My Ex personnel competence as an Ex manufacturer shall be measured by the Ex certificate driven by the region product goes into.
If I do service related to product such as installation, maintenance or even repair on site, which is potential hazardous one – in that case there is a must have to prove my Ex personnel competency defined in relevant standards (ISO, IEC, EN and many more).
Keep up good work.
Arpad
Still many ask if the Ex devices shall be Ex certified or
EPD stands for explosion protection documentation and has been defined under ATEX
All has its sources of origin and informations. Product Ex certification: ISO
Ex personnel competency training (EPCT) is a type of further education. You
arpadveress 
