In-situ (mobile) repair technologies are used for specialised equipment and machinery repairs, as they offer considerable cost reductions and increase the technological lifespan of industrial equipment. Such parts as frames, joints or buckets can be renewed to an excellent standard using insitu technologies. In-situ renovation technology is itself a non-conventional operation, even though the techniques of turning and installation are relatively well studied and developed. Conversely, build-up welding processes can be studied further and potentially substituted by more advanced and economically more viable, modern surface-renovation technologies. Emphasis will be placed on cladding technologies. By examining the literature, the objective is to identify and justify the most appropriate surface-coating technology. The best results were achieved by Gas metal arc welding, Plasma arc welding and Laser cladding technologies. Experimental work will follow for these three technologies.