PPG Protective & Marine Coatings has introduced two veteran solvent-free tank linings to the North American market and launched a third for the emerging fuels market.
As PPG’s Dr. Robyn McMillan explains, NovaGuard 840, NovaGuard 890 and SigmaGuard are solvent-free technologies designed to provide corrosion, solvent and chemical resistance as well as exceptional pit filling and tank bottom repair.
NovaGuard 840 tank coating combines the broad chemical resistance of phenolic, Novolac epoxy systems with the environmental advantages of a solvent-free product.
PPG says 840 is useful for a wide range of tank storage products, including chemicals, solvents, crude oil (up to 90°C/194°F) and refined fuels. The coating is also approved to Air BP F2D2 section 2.1 for storage of jet fuels.
NovaGuard 840 can be applied as a one- or two-coat system with a total dry-film thickness as low as 300 microns/12 mils per coat. Application is by standard single feed airless spray and brush or roll for repair and stripe coating.
NovaGuard 890 is a solvent-free, phenolic, Novolac epoxy tank lining that meets the latest chemical resistance requirements of the petrochemical industry, including all levels of ethanol in blends of gasoline and biodiesel grades.
The new coating is designed to address the needs of today’s petrochemical industry and its emerging fuel trends, including:
• Widespread use of ethanol as an oxygenate in gasoline:
• Increased use of biodiesel as a clean-burning alternative fuel; and
• Growing use of biodiesel and (bio) ethanol.
NovaGuard 890 is designed for application by standard airless spray equipment. It can be used for both new tank lining and major refurbishment of old tanks, including tank bottom repair as a reinforced lining.
Both NovaGuard products have a glossy finish, for easy cleaning and inspection, PPG says.
SigmaGuard CSF 650
A fixture of the petrochemical industry for 20 years, but new to North America, SigmaGuard CSF 650 is a solvent-free, single-coat, amine-cured epoxy tank lining.
Just one coat is required to provide protection for storage tanks holding crude oil (up to 60°C/140°F), aliphatic petroleum products, and a wide variety of chemicals, according to PPG.
This solvent-free formulation minimizes application hazards, and the coating is appropriate for lining new tanks and refurbishing old ones. In addition, the smooth, glossy finish enables easier cleaning and inspection.
SigmaGuard CSF 650 provides corrosion control, meets the requirements of Mil-C-4556E for resistance against aircraft fuel and fuel degradation, and is approved to Air BP for storage of jet fuels.
PPG says tanks lined with SigmaGuard CSF 650 have been opened and inspected 15 years after application and show no degradation, blistering or softening.
All three coatings can also be reinforced by chopped fiber glass or fiber glass mat.
An extended chemical resistance list for all three products can be found at TankSelect.
More information: http://www.ppg.com/coatings/pmc.