CompEx Modules EX01 To EX04 For Gas And Vapour Environments Course
Key Features
Of this CompEx Modules EX01 To EX04 Course:
- Covers the full scope of CompEx EX01 to EX04 for installation, inspection and maintenance of electrical equipment in gas and vapour explosive atmospheres
- Aligns with IEC 60079 standards and UK hazardous area regulations for safe working in Zones 0, 1 and 2
- Combines theoretical knowledge with extensive hands-on practical assessments using real Ex certified equipment
- Recognised by employers and contractors across oil and gas, petrochemical, pharmaceutical and energy sectors
- Provides delegates with the competence required to sign off electrical work in classified hazardous areas
Course Date Availability
CompEx Modules EX01 To EX04 training at the following 12 centres. Prices from £0 per person :
| Training Centres | Next Available Dates |
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Course Information
Overview:
CompEx Modules EX01 to EX04 provide the recognised qualification for electrical and instrumentation personnel who install, inspect and maintain equipment in gas and vapour explosive atmospheres. The course addresses the complete requirements for both flameproof, increased safety and intrinsically safe protection concepts used throughout UK process industries. Delegates develop the skills to interpret area classification drawings, select appropriate Ex equipment, apply correct installation techniques and carry out detailed inspections that satisfy current IEC 60079 standards. The training is delivered through a structured programme of classroom theory sessions followed by workshop-based practical exercises that replicate real site conditions.
Who Should Attend?
This course is designed for:
- Electricians and electrical technicians working in hazardous area environments
- Instrument technicians responsible for maintaining Ex rated instrumentation
- Supervisors and engineers who sign off installation and inspection work
- Maintenance personnel carrying out periodic inspections in gas and vapour zones
- Contractors undertaking electrical installation projects on process plants
What You Will Learn
By the end of the course you will be able to:
- How to interpret hazardous area classification drawings and select suitable protection concepts
- Correct techniques for installing Ex d, Ex e, Ex n and Ex p equipment including cable glands and sealing
- Detailed inspection procedures for visual, close and detailed inspections to IEC 60079-17
- Installation and inspection requirements specific to intrinsically safe (Ex i) systems and barriers
- Documentation, marking and verification processes required for compliance
- Safe isolation, fault finding and maintenance practices within explosive gas atmospheres
Course Agenda
Overview:
The course runs over five consecutive days and combines classroom-based theory with extensive practical workshop sessions. Each module includes formal assessments comprising multiple-choice examinations and observed practical tasks using representative Ex equipment.
Key Modules Covered
What you will learn:
- EX01 – Preparation and Installation of Ex d, Ex e, Ex n and Ex p Equipment
- EX02 – Inspection and Maintenance of Ex d, Ex e, Ex n and Ex p Equipment
- EX03 – Preparation and Installation of Ex i Equipment
- EX04 – Inspection and Maintenance of Ex i Equipment
Private Courses On-site
CompEx Modules EX01 To EX04 For Gas And Vapour Environments training is also available as a dedicated course, at your premises, and on a date and time of your choosing. Advantages of group / private course is the convenience of candidates being in familiar surroundings and not having to travel, the lowest price, and the ability to have the course tailored to your own application.
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Accreditation & Next Steps
What you will achieve as a result:
Successful delegates receive a CompEx certificate of competence for Modules EX01 to EX04, valid for five years. The certificate is recorded on the CompEx database and is accepted by major operators and contractors across the UK process industries. Refresher training and reassessment are required before expiry to maintain validity.
Frequently Asked Questions
Most commonly asked CompEx Modules EX01 To EX04 For Gas And Vapour Environments questions:
The standard programme runs for five consecutive days, including theory sessions, practical workshops and formal assessments.
Delegates should hold a recognised electrical or instrumentation qualification and have practical experience of working with industrial electrical systems.
The modules address hazardous area classification, protection concepts Ex d, Ex e, Ex n, Ex p and Ex i, correct installation methods, inspection regimes to IEC 60079-17, documentation and maintenance practices.
Assessment includes written multiple-choice papers for each module plus observed practical tasks where delegates install, inspect and document work on representative Ex equipment.
Delegates who pass all assessments receive an official CompEx certificate for Modules EX01 to EX04, valid for five years and recorded on the national CompEx database.
The certificate remains valid for five years. Refresher training and reassessment are required before the expiry date to maintain competence and certification.
EX01 to EX04 focus exclusively on gas and vapour environments. EX05 and EX06 cover combustible dust atmospheres and require separate training.
Delegates should bring valid photographic ID, their own PPE including safety footwear, and any site-specific permit or isolation procedures they commonly use.
Yes. The CompEx certificate demonstrates the competence required by most UK operators and contractors for work in gas and vapour hazardous areas.
Practical sessions use a wide range of certified Ex d, Ex e, Ex n, Ex p and Ex i equipment including junction boxes, motors, luminaires, sensors and intrinsically safe loops.
While not mandatory, previous site experience helps delegates relate the theory and practical tasks to real workplace situations.
The course is based on current editions of IEC 60079 series standards, including IEC 60079-14 for installation and IEC 60079-17 for inspection and maintenance.
Prices per person typically start at £0. Discounts available for multi person or group bookings (depending upon location)
More Information
This qualification remains the industry benchmark for demonstrating competence when working with electrical installations in gas and vapour hazardous areas. It equips personnel with the practical skills and theoretical understanding needed to carry out work safely and in full compliance with current regulations.
Last updated: Jun 2026 • Part of XYZ Training Group