Affiliation: | aLaMI-UBP & IFMA, Campus de Clermont-Fd, Les Cézeaux, BP 265, 63175 Aubière Cedex, France bLR3MI, Département de Génie Mécanique, Université Badji Mokhtar, BP 12, Annaba 23000, Algérie cLGC—University Blaise Pascal, Campus des Cézeaux, BP 206, 63174 Aubière Cedex, France |
Abstract: | Lifetime management of underground pipelines is mandatory for safe hydrocarbon transmission and distribution systems. The use of high-density polyethylene tubes subjected to internal pressure, external loading and environmental variations requires a reliability study in order to define the service limits and the optimal operating conditions. In service, the time-dependent phenomena, especially creep, take place during the pipe lifetime, leading to significant strength reduction. In this work, the reliability-based assessment of pipe lifetime models is carried out, in order to propose a probabilistic methodology for lifetime model selection and to determine the pipe safety levels as well as the most important parameters for pipeline reliability. This study is enhanced by parametric analysis on pipe configuration, gas pressure and operating temperature. |