CompEx Ex12 Design Engineer Course

The Ex12 Design Engineer Course delivers in-depth competence based training and assessment in the application, design and selection of electrical equipment with the requirements of IEC 60079-14. This will relate to the electrical installation, design, selection and erection in areas of explosive atmospheres. On completion of the assessments they are sent to the Awarding Body JTL for marking, and if successful the candidates shall be issued with a certificate of core competence by JTL and EEMUA.

Ex12 Design Engineer Course Syllabus

  • Legislation
  • Standards and Certification Process EN / IEC Ex
  • ATEX 94/9/EC – Equipment & Equipment Marking
  • Overview on Area Classifications
  • Ingress Protection
  • Explosive Atmospheres
  • Equipment Protection Levels
  • Detailed Design and Installation Practices (Electrical & I.S. Concepts) in Accordance with IEC 60079-14
  • Documentation
  • Review of Selection of Electrical and I.S. Equipment and Systems
  • Feedback and Review

CompEx is the national training and assessment scheme for electro technical crafts personnel who work in potentially explosive atmospheres, such as on-and off-shore Oil & Gas Pharmaceuticals, Energy, Chemical industries etc.

CompEx is a national joint training initiative developed and implemented by the Engineering Equipment and Material Users Association (EEMUA) and JTL and is supported by the Health and Safety Executive (HSE).

JTL who is the National training agent for the Electrical contracting industry has been appointed to develop, operate and manage the training provision across the UK and has licensed and accredited a number of centres to deliver the training and assessment.


Delegates for the course should be electrical or instrument engineers, including E&I Designers, Maintenance and Project Engineers etc.
Delegates are required to bring Photo Identification and suitable evidence that they are fully qualified in electrical or instrument fields, or both. This could be a letter from your employer or certification of your engineering qualifications.


The course is delivered in English, therefore candidates must have good standards of both written and verbal English.


Delegates will need to provide photographic identification as well as their National Insurance number on their first day of training. The following photographic identification is accepted: Passport, Driving Licence etc.


This course is JTL Approved and is conducted in accordance with their training standards. A JTL approved certificate will be awarded on successful completion of the examination.


Candidates doing the CompEx 12 Design Engineering Course.

I thought the course was very well delivered & wouldn’t hesitate to recommend it’ – August 2022

‘After a nervous couple of weeks my certificate has finally come through, thanks to all at C&P Engineering, especially Tal, for delivering a fantastic course despite the heatwave’.

Scott – August 2022

‘Superb course and very well delivered. Tal goes above and beyond using his Engineering skills and experience to make all course content relatable to the real world.’

Matthew Griffiths – December 2023


Hi Tal, thank you very much for your email and for letting me know my results. I am extremely pleased with the outcome, which would not be at all possible without your course and knowledge!

It was a tough course, probably one of the toughest I have sat in my career, but it does however make it that much more worthwhile to have passed.

I’d like to extend my thanks to you and the team for a seamless onboarding process and I look forward to attending other courses at C&P in the future and looking forward to seeing how your new facility develops, which I am sure will be to an excellent standard!

Jay Balena – January 2024

Please Note: Failure to report promptly each day may result in you missing vital elements of the course and will prevent you from receiving your certificate. As part of the training involves communication in hazardous situations, it is essential that all participants can read, speak and understand English fluently.

C&P Training Services Ltd is part of the group of companies owned by C&P Group Holdings Ltd

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