1. Double Ellipsoidal (DE)- Smaller sized leg tanks (50,000 to 150,000 gallons) are referred to as DE’s. This term means the roof to side shell connection is ellipsoidal and the bottom to side shell connection is also ellipsoidal, hence double ellipsoidal.
Torus Bottom (TB) - Larger sized leg tanks (200,000
gallon and larger) have a torus bottom shape to them,
Coatings Provide Corrosion Protection in Two Different Ways: 1 . Barrier Protection– Inhibit the corrosion process by eliminating the presence of electrolyte (most paint films) 2 . Galvanic Protection– Sacrificial or cathodic protection (zinc-rich primer)
Surface Preparation is vital in cleaning the surface of all contaminants and it also provides a profile for the paint film to anchor into (i.e.– good adhesion).
Paint Consists of Three Main Components: 1 . Resin 2 . Pigment 3 . Solvent
Generic Coating Types Typically Used in the Water Tank Industry: 1. Epoxy (Two Component) – Used for primer, intermediate and interior immersion – Hard, abrasive resistant – Chalk & fade when exposed to ultraviolet light 2. Zinc (Two Component) – Used for primer on interior or exterior – Galvanic/sacrificial properties 3. Polyurethanes (Two Component) – Used for exterior of tanks. – Strong color/gloss retention performance
Generic Coating Types Typically Used in the Water Tank Industry: (continued) 4. Acrylics (One Component) – Used for exterior repainting/overcoating existing tanks – Good adhesion properties – Imposes least amount of stress to older paint 5. Aluminum Alkyds (One Component) – Used for exterior repainting/overcoating existing tanks – Still some of these tanks around (Older tanks) – Utilizes aluminum flake pigment – Has “chrome”appearance to it
Interior System for a New Water Tank: Surface Preparation– SSPC-SP10 (Near White Blast Cleaning) One Coat System Field Applied: 1 . 100% Solids Ceramic Epoxy a) Stripe Coat/Seam Treatment applied wet on wet
First Coat: Apply one coat of Perma-Clean 100 Ceramic Epoxy to achieve 25.0-30.0 dry mils. Color: Pool Blue
Seam Treatment/Stripe Coat: Simultaneously with first coat, all weld seams, ladders, sharp edges, and any other difficult to coat areas shall receive one coat of Induron Perma-Clean 100 Ceramic Epoxy applied, by brush, at a rate to achieve 2.0 - 10.0 dry mils. Color: Pool Blue
Exterior System for a New Water Tank: Surface Preparation– SSPC-SP6 (Commercial Blast Cleaning) Three Coat System: 1 . Primer– Zinc or Epoxy 2 . Intermediate– Epoxy 3 . Finish– Polyurethane a) Clear coat optional
Specify Induron as a Standard of Quality for your Water Tank Projects – High Performance products – Strong and virtuous family-owned company – Conscientious and professional personnel – Focused and committed to the water industry – Unmatched service and support for your projects