Internal inspection of pipelines is not always economic, prompting development of methods for assessing a pipeline's current condition based on historic operating and process conditions. Modeling the corrosivity of the fluids over the life of the pipeline allows establishment of an assessment of the line's current condition. This in turn allows development of a risk-based approach to extending asset life. The risk-based analysis uses uncertainty-based probability analysis to allow for gaps in data and uncertainty in process conditions. Changes in operating condition and process fluids over time will affect likely year-on-year degradation. This first part of two articles describes the parameters of the risk-based approach and presents the first of two case studies in which use of uncertainty modeling allows assessment of the pipeline's current condition. Life expectancy is presented as a probability profile, which can then assess the risk associated with changing future process parameters. This modeling approach also allows corrosion data to be transferred into financial data by assesssing probabiltiy and risk. The second, concluding, article will present the second case study.
Pipeline Inspection - 1. Uncertainty-based assessment substitutes for internal inspection
Oil and Gas Journal ; 105 , 41 ; 92-98
2007
5 Seiten, 4 Bilder, 3 Tabellen, 1 Quelle
Aufsatz (Zeitschrift)
Englisch
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