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08118 Analysis & Interpretation of CIS Data

Picture for 08118 Analysis & Interpretation of CIS Data
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Product Number: 51300-08118-SG
ISBN: 08118 2008 CP
Author: Robin Leigh Pawson
Publication Date: 2008
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The analysis and interpretation of close interval survey (CIS) data should involve far more than “did the polarized potentials meet the -0.85V criterion?” or “was the 100mV criterion achieved?” If these criteria were the only aspects of CIS needing review, someone with little or no training could determine compliance simply by inspection of the survey graphs. To perform accurate analysis and determine if the applicable criteria have been met requires a very detailed review of many facets of both the survey procedures and the results. This paper discusses what the author considers as the most pertinent and valuable aspects needed for proper analysis of the CIS performed on coated pipelines protected by impressed current cathodic protection (ICCP) systems.
The analysis and interpretation of close interval survey (CIS) data should involve far more than “did the polarized potentials meet the -0.85V criterion?” or “was the 100mV criterion achieved?” If these criteria were the only aspects of CIS needing review, someone with little or no training could determine compliance simply by inspection of the survey graphs. To perform accurate analysis and determine if the applicable criteria have been met requires a very detailed review of many facets of both the survey procedures and the results. This paper discusses what the author considers as the most pertinent and valuable aspects needed for proper analysis of the CIS performed on coated pipelines protected by impressed current cathodic protection (ICCP) systems.
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