Reliability analysis of gas pipeline with corrosion defect based on finite element method
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 1 February 2021
Issue publication date: 10 November 2021
Abstract
Purpose
Gas pipelines are facing serious risk because of the factors such as long service life, complex working condition and most importantly, corrosion. As one of the main failure reasons of gas pipeline, corrosion poses a great threat to its stable operation. Therefore, it is necessary to analyze the reliability of gas pipelines with corrosion defect. This paper uses the corresponding methods to predict the residual strength and residual life of pipelines.
Design/methodology/approach
In this paper, ASME-B31G revised criteria and finite element numerical analysis software are used to analyze the reliability of a special dangerous section of a gas gathering pipeline, and the failure pressure and stress concentration of the pipeline under three failure criteria are obtained. Furthermore, combined with the predicted corrosion rate of the pipeline, the residual service life of the pipeline is calculated.
Findings
This paper verifies the feasibility of ASME-B31G revised criteria and finite element numerical analysis methods for reliability analysis of gas pipelines with corrosion defect. According to the calculation results, the maximum safe internal pressure of the pipeline is 9.53 Mpa, and the residual life of the pipeline under the current operating pressure is 38.41 years, meeting the requirements of safe and reliable operation.
Originality/value
The analysis methods and analysis results provide reference basis for the reliability analysis of corroded pipelines, which is of great practical engineering value for the safe and stable operation of natural gas pipelines.
Keywords
Acknowledgements
This research was partially supported by Natural Science Foundation Project of Chongqing (Grant No. cstc2019jcyj-msxmX0434) and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJQN202001545).
Citation
Yang, Y.-J., Wang, G., Zhong, Q., Zhang, H., He, J. and Chen, H. (2021), "Reliability analysis of gas pipeline with corrosion defect based on finite element method", International Journal of Structural Integrity, Vol. 12 No. 6, pp. 854-863. https://doi.org/10.1108/IJSI-11-2020-0112
Publisher
:Emerald Publishing Limited
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