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Lessons Learned During 10 Years of ECDA Application

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.

Product Number: 51315-5601-SG
ISBN: 5601 2015 CP
Author: Sorin Segall
Publication Date: 2015
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This paper summarizes the results of ten years of ECDA application on more than 100 projects and includes a number of important lessons learned during the process.The large majority of the ECDA projects resulted in “clean bills of health” for the assessed pipelines. The actual number of direct examinations seldom exceeded the minimum number of digs required by NACE Standard SP 0502-2010.Topics like influence of pipe depth and local soil resistivity in classifying and prioritizing DCVG indications dealing with reversed gradients avoiding “double dipping” (i.e. prioritizing non-complimentary severe indications as Immediate Action Required) and dealing with “false” AC corrosion indications are discussed in detail in this paper.Keywords: conference papers, conference papers 2015, ECDA, CIPS, DCVG, DC, Coupons

This paper summarizes the results of ten years of ECDA application on more than 100 projects and includes a number of important lessons learned during the process.The large majority of the ECDA projects resulted in “clean bills of health” for the assessed pipelines. The actual number of direct examinations seldom exceeded the minimum number of digs required by NACE Standard SP 0502-2010.Topics like influence of pipe depth and local soil resistivity in classifying and prioritizing DCVG indications dealing with reversed gradients avoiding “double dipping” (i.e. prioritizing non-complimentary severe indications as Immediate Action Required) and dealing with “false” AC corrosion indications are discussed in detail in this paper.Keywords: conference papers, conference papers 2015, ECDA, CIPS, DCVG, DC, Coupons

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07150 Lessons Learned Applying ECDA

Product Number: 51300-07150-SG
ISBN: 07150 2007 CP
Author: Ray A. Ward and Alberto Valdes
Publication Date: 2007
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