Evaluation And Analysis of The Remaining Life of The Superheater Area Tube Boiler Using the Corrosion Rate Calculation Method

Abstract

In coal-fired power plant operations, maintaining the temperature stability of components is crucial for system efficiency and reliability. The superheater serves as a secondary heater for dry steam. One cause of reduced thermal performance is the non-uniform wall thickness of the pipes at various points. This study aims to determine the rate of pipe wall thinning in the superheater at panel 1 as sample area by 2027 using pipe wall thickness data from the 2025 overhaul inspection. The analysis results show that the highest corrosion rate occurs at point D in 2027, with an average of 0.27, resulting in a thinner pipe wall at that point compared to the other pipes. This thickness variation is related to corrosion and erosion caused by fluctuating operating loads.