Characteristics of IGA/SCC and Eddy Current Inspection and Data Analysis for Nuclear Power Plant Steam Generator Tubes
Secondary Side Inter granular Attack and Stress Corrosion Cracking (IGA/SCC) have affected all major steam generator designs. According to the statistics, roughly 50% of all Pressurized Water Reactor plants are attacked by IGA/SCC. The characteristics of IGA/SCC and eddy current inspection and evaluation for nuclear power plant steam generator tubes were studied. It was found that the combined effects of stress. temperature and susceptible material could lead to IGA/SCC initiation and growth. In most cases, the IGA/SCC has been located at the top of the hot leg tube sheet, in open tube sheet crevice areas, and typically at the lower hot leg tube support plate intersections. For eddy current inspection and evaluation, it is necessary to monitor the vertical tracks of the differential mix and the low frequency absolute channel. Mainly we discussed the characteristics of two kinds of IGA/SCC and offered basic criterions to do data analysis.
应力腐蚀开裂 涡流检验 敏感材料 蒸汽发生器
BEI Ya-Yao LIN Zhong-Yuan HU Jin-Li SONG Tao WANG Xiao-Gang
CGNPC Inspection Technology Company, Ltd., Suzhou, Jiangsu 215004
国内会议
厦门
英文
388-392
2011-11-11（万方平台首次上网日期，不代表论文的发表时间）