Any Ex personnel competency shall be refreshed within maximum 5 years. If you do repair: within maximum 3 years.
There shall be a proof of evidence that you made it.
Keep up good work!
Arpad
exprofessional.com
Those responsible for operating plants and processes where potentially explosive atmospheres exist
Many people don’t know that the Annexes to these Standards (IEC 60079-14,
It is mandatory. It shall be with the product. It shall be
All covering Ex issues on site or related to shall be Ex
arpadveress 
