The problem of estimation of the technical conditions and residual resource of mining and metallurgical equipment is considered using the non-destructive methods such as visualmeasuring control and thermal observation shooting. It was established on the base of nondestructive control of of an overheat shoot at circular cooler of sintering plants that average wear of trough metal constructions makes 44.2% while its service life until destruction is as long as 43.1 months.