Mandatory skills of an Ex designer

Minimum competencies:
General:Detailed knowledge of explosion protection (gas / dust)
Supervisor (manager): hazardous area classification / read design / understanding Ex installation and maintenance concepts / close inspection
Further competencies (optional)
Non-electrical explosion protection: ISO 80079-36/-37
Repair: IEC 60079-19
Design: IEC 60079-14 with regards to design

Are you a designer 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!