管道腐蚀破坏作为天然气管道的主要失效原因之一, 已经得到国内外学者的广泛重视, 而使用基于可靠性的腐蚀评价方法, 能够反映管道运行中所包含的不确定性, 因而被用作结构安全性的某种衡量标准。此方法能够在功能实现与失效模式之间综合考虑,其优点包括可在最低可能成本的前提下实现一致的高度安全性, 且能够适用于解决特殊载荷条件与新材料、新技术等问题。研究介绍了陆上天然气输送管道使用基于可靠性的腐蚀失效评价方法的具体思路, 详细阐述了该方法中理论模型的分析过程以及关键参数, 按照本文所述过程, 可以对管道的腐蚀失效作出有效的评价, 以便确保管道的可靠度水平, 在保障管道安全运行的前提下, 可以带来明显的经济效益和社会效益。

Pipeline corrosion damage as one of the main failure cause of gas pipeline, has gained extensive attention of scholars both at home and abroad, and the use of corrosion evaluation method based on reliability, can reflect the uncertainty contained in the operation of the pipeline, and is used as a measure of the structural safety.This method can achieve the function between failure mode and comprehensive consideration.Its advantages include can be realized on the premise of the lowest possible cost consistent with the high security, and can be applied to solve specific load condition and new materials, new technology, and other issues.In this paper, we study using onshore natural gas transmission pipeline is introduced based on the reliability of the evaluation method of corrosion failure of concrete train of thought, elaborated the method of theoretical model analysis process and the key parameters, according to the process described in this article, can make effective evaluation of pipeline corrosion failure, in order to ensure pipeline reliability level, under the premise that guarantee the safe operation of the pipeline, can bring obvious economic benefit and social benefit.