Maintenance & Inspection of Hazardous Area Equipment
(IECEx Unit Ex 001, Ex 004, Ex 007 & Ex 008)

POA

3 Days

9AM-5PM

Course Overview

This course is aligned with the requirements of IECEx OD 504 and is designed to provide an understanding on the principles of protection and the maintenance and inspection of electrical installations in or associated with explosive atmospheres based on the requirements of IEC 60079-14, IEC 60079-17 and other relevant standards of the IEC 60079 series.

There are no prerequisites for attending this course but a minimum of three years’ experience in industrial electrical installation and maintenance practice is recommended.

IECEx Units Covered:

Unit Ex 001 –   Principles of protection in explosive atmospheres knowledge

Unit Ex 004 –   Maintain equipment in explosive atmospheres

Unit Ex 007 –   Perform visual and close inspection of electrical installations in or associated with explosive atmospheres

Unit Ex 008 –   Perform detailed inspection of electrical installations in or associated with explosive atmospheres

Course Content

  • Explosive atmospheres and explosion-protection principles
  • Explosion-protected equipment – Ex certification schemes
  • Explosion-protected equipment – Principles
  • Explosion-protection visual checks
  • Type of protection – Flameproof enclosures “d”
  • Type of protection – Increased safety “e”
  • Type of protection “n”
  • Type of protection – Encapsulation “m”
  • Type of protection – Liquid immersion “o”
  • Type of protection – Powder filling “q”
  • Type of protection – Intrinsic safety “i”
  • Type of protection – Protection by enclosure “t”
  • Equipment protection by pressurized room “p” and artificially ventilated room “v”
  • Common characteristics of explosion-protection techniques
  • Explosive atmospheres installation requirements
  • Explosive atmospheres cable termination techniques
  • Explosive atmospheres maintenance requirements
  • Explosive atmospheres visual and close inspection requirements
  • Explosive atmospheres detailed inspection techniques

Target Audience

Personnel involved in the maintenance and inspection of electrical equipment and wiring systems in explosive atmospheres

FAQ Question 1

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Course dates are
available on request.

Additional Information

Header Column #2
VenueVarious Locations
Duration3 Days
LunchIncluded
Min/Max Delegates4/12
Special Requirements

PPE

Certification

IECEx Record of Training will be provided, Valid for 3 years.

EXCELLENT
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Based on 38 reviews
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michael casson
11 March 2026
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Great presentation by the instructors and prep for Compex 01 - 04 examination. Highly recommended
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Viaceslav Gaiducenia
12 January 2026
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I did compex 01-04. English is not my first language. I got extra support, a bit of extra explonation, extra advice. All of this was super helpful. The instructors were very knowlagable, passionate and well tempered. I failed one of the units but I passed it second time.
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Cameron Bowyer
18 November 2025
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I had an excellent experience training with EPIT Aberdeen. The instructors were incredibly knowledgeable, professional, and clearly passionate about what they do. The facilities and equipment are top-quality, and the training was delivered in a way that was both practical and engaging. Everything was explained thoroughly, with real-world examples that made the content easy to understand and apply. The staff were friendly and supportive throughout, creating a really positive learning environment. I left feeling confident, well-prepared, and genuinely impressed with the standard of training. Highly recommend EPIT Aberdeen to anyone looking for high-quality, industry-leading courses.
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Shawn Clark
12 September 2025
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Done the CompEx Ex01-Ex04 with Mike and Dodd, and they were both excellent! They both broke things down and made them easier to understand, as well as being genuinely good people who you can have a normal conversation and laugh with!
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John Soutar
11 June 2025
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An absolutely brilliant training and test facility that made the dreaded "Compex Refresher" course, a far more enjoyable and beneficial experience. From the great training material to the very knowledgeable instructors, it all helped to teach us about the new practices and standards in Compex and I certainly left knowing more than I did when I walk through the door Monday morning. Thanks to the all staff! 5*
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Quinn MacDonald
30 April 2025
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Excellent facilities and the instructors were brilliant at teaching you the course materials along with real world advice and practices
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Andrei Lerca
4 March 2025
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Great training center powered by passionate people and a very beautiful reception.
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james Lombardo
27 November 2024
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Most reliable and Very professional
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Alistair Strachan (Ally)
17 September 2024
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Been here twice, superb facilities and certainly the best out of the 3 different venues I've attended for compex.

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Terms & Conditions
  • You are agreeing to pay all fees and expenses associated with the selected course.
  • Payment is required before commencement of the course.
  • The course fee includes refreshments, lunch and course material.
  • Failure to attend without prior cancellation will result in the loss of the fee.
  • Results will not be issued until payment has been received.
Cancellation Charges
  • 15 working days or less prior to the course start date, 100% cancellation charge will apply.
  • 16-20 working days prior to the course start date, 50% cancellation charge will apply.
  • 21-25 working days prior to the course start date, 25% cancellation charge will apply.

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CompEx Entry Requirements Guidance

Gases & Vapours (EX01 – Ex04)

Electrical / Instrument Craftpersons & Engineers Install, Inspect & Maintain: Gas & Vapours

Header Column #1
IndustriesPrincipal to all Ex environments, with direct application in hazardous vapour and gas environments.
Entry Qualifications
Guidance
Level 3, ECS Gold Card, National Diploma or equivalent. Disipline:
  • Electrotechnical
  • Instrumentation
Subject to knowledge, skill and experience candidates may benefit from Ex F+
Entry Knowledge - Expected
  • Knows the relevant legislative, regulatory, local requirements
  • Understands procedures for safe working practice and systems of work in an industrial setting
  • Can read and interpret relevant engineering drawings, related specifications, quality standards and equipment manuals
  • Understands the hierarchy of responsibilities in relation to reporting and decision-making
Entry Skills - Expected
  • Practical skills in engineering assembly of a complexity consistent with that of a level 3 craftsperson
  • Can apply safe working practices including safe isolation to meet the requirements of statutory and non-statutory regulations
  • Can safely install, inspect, test, commission, diagnose and correct faults in electrical plant, instrumentation, associated cabling, cabling supports and equipment
  • Can select, gland & terminate industrial type cables to a suitable component and associated cable tray in line with details on the appropriate specification
  • Can interpret manufacturers documentation for correct installation,maintenance and inspection
Job Roles
Aspiring to or operating in
  • Installation or Maintenance Electrician
  • Electrical or Instrument Technician
  • Engineers
Entry Experience
Guidance
  • 2 + years' experience operating in a site / industrial environment
  • Installing, inspecting, testing and/or maintaining equipment in an industrial setting
Entry Knowledge - Desirable
  • Understands the need for and methods of achieving safe working practice in gas and vapour Ex environments
  • Has basic practical, theoretical and technological knowledge and understanding of gas and vapour Ex environments
  • Has a basic understanding of the requirements, materials and equipment considerations, in relation to working in gas and vapour Ex environments
Entry Skills - Desirable
  • Can select and install a variety of Ex certified cables glands and terminate conductors into equipment
  • Can understand the principles of electrical protection concepts including selection, installation and maintenance
  • Understands intrinsically safe concept of protection and installation including the importance of documentation
  • Can inspect new and existing equipment in accordance with appropriate inspection techniques relevant to the different grades of inspection

CompEx Entry Requirements Guidance

Gases & Vapours (EX01 – Ex04)

Electrical / Instrument Craftpersons & Engineers Install, Inspect & Maintain: Gas & Vapours

Header Column #1
IndustriesPrincipal to all Ex environments, with direct application in hazardous vapour and gas environments.
Entry Qualifications
Guidance
Level 3, ECS Gold Card, National Diploma or equivalent. Disipline:
  • Electrotechnical
  • Instrumentation
Subject to knowledge, skill and experience candidates may benefit from Ex F+
Entry Knowledge - Expected
  • Knows the relevant legislative, regulatory, local requirements
  • Understands procedures for safe working practice and systems of work in an industrial setting
  • Can read and interpret relevant engineering drawings, related specifications, quality standards and equipment manuals
  • Understands the hierarchy of responsibilities in relation to reporting and decision-making
Entry Skills - Expected
  • Practical skills in engineering assembly of a complexity consistent with that of a level 3 craftsperson
  • Can apply safe working practices including safe isolation to meet the requirements of statutory and non-statutory regulations
  • Can safely install, inspect, test, commission, diagnose and correct faults in electrical plant, instrumentation, associated cabling, cabling supports and equipment
  • Can select, gland & terminate industrial type cables to a suitable component and associated cable tray in line with details on the appropriate specification
  • Can interpret manufacturers documentation for correct installation,maintenance and inspection
Job Roles
Aspiring to or operating in
  • Installation or Maintenance Electrician
  • Electrical or Instrument Technician
  • Engineers
Entry Experience
Guidance
  • 2 + years' experience operating in a site / industrial environment
  • Installing, inspecting, testing and/or maintaining equipment in an industrial setting
Entry Knowledge - Desirable
  • Understands the need for and methods of achieving safe working practice in gas and vapour Ex environments
  • Has basic practical, theoretical and technological knowledge and understanding of gas and vapour Ex environments
  • Has a basic understanding of the requirements, materials and equipment considerations, in relation to working in gas and vapour Ex environments
Entry Skills - Desirable
  • Can select and install a variety of Ex certified cables glands and terminate conductors into equipment
  • Can understand the principles of electrical protection concepts including selection, installation and maintenance
  • Understands intrinsically safe concept of protection and installation including the importance of documentation
  • Can inspect new and existing equipment in accordance with appropriate inspection techniques relevant to the different grades of inspection