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Overcoating Lead Based Alkyd Paint on Steel Penstocks: Practical Experience Using a high Ratio Calcium Sulfonate Alkyd (HR CSA) System

Overcoating Lead Based Alkyd Paint on Steel Penstocks: Practical Experience Using a high Ratio Calcium Sulfonate Alkyd (HR CSA) System
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This paper describes key technical attributes of an innovative high ratio calcium sulfonate alkyd (HR CSA) overcoat system, and how they allowed for the successful overcoating of a lead-based alkyd paint system on a penstock exterior at a Canadian hydroelectric facility, utilizing only 5,000 psi pressure washing for surface preparation. The case history provided outlines how the coating system also lent itself well in helping to solve different crevice corrosion issues.

Product Number: 41209-498-SG
Author: Mike O’Donoghue, Peter Roberts, Vijay Datta, Terry McManus
Publication Date: 2009
Industry: Coatings
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$20.00
$20.00

While it remains axiomatic that good surface preparation is critical to the success of a coating application it is equally pivotal that overcoat systems are selected with utmost care where particular attention is given to their chemistry and physical properties, performance history and the intended service environment. This paper describes key technical attributes of an innovative high ratio calcium sulfonate alkyd (HR CSA) overcoat system, and how they allowed for the successful overcoating of a lead-based alkyd paint system on a penstock exterior at a Canadian hydroelectric facility, utilizing only 5,000 psi pressure washing for surface preparation. The case history provided outlines how the coating system also lent itself well in helping to solve different crevice corrosion issues.

While it remains axiomatic that good surface preparation is critical to the success of a coating application it is equally pivotal that overcoat systems are selected with utmost care where particular attention is given to their chemistry and physical properties, performance history and the intended service environment. This paper describes key technical attributes of an innovative high ratio calcium sulfonate alkyd (HR CSA) overcoat system, and how they allowed for the successful overcoating of a lead-based alkyd paint system on a penstock exterior at a Canadian hydroelectric facility, utilizing only 5,000 psi pressure washing for surface preparation. The case history provided outlines how the coating system also lent itself well in helping to solve different crevice corrosion issues.

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