The application of thickness-detecting technology for oxide-scale on inner side of tubes in high-temperature superheater of a 630t/h boiber in thermal power plant under Qilu Petrochemical Corp has been described. Through implementation of this technology

situation-oriented replacement of tubes can be carried out based on the results of detecting

preventing effectively the tubes of high-temperature superheater from bursting due to excess-heating

enhancing the safety of entire boiler tubes

as well as avoiding the blindness in tube-replacement

or in selection of much higher quality of tubes to result in extravagance.