IEC/ISO marking of mechanical equipment

Ex equipment carries a marking plate that includes details about the surroundings and external influences the equipment has been certified for. Can you interpret the codes?

The most engaging eLearning available. Straight to your PC, phone or tablet.
Estimated duration
35 minutes
How long time the course normally takes to complete.
Spoken language in the course. Subtitles could be available in multiple languages.
Who has produced and is responsible for the content of the course.


Having completed this course, participants will know how mechanical Ex equipment is marked, and what the different markings mean. Participants will learn to distinguish between the different types of markings and how to make good decisions when selecting equipment to use in an installation in a potentially hazardous area.

Target group

Personnel working with installing and maintenance of mechanical equipment and other personnel planning or working on installations in potentially hazardous areas outside of the EU/EEA. The course will also be useful for manufacturers and suppliers of Ex equipment outside of the EU/EEA.

Subjects covered in the course

  • How to read a marking plate
  • Protection type for mechanical equipment
  • Markings following the ISO standard
  • Brief introduction to additional markings following the ATEX directive
  • Certificate number
  • Brief introduction to marking electrical equipment
  • Marking associated equipment and associated apparatus
  • Assemblies


For people who works non-EU/EEA/UK - seagoing ships: The course is based on marking of Ex-equipment described in the ISO-standards (80079-36) for Non-electrical equipment for explosive atmospheres, and will contribute in documenting competence.

Technical information

System requirements

This course can be run on a computer, tablet and smart phone. For handheld devices we recommend a stable Wi-fi connection. Flash is not required for this course.

Recommended minimum connection speed is 1.5 Mbps. If you experience problems while running the course, we recommend using the Google Chrome browser.

Course manual

No, this course does not include a course manual.

Related courses
Download Trainor app

You can complete eLearning courses from a mobile or tablet on the Trainor App. The free app can be used without an internet connection, offering flexibility in where and when learning takes place.

Trainor App