PSI - Issue 48

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 48 (2023) 363–370

Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Transportation Pipelines Corrosion: The Roles Played by Pressure, Metallurgy, and Geography Mohammed Badr Alzeer a, *, Kassem Ghorayeb b , Samir Mustapha a,b a Department of Industrial Engineering and Management, American University of Beirut, Riad El Solh - Beirut: 1107 – 2020, Lebanon b Bahaa and Walid Bassatne Department of Chemical Engineering, American University of Beirut, Riad El Solh - Beirut: 1107 – 2020, Lebanon Oil and gas pipeline operators have long been concerned about corrosion. While it's understood that factors such as internal pressure, metallurgy, and external conditions all contribute to pipeline degradation rates, few case studies have documented these variables' specific effects on corrosion. This case study examines a 24-inch oil-products transportation pipeline in Syria, where a magnetic flux leakage (MFL) inspection revealed over 276,000 metal loss features, with 96% occurring internally and only 4% externally. By analyzing inspection data and reviewing operating conditions, maintenance records, and oil-product properties, we were able to identify the influence of each variable on corrosion rate. Our analysis showed that corrosion frequency increased in areas with high operating pressure, with 81% of features detected where the mean pressure was 51 (Bar). We also found that the frequency of metal loss features was significantly higher in pipes made from X48 steel compared to Gr B line pipe. Finally, we noted that corrosion anomalies were more common in low sections of the pipeline, which had a mean height of 19 (m) compared to higher sections with an average height of 326 (m). © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Transportation Pipelines Corrosion: The Roles Played by Pressure, Metallurgy, and Geography Mohammed Badr Alzeer a, *, Kassem Ghorayeb b , Samir Mustapha a,b a Department of Industrial Engineering and Management, American University of Beirut, Riad El Solh - Beirut: 1107 – 2020, Lebanon b Bahaa and Walid Bassatne Department of Chemical Engineering, American University of Beirut, Riad El Solh - Beirut: 1107 – 2020, Lebanon Abstract Oil and gas pipeline operators have long been concerned about corrosion. While it's understood that factors such as internal pressure, metallurgy, and external conditions all contribute to pipeline degradation rates, few case studies have documented these variables' specific effects on corrosion. This case study examines a 24-inch oil-products transportation pipeline in Syria, where a magnetic flux leakage (MFL) inspection revealed over 276,000 metal loss features, with 96% occurring internally and only 4% externally. By analyzing inspection data and reviewing operating conditions, maintenance records, and oil-product properties, we were able to identify the influence of each variable on corrosion rate. Our analysis showed that corrosion frequency increased in areas with high operating pressure, with 81% of features detected where the mean pressure was 51 (Bar). We also found that the frequency of metal loss features was significantly higher in pipes made from X48 steel compared to Gr B line pipe. Finally, we noted that corrosion anomalies were more common in low sections of the pipeline, which had a mean height of 19 (m) compared to higher sections with an average height of 326 (m). © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers Abstract

Peer-review under responsibility of the IRAS 2023 organizers Keywords: Transportation Pipeline; Oil Products; Internal Corrosion Peer-review under responsibility of the IRAS 2023 organizers Keywords: Transportation Pipeline; Oil Products; Internal Corrosion

* Corresponding author. Tel.: /; fax: /. E-mail address: mma262@mail.aub.edu * Corresponding author. Tel.: /; fax: /. E-mail address: mma262@mail.aub.edu

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers 10.1016/j.prostr.2023.07.120