NACE SP0191

Abstract

General This standard presents requirements for the proper application of internal plastic coatings (IPC) to the internal surfaces of oilfield tubular goods and accessories. The functions of the internal plastic coating system may be, but are not limited to the following: Serve as an impermeable barrier that prevents corrosive service environment (transported gas, fluids, and/or introduced chemicals) from accessing the bare steel surface of the pipe bore. Enhancing flow efficiency of transported products by reduction of friction coefficient. Improving hydraulic properties and flow-assurance of the pipe by reducing of formation of blockages by dropped out solids, attachment of harmful bacteria to the pipe bore surface, bonding of hydrates to the pipe wall, etc. Reduction of erosion and wear of steel internal surfaces by transported solids. Properly applied IPC significantly reduces the risk of internal corrosion and premature failure. Additional benefits may be realized by the improved flow efficiency and flow assurance. This standard addresses initial inspection of the tubular goods and accessories prior to coating, surface preparation, coating application, coating inspection, coupling/ connection make-up, quality control, handling, storage, shipping, and marking.