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DOWNLOADABLE HISTORICAL DOCUMENT.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.
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This updated NACE International standard test method specifies test methods to evaluate the performance of liquid coating systems for seawater immersion services. This test method is intended for use by facility owners and coating manufacturers.The test method covers liquid exterior protective coating systems for offshore platform steel structures, piers, docks, pilings, subsea valves, and wellheads at normal seawater temperature.
Included are four test methods—including cathodic disbondment, seawater immersion resistance, aging stability, and edge coverage—used to evaluate coating systems. The test method also includes two tables; Table 1 details fingerprinting of coating materials, and Table 2 details the test panel geometry, size, substrate material, and minimum quantity.
Methods to evaluate performance of atmospheric and splash zone maintenance coating systems on platforms. Fixed-leg, semi-submersible, tension-leg, and floating production storage offloading (FPSO).
Evaluation of the performance of offshore atmospheric and splash zone coating systems on platforms. Fixed-leg, semi-submersible, tension-leg, and floating production storage and offloading (FPSOs).
Almost 20 years ago the use of Ultra High Pressure Waterjetting (UHP) in shipyards for maintenance and for offshore projects started to be pushed, due to the development of surface and moisture tolerant paint technology becoming available. This was recognized by the likes of US Navy and Petrobras at the time.
Testing is performed in seawater cooled scale model heat exchangers with 0.5 ppm residual chlorine during a period of 18 months. Thus, it shows a corrosion resistance of the materials at a heat flux representative to a tube skin temperature up to 95°C inside in the seawater.