Have you ever considered Ex as one of most relevant topics of general industries?
Examples you may find almost in every case:
All shall be considered Ex in a way. From that point on the same Ex routine shall be applied as per for an oil refinery.
Keep up good work!
Arpad
One environment can be hazardous but not explosion-proof. One installation can be
The preliminary examination for occupational safety – except in the case of hazardous technology – may be conducted by a person with specialized training and professional qualifications in occupational safety, a person authorized by law, or an accredited institution. The examination of hazardous technology must be conducted by a person with a professional license in occupational safety and Explosion protection.
#exprofessional
Fixed gas detection systems have been used for many years to perform
Fire extinguisher does not need to be Ex certified because it is
arpadveress 
