arpadveress 
This standard provides the specific requirements for the design, selection, erection and the required initial inspection of electrical equipment in hazardous areas. This standard is also based on manufacturer’s instructions being followed. On-going inspection, maintenance and repair aspects also play an important role in control of hazardous area installations and the user’s attention is drawn to IEC 60079-17, IEC 60079-19 and manufacturer’s instructions for further information concerning these aspects.
So pls do not throw away – keep them – read them – show compliance to them.
Ex personnel competency of one’s shall deliver the proof of evidence to “understanding of practical skills for the preparation and installation of relevant concepts of protection” defined by manufacturer.
Keep up good work!
Arpad
