CORROSION— Conclusion: Pitting corrosion models improve integrity management, reliability

New deterministic and stochastic models for external pitting corrosion in underground pipelines can help improve integrity and reliability analyses. This concluding article applies these models to Monte Carlo-simulated and real pipeline pitting corrosion data obtained from field and in-line inspections (ILI).Part 1 of this series (OGJ, July 20, 2009, p. 64) described a deterministic predictive model relating pit growth to soil and pipeline characteristics, showing it is possible to establish a physically sound correlation between pitting model parameters and soil and pipeline characteristics.Part 1 also described a continuous-time, nonhomogenous linear growth Markov process developed for ...

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