EX11: Mechanical and Flange Integrity

Course Overview

3 days
Price upon request
Open Courses:

7th February 2024
20th March 2024
10th July 2024
6th November 2024
Bologna or on client location (groups only)
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Target Audience

CompEx Ex11 has been created for mechanical engineers and fitters to gain a qualification in explosion safety to International Standards.  CompEx EX11 is suitable for all personnel who may be required to break and isolate pipes to install or maintain Ex equipment such as pumps etc., and personal who may need to select, install or maintain Ex non-electrical equipment.

Course Overview

The course is designed to satisfy both the ATEX (European) and International (IEC) requirements.  These standards require users to identify all possible ignition sources that could arise in hazardous areas. The identification of these ignition sources includes non-electrical (mechanical) items of equipment, covered in the EX11, as well as  the electrical equipment covered by Ex01-04. The course covers the safety measures for non-electrical equipment used in hazardous areas, including safe selection, installation, maintenance, inspection and repair of the equipment.

Topics Covered

  • Hazardous areas overview
  • Ignition sources of gas and dust
  • Introduction to Area classification
  • Categories, EPLs & Marking
  • Equipment for use in hazardous areas
  • Repairs & Modifications
  • Requirements for ATEX and IECEx non-electrical equipment and assemblies
  • EN1127-1 and identifying ignition hazards
  • Failure examples for ATEX and IECEx Non-Electrical
  • Performing ignition risk assessments (worked examples)
  • ISO 80079-36/37 overview and the relationship with IEC60079-0 (Ex h)
  • Concepts Ex d, p, c, k. b
  • Selection and use of gaskets, flanges, bolts and pipe integrity


Delivery will be a combination of classroom tuition / and practical in the workshop.

Competence is assessed through:

  • 90-minute exam (multiple choice)
  • 90-minute exam on a close and detailed inspection on a mechanical pump rig (use of tools/locking out/fault identification assessment)
  • 30-minute flange integrity practical.  Selection and fitting of appropriate gaskets, bolts and flange blanks, pressure testing and safe removal.

Safety boots/shoes will be required, all other protective equipment and tools are provided