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Evaluation of a Proprietary Tape Coating Alternative for the 157 Mile Ivie Pipeline

by Risque L. Benedict, Corrosion Consulting Service Corp, Fallbrook, United States,



Document Type: Proceeding Paper

Part of: Pipeline Infrastructure II

Abstract:

A two part evaluation of alternative protective coating systems for the 157 mile Ivie pipeline was made. In Part I, an evaluation was made on the suitability of a proprietary tape coating system based on two criteria. The first criteria is how long the tape coating system has been in service in relation to the required service life on the Ivie pipeline. The second is the perceived reputation of the tape coating system with end users. Both criteria must be met for the proprietary tape coating system to be recommended on this project. Based on our study, neither criteria could be met, and so the proprietary tape coating system was rejected as an alternative. In Part II, a technical evaluation was made using the 30 mil anti-corrosive innerwrap of the proprietary tape system augmented with a one inch of exterior mortar for mechanical protection. The Phase II study indicated that this was a viable system for at least a 50 year life with the caveat that no cathodic protection be used because of the danger inherent in disbondment if excessive cathodic protection was applied.

Subject Headings: Coating | Pipeline management | Service life | Water pipelines | Protective structures | Pipelines | Corrosion | Texas | United States

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