Print Email Facebook Twitter A risk-based approach to inspection planning for pipelines considering the coupling effect of corrosion and dents Title A risk-based approach to inspection planning for pipelines considering the coupling effect of corrosion and dents Author Huang, Y. (TU Delft Safety and Security Science; Southwest Petroleum University) Qin, Guojin (Southwest Petroleum University; Shanghai Jiao Tong University; Material Corrosion and Protection Key Laboratory of Sichuan province) Yang, M. (TU Delft Safety and Security Science; University of Tasmania; Universiti Teknologi Malaysia) Date 2023 Abstract RBI, referring to a risk-based approach to inspection planning, is an established pipeline integrity management method. Both corrosion and dents are the primary threats to pipeline integrity. However, they are often treated separately in RBI without considering their interactions. This coupling may lead to a synergic effect on integrity degradation. The present study proposes an RBI planning framework for pipelines considering external corrosion and dents. Time-dependent pipeline deterioration by dents and corrosion is modeled probabilistically using a Dynamic Bayesian Network (DBN), in-line inspection (ILI) data, and corrosion propagation knowledge. Two failure scenarios (leakage and burst) are considered. The hybrid method, integrating Monte Carlo Simulation (MCS) and Latin Hypercube Sampling (LHS) technique, estimates the pipeline's Probability of Failure (PoF) over time. The pipeline failure risk is quantified by monetizing the Consequence of Failure (CoF). An optimization model of loss-maintenance total expected cost is introduced to determine the optimum inspection period using maximum acceptable risk (MAR) and the lowest total expected cost. A cost-benefit analysis (CBA) is finally implemented to choose appropriate risk reduction measures. The proposed framework is robust and well-validated by a case study on an in-service pipeline. Subject CorrosionDentsDynamic Bayesian networkPipelinesRisk-based inspection To reference this document use: http://resolver.tudelft.nl/uuid:a1d518cc-bab8-4585-bc93-1ffed77a802a DOI https://doi.org/10.1016/j.psep.2023.10.025 ISSN 0957-5820 Source Process Safety and Environmental Protection, 180, 588-600 Part of collection Institutional Repository Document type journal article Rights © 2023 Y. Huang, Guojin Qin, M. Yang Files PDF 1_s2.0_S0957582023009485_main.pdf 4.41 MB Close viewer /islandora/object/uuid:a1d518cc-bab8-4585-bc93-1ffed77a802a/datastream/OBJ/view