Evaluate the present state and the condition of the boiler components in order to continue stable and reliable boiler operation. Evaluate the remaining life for Super heater and Reheater by metallurgical inspection. Evaluation of creep life and future inspection scheme by metallurgical inspection for water wall, economizer, Super heater and Reheater tubes. Evaluation degree of creep damage for Super heater and Reheater by hardness test.

Evaluate the remaining life based on thickness Measurement for water wall, Evaluate the remaining life based on thickness thinning for economizer due to Low Temperature Corrosion, Evaluate the remaining life based on thickness thinning for Super heater and Reheater tubes due to  High Temperature Corrosion. Corroborate the cause of the inner scale generation. Evaluate the remaining life based on check of metal structure ,inner scale ,etc

Before inspection Super heater, reheater, economizer and water wall cleaning. Air heater washing. Removal of insulation. Open man holes, inspection holes, flanges  etc. During inspection Surface preparation of inspection parts. Surface finishing (grinding) of inspection parts. Instrument of apparatus of inspection. Cutting tubes, Welding tubes.