长输管道防护层缺陷及检测技术

Defects of Protecting Layer of Long ?distance Pipeline and Monitoring Technology

长输管道腐蚀问题日趋严重,防护层存在的破损、剥离等缺陷对管道安全运行构成极大威胁。文章介绍了已有的多种管道防护层地面检测技术,着重分析了电化学阻抗谱(EIS)技术对防护层剥离检测的似适用性。

The deterioration of corrosion of long-distance pipeline, the damages and spalling of protecting layer have imposed great threats to the reliable operation of pipeline. The monitoring technologies for various existing protecting layer of pipelines were introduced and the applicability of EIS to monitor the spalling of protecting layer was analyzed.