Reason Analyses and Countermeasures of Serious Corrosion of a Power Plant Boiler

The water-cooled tubes of boiler in a power plant were burst. The failure of the water-cooled tubes was investigated by thickness measurement, material analysis, metallographic examination and composition analysis of corrosion products. The results showed that the unqualified water was the main reason that led to the serious corrosion of water-cooled tubes. Some corresponding countermeasures were put forward.