Evaluation of the Residual Service Life of Main Pipelines with Regard for the Action of Media and Degradation of Materials
Evaluation of the Residual Service Life of Main Pipelines with Regard for the Action of Media and Degradation of Materials
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DOI：
10.1007/s11003-019-00228-9
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发表时间：
2019-07
影响因子：
0.9
通讯作者：
O. Y. Andreikiv;I. Y. Dolins’ka;I. P. Shtoiko;O. К. Raiter;Y. Matviiv
中科院分区：
文献类型：
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作者：
O. Y. Andreikiv;I. Y. Dolins’ka;I. P. Shtoiko;O. К. Raiter;Y. Matviiv
提出了含表面裂纹主管道在长期恒压输气、变压输油、加氢、土壤腐蚀等作用下剩余寿命的评估方法。考虑了材料的降解。由于降解程度的时间依赖性是微不足道的，它是由线性依赖性分析描述。能量法用于确定管道的剩余使用寿命。相应的计算模型（微分方程的初始和最终条件）的开发。对于特定的管道材料（Kh52，Kh60和Kh70钢），剩余使用寿命计算长期静态和可变负载下，在氢化和土壤腐蚀方面的材料降解30年。
We proposed new procedures for the evaluation of the residual service life of main pipelines with surface cracks under the action of a long-term constant gas pressure in gas pipelines, a variable pressure in oil pipelines, hydrogenation, and soil corrosion. The degradation of the materials is taken into account. Since the time dependence of the degree of degradation is insignificant, it is analytically described by linear dependences. The energy approach is used to determine the residual service life of the pipes. The corresponding computational models (differential equations with initial and final conditions) are developed. For specific pipe materials (Kh52, Kh60, and Kh70 steels), the residual service life is computed under long-term static and variable loads, in the presence of hydrogenation and soil corrosion with regard for the degradation of the materials for 30 yr.