Page 114 - Reliability and Maintainability of In service Pipelines

Time-Dependent Chapter

Reliability Analysis 4

Abstract
All in-service pipelines encounter deterioration due to environmental effects. The
deterioration is a time-dependent process which makes the structural integrity of
pipelines a time variant characteristic. Advanced mathematical methods which
employ probability theory need to be used for time-dependent reliability analysis of
pipelines. In this chapter, the methods for the time-dependent reliability analysis of
in-service pipelines are presented. These methods will allow for:
Application to all type of corrosion-affected pipelines.
The capability to consider multi failure mechanisms/modes.
Consideration of the scarcity of monitoring data from real-world examples.

Chapter Outline
4.1 Background 104
4.2 First Passage Probability Method 105
4.3 Gamma Process Concept 108
4.3.1 Problem Formulation 108
4.3.2 Developing Gamma Distributed Degradation Model with Available
Corrosion Depth Data 110
103

Reliability and Maintainability of In-Service Pipelines. DOI: https://doi.org/10.1016/B978-0-12-813578-5.00004-4
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