What is the CompEx Scheme?

The CompEx Scheme is the recognised global scheme for the protection of oil, gas, chemical & pharmaceutical workers in both offshore and onshore activities, in fact anywhere that explosive atmospheres exist, the CompEx Scheme can provide competency validation of individuals across a range of disciplines and different hazards to help create a safer workplace. The scheme assesses the competency of employees and contract staff who are working in environments with the potential risk of explosive atmospheres.

Originally developed by the Engineering Equipment and Materials Users’ Association (EEMUA) and JT Limited along with key industry stakeholders, JT Limited now own and operate the CompEx Scheme as the CompEx Certification Body and is internationally accredited by UKAS to ISO/IEC 17024 : 2012 Conformity Assessment - General Requirements for bodies offering Certification of Persons (See Accreditation).




CompEx is the only Certification Body that offers UKAS accredited certification for personnel who work in explosive atmospheres. This certification validates the core competency of practitioners working in explosive atmospheres. It also offers complete reassurance to employers managing the safety of these potentially hazardous workplaces and can provide the added benefit by assisting employers reduce their insurance costs.


Our success

Since its inception, CompEx has certificated over 64,000 candidates in the Gas & Vapour modules and thousands more in the Dust, Fuel, Water, Mechanical modules and more recently in the Application Design Engineer and Responsible Persons Modules. This has had a direct impact on improved safety in the workplace and a dramatic reduction in injuries caused by dust clouds and explosive blasts.


An overview from Martin Jones - Head of Global Operations  


About the Course

The course includes specific knowledge and practical assessments based upon the IEC 60079 Parts 14 & 17 standards. Upon successful completion, candidates receive a CompEx Certificate of Core Competency for the modules in which they have achieved the required standard. Each certificate is valid for a period of 5 years, depending on changes to International, European and British Standards.


 Pre-Course Information

The CompEx Courses benefit from the practical interpretation of the IEC 60079 Part 14 & 17 Standards provided in EEMUA Publication No 186 'A Practitioner's Handbook for potentially explosive atmospheres' available to order from your CompEx Centre or directly from sales@eemua.org details of which are on EEMUA's website https://www.eemua.org/Products/Publications/Print/EEMUA-Publication-186.aspx


CompEx Centres

There is an international network of licensed CompEx centres around the world that develop candidates’ knowledge and provide a robust assessment programme in line with CompEx standards. This network ensures that there is always a centre within reach. See our Centres page for more details about each centre by selecting them on the interactive map. 





JT Limited understands the importance of impartiality and potential conflicts of interests in carrying out its certification activities. JT Limited’s full Statement of Impartiality can be found here.

Latest News   View All


Coronavirus (Covid-19) Update

Jul 01, 2020

Please see the CompEx Certification Body's updated position relating to the challenges brought about by the Coronavirus (Covid-19) health concern.

Working & Learning Safely

Jun 16, 2020

Wellbeing is our number one priority and we've brought in additional health and safety measures to keep our staff, learners and visitors as comfortable as possible.


Jun 09, 2020

Phil Gooderham, an E&I Training Consultant and CompEx Training Programme Manager at TTE Training Limited, Ellesmere Port, Cheshire sadly passed away on May 28th 2020.