Gas and vapours (Ex01 – Ex04)

Gas and vapours (Ex01 – Ex04)

The CompEx Ex01-Ex04 Gas and vapours qualification has been developed for electrical and instrument technicians working in hazardous locations where gases or vapours can form explosive atmospheres.

Attendees

This qualification is suitable for practicing electrical or instrument technicians who are involved in installing, inspecting and maintaining certified Ex electrical equipment in locations where gases and vapours can potentially create a hazardous area.

Entry requirements

  • Practicing competent electrical technicians
  • Practicing competent instrument technicians
  • Electrical/instrument engineers with previous practical experience
  • Prior CompEx certification supported by employer sponsored letter.

Duration

Approximately 5 days, however; some international centres offer a 6-day course to further support candidates where English is not their first language.

Delivery

The 5-day course includes:

  • 3 days of guided learning (theoretical 15-20 hours, practical 4-6 hours)
  • 2 days of assessment

This course has been developed in consultation with industry to ensure the core competence of existing and potential workers who operate in these environments.

The qualification consists of four units, which cover the minimum requirements for safe working practices in hazardous locations.

Candidates will learn about the safety considerations that should be applied to work areas that contain potentially explosive or flammable atmospheres and the factors that are used to classify their location.

The course includes instruction on how to read hazardous area certification, labelling and documentation, and also informs candidates about the main protection concepts, categories and levels that are applied to certified Ex electrical equipment.

Successful candidates will demonstrate the knowledge and skills to meet the requirements highlighted in the IEC 60079 series of standards and the relevant national standards and directives. This qualification focuses on the minimum specifications identified in IEC60079:0, IEC60079:10.1, IEC60079:14 and IEC60079:17.

Key learning objectives

Candidates that successfully complete the Ex01-Ex04 qualification will be able to:

  • Identify the correct national regulations, directives, and IEC standards which relate to hazardous areas.
  • Demonstrate a basic knowledge of the main protection concepts, categories and protection levels that apply to equipment certified for use in hazardous areas.
  • Recognise the elements that make up a hazardous atmosphere and the precautions required.
  • Demonstrate an underpinning knowledge of how certified Ex electrical equipment including Ex ‘d’, ‘e’, ‘n’, ‘p’, ‘m’, ‘o’, ‘q’, ‘s’, Intrinsic Safety (IS) maintains its protection concept and how it is to be selected, installed, inspected and maintained.
  • Identify the correct test value readings for IS and non-IS installations and equipment.

Qualification details

Candidates who are successful in both the theory and practical assessments will receive a CompEx Certificate in Core Competence.

Assessment:

Assessment is undertaken using both practical assessments and an online examination that covers the four separate CompEx units.

Online exam

Candidates must undertake a multiple-choice online examination that consists of 60 questions answered over 1.5 hours.

Practical assessment:

Candidates are required to undertake four practical assessments (one per unit):
  • Ex01 – 3 hours 45 minutes
  • Ex02 – 1 hour 30 minutes
  • Ex03 – 3 hours
  • Ex04 – 1 hour 15 minutes

Candidates have been certified for CompEx 01 - 06 across all these Countries

Make an enquiry

If you would like to make an enquiry about the CompEx Scheme or require further information about any of our qualifications, please contact us by completing our enquiry form.

FAQ

CompEx certification is a globally recognized qualification for professionals working in explosive atmospheres. The Ex01–Ex04 modules specifically cover gas and vapour hazardous environments, training individuals in the safe installation, maintenance, and inspection of electrical and instrumentation equipment. For companies like Ex Certifications & Inspection Services, CompEx certification ensures that our technicians meet international safety standards, providing reliable and safe services in high-risk environments.

To obtain CompEx Ex01–Ex04 certification, individuals must complete an accredited course, followed by practical assessments. Ex Certifications & Inspection Services in the UAE offers comprehensive training in line with CompEx standards, providing professionals with the skills and knowledge required for working safely in explosive atmospheres. Our training programs ensure participants meet industry standards, qualifying them for work in hazardous locations.

CompEx Ex01–Ex04 covers four essential modules: Ex01 focuses on preparation and installation of Ex equipment; Ex02 covers the inspection and maintenance; Ex03 is for preparing and installing equipment for explosive vapour atmospheres; and Ex04 pertains to inspection and maintenance in these environments. Ex Certifications & Inspection Services provides in-depth training across these modules to ensure comprehensive, hands-on learning for professionals.

Hazardous location training equips electrical and instrument technicians with critical skills to prevent accidents in environments with explosive gases or vapours. Proper training reduces risks and ensures compliance with safety standards. Ex Certifications & Inspection Services emphasizes this training, preparing technicians to manage hazardous locations safely and effectively, which is crucial for high-risk industries such as oil and gas.

In explosive atmospheres, electrical technicians are responsible for the safe installation, maintenance, and inspection of Ex-certified equipment. They ensure all devices are compliant with safety standards and functioning safely. Ex Certifications & Inspection Services trains technicians to follow strict protocols, ensuring their readiness to handle Ex equipment and reduce potential hazards in environments with explosive gas or vapour.

Ex01–Ex04 certification is specifically designed for professionals working in gas and vapour hazardous areas, providing training in preparation, installation, inspection, and maintenance of Ex equipment. This certification helps prevent accidents by ensuring that technicians are fully qualified to handle explosive atmospheres. Ex Certifications & Inspection Services offers this certification, supporting industries in meeting international safety standards in these high-risk zones.

Ex equipment should be inspected and maintained periodically based on risk assessment and manufacturer recommendations. Regular inspections help identify potential hazards early and ensure compliance with safety standards. Ex Certifications & Inspection Services offers routine inspection and maintenance services for Ex equipment, ensuring it remains safe and operational, especially in high-risk gas and vapour zones.

In the UAE, Ex Certifications & Inspection Services provides CompEx Ex01–Ex04 training, offering courses tailored to meet the region’s high safety standards. Our training center is fully equipped to deliver both theoretical and practical modules, preparing professionals for work in explosive atmospheres. For those in India, various certified training centers also offer this essential training for safe handling of Ex equipment.

CompEx certification is valid for five years. Ex Certification & Inspection Services LLC offers refresher courses to renew certification, covering updated safety standards, regulations, and best practices. The refresher includes the latest techniques in risk assessment and equipment maintenance, ensuring certified professionals are up-to-date in explosive atmospheres.

Ex Certification & Inspection Services LLC is an accredited CompEx training center staffed by experienced instructors familiar with industry standards. We have a strong track record of certification success and hands-on facilities that provide practical learning experiences. For trusted CompEx training, our center ensures you receive the best preparation for handling hazardous environments.

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