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Cold corrosion or Low temperature corrosion

Low temperature corrosion is mainly caused by sulphur.During combustion sulphur in fuel react with oxygen to form SO2 and further SO3, which react with water to form sulphuric acid vapours. Where metal temperatures are below 160 degree Celsius, sulphuric acids condenses and corrodes metal. The only defense is using load control cooling and using high TBN fuel.
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