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Study to Determine the Feasibility of Overcoating Coal Tar Enamel with Foul Release Coatings

Project ID: 3104
Principal Investigator: David Tordonato
Research Topic: Repair and Maintenance
Priority Area Assignments: 2011 (Zebra and Quagga Mussels)
Funded Fiscal Years: 2011
Keywords: None

Project Abstract

Coal tar enamel provides superior corrosion protection and service life which is unmatched by modern coating systems. The cost of deploying a foul release coating could be lowered if the new system could be applied without removal of the coal tar enamel i.e. overcoating. Laboratory evaluations were conducted on four promising foul release coating systems. It was determined that overcoating is not recommended due to catostropic failures observed in testing.

Contributing Partners

None

Research Products

Bureau of Reclamation Review

The following documents were reviewed by experts in fields relating to this project's study and findings. The results were determined to be achieved using valid means.

Investigation of Overcoating Coal Tar Enamel with Foul Release Coatings (final, PDF, 1.0MB)
By Dr. David Tordonato and Dr. Allen Skaja
Report completed on October 01, 2011

Coal tar enamel provides superior corrosion protection and service life which is unmatched by modern coating systems. The cost of deploying a foul release coating could be lowered if the new system could be applied without removal of the coal tar enamel i.e. overcoating. Laboratory evaluations were conducted on four promising foul release coating systems. It was determined that overcoating may be inadvisable due to catostropic failures observed in testing.
Keywords: coal tar enamel, overcoating, foul release coatings, zebra mussel, quagga mussel

This information was last updated on December 20, 2014
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