长输管道腐蚀速率计算方法选择探讨

Discussion on Selection of Calculation Method forCorrosion Rate of Long Distance Pipeline

腐蚀是威胁管道安全的重要因素,研判管道腐蚀风险具有重要意义。管道腐蚀速率是重要的管道外腐蚀控制准则和依据。确定准确管道腐蚀速率,可监控腐蚀缺陷发展趋势,制定科学的管道维修计划。管道腐蚀速率计算方法包括试验法、NACE经验公式、基于内检测和完整性评价法以及数学分析方法。阐述了上述方法的优缺点和适用范围,针对准确计算管道腐蚀速率提出应用建议。

Corrosion is an important factor threatening the safety of pipelines,it is of great significance to study the risk of pipeline corrosion.Pipeline corrosion rate is an important criterion and basis for external corrosion control.The accurate pipeline corrosion rate can monitor the development trend of corrosion defects and develop scientific pipeline maintenance plan.Pipeline corrosion rate calculation methods include test method,NACE empirical formula,internal inspection and integrity evaluation method and mathematical analysis method.The advantages,disadvantages and application scope of the above methods are described,and the application suggestions for accurate calculation of pipeline corrosion rate are put forward.