Remnant Life Assessment of High Temperature Tubes in 250MW Boiler

The fluctuation in temperature and pressure boiler parts subjected to creep fatigue stress also fuel burnt steam generation leads corrosion various areas the boiler. Residual during manufacturing, vibration due flow over tube, mechanical vibrations, erosion abrasive nature of fuel, does occur boilers. All above, individually or combined lead material degradation different magnitude will failure. It reduction life superheater tubes results necessity repair every 4–5 years with replacement up 30–50% tubes. remnant assessment (RLA) boilers predicts accurately remaining high allows reducing amount cost repair. method for reheater steel operating conditions intensive high-temperature is presented this paper. based on measurements tube wall thickness resistance particular steel.