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The intention of the study is to explore potential field maintenance products with service temperature ranges of 0 to 65°C for patch application, including patch repairing and to provide corrosion protection for irregularly shaped components, such as fittings and electrical connection to pipe (e.g., cadweld). Viscoelastic materials were selected as potential candidates due to their inherent features of cold-flow capability, low water permeability, easy application (by hand and directly applied to surface), and compatibility with a variety of existing pipeline coatings.
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Cathodic protection is used in addition to organic coatings to ensure the integrity of offshore and onshore buried structures against corrosion. The cathodic protection efficiency is usually ensured by keeping the potential of the structure to be protected in a narrow range following standard recommendations such as ISO 15589-1 and/or NF EN 12954. For onshore buried structures, this potential range is limited by the protection potential Ep and the limit potential El.
REAFFIRMATION. This AMPP standard test method specifies procedures to evaluate cathodic disbondment resistance of the steel structure coating systems under cathodic protection, such as buried or submerged pipeline and tank linings. The standard covers all test specimen geometries and test temperatures. This standard also takes into consideration all test parameters with the goal of the standard to be used during the selection of protective coating systems for use under cathodic protection. This test method is intended for use by facility owners, coating applicators, and coating manufacturers.
HISTORICAL DOCUMENT. Test method specifies procedures to evaluate cathodic disbondment resistance of the steel structure coating systems under cathodic protection, such as buried or submerged pipeline and tank linings.
DOWNLOADABLE HISTORICAL DOCUMENT. Test methods to evaluate coating systems for seawater immersion service on exterior surfaces of submerged offshore platform steel structures, piers, docks, pilings, subsea valves, and wellheads.
The purpose of this NACE International technical report is to provide basic information regarding the mechanisms involved with cathodic protection (CP) shielding for external coatings applied to carbon steel pipelines, and the manner in which the breakdown of coating systems may or may not contribute to CP shielding. It is intended to be a basic reference from which the tendency of a coating system to fail and shield CP may be understood on a conceptual basis. Non-corrosion-related pipeline protection systems, including concrete weight coating, polyethylene encasement, insulation, and mechanical pipeline protection systems, are outside the scope of this report. End users of this report may include pipeline designers, corrosion engineers, integrity management specialists, regulators, CP service providers, coating suppliers, coating service providers, equipment suppliers, and pipeline/facility owners.