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51316-7463-New and Old Challenges in Analyzing ECDA Indirect Inspections Data

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Product Number: 51316-7463-SG
ISBN: 7463 2016 CP
Author: Sorin Segall
Publication Date: 2016
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The analysis of indirect inspection data is a critical factor in conducting a successful ECDA process.This paper covers two lessons learned recently when dealing with bonded pipelines along common rights-of-way and also with equalization currents. The “old” challenge of differentiating between “threat” related versus “tool” related indications will be also discussed.Topics like attributing a coating holiday to the “right” pipeline in a common right-of-way differentiating a magnesium anode profile from an equalization current signature and “double dipping” in a DCVG indication are reviewed in detail in this paper.Keywords: ECDA CIPS DCVG reverse gradient equalization currents.
The analysis of indirect inspection data is a critical factor in conducting a successful ECDA process.This paper covers two lessons learned recently when dealing with bonded pipelines along common rights-of-way and also with equalization currents. The “old” challenge of differentiating between “threat” related versus “tool” related indications will be also discussed.Topics like attributing a coating holiday to the “right” pipeline in a common right-of-way differentiating a magnesium anode profile from an equalization current signature and “double dipping” in a DCVG indication are reviewed in detail in this paper.Keywords: ECDA CIPS DCVG reverse gradient equalization currents.
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This paper will show improvements in interpretation of direct current voltage gradient % IR and how accurate selection of pipeline coating rehabilitation location based on this concept would lead to improvements in cathodic protection performance. Case studies from previous external corrosion direct assessment digs will be presented.
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51314-3815-Challenges in Analyzing ECDA Indirect Inspections Data

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