中俄东线黑河—长岭段线路可靠性复核  

Recheck on reliability of Heihe-Changling Section of China-Russia Eastern Gas Pipeline

作　　者：蒋庆梅[1] 张小强[1] 余志峰[1] JIANG Qingmei;ZHANG Xiaoqiang;YU Zhifeng(China Petroleum Pipeline Engineering Corporation)

机构地区：[1]中国石油天然气管道工程有限公司

出　　处：《油气储运》2020年第12期1350-1356,共7页Oil & Gas Storage and Transportation

基　　金：中国石油天然气集团有限公司重大专项“智慧管网建设运行关键技术研究与应用”,2019E-20。

摘　　要：中俄东线天然气管道黑河—长岭段初步设计阶段的可靠性评价,管材基础数据来自试制钢管,环焊缝数据则参考焊接工艺适应性评价结果及以往工程统计数据。管道投产后,需要校验批量供货钢管相对试制钢管的性能差异及其对管道服役可靠性的影响,以及全自动焊的规模推广对管道可靠性的影响。基于新的基础参数,对比了试制钢管与批量供货钢管的性能参数,分析了全自动焊接环焊缝力学参数及缺欠数据,并采用最新数据复核管道的服役可靠性。结果表明:试制钢管与批量供货钢管的力学性能指标存在差异,但均满足标准要求;全自动焊提高了环焊缝质量,焊缝性能指标均高于标准要求;钢管性能波动直接影响管段的失效概率值,且随着服役年限的增加,外腐蚀引起的管道失效概率将逐步增大,但在30年服役期内,按照目前的设计、材料、施工、运行、维护标准,管道能够满足服役可靠性要求。In the reliability assessment of the Heihe-Changling Section of China-Russia Eastern Gas Pipeline at the preliminary design stage,the basic data of the pipeline sourced from trial-produced steel pipes,while the girth weld data referenced the welding process adaptability assessment results and previous engineering statistical data.After the pipeline commissioning,it is necessary to check the performance difference between the batch supply steel pipes and the trial-produced steel pipes and the impact on the service reliability of the pipeline,as well as the impact of automatic welding on the reliability of the pipeline.Based on the new basic parameters,the performance parameters of trial-produced steel pipes and batch-supplied steel pipes were compared,the mechanical parameters and defect data of automatic welding girth welds were analyzed,and the service reliability of the pipeline was rechecked with the latest data.The results show that the mechanical properties of trial-produced steel pipes are different from the batch-supplied steel pipes,but all of them meet the standard requirements.Automatic welding improves the quality of girth welds,and the weld performance indexes are all higher than the standard requirements.The fluctuation of steel pipe performance directly affects the failure probability value of the pipeline section.With the increase of service life,the failure probability of the pipeline caused by external corrosion will be gradually increased,but within the 30-year service life,the pipeline is estimated to meet the service reliability requirements according to the current design,materials,construction,operation and maintenance standards.

关 键 词：中俄东线 线路设计 可靠性 性能指标 失效概率 

分 类 号：TE88[石油与天然气工程—油气储运工程]