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ATEX Level 1: mechanical and electrical course

1,310.00 excl. VAT

Planned Course Data

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2 days (8h/day); 9AM-5PM CET



At an industrial site where an explosive atmosphere (ATEX) could occur, the operator is responsible for ensuring worker safety. This includes not only adapting the site’s design to reduce risks, but also installing ATEX equipment and removing potential ignition sources. Unfortunately, no matter how good the design is, inadequate installation or maintenance can alter ATEX equipment characteristics, and lack of knowledge on the part of the personnel involved can lead to hazardous conditions. To assure safety, it is essential for everyone to respect the specific rules relating to ATEX zones and that maintenance and installation conform to ATEX standards. To achieve this, every worker must undergo job-specific training. Our training courses are certified ISM-ATEX by INERIS and are aimed at those engaged in installation design, as well as maintenance staff, operators and supervisors.

The one-day level 1 training is particularly suitable for people who work on ATEX equipment, whether from an electrical or mechanical point of view. The trainer explains, among other things, the regulations, points to be checked and the steps to be followed for the ATEX to maintain its level of protection.


  • The explosion risk and general issues concerning explosive atmospheres (legal obligations, what is an explosion, examples of explosions, etc.)
  • Important parameters concerning fires and explosions: LEL, UEL, MIE, Kst, Kg, Pmax; understanding why some gases are more dangerous than others
  • Ignition sources and ignition mechanisms: friction, static electricity, impacts, overheating, self-heating
  • Safety of installations and workers: European directive 1999/92/EC, zoning (what are the different zones and what can I do in each zone?)
  • Design of ATEX equipment: European directive 2014/34/EU, equipment marking (how to read it), documents related to the directive (explosion protection document, risk analysis, EU type certification)
  • Overview of the protection modes of ATEX equipment:
    What do I need to know? What is the difference between ATEX
    and non-ATEX equipment? Is it all built in the same way?
    How do intrinsic safety and flameproof enclosures work?
  • Installation and maintenance rules of ATEX devices according to their protection mode
  • ATEX zone intervention rules: general rules, tools, adapted clothes, work permit
  • Maintenance rules regarding seals, bearings, screws, cables, electrical connections, cable glands (is it sufficient to have an ATEX cable gland?), etc.
  • The main goal is to ensure that ATEX devices keep all their features even after maintenance or installation
  • Questionnaire at the end of the session to obtain the ISM-ATEX certificate

Level 1 training is formulated by INERIS and recognised by the EU.

Target Audience

All persons working with ATEX equipment, supervised by personnel trained to level 2, or for operational use.

Practical Info

Please note that the course will only take place if the minimum number of participants is acquired.

If you would like a dedicated session for your team, or if you want information on the possible dates for this course, please get in contact at

The course will be delivered only in a CLASSROOM format. At the end of the session, all participants will be tested in accordance with INERIS standard in order to be awarded with ISM-ATEX Level 1 certificate. Participants will be receiving the course presentation, Laborelec Academy issued attendance diploma and INERIS issued ISM-ATEX certificate.

The specified price of the course contains also the costs associated with the issuing of the INERIS ISM-ATEX Level 1 certificate.

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