In a possible hazardous atmosphere only devices, equipments, power and working machines may be installed and operated which comply with the quality and temperature class or maximum temperature specified in the hazardous zone and which have been manufactured, inspected, maintained in accordance with explosion protection regulations, and have been repaired accordingly.
Keep up good work
Arpad
“Normal operation” means the situation when installations are used within their design
with long years of Ex.perience for Ex compliance / Ex personnel competency
After the signature of the construction contract, the contractor bears the legal
Equipment assemblers and manufacturers have made requests to certify equipment with a
arpadveress 
