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Research on the Integrity Evaluation Technology for Urban Gas Pipeline

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Abstract

In order to research the new integrity evaluation technology of gas pipeline and promote the mature development of gas pipeline integrity management, this paper deeply analyzes the characteristics of Beijing gas pipeline and combines with the methods of finite element modeling, statistical analysis, mathematical fitting and experimental verification. Based on the Spangler-lowa method, the load effects of gas pipelines with different pressure grades are analyzed, a new method for evaluating the external load carrying capacity of gas pipeline with local corrosion defects was developed, and a method for evaluating the internal pressure carrying capacity of gas pipeline was determined. The research shows that the integrity structure evaluation of gas pipeline should be evaluated according to the pressure level. Medium- and low-pressure gas pipeline is mainly affected by external load, and deformation is the evaluation basis. The sub-high-pressure gas pipeline is affected by both external load and internal pressure, and its deformation and stress are taken as the evaluation basis respectively. High-pressure gas pipeline is mainly affected by internal pressure, and stress is the evaluation basis.

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Authors and Affiliations

  1. Beijing Gas Group Research Institute, Beijing, China

    Bin Ma & Xuqing Ma

  2. China University of Petroleum, Beijing, China

    Jian Shuai & Yan Li

Authors
  1. Bin Ma
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  2. Xuqing Ma
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  3. Jian Shuai
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  4. Yan Li
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Correspondence to Bin Ma.

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Ma, B., Ma, X., Shuai, J. et al. Research on the Integrity Evaluation Technology for Urban Gas Pipeline. J Fail. Anal. and Preven. 20, 1007–1018 (2020). https://doi.org/10.1007/s11668-020-00903-z

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  • DOI: https://doi.org/10.1007/s11668-020-00903-z

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