摘要
钢质天然气管道腐蚀绝大部分为外部腐蚀,因此准确检测和评价外防腐层的状况,是保证管道安全运行的基础。文章介绍了用交流电流衰减法(PCM)对防腐层进行检测的原理,结合崇明高压天然气管线现场的应用,对其使用情况进行了总结。
The corrosion of steel natural gas pipeline is mainly extemal corrosion. Therefore, it is very important to accurately inspect and evaluate the corrosion protection performance of extemal protection coatings. The paper introduces the principle of PCM and summarizes its applications combined with the high pressure natural gas pipeline engineering in Chongming County.
出处
《上海煤气》
2013年第6期4-6,9,共4页
Shanghai Gas
