Application of Fault Tree Analysis in the Reliability Analysis of Oil-Gas Long Pipeline

摘要

Fault tree analysis method is used to carry on the safety and reliability analysis to the oil-gas pipelines in this paper. Firstly, establish the fault tree which top event is pipeline failure. Next, carry on the qualitative analysis to the fault tree. By the qualitative analysis, we can discover the major factors which induce the pipeline to failure and then establish the main risk fault tree. Finally, carry on the quantitative evaluation to the fault tree with main risk factors. Expert estimation and fuzzy mathematics analysis methods are used in the quantitative evaluation. In this way, the weak points of the pipeline system are distinguished, and we can also point out the basic event which improves easily if the pipeline system breaks down.