Reliability-based Assessment of Interacting Integrity Threats to Energy Pipelines

基于可靠性的能源管道相互作用完整性威胁评估

• 批准号: RGPIN-2019-05160
• 负责人: Zhou, Wenxing
• 金额: $ 3.13万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=738095
• 关键词: Reliability; based; Assessment; Interacting; Integrity

High-pressure large-diameter steel transmission pipelines are widely recognized as the safest and most economical means to transport large quantities of oil and gas over long distances. The transmission pipeline industry is vital to the Canadian economy: it contributed $11.5 billion to Canada's gross domestic product in 2015; most of the $81 billion Canadian crude oil and natural gas exports in 2014 was transported by pipelines, and members of the Canadian Energy Pipeline Association are proposing to invest a total of $50 billion in Canadian pipeline projects over the next five years. The safety of the vast oil and gas transmission pipeline networks in Canada is of critical importance and has profound socio-political implications. The long-term objective of the applicant's research program is to develop new knowledge, methods, models, decision-support systems and highly qualified personnel that will ensure the safety, resilience and sustainability of the Canadian oil and gas pipeline networks. The objective of the current proposal is to develop reliability-based fitness-for-service (FFS) assessment methodologies for existing pipelines subjected to interacting integrity threats, defined as two or more threats whose adverse effects on the structural integrity of pipelines are interrelated and interacting. Specifically, the proposed research is aimed at 1) understanding the failure mechanisms of pipelines under the threats of a) dent-corrosion; b) dent-crack; c) crack-in-corrosion; d) corrosion and external loads other than the pipeline internal pressure; 2) develop accurate, practical fitness-for-service assessment methodologies and models for pipelines under the above-mentioned interacting threats; 3) develop methodologies to evaluate the system reliability of pipelines under interacting threats, and 4) calibrate load and resistance factors to achieve reliability-consistent FFS assessment of pipelines with respect to interacting threats. The research will be based primarily on theoretical modeling and extensive numerical investigations involving high-fidelity finite element analyses. The proposed research program will train seven PhD students, two MESc students and two undergraduate students, and involve close collaborations with major Canadian pipeline operators. The research will provide much-needed tools for Canadian pipeline operators to deal effectively with interacting integrity threats, thus protecting lives, environment and high standard of living enjoyed by Canadians.

高压大直径的钢铁传输管道被广泛认为是长距离运输大量石油和天然气的最安全，最经济的方法。传输管道行业对加拿大经济至关重要：2015年，它对加拿大的国内生产总值贡献了115亿加元； 2014年加拿大原油和天然气出口的810亿加元中的大多数都是由管道运输的，加拿大能源管道协会的成员提议在未来五年内投资500亿加元。加拿大庞大的石油和天然气传输管道网络的安全至关重要，具有深远的社会政治意义。申请人研究计划的长期目标是开发新知识，方法，模型，决策支持系统和高素质的人员，以确保加拿大石油和天然气管道网络的安全，弹性和可持续性。当前提案的目的是针对受到相互作用的完整性威胁的现有管道的基于可靠性的健身服务（FFS）评估方法，定义为两个或多个威胁，它们对管道结构的不利影响是相互关联和相互作用的。具体而言，拟议的研究的目的是1）了解a）dent-corrosion的威胁下的管道的故障机制； b）凹痕； c）腐败裂纹； D）管道内部压力以外的腐蚀和外部负荷； 2）在上述相互作用的威胁下，开发了准确的，实用的服务评估方法和管道模型； 3）开发方法，以评估相互作用威胁下管道的系统可靠性，4）校准负载和电阻因子，以实现对相互作用威胁的管道的可靠性FFS评估。该研究将主要基于理论建模和涉及高保真有限元分析的广泛数值研究。拟议的研究计划将培训七名博士生，两名MESC学生和两名本科生，并与加拿大主要管道运营商进行密切合作。该研究将为加拿大管道运营商提供急需的工具，以有效地应对相互作用的诚信威胁，从而保护加拿大人享有的生活，环境和高水平的生活水平。