Automated Diagnosis and Classification of Stream Generator Tube Defects.

Technical Information Center Oak Ridge Tennessee

关键词: Generators;    Steam generators;    Tubes;    Corrosion;    Waste management;   

RP-ID  :  DE2004833464

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A major cause of failure in nuclear steam generators is tube degradation. Tube defects are divided into seven categories, one of which is intergranular attack/stress corrosion cracking (IGA/SCC). Defects of this type usually begin on the outer surface of the tubes and propagate both inward and laterally. In many cases these defects occur at or near the tube support plates. Several different methods exist for the nondestructive evaluation of nuclear steam generator tubes for defect characterization.