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首页> 外文会议>CORROSION/2004 Research Topical Symposium on Corrosion Modeling for Assessing the Condition of Oil and Gas Pipelines; 2004; >A Review of Pipeline Damage Assessment and Lifetime Prediction in the People's Republic of China
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A Review of Pipeline Damage Assessment and Lifetime Prediction in the People's Republic of China

机译：中华人民共和国管道损伤评估与寿命预测研究述评

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摘要

In the paper, the status quo and development trend are introduced of the Chinese Oil and Gas pipeline industry and the significance of safety assessment for oil and gas pipelines are also expounded. Safety assessment methods for defect containing pipeline and the latest progress are generalized. The safety assessment for oil and gas pipeline can be categorized with respect to three aspects: the safety assessment with respect to geological disaster, the integrity assessment for defect-containing pipeline, and the effective protective life prediction of the protection coating layer. The pipeline integrity assessment methods can be further categorized as remaining strength assessment and remaining life prediction for defect containing pipeline. The defects can be classified into five types for remaining strength assessment and three groups for remaining life prediction. Up to now, we have carried out integrity assessment for over fifteen in-service oil and gas pipelines. In the near future, we should focus a certain extent of attention to the geological disaster assessment and effective protection life prediction for the coating layer. In the paper, three typical strength remaining models and three service life prediction methods are also introduced briefly. The other main point is the fractal characterization of hydrogen induced cracking which is especially a major problem for pipeline in China. A relationship is developed among general efficiency surface energy, hydrogen induced cracking threshold stress intensity factor and fractal dimension. The recent research status quo in China is also reviewed for soil induced stress corrosion cracking and some new interesting phenomena is also reported here. Finally, one typical application example was introduced, that fully accounted for the importance of safety assessment of oil and gas pipeline.
机译：本文介绍了中国油气管道行业的现状和发展趋势，并阐述了油气管道安全评估的意义。总结了含缺陷管道的安全评估方法及最新进展。油气管道的安全评估可以从三个方面进行分类：地质灾害的安全评估，含缺陷管道的完整性评估以及保护涂层的有效保护寿命预测。管道完整性评估方法可以进一步分为含缺陷管道的剩余强度评估和剩余寿命预测。缺陷可分为五类用于剩余强度评估，三类用于剩余寿命预测。截至目前，我们已经对超过15条在役的油气管道进行了完整性评估。在不久的将来，我们应该在一定程度上集中精力进行地质灾害评估和涂层的有效保护寿命预测。本文还简要介绍了三种典型的强度剩余模型和三种使用寿命预测方法。另一个要点是氢致裂化的分形特征，这是中国管道的主要问题。在一般效率表面能，氢致裂纹阈值应力强度因子和分形维数之间建立了关系。综述了近年来我国土壤应力腐蚀开裂的研究现状，并报道了一些新的有趣现象。最后，介绍了一个典型的应用示例，充分说明了油气管道安全评估的重要性。

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