Structural integrity assessments are important for the protection of the environment, offshore crew and company status. Marine structures, through the lifetime, must be maintained by a reliable management system of inspections, repairs and coatings protections. Planned thickness measurements are necessary to update the structure conditions and certify the operation in the marine environment. By these inspections is possible to calculate corrosion rates using statistical regression methods and time dependent corrosion curves. Corrosion rates analysis may well alert structure integrity problems and predict future corrosion tendencies. This study shows the application of field information by using a time dependent corrosion model. This method can be found on asset structure integrity management system [1], which is dominant in the offshore Brazilian industry.

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