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

Picture for 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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The quality of indirect inspection data is critical in an External Corrosion Direct Assessment (ECDA).  The need exists to increase the accuracy of the field data collection, to improve the data processing and to effectively present the results. This paper describes several challenges.
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51314-3918-An Application of ECDA to a Buried Pipeline Affected by Stray Current Interference

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