External Coating Indirect Inspection
External coating indirect inspections are conducted on buried pipeline in order to measure and assess the protective coating on the outside of the pipeline, and to pinpoint any coating anomaly indications that may be indicative of exposed metal. Several complimentary methods are used to evaluate the external coating, each with its own advantages and disadvantages. By utilizing several methods, the interferences between each method can be eliminated, providing confidence in the measured anomalies. The equipment and procedures employed by Rysco Corrosion Services Inc are in full compliance and support of Indirect Inspection methods per ANSI/NACE SP0502-2010 ‘Standard Practice for Pipeline External Corrosion Direct Assessment Methodology’.
The primary indirect inspection methods used by Rysco Corrosion Services are Alternating Current Coating Attenuation (ACCA), and Alternating Current Voltage Gradient (ACVG). Additional services in support of external coating indirect inspections are Depth of Cover (DOC), Land Use, Right of Way Inventory (ROW), and Close Interval Potential Surveys (CIPS).
If you are interested in learning more about this service, please contact us.
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