The relevance of rotors correction operation due to stress relaxation method improving is substantiated. Examples of rotors damage that have received a residual shaft bow are given. The importance of complex approach to repairing rotors with residual shaft bow is indicated. This complex approach should include special operations, turning, mechanical assembly, as well as non-destructive testing methods. It is shown how this approach is implemented in company «UK Teploenergoservice». Examples of rotors correction technology improving and engineering training methods implemented in company «UK Teploenergoservice» are given.