Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment

The long-distance gas pipelines inevitably experience global bending deformation due to the ground movements. Meanwhile, a harsh environment where both the temperature may change drastically and the high chloride ion soil condition possibly causes more severe corrosion on the pipelines, could pose a...

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Main Authors: Li, Yitao, Chen, Chunxia, Yao, Liming, Fan, Mu, Zhang, Yanmei
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/173296
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1732962024-01-23T06:09:45Z Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment Li, Yitao Chen, Chunxia Yao, Liming Fan, Mu Zhang, Yanmei School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Gas Pipelines Failure Analysis The long-distance gas pipelines inevitably experience global bending deformation due to the ground movements. Meanwhile, a harsh environment where both the temperature may change drastically and the high chloride ion soil condition possibly causes more severe corrosion on the pipelines, could pose a significant challenge to pipeline safety. It is very crucial to ensure gas pipeline safety and durability in the energy transportation industry. Therefore, this study aims to systematically investigate the failure pressure of corroded gas pipelines under the combined effects of global bending and temperature difference. Considering gas pipelines potentially exposed to soil conditions with different contents of sodium chloride (NaCl), five corrosion rate models were for the first time employed to carry out reliability-based lifetime prediction analysis. The results show that compared to the case without global bending and temperature difference, the service life of gas pipelines can be reduced by 14 % in the case of global bending strain of 0.25 % and temperature difference of −40 °C. As for the corrosion rate model, the Model 4 plays a strongly adverse role in the service life of gas pipelines. Furthermore, parametric sensitivity analysis indicates that apart from the working pressure, initial corrosion depth and the radial corrosion rate are the two more influential factors in affecting the service life of gas pipelines. This work was financially supported by the Scientific and Technological Research Program of Chongqing Municipal Education Commission (Grant No. KJCXZD2020002), Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University (Grant No. LNTCCMA-20210111) and State Key Laboratory of Mechanics and Control for Aerospace Structures (Nanjing University of Aeronautics and astronautics) (Grant No. MCMS-E-0123G02). 2024-01-23T06:09:45Z 2024-01-23T06:09:45Z 2024 Journal Article Li, Y., Chen, C., Yao, L., Fan, M. & Zhang, Y. (2024). Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment. Engineering Failure Analysis, 156, 107802-. https://dx.doi.org/10.1016/j.engfailanal.2023.107802 1350-6307 https://hdl.handle.net/10356/173296 10.1016/j.engfailanal.2023.107802 2-s2.0-85177189386 156 107802 en Engineering Failure Analysis © 2023 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Gas Pipelines
Failure Analysis
spellingShingle Engineering::Mechanical engineering
Gas Pipelines
Failure Analysis
Li, Yitao
Chen, Chunxia
Yao, Liming
Fan, Mu
Zhang, Yanmei
Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
description The long-distance gas pipelines inevitably experience global bending deformation due to the ground movements. Meanwhile, a harsh environment where both the temperature may change drastically and the high chloride ion soil condition possibly causes more severe corrosion on the pipelines, could pose a significant challenge to pipeline safety. It is very crucial to ensure gas pipeline safety and durability in the energy transportation industry. Therefore, this study aims to systematically investigate the failure pressure of corroded gas pipelines under the combined effects of global bending and temperature difference. Considering gas pipelines potentially exposed to soil conditions with different contents of sodium chloride (NaCl), five corrosion rate models were for the first time employed to carry out reliability-based lifetime prediction analysis. The results show that compared to the case without global bending and temperature difference, the service life of gas pipelines can be reduced by 14 % in the case of global bending strain of 0.25 % and temperature difference of −40 °C. As for the corrosion rate model, the Model 4 plays a strongly adverse role in the service life of gas pipelines. Furthermore, parametric sensitivity analysis indicates that apart from the working pressure, initial corrosion depth and the radial corrosion rate are the two more influential factors in affecting the service life of gas pipelines.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Li, Yitao
Chen, Chunxia
Yao, Liming
Fan, Mu
Zhang, Yanmei
format Article
author Li, Yitao
Chen, Chunxia
Yao, Liming
Fan, Mu
Zhang, Yanmei
author_sort Li, Yitao
title Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
title_short Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
title_full Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
title_fullStr Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
title_full_unstemmed Reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
title_sort reliability analysis of gas pipelines under global bending and thermal loadings considering a high chloride ion environment
publishDate 2024
url https://hdl.handle.net/10356/173296
_version_ 1789483072776830976