Top Drive Inspections on a Fixed Offshore Platform

My thoughts are the OP is in no position of authority on a drilling rig and has no input on the final decision of how to inspect a top drive. If the OP is actually employed on a drill rig he could get the answers he seeks from those with experience that he reports to… Most drilling companies have well thought out written procedures for top drive inspection based on years of experience and if the OP is in a position to need to know this information in the performance of his job they will have already shared such information.