摘要
埋地油气管道在施工及运行过程中,外防腐层不可避免会产生各种缺陷。为了保证油气管道安全稳定运行,必须定期对管道实施外检测以及时发现缺陷并加以安全评价。首先对埋地油气管道外防腐层缺陷检测内容进行了介绍,进一步分析了各种检测技术的工作原理及优缺点、防腐层分级评价和外腐蚀直接评价,最后阐述了外腐蚀检测的应用及存在的问题、相关技术标准以及发展趋势。指出应该不断发展完善现有管道防腐层检测技术,建立相应的分级评价体系,同时充分利用挖掘各类检测数据,深入拓展各种评价标准,建立适合国情的外腐蚀检测方法与评价体系。
Usually the external coating of underground oil-gas pipeline would be damaged in the construction and operation.It is very necessary to detect and assess the external coating by various methods to ensure security and stability of the pipelines.In this paper,detection contents of the external coating deficiency were introduced,principle and characteristics of various methods were analyzed as well as grading evaluation and direct assessment of the external corrosion,application and existing problems of the external detecting technology were discussed as well as relevant technology standard and development trend.It’s pointed out that the existing detecting technology should be improved and the grading evaluation system should be constructed;the suitable detecting technology and assessment system of the external coating should be established.
出处
《当代化工》
CAS
2013年第7期980-983,共4页
Contemporary Chemical Industry
关键词
管道
防腐层缺陷
检测技术
评价
Pipeline
Coating deficiency
Detecting technology
Assessment
