A Holistic Approach for Reliability Evaluation of Unpiggable Pipelines Subjected to Corrosion

对不可清管的油气管道进行基于可靠性和风险的腐蚀评估是一项具有挑战性的任务，因为这些管道无法使用检测工具。对于不可清管管道的腐蚀状况，常用的收集方法包括取样开挖、静水压试验和地面测量等。因此，需要开发一种整体方法，使管道运营商能够有效地整合从不同来源获得的数据，以获得有关腐蚀状况的完整信息，并促进对不可清管腐蚀管道的可靠性评估和基于风险的完整性管理。拟议项目的目标是对这种方法的发展进行探索性调查。拟议的项目将采用贝叶斯方法，根据从各种来源获得的数据，更新不可清管管道上腐蚀特征的密度和大小。该研究将与安大略省奥罗拉市的行业合作伙伴JANA公司合作进行，并将培训一名博士后，为期六个月。该研究成果将促进不可清管油气管道的完整性管理，并提高加拿大庞大油气管网的安全性、可靠性和经济可行性。

The reliability- and risk-based corrosion assessment of unpiggable oil and gas pipelines is a challenging taskbecause such pipelines are inaccessible to inspection tools. Various methods including the samplingexcavation, hydrostatic pressure testing and above-ground survey techniques are commonly used to collectpartial information about the corrosion conditions of unpiggable pipelines. Therefore, there is a need fordeveloping a holistic approach that allows pipeline operators to effectively integrate data obtained fromdifferent sources to obtain the complete information about the corrosion condition and facilitate the reliabilityevaluation and risk-based integrity management of unpiggable corroding pipelines. The objective of theproposed project is to carry out exploratory investigations toward the development of such an approach. Theproposed project will employ the Bayesian methodologies for updating the density and sizes of corrosionfeatures on unpiggable pipelines based on data obtained from various sources. The research will be carried outin collaboration with the industry partner, JANA Corporation in Aurora, Ontario, and will train onepostdoctoral fellow for a duration of six months. The research outcome will facilitate the integritymanagement of unpiggable oil and gas pipelines and improve the safety, reliability, and economical viability ofthe vast oil and gas pipeline networks in Canada.