Reliability assessments and remaining life of pipelines subject to combined loadings using imprecise probabilities

D. A. Opeyemi, E. Patelli, M. Beer, S. A. Timashev

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Imprecise probability approach for the reliability analysis of above ground pipelines with surface corrosion defects, subject to combined loadings is presented. The construction of the permissible region in the load space for above ground corroded pipeline subject to combined loadings is proposed. The dead load of the pipeline (i.e. summation of weights of the pipe, insulation and fluid), transported fluid operating pressure, and extra stresses due to development of defects are considered as variables. While the wind loads which depends on climate change is considered as very uncertain with imprecise values. A non-linear, power law corrosion model is used to represent the loss of pipe wall thickness with time. The permissible region is constructed according to the limit state which is reached when the equivalent stresses in pipe wall reach the yield stress of pipe material. Results obtained for typical pipelines are presented.

Original languageEnglish
Title of host publicationSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015
EditorsEnrico Zio, Luca Podofillini, Wolfgang Kröger, Bruno Sudret, Božidar Stojadinović
Pages2789-2796
Number of pages8
Publication statusPublished - 10 Sep 2015
Event25th European Safety and Reliability Conference, ESREL 2015 - Zurich, Swaziland
Duration: 7 Sep 201510 Sep 2015

Publication series

NameSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015

Conference

Conference25th European Safety and Reliability Conference, ESREL 2015
CountrySwaziland
CityZurich
Period7/09/1510/09/15

Keywords

  • pipelines
  • corroded pipelines
  • corrosion
  • reliability analysis
  • leakage (fluid)
  • probability
  • surface defects
  • yield stress

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  • Cite this

    Opeyemi, D. A., Patelli, E., Beer, M., & Timashev, S. A. (2015). Reliability assessments and remaining life of pipelines subject to combined loadings using imprecise probabilities. In E. Zio, L. Podofillini, W. Kröger, B. Sudret, & B. Stojadinović (Eds.), Safety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015 (pp. 2789-2796). (Safety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015).