Three requirements that apply together
In Germany, the Industrial Safety Regulation (BetrSichV) defines the person competent to inspect in section 2 by three criteria: vocational training, professional experience and recent professional activity. The technical rule TRBS 1203 explains what is meant. None of the three replaces another – a master craftsman’s certificate without practice on hoists is as insufficient as twenty years of practice without relevant training.
What matters is the link to the equipment. Competence is not general; it applies to the class of equipment being inspected. Someone who inspects racking or industrial trucks is not thereby competent to assess a chain hoist or a jib crane.