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The past 20 years in the field of Cathodic Protection (CP) have ushered in the distinct shift from the assessment of conventional Direct Current (DC) corrosion mechanisms to the more complex world of electrochemistry influenced by Alternating Current corrosion mechanisms. In fact, traditional assessment of CP protection levels without taking cognizance of the AC interference on a structure can have catastrophic consequences for pipeline operators. The most common misnomer over the past 20 years has been the idea that a pipeline under suitable levels of CP cannot corrode in a High Voltage Powerline Right of Way.
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This AMPP standard practice presents guidelines for establishing minimum requirements to ensure proper material selection, application, and inspection of pipeline liquid coatings used for the repair and rehabilitation of previously coated, buried steel pipelines and for coating the external surfaces of field joints on newly constructed, buried steel pipe. This standard addresses the required properties, application recommendations, and quality control testing for field-applied liquid coating using various chemistries on buried steel pipelines. Examples of currently used chemistries for field-applied liquid coatings include epoxies, polyurethanes, and vinyl esters. This standard is intended for use by corrosion control personnel, design engineers, project managers, suppliers, purchasers, and construction engineers and managers.
HISTORICAL DOCUMENT. This NACE International standard practice includes guidelines for surface preparation, material requirements, application, and handling of hot- and cold-applied wax and component wrappers and wax-based tape coating systems for the protection of underground pipe, fittings, and valves. The standard outlines material requirements for hot- and cold-applied wax coatings, and handling of the coated components, and includes five tables that provide material requirements and references to standard test methods for the various coating materials discussed. This standard is intended for use by corrosion control personnel, design engineers, project managers, purchasers, and construction engineers and managers.
This standard covers surface preparation, material requirements, application, and handling of hot- and cold-applied wax and component wrappers and wax-based tape coating systems for the protection of underground pipelines, and valves. This standard is intended for use by corrosion control personnel, design engineers, project managers, purchasers, application contractors, and construction engineers and managers. The use of this standard in coordination with the manufacturer of the referenced materials herein will reduce the chance of their misapplication and will maximize their potential to provide long-term corrosion protection. This standard is also referenced by NACE SP0169, “Control of External Corrosion on Underground or Submerged Metallic Piping Systems.”
This NACE International standard practice provides current technology and industry practices for the use of field-applied heat-shrinkable-sleeve coating systems. The standard is intended for use by corrosion control personnel, design engineers, project managers, purchasers, and construction engineers and managers. It is applicable to underground steel pipelines in the oil and gas gathering, distribution, and transmission industries.
The standard practice presents guidelines for establishing minimum requirements to ensure proper application and performance of field-applied, heat-shrinkable sleeves to the external surfaces of coated pipe. Included are methods for (1) qualifying and controlling the quality of a heat-shrinkable sleeve, (2) guidelines for proper application, and (3) inspection and repair techniques to ensure its long-term performance. The standard is applicable to coating systems used to prevent corrosion in conjunction with cathodic protection, and heat-shrinkable wraparound- or tubular-type sleeve coating systems on underground steel pipelines.