Above ground storage tanks 1. Inner walls Coating degradation Corrosion due to water/dissolved oxygen insufficient/damaged cathodic protection system dissolved sacrificial anodes 2. Outer walls/roof Atmospheric corrosion coating degradation due to moisture + UV radiation + temperature Erosion and wear due to wind and dust particles biological growth at the bottom areas near soil soil corrosion near the bottom 3. Pipes Atmospheric corrosion Coating degradation mechanical failure internal corrosion due to water/dissolved oxygen crevice corrosion in areas facing away from atmosphere corrosion at welds and joints microbial corrosion at 6 o' clock positions erosion corrosion at bends 4. Railing Coating degradation Wrong coating selection based on pure aesthetics coating damage at joints and bends corrosion at welds in the railing crevice corrosion at fixtures pitting corrosion 5. Breather valve uniform corrosion/pitting depending on whether it is made up of carbon steel/stainless steel...
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