Minimum competencies:

General: Detailed knowledge of explosion protection (gas / dust)

Operative / technician: read hazardous area classification and design / installation / maintenance / detailed inspection

Further competencies (optional):

Non-electrical explosion protection: ISO 80079-36/-37

Repair: IEC 60079-19

Are you a technician on Ex field? pls check your competencies. It shall not be a one time practice, but more a daily if you agree.

Keep up good work!