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ATEX Level 1
Mechanical and electrical course

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 2.5 days (online delivery format) 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 recognized by the EU.

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

Two and a half-day. Usually, this course is 2 days, but due to the current constraints, INERIS is requesting that this course happen Online in 2.5 days.

The course will be delivered in a live-online format, in accordance with INERIS guidelines for remote delivery during the COVID-19 pandemic outbreak. 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.

If interested in the course but the proposed dates do not suit your schedule and would like to be enrolled on a waiting list, or if you would like a dedicated session for your team (on-demand), please get in contact at

Price: €1200 + €60 (certificate from INERIS) (not including VAT)

  • 24-26 June 2020 (French/Dutch delivery, depending on audience) – Online
  • 13-15 July 2020 (English Delivery) – Online

*Please note that the mentioned dates are subject to change if the required number of participants is not met.


Héloïse Gennart has worked for more than 10 years in risk management, more specifically on the explosion risk. She is experienced in risk analysis, has prepared Explosion Protection Documents, and has carried out safety audits on existing installations. For several years, as part of ATEX studies, Héloïse has audited and adapted working procedures for lead-acid battery installations. Her expertise has extended to lithium-ion batteries and developing safety guidelines for energy storage systems.

Want to attend this technical training?

Bring your own cases and get answers to your questions

You are most welcome to ask questions during the training and bring specific cases for discussion.  Questions can be asked in English, French or Dutch.

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