Case Study - 3: Under Deposit Corrosion

Type of Failure Under deposit corrosion
Material Carbon Steel
Time to Failure 3 Years


Environment Hydrocarbons, moisture, CO2



Dirt, solids, loose corrosion products


Comments Areas under the deposits were observed to be highly susceptible to corrosion attacks while deposit free surfaces were free from attack.

Replace carbon steel tubes by high alloy tube. Use inhibitors and chemical agents which may dissolve the deposits.