Degradation mechanisms and evaluation of failure of gas pipelines

Authors

  • Remigijus Janulionis
  • Gintautas Dundulis
  • Albertas Grybėnas
  • Rita Kriūkienė
  • Sigitas Rimkevicius

DOI:

https://doi.org/10.5755/j01.mech.21.5.10196

Keywords:

gas transmission pipeline, fracture toughness, stress corrosion cracking

Abstract

This paper presents the degradation mechanisms and their effect on lifetime of Gas Transmission Pipelines (GTP). The degradation mechanisms of US, Europe, Russian and Lithuanian GTP are presented. Lithuanian GTP is described in more detail. The experimental testing of mechanical properties and fracture parameters of selected pipelines were carried out. The fracture mechanic analysis was performed for segment of gas transmission pipeline of Lithuania. The acceptable and critical cracks sizes were determined. Also Stress Corrosion Cracking (SCC) mechanism was analysed and cracks sizes at witch SCC could be expected were determined. For simulation of defects R6 option 1 method was used.

DOI: https://dx.doi.org/10.5755/j01.mech.21.5.10196

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Published

2015-10-26

Issue

Vol. 21 No. 5 (2015)

Section

MECHANICS OF SOLID BODIES

License

The copyright for the articles in this journal is retained by the author(s) with the first publication right granted to the journal. The journal is licensed under the Creative Commons Attribution License 4.0 (CC BY 4.0).