explosive Dust Atmospheres (Ex06)
  • Preparation, installation and de-commissioning of electrical installations at Fuel Filling stations (Ex07)
  • Inspection, test and maintenance of electrical installations at Fuel Filling stations (Ex08)
  • Preparation and installation of electrical equipment in explosive atmospheres within the water industry (Ex09)
  • Inspection, test and maintenance of electrical equipment in explosive atmospheres within the water industry (Ex10)
  • Competency requirements for EN 13463 Parts 1, 5 and 6 for operatives working with mechanical equipment (Ex11)
  • Competency requirements of IEC60079-14 for Designers involved in design and selection (Ex12)

In addition, under the CompEx Scheme, there are Ex Foundation Courses (Ex F) and Refresher Courses (EX01R – EX04R and EX07R – EX08R)

These Schemes are not to be applied to personnel who are:

  • Involved in the design or manufacture of product where the output of their work is verified through test, assessment or equipment certification.
  • Involved with testing and certification bodies where their competence is verified through the accreditation of a test laboratory or a certifying body.

Furthermore, these Schemes deal only with assessment for certification of personnel, and do not cover training that may help develop personnel competency.

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