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09146 Predicting Coating Holiday Size Using ECDA Survey Data

Picture for 09146 Predicting Coating Holiday Size Using ECDA Survey Data
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Product Number: 51300-09146-SG
ISBN: 09146 2009 CP
Author: Mark Orazem, Patrick McKinney, Oliver Moghissi and Daphne D'Zurko
Publication Date: 2009
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Equations were developed that improve the accuracy of predicting coating holiday size from common ECDA survey tools. The results of previous simulations performed using a University of Florida model called CP3D were reduced to simple expressions that allow correction for soil resistivity, depth of cover, pipe diameter, CP level, and DCVG signal strength.

Keywords: ECDA, direct assessment, coating holiday, soil resistivity, cathodic protection, CP3D.
Equations were developed that improve the accuracy of predicting coating holiday size from common ECDA survey tools. The results of previous simulations performed using a University of Florida model called CP3D were reduced to simple expressions that allow correction for soil resistivity, depth of cover, pipe diameter, CP level, and DCVG signal strength.

Keywords: ECDA, direct assessment, coating holiday, soil resistivity, cathodic protection, CP3D.
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