关键词: 管道内检测 技术 标准 缺陷 裂纹 漏磁 超声 指标

Abstract: China oil and gas pipeline industry has achieved great development, but pipe body defect and corrosion problem may lead to serious safe potential. Domestic pipeline has comprehensively enforecd integrity management procedure. The pipeline in-line inspection technology can determine the pipeline corrosion and crack defection and ensure pipeline safe operation for a long time．The scope and advantages and disadvantages and technological status and application of pipeline in-line inspection technology at home and abroad were expounded in detail, including deformation testing, and magnetic flux leakage testing, and ultrasonic testing, and electromagnetic acoustic testing.Defect types and defect detectiong threshold and quantitative accuracy of defect were the most important performance parameter of inner detector that pipeline operator concerned, and should be verified through excavation verification and traction test. Finally, the future development trend of pipeline inspection technology is prospected, including internal detection technology for crack defects and SCC, eddy current internal detection and cathodic protection current detection technology.

Key words: Pipelines In-line Inspection Technology Standard Defect Crack Magnetic Flux Leakage Testing Ultrasonic Testing Parameter