FOR STEEL POTABLE WATER TANKS INTERIOR AND EXTERIOR CORROSION PROTECTION. Hydro-Zinc

Transcription

1 FOR STEEL POTABLE WATER TANKS INTERIOR AND EXTERIOR CORROSION PROTECTION Hydro-Zinc

2 KEY BENEFITS TENACIOUS ADHESION EASY APPLICATION FAST CURE GALVANIC PROTECTION NSF/ANSI STD. 61 CERTIFIED LOW TEMPERATURE APPLICATION (35ºF) UNLIMITED MAXIMUM RECOAT WINDOW WITH SELECTED TOPCOATS MEETS AWWA D102 STANDARD FOR INSIDE SYSTEM NOS. 3 AND 5 AND OUTSIDE SYSTEM NOS. 4 AND 6

3 Protecting potable water tanks is essential. Used by nearly every city, town and water district, water tanks must stand protected from costly and damaging corrosion. Detrimental not only to a tank s functionality but the owner s budget as well, the rehabilitation of a corroded tank is an extremely costly issue due to the extensive labor, material cost and downtime involved with tank repair. Fortunately, there is a time-tested way to protect tanks against such corrosion Hydro-Zinc from Tnemec. As an innovator in the industry, Tnemec was the first to use organic zinc-rich primers in potable water immersion with the introduction of Series 91-H 2 O Hydro-Zinc in 1997, and today has proven performance and unrivaled success. right: Sumter, SC

4 right: Clarksville, TN THE PRODUCTS Series 91-H 2 O and Series 94-H 2 O Hydro-Zinc are zinc-rich, moisture-cured urethane primers, both NSF/ANSI Std. 61 certified for use on potable water tanks. These primers provide unmatched corrosion protection to the interior and exterior of steel water tanks, eliminating the need and added cost of two different primers. Hydro-Zinc also cures quickly and can be topcoated at surface temperatures as low as 35 F (2 C). The Hydro-Zinc primers vary only in the number of components. Series 91-H 2 O is a twocomponent primer while Series 94-H 2 O is a single-component primer. Each product, when topcoated as part of a complete system, can be expected to last 40 to 50 percent longer than the typical three-coat epoxy system, giving water tanks the protection they need for the long haul. One coat of Series 91-H 2 O Hydro-Zinc, then two coats of two-component epoxy Standard three-coats of two-component epoxy SALT SPRAY EXPOSURE TEST Both panels were SSPC-SP10 abrasive blasted, coated and then placed in a salt fog cabinet (ASTM B 117). After 10,000 hours of Salt Spray (Fog) exposure, the panel primed with Tnemec s Series 91-H 2 O (left panel) exhibited no failure on the plane surfaces and excellent protection at the scribe. The standard three-coat epoxy system on the right did not measure up nearly as well.

5 JOLIET, IL Adjacent to the Chicagoland Speedway and named the SPFA s Tank of the Year in 2001, this one-milliongallon water tank garnered a truckload of attention after completed using a Tnemec coating system. When erected, the interior and exterior steel received a spray-applied prime coat of Series 91-H2O Hydro-Zinc, followed by a high-performance intermediate and finish coat. After more than a decade in service, Joliet s water tank is a long way from the finish line, still standing tall and shining high above the racetrack. Hydro-Zinc continues to perform in a wide variety of environments, from the cold winters in Chicago to warm and rainy summers in South Florida. After years of evaluation and research, Hydro-Zinc was applied to its first water tank interior in 1997 and became the first zinc-rich primer to be certified in accordance with NSF/ANSI Std. 61. Since then, these primers have been applied to over 10,000 water tanks around the globe. REGULATION FRIENDLY The properties of Hydro-Zinc make it an excellent choice for priming both sides of steel plates in the largest fabrication shops and for subsequent use in the field after tank erection. It is compliant throughout North America with versions featuring low hazardous air pollutant (HAP) levels and less than 100 grams per litre volatile organic compounds (VOCs). below: Raymore, MO

6 ROSEMONT, IL Tnemec s first Tank of the Year, Rosemont, IL, sports an intricate rose design that stands protected by a coating system with Hydro-Zinc at its core. In need of coatings that would last after having been repainted twice in less than a decade, a high-performance Tnemec coatings system was used on the 2006 Tank of the Year. Hydro-Zinc was spray-applied to the exterior of the tank, followed by an acrylic polyurethane, then the rose design was applied with Tnemec s long-lasting fluoropolymer, HydroFlon. Protected with advanced coating technology, tanks like Rosemont will remain intact for years, even decades, with Hydro-Zinc underneath.

7 INSPECTIONS As the leading provider of coatings for water storage tanks, Tnemec has monitored field evaluations of its Hydro-Zinc primer since its first use. Divers performing inspections have described the interior surfaces as being in very good condition with coatings 99.9 to 100 percent intact. Many inspections performed more than a decade after the original applications have provided evidence that the existing coating systems have not deteriorated and continue to provide enhanced corrosion protection. right: York Township, IL

8 INNOVATION IN EVERY COAT Tnemec Company Inc Corporate Drive Kansas City, Missouri TNEMEC1 Fax: Published technical data, instructions, and pricing are subject to change without notice. Contact your Tnemec technical representative for current technical data, instructions, and pricing. Warranty information: The service life of Tnemec s coatings will vary. For warranty, limitation of seller s liability, and product information, please refer to Tnemec Product Data Sheets at or contact your Tnemec technical representative. Tnemec Company, Inc Printed in the USA. HW2.5M1215 BROHZ