Cathodic protection combined with organic coating is the normal way to protect structures exposed to sea water against corrosion. The oil and gas industry is moving to deeper waters with pipelines and production systems located on the sea bottom, often far away from shore. Sea water temperature down to -10C is occurring in these deep waters. This paper presents results from carbon steel specimens polarized in the range -800 - -1100 mV SCE in natural sea water at temperature 0 deg C for periods up to 8 weeks. Results from short term exposure of specimens at 7 deg C are also included for comparison. Current density values will be presented. In addition the composition of calcareous deposits on the surface will be described.
Cathodic protection in cold seawater - Current density requirements
2009
14 Seiten, 23 Quellen
Aufsatz (Konferenz)
Englisch
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