Sacrificial Cathodic protection (CP) System Inadequacy Due To 2-phase Operation of 3-phase Gas / Oil Separator

Sacrificial Anodes based Cathodic Protection System inside a pressure vessel may prove to be grossly inadequate for certain mode of<br>operation if the vessel internals made up of Corrosion Resistant Alloys are not well taken care of during design and / or installation.<br>This paper discusses the causes of accelerated consumption of Aluminium Sacrificial Anodes in a Low Pressure Gas / Oil Separator<br>operated in 2-phase mode instead of 3-phase, in a Gathering Center of Kuwait Oil Company (KOC). The sacrificial anodes which<br>were designed for 10 years of service life were consumed almost completely in less than a year.