Application of Sacrificial Anode Protection in Seawater Pressure Testing of LNG Storage Tanks
Compared to using fresh water as the pressure testing medium,using seawater as the pressure testing medium has the advantages of convenient water extraction and low cost.However,seawater is a highly corrosive natural electrolyte solution that has strong corrosiveness to the inner tanks of LNG storage tanks.Therefore,sacrificial anode cathodic protection method is often used to protect the internal tanks from corrosion.This article provides a brief explanation of sacrificial anode cathodic protection method and provides a design and application example of sacrificial anode cathodic protection method in LNG tank pressure testing.The application example proves that using sea water as the actual pressure testing medium and sacrificial anode protection can effectively protect X7Ni9 on the tank wall and bottom and other parts from corrosion.
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