干线管道腐蚀损伤的可靠评定对于预测腐蚀发展进程、制定管道修复计划具有重要意义。对采用内诊断法进行管道腐蚀速度、腐蚀缺陷深度两项指标的评定过程加以讨述指出在管道腐蚀损伤预测过程中,应统筹考虑内诊断方法误差、诊断时间间隔等因素,以提高预测精度。 The reliable assessment of the corrosion damage of the main pipeline is of great significance for the prediction of the development of corrosion and the development of the pipeline restoration plan. The evaluation of two indexes of pipeline corrosion speed and corrosion defect depth using internal diagnosis method is discussed. It is pointed out that in the process of pipeline corrosion damage prediction, the factors such as the error of internal diagnosis and the time interval of diagnosis should be considered in order to improve the prediction accuracy.