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近年来海底管道由于腐蚀缺陷造成失效的事件有增多的趋势。为了评估在管道发生腐蚀后失效的风险性,对DNV-RP-F101的腐蚀管道强度评估方法进行研究,通过算例对影响强度评估的关键因素进行了敏感性分析,并对DNV-RP-F101和DNV-OS-F101的关系进行了探讨。结果表明:影响强度评估结果的三个主要因素中,缺陷检测数据误差对评估结果影响最大。当满足一定条件时,屈强比对评估结果的影响可忽略。
In recent years, submarine pipelines due to corrosion defects caused by the failure of an increasing trend. In order to evaluate the risk of failure after pipeline corrosion, the corrosion pipeline strength evaluation method of DNV-RP-F101 was studied. The sensitivity analysis of the key factors affecting the strength assessment was carried out through an example. The DNV-RP-F101 And DNV-OS-F101 were discussed. The results show that among the three main factors that affect the result of strength assessment, the error of defect detection data has the greatest influence on the assessment results. When certain conditions are met, the effect of yield ratio on the assessment results is negligible.