摘要
为降低腐蚀因素给管道带来的风险,在梳理多种失效压力评价方法的基础上,从管道钢级、缺陷长度和缺陷深度3个方面分析ASME B31G准则、DNV-RP-F101准则、PCORRC准则3种方法的结果差异性,建立评价方法选择流程,从准确性和保守性2个角度对不同评价方法进行对比及分析。结果显示:DNV-RP-F101准则适用于中高强度钢、长腐蚀缺陷及重度腐蚀的失效压力计算,其准确性(相关系数0.9633)和中高强度钢适应性优于其他方法;PCORRC准则保守性最强,危险算例占比最低;组合使用评价方法时,以准确性为原则的计算失效压力与爆破压力相关系数达0.9663,以保守性为原则时危险算例仅2个。研究结果可为管道完整性管理水平的提升提供理论依据。
To reduce the risk of corrosion to pipelines,a variety of failure pressure assessment methods were reviewed.The differences in the results of the three methods,namely ASME B31G,DNV-RP-F101,and PCORRC,were analyzed from three perspectives:pipeline steel grade,defect length,and defect depth.The selection process for the evaluation methods was established,and a comparison and analysis of the different methods was carried out based on accuracy and conservatism.The results show that the DNV-RP-F101 criterion is suitable for the calculation of failure pressure of medium-and high-strength,long corrosion and severe corrosion.Its accuracy(correlation coefficient 0.9633)and adaptability to medium-and high-strength steel are superior to other methods.The PCORRC criterion is the most conservative and has the lowest proportion of dangerous cases.When the evaluation methods are used in combination,the correlation coefficient between the calculated failure pressure and the bursting pressure based on the principle of accuracy reaches 0.9663,while there are only two dangerous cases when the principle of conservatism is used.The research results can provide a theoretical basis for the improvement of pipeline integrity management level.
作者
晏广健
沈凌云
申林
崔青龙
项运帷
YAN Guangjian;SHEN Lingyun;SHEN Lin;CUI Qinglong;XIANG Yunwei(Huabei Oilfield Branch,PetroChina Company Limited,Renqiu Hebei 062552,China;Liaohe Oilfield Branch,PetroChina Company Limited,Panjin Liaoning 124010,China)
出处
《安全》
2025年第8期1-6,共6页
Safety & Security
关键词
腐蚀缺陷
管道
失效压力
保守性
准确性
corrosion defects
pipeline
failure pressure
conservativeness
accuracy
作者简介
晏广健(1988-),男,河北沧县人,工程师,主要从事陆上石油天然气开采质量安全环保监督工作。E-mail:41196828@qq.com。
