Looking for inputs from those who used dry ice blasting for cleaning various eqipment inside " Class I , Division 2, group C&D" locations such as petro-chemical plant , refinery etc .
What kind of authorization / certification is needed to take the equipment inside the petrochemical plant / refinery.
Who is the competent authority to issue such a certificate?
Is the declaration of the manufacturer of equipment acceptable for taking the equipment inside such plants ?