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Modelling deformation of corroded buried steel pipes and design of protective measure

Modelling deformation of corroded buried steel pipes and design of protective measure

Wordu, Alvan H., Tee, Kong Fah ORCID: 0000-0003-3202-873X and Shafiee, Mahmood (2019) Modelling deformation of corroded buried steel pipes and design of protective measure. Journal of Pressure Vessel Technology, 142 (1):011801. ISSN 0094-9930 (Print), 1528-8978 (Online) (doi:https://doi.org/10.1115/1.4045025)

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Abstract

Corrosion damage is reported to be one of the leading causes of steel pipeline failure causing significant financial losses to operators and damage to the surrounding environment. As part of a rising confrontation to pipeline integrity management, researchers are continuously seeking better ways to assist on how to identify, assess, and prevent such incidents. Thus, there is a crucial need to establish a connection between assessment of pipeline condition and its structural stability. To achieve this, a three-dimensional finite element (FE) model is developed. The effects of geometry parameters such as defect thickness and spread angle are considered. Results show that thicker pipelines with corrosion groove perform better structurally than slender equivalents. The impact of corrosion damage is assessed to be significant on pipe stability with pipelines experiencing higher displacement and wall stresses with increasing defect depth and spread angle. A protective measure has been proposed using the buried pipes bedding system. The most critical spread angle is at 60 deg for unprotected pipe sections and 90 deg for bedded protected sections.

Item Type: Article
Uncontrolled Keywords: corrosion, buried steel pipelines, deflection, finite element modelling, pipe wall thickness
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Engineering (ENN)
Last Modified: 19 Sep 2020 00:20
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/26567

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