Revised burst model for pipeline integrity assessment

Liu, Hanwen (2017) Revised burst model for pipeline integrity assessment. Masters thesis, Memorial University of Newfoundland.

[English] PDF - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (13MB)

Abstract

The failure of pipelines，often caused by corrosion affects the environment and economy considerably. To prevent this, it is necessary to focus on the corrosion of the pipelines. Burst pressure is a key factor to assess the integrity of a pipeline. There are three ways to determine burst pressure, lab testing, evaluation criteria (based on deterministic approach), and the Finite Element Method (FEM). The results of burst pressure assessment using evaluation criteria are too conservative compared to the results of an actual pipe burst experiment and FEM (Alves J L, 2003). The objectives of this thesis are to analyze the changing trend of burst pressure of pipelines with different defect dimensions; to compare the FEM results with those of the evaluated criteria to indicate the conservative property; and to revise the DNV burst model and verify its validity with actual burst experiments. The revised DNV model predicts burst pressure more reliably that could result in better engineering design of pipelines.

Actions (login required)

View Item