| Assessment Unit No. | Unit Name | Prerequisite |
| Unit 001 | Apply basic principles of protection in explosive atmospheres | – |
| Unit 004 | Maintain equipment in explosive atmospheres | Unit Ex 001 |
| Unit 007 & 008 | Perform visual close and detailed inspection of electrical installations in explosive atmospheres | Unit Ex 001 |
| Unit 004, 007 & 008 | Perform visual close and detailed inspection and Maintenance of electrical installations in explosive atmospheres | Unit Ex 001 |
| Unit 003 | Install explosion-protected equipment and wiring systems | Unit Ex 001 |
| Unit 006 | Test electrical installations in or associated with explosive atmospheres | Unit Ex 001 |
| Unit 003 & 006 | Install explosion-protected equipment and test electrical installations in explosive atmospheres | Unit Ex 001 |
