摘要
统计分析了X80管道的主要结构与力学参数,包括母材屈服强度、母材拉伸强度、焊缝拉伸强度,母材冲击功、焊缝冲击功、热影响区冲击功及管道压力,这些参数均服从正态分布,给出了其均值和标准偏差,并采用威布尔分布和对数正态分布计算缺陷分布。基于FAD技术和Monte-Carlo法,采用国外目标可靠度指标对长距离含缺陷X80输气管道的可靠性进行评估,结果表明:即使存在缺陷漏检,含缺陷X80输气管道的可靠度也完全可以满足标准要求。该方法适用于输气管道的安全评定,具有工程实用价值。
This paper analyzes the main structural and mechanical parameters of XS0 pipeline, including the yield strength of base metal, tensile strength of base metal, weld tensile strength, impact energy of base metal, weld impact energy, impact energy of heat-affected zone （HAZ） and pipeline pressure. All these parameters follow a normal distribution and their mean values and standard deviations are given. Weibull distribution and lognormal distribution methods are adopted to calculate the defect distribution. Based on the FAD technology and Monte-Carlo simulation method and applying foreign target reliability indices, the reliability of the long-distance X80 gas pipeline with defects is assessed. Results show that even in the presence of defects undetected, the reliability of X80 gas pipeline with defects can fully meet standard requirements. The method is suitable for the safety assessment of gas pipelines and has practical value. （2 Tables, 1 Figure, 9 References）
出处
《油气储运》
CAS
2013年第6期590-593,共4页
Oil & Gas Storage and Transportation
基金
国家科技重大专项"大型油气田及煤层气开发"
2011ZX05030003-003
