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51318-10989-Steel Corrosion Rates in a Marine Environment under Failing Coatings

How corrosion of steel during the initial stages of coating deterioration can be substantial—in fact corrosion rates can exceed that of boldly exposed steel. Coating selection, design assumptions and maintenance intervals are discussed.

 

Product Number: 51318-10989-SG
Author: James A. Ellor, P.E.
Publication Date: 2018
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Corrosion rates of coated steel structures is generally assumed to be negligible while coating systems are intact.

However, recent testing and detailed inspection has found that corrosion of steel during the initial stages of coating deterioration can indeed be substantial—in fact corrosion rates can exceed that of boldly exposed steel.

These findings are also a function of coating type. The following paper discusses how these factors might be accounted for in coating selection and in design assumptions concerning structure life and appropriate maintenance intervals.

 

Corrosion rates of coated steel structures is generally assumed to be negligible while coating systems are intact.

However, recent testing and detailed inspection has found that corrosion of steel during the initial stages of coating deterioration can indeed be substantial—in fact corrosion rates can exceed that of boldly exposed steel.

These findings are also a function of coating type. The following paper discusses how these factors might be accounted for in coating selection and in design assumptions concerning structure life and appropriate maintenance intervals.

 

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