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Coating Quality Testing of Directionally Drilled Pipe Sections

Published: 20000326 by NACE International
Author(s): Robert Gummow
Co-Author(s): Sorin Segall - Corrosion Service Company, Robert Wakelin - Corrosion Service Company

Methods of determining the coating quality on directionally drilled pipe sections were investigated in a research project sponsored by the Pipeline Research Committee of the American Gas Association. Tests were conducted on FBE coated pipe samples which were buried in three different soil conditions and equipped with steel strip coupons to simulate coating damage. A field test procedure, which can be performed by a CP technician, was developed that estimates coating quality in terms of percentage bare.