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51315-5675-A Fuzzy Logic Model Designed for Quantitative Risk Analysis Based on ECDA Data

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Product Number: 51315-5675-SG
ISBN: 5675 2015 CP
Author: Amauri Martins Júnior
Publication Date: 2015
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Describes a Fuzzy Logic model intended for quantitative risk analysis to the integrity of buried pipelines. The proposed approach correlates data from combined CIPS+DCVG coating surveys to the soil resistivity in order to define an indicator that expresses the corrosion susceptibility at a given coating defect location. Inputs used in the mathematical model include: DCVG defect severity CIPS pipe-to-soil “ON” and "OFF" potentials and local soil electrical resistivity. The output is a real number defined in the interval [0 3] which provides a qualitative and quantitative degree of steel exposure to corrosion activity. Easy to implement the presented method is an additional tool to assist pipeline operators with with assessing the condition of their pipeline and prioritizing corrective actions.
Describes a Fuzzy Logic model intended for quantitative risk analysis to the integrity of buried pipelines. The proposed approach correlates data from combined CIPS+DCVG coating surveys to the soil resistivity in order to define an indicator that expresses the corrosion susceptibility at a given coating defect location. Inputs used in the mathematical model include: DCVG defect severity CIPS pipe-to-soil “ON” and "OFF" potentials and local soil electrical resistivity. The output is a real number defined in the interval [0 3] which provides a qualitative and quantitative degree of steel exposure to corrosion activity. Easy to implement the presented method is an additional tool to assist pipeline operators with with assessing the condition of their pipeline and prioritizing corrective actions.
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51314-3815-Challenges in Analyzing ECDA Indirect Inspections Data

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Product Number: 51317--9038-SG
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Lessons Learned During 10 Years of ECDA Application

Product Number: 51315-5601-SG
ISBN: 5601 2015 CP
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This paper summarizes the results of ten years of External Corrosion Direct Assessment (ECDA) application on more than 100 projects and includes a number of important lessons learned during the process.
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