ONLINE EXCLUSIVE ARTICLE: Flow-Accelerated Corrosion in Steam Generating Plants

Published on 05/08/2020 | by Waterline Admin

Flow-accelerated corrosion (FAC) has been researched for over 50 years at many locations around the world, and scientifically all the major influences are well recognized. However, the application of this science and understanding to fossil, combined-cycle/HRSG and nuclear plants has not been entirely satisfactory. Major failures are still occurring and the locations involved are basically the same as they were in the 1980s and 1990s. This paper reviews the latest theory of the major mechanistic aspects and also provides details on the major locations of FAC in plants, the key identifying surface features of single- and two-phase FAC, the cycle chemistries used in the plants and the key monitoring tools to identify the presence of FAC. The management aspects as well as the inspection, predictive and chemistry approaches to arrest FAC are described, and the different approaches that are needed within fossil, HRSG and nuclear plants are delineated.

 

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