Improving the Pipeline Integrity Management Practice with respect to Metal-loss Corrosion and Third-Party Interference

拟议项目的目的是针对两大威胁，即金属流失腐蚀和第三方干扰，改进压力钢输送管道的结构完整性管理。研究的具体目标是：1)制定程序，以确定验证腐蚀缺陷在线检测(ILI)数据的准确性所需的最小或最佳野外挖掘次数，并调查与ILI报告的腐蚀缺陷深度和长度相关的测量误差；2)基于大规模高保真有限元分析(FEA)建立的腐蚀管道爆破压力能力数据库，建立了准确、实用的腐蚀管道爆破能力模型；3)通过改进第三方干扰概率估计模型和管道冲击力和抗穿刺性评价方法，改进了针对第三方干扰的管道完整性管理实践。这项研究将在TransCanada和NSERC的支持下，由两名联合首席研究员洪兴平博士和周文华博士在三年内进行，并将涉及两名博士后研究员和三名博士后学生的培训。 研究成果将使TransCanada和加拿大管道行业能够更有效地管理传输管道网络的完整性，并为加拿大社会的长期繁荣做出贡献。拟议的项目还为参与其中的PDF和博士生提供了一个独特的培训机会，他们将通过开展具有高度实用意义的最新研究来发展出色的技术技能，并通过定期与经验丰富的管道完整性工程师互动来获得宝贵的实践经验和知识。这项培训将使他们成为加拿大管道网络的下一代管家。

The proposed project is aimed at improving the structural integrity management of pressurized steel transmission pipelines with respect to two major threats, namely metal-loss corrosion and third-party interference. The specific objectives of the research are to 1) develop procedures to determine the minimum or optimal number of field excavations required for validating the accuracy of inline inspection (ILI) data for corrosion defects, and Investigate measurement errors associated with the ILI-reported depth and length of the corrosion defects; 2) develop an accurate, practical burst capacity model for corroded pipelines based on a large database of burst pressure capacities established through extensive high-fidelity finite element analysis (FEA) that are validated by full-scale burst tests, and 3) improve the pipeline integrity management practice with respect to the third-party interference by improving the model for estimating the probability of third-party interference and methodologies for evaluating the impact force and puncture resistance of the pipeline. The research will be carried out by two co-principal investigators, Drs. H.P. Hong and W. Zhou, over a period of three years under the support of TransCanada and NSERC, and will involve the training of two postdoctoral fellows and three PhD students. The research outcome will allow TransCanada and the Canadian pipeline industry to more effectively manage the integrity of transmission pipeline networks, and contribute to the long-term prosperity of the Canadian society. The proposed project further offers a unique training opportunity for the PDFs and PhD students involved in that they will develop excellent technical skills by carrying out state-of-the-art research of high practical relevance, and gain valuable practical experience and knowledge by interacting with experienced pipeline integrity engineers on a regular basis. This training will enable them to become the next-generation stewards of the Canadian pipeline networks.