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The study of the anticorrosive process on steel pipe piles of the special unloading terminal in Fujian LNG
Author of the article:Chen qingbing,Li junzhong,Shen zongrong,Li chaopin
Author's Workplace:CNOOC-FUJIAN LNG Co., ltd
Key Words:steel pipe piles; anode current;anti-corrosion coating ;anticorrosive polyethylene tape;
Abstract:In order to reduce the corrosion rate of the steel pipe piles of the special unloading terminal in Fujian LNG, in Marine environment, prolong service life, combined with the corrosion mechanism in Marine environment ,analyzed the corrosive causes and features of the steel pipe . Through the analysis we came to the conclusion: in cathodic protection methods, compared to mandatory current method, we know that anode current method is more suitable than impressed current method for terminal's steel corrosion, because low investment and good stability; in external protect coating, because anti-corrosion coating construction complex and investment large, so it was not applicable to the steel pipe pile corrosion ,but anticorrosive polyethylene tape with the advantages of a simple construction, little pollution to environment and small investment, and through the anti-corrosion experiment with anticorrosive polyethylene on the steel pipe piles of the special unloading terminal in Fujian LNG, and the result is good, So the Joint application of sacrificial anode protection and wrapped anticorrosive polyethylene for steel pipe piles of the special unloading terminal is the best anti-corrosive schemes, in Fujian LNG.
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