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  1. DouglasD

    Corrosion rate of steel in saltwater

    Good morning lauri and MEKANIKEREN, Thank you for your input. There is indeed an inspection program for these tanks; however, some bad decisions were made. Suffice it to say that if the inspectors recommendations had been acted upon, I wouldn't be asking these questions... Have a great...
  2. DouglasD

    Corrosion rate of steel in saltwater

    Hello MEKANIKEREN, Thank you again for your additional comments. I concur that the conditions in the tank are probably very similar to an offshore oil platform or similar structure. The interior of the tank is indeed coated; however, as the coating breaks down over time, the bare steel is...
  3. DouglasD

    Corrosion rate of steel in saltwater

    Hello MEKANIKEREN, Thank you for your post. The information is well received. Let me give you a bit more information concerning the ballast tanks. These ballast tanks are on a US Navy amphibious ship. The tank is *sometimes* filled completely with saltwater, in which case zincs provide...
  4. DouglasD

    Corrosion Rates for Metals

    I'm looking for similar information. I am in the ship repair industry and trying to come up with a way to predict corrosion rates for a saltwater tank on a ship. The tank is sometimes filled with saltwater, in which case zincs provide protection against galvanic corrosion. Most of the time...
  5. DouglasD

    Corrosion rate of steel in saltwater

    The ballast tanks onboard a ship experienced much more corrosion than expected when opened for inspection. Consequently, insufficient funding was in place to accomplish the repairs. I have been asked to come up with a formula to predict the corrosion rate of steel that is exposed to saltwater...

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