CompEx Ex11 Mechanical
We are pleased to announce that Cenelec Standards Inspections Ltd will be launching a new CompEx Ex11 Mechanical Training Centre in January 2026. The build is underway, and we will be taking bookings from September 2025.
If you would like to register your interest in the CompEx Ex11 courses we will be running (or any of our other courses) please follow this link and register your interest:
https://forms.gle/ofAdu6c6PtcuUPH6A About CompEx Module Ex11
The Ex11 qualification is suitable for practicing mechanical operatives who are involved in installing, inspecting and maintaining non-electrical (mechanical) equipment in locations where gases, vapours and/or dusts can potentially create a hazardous area.
CompEx Ex11 is a three-day course, and assessment is undertaken using both practical elements and an online multiple-choice examination.
The online exam consists of 60 questions answered over 1.5 hours, covering CompEx units ExF and Ex11, while the two practical assessments consist of:
- Ex11 – Flange Integrity Installation and leak test – 60 minutes
- Ex11 – Pumpset inspections (visual and detailed) – 60 minutes
Key Learning Objectives
Candidates that successfully complete the Ex11 Mechanical qualification will be able to:
- Identify the correct national regulations, directives and IEC/ISO standards which are applicable to hazardous locations containing non-electrical (mechanical) equipment.
- Identify the correct criteria and descriptors used to classify a hazardous location.
- Recognise the correct characteristics of common hazardous gases, vapours and dusts discussed during the course.
- Demonstrate an understanding of the basic method and requirements for non-electrical equipment for hazardous locations (constructional safety ‘c’, control of ignition source ‘b’ and liquid immersion ‘k’)
- Demonstrate an understanding of how certified Ex non-electrical equipment maintains its protection concept and how it is to be selected, installed, inspected and maintained.
- Demonstrate an understanding of how certified Ex electrical equipment maintains its protection concept and how it is to be selected, installed, inspected and maintained
- Demonstrate an understanding of required correct equipment selection, e.g. flange, gaskets, bolts and use of current industry flange installation practices.
- Demonstrate an understanding of leak testing requirements of installed flange arrangements