Many parameters influencing corrosion degradation are time-variant and the corrosion process is thus subject to temporal variability, the real characteristics of which are commonly neglected in reliability assessment. After a short overview on the quantitative modeling of corrosion loss, a comparison is made between different temporal models of corrosion degradation and the consequences of applying an inappropriate model are investigated. The effect of temporal variability is then investigated in detail and illustrated on an example considering CO2 corrosion in pipelines. It is demonstrated how the time-variant corrosion process can be consistently represented by constant parameters, using equivalent values of the corrosion rate. Finally the influence of temporal variability on the reliability updating following inspections is investigated and it is shown how this effect can be accounted for in inspection planning.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4196-0
PROCEEDINGS PAPER
Temporal Variability in Corrosion Modeling and Reliability Updating Available to Purchase
Daniel Straub,
Daniel Straub
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
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Michael Havbro Faber
Michael Havbro Faber
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
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Daniel Straub
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
Michael Havbro Faber
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
Paper No:
OMAE2005-67199, pp. 97-105; 9 pages
Published Online:
November 11, 2008
Citation
Straub, D, & Faber, MH. "Temporal Variability in Corrosion Modeling and Reliability Updating." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 2. Halkidiki, Greece. June 12–17, 2005. pp. 97-105. ASME. https://doi.org/10.1115/OMAE2005-67199
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