Before Unloading :
Collect Data by inspection of the Internals and study of hydrodynamic performance Collect data by inspection of the catalyst and study of the pressure drop and contaminants
During Unloading :
Minimize catalyst breakage by improving the procedure, using granulometric tests Inspection of the reactor internals Collecting data about the catalyst bed (coking, bed distortion etc)
During Loading :
Control reactor internals, cleanliness, levelness of distributor trays, installation of gaskets Loading procedures, in particular for Dense Loading Guarantee loaded catalyst density Control of loading quality and quantity All activities as indicated in "Catalyst Dense Loading techniques" if Dense Loading is required
Reporting :
Provision of complete job report including photographs of critical points Advise on Future improvements Confirmation of loaded catalyst quantity and density obtained Video Inspection during the whole operation