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Products tagged with 'cp shielding'

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Picture for 06043 DETERMINING THE CP SHIELDING BEHAVIOR
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06043 DETERMINING THE CP SHIELDING BEHAVIOR OF PIPELINE COATINGS IN THE LABORATORY

Product Number: 51300-06043-SG
ISBN: 06043 2006 CP
Author: G.R. Ruschau, Y.Chen
Publication Date: 2006
$20.00

The tendency of pipeline girth weld coatings to shield cathodic protection (CP) current was studied in the laboratory. Epoxy, epoxypolyurethane, polyurethane, and wax were investigated.  Results showed that the liquid coatings, when applied extra thin to accelerate the kinetics of absorption and current transmission, all disbonded by blistering, and all allowed CP current to be transmitted.
Picture for Aggressive Stray Current Corrosion on an Onshore Crude Line
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Aggressive Stray Current Corrosion on an Onshore Crude Line

Product Number: 51323-19499-SG
Author: Yusuf A. Nasidi, Mohammed S. Hamaqi, Hassan A. Al Basri
Publication Date: 2023
$20.00

The company operates several thousands of kilometers of pipelines that transport oil and gas from the offshore and onshore fields. A Risk Based Inspection (RBI) approach is adopted to ensure the safe operation of the pipeline system in accordance with the design, company, and legal requirements.


During one of the many planned In-Line Inspection (ILI) programs undertaken to determine the integrity status of their pipelines, a 48" crude pipeline was reported to have significant external corrosion on one of its onshore sections with reported metal loss of up to 93% of its nominal wall thickness.
Picture for Coatings Used in Conjunction with Cathodic Protection - Shielding vs NonShielding Pipeline Coatings
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Coatings Used in Conjunction with Cathodic Protection - Shielding vs NonShielding Pipeline Coatings

Product Number: 41212-693-SG
Author: Richard Norsworthy
Publication Date: 2012
$20.00

When using cathodic protection on coated pipelines, end users must consider the problems that exist if the coating disbonds (loses adhesion).  Many in the pipeline industry assume cathodic protection will solve their external corrosion problems without truly understanding the relationship between the coating and cathodic protection.  
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