针对危害电站安全运行的流动加速腐蚀(FAC)现象, 结合专用分析程序包DRAWTHREE的模型和结构, 阐明了FAC的发生机理及其决定性因素, 提出了用于评估FAC和管壁减薄速率的方法和步骤, 并将上述程序分析结果与实验及电厂实际测量数据进行了比较, 结果吻合较好. 最后给出了用于缓解FAC的一些措施.
Flow accelerated corrosion (FAC) is one of phenomena which are challenging safety operation of power plant. The mechanism and dominant factor contributing to its ocurrence are illustrated. In parrallel, a dedicated FAC simulation code package, DRAWTHREE, its physical models and structure, as well as methodology and procedure for FAC and wall thinning evaluation are introduced. The code is then applied to the simulation of FAC and prediction of wall thinning rate, and the simulated results agree well with experimental and plant measured data. Finally, some countermeasures against FAC for different types of power plant are proposed.
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