Offshore coating and exposure trials have been conducted on mild steel test pieces. The test pieces were designed to give a realistic cross section of the typical design features of an offshore platform. They comprised plate, tube and rolled steel joists and included rough welds, sharp edges, burrs, drilled holes and bolt-heads; typical areas where premature corrosion of the structure would occur. Twelve generic coating systems were selected as being representative of the systems being used for the protection of fixed offshore structures above the water line, at the time testing commenced in 1974. Surface preparation and coating application were carried out on a Conoco Gas Platform in the Viking Field of the British North Sea. Normal construction methods and procedures were adopted both for the surface preparation and the application under full-time inspection. Air and steel temperatures, relative humidities, details of the blast standard and coating thicknesses were carefully monitored during application. One side of the blast cleaned pieces was deliberately left to 'bloom' prior to the application of the primer to provide additional information on the tolerances of the primer to surface condition. (Wassmann)
Results of offshore tests of selected coating systems
Ergebnisse von Offshoreversuchen mit ausgewaehlten Anstrichsystemen
North Sea Corrosion - what have we learnt. Trans I ; 97 ; 43-50
1979
8 Seiten, 8 Bilder, 1 Tabelle
Conference paper
English
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