Higher temperature coal tar enamel fights corrosion
- Reilly Industries, Inc., Indianapolis, IN (United States)
High temperatures create new challenges for pipeline coatings. Cracking, adhesion breakdown and electrochemical corrosion are accelerated by higher service temperatures. A new epoxy primer/coal tar pipeline coating system utilizes the latent heat of the coal tar application to fully cure the newly developed primer to achieve outstanding bonding integrity and high temperature cathodic disbondment resistance. A key reason for this overall high performance is the marriage of a newly developed epoxy primer that provides outstanding adhesion with coal tar enamel, which provides excellent long-term water resistance. The paper describes experimental studies, pilot plant application, cathodic disbondment testing, and results from hot water soak tests and the low temperature cracking test.
- OSTI ID:
- 392575
- Journal Information:
- Pipeline and Gas Journal, Vol. 223, Issue 10; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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