*HAC stands for hazardous area classification.
Question: shall we take into consideration in case of HAC, if there is any ignition source present or not? do we Ex classify an area where is Ex hazardous environment, but no ignition source at all?
Answer is definitely YES. pls take a look at all the pentagon (dust) and triangle (gas) above. If all exist, there is an explosion and not a hazardous environment only.
Keep up good work!
30 June 2003. Before that ATEX was not mandatory (differentiation might be
can a lorry be considered as a possible ignition source in a
EPD or any Ex compliance report has a significant impact for Hazop / FMEA meetings. In process safety related meetings, the Ex equipment compliance should always be questioned.
#exprofessional
According to EN 60079-7 the temperature rise for machines with cage rotors
arpadveress 
