摘要
介绍了国内外管道外防腐蚀层缺陷检测的几种检测技术,包括多频管中电流衰减法(PCM),Pearson法、标准管地电位法、近间距电位法、电流梯度法、直流电位梯度法等,重点介绍了PCM技术的检测原理及其在检测过程中的主要影响因素和注意事项。
The detection technologies for the underground pipeline coating deficiency including PCM detection, Pearson detection, P/S detection, CIPS detection, ACVG detection, DCVG detection, etc are introduced. The detection principles of PCN detection, the main influence factors and the precautions in the inspection are highlighted.
出处
《石油化工腐蚀与防护》
CAS
2010年第3期52-55,共4页
Corrosion & Protection In Petrochemical Industry
关键词
埋地管道
防腐蚀层
检测技术
underground pipeline, corrosion - resistant coating, detection technology
