arpadveress 
There shall be proof of evidence for any Ex personnel competency (EPC).
There are levels of EPC:
– according to iec/en 60079-10
– according to iec/en 60079-14
– according to iec/en 60079-17
– according to iec/en 60079-19
The above mentioned proof of evidence shall be checked by whom? Answer is simple: who is in charge of explosion protection, the one who is responsible for that.
At any enduser there shall be at least one who does. There shall be a definition of EPC.
There are training methodologies local and international ones. Mandatory are only few ones related to country’s legislation. Decision is more & more in the hand of endusers.
Keep up good work.
Arpad
