Program Overview
This program is structured around the four core units of gas and vapor Ex competency. It is designed for experienced electrical and instrument craftspeople who must demonstrate, not just describe, correct practice on equipment located in explosive gas atmospheres.
Ex01 and Ex02 address the preparation, installation, maintenance and inspection of flameproof, increased safety, type n and pressurized equipment. Ex03 and Ex04 focus on intrinsically safe apparatus and systems, including barriers, isolators, entity parameters and loop verification. Throughout, work is referenced to IEC 60079-14 and IEC 60079-17, with retail fuel and filling station applications discussed using the APEA/EI guidance. The emphasis is on practical tasks completed to standard under assessment conditions. Each unit combines short technical briefings with substantial practical time, and participants are expected to arrive with prior E&I field experience. Common noncompliances found during site audits, such as missing stopping plugs, incorrect gland selection, damaged flamepaths and undocumented IS loops, are used as teaching cases.
Learning Outcomes
- Prepare and install Ex d, Ex e, Ex n and Ex p equipment, including gland selection and termination
- Inspect and maintain Ex d, Ex e, Ex n and Ex p equipment and identify noncompliances
- Install intrinsically safe apparatus, associated apparatus and interconnecting cables
- Verify intrinsically safe loops using entity parameters and system descriptive documents
- Inspect and maintain Ex i systems and document findings to IEC 60079-17
- Apply safe isolation and gas-free certification before work on Ex equipment
Program Modules
- Ex01: Preparation and Installation of Ex d, Ex n, Ex e and Ex p Equipment — selection, glanding, flamepath care and enclosure assembly
- Ex02: Maintenance and Inspection of Ex d, Ex n, Ex e and Ex p Equipment — inspection grades, defect recognition and corrective maintenance
- Ex03: Preparation and Installation of Ex i Equipment and Systems — barriers, galvanic isolators, segregation and IS earthing
- Ex04: Maintenance and Inspection of Ex i Equipment and Systems — loop verification, entity parameter checks and IS documentation
Who Should Attend
- Electrical and instrument technicians in oil, gas and chemical plants
- Ex maintenance technicians and supervisors
- Contractors working on fuel terminals and filling stations
- Offshore and onshore E&I craftspeople
- Inspectors requiring practical Ex competence
Standards & Codes Referenced
- IEC 60079-14 (Electrical installations design, selection and erection)
- IEC 60079-17 (Electrical installations inspection and maintenance)
- APEA/EI Design, Construction, Modification, Maintenance and Decommissioning of Filling Stations (Blue Book)
Assessment & Certification
Competence is confirmed through a written examination for each of the four units, covering protection concepts, standards and inspection requirements and a practical assessment for each unit on dedicated Ex d, Ex e, Ex n, Ex p and Ex i rigs. Practical sessions take place at ASEEE-approved training centers under the supervision of a qualified assessor. Each unit is assessed separately, so candidates can see their competence profile unit by unit.
Successful candidates receive the ASEEE competency certificate, which carries a unique ID that employers and clients can verify online through Certificate Check. Recertification is recommended every 5 years.
