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NORA Oilheat Technicians Manual

Polyethylene/steel – These double wall tanks combine an inner tank made of polyethylene with a steel outer tank. The outer tank protects the inner tank and provides secondary containment. See Figure 3-11. Underground tanks Steel Sti-P3—These tanks combine the strength of steel with a factory installed corrosion protection system, Figure 3-12. Sti-P3 tanks feature: 1. A protective coating over the steel that prevents external corrosion 2. Sacrificial anodes that protect the steel 3. Nylon isolation bushings that electrically isolate the tank from the fill pipe, vent pipe, oil lines and other attached piping ACT-100 and ACT-100U These tanks include a much thicker protective coating and offer protection similar to the Sti-P3 without sacrificial anodes, Figure 3-13. Fiberglass (FRP) Fiberglass reinforced plastic tanks never rust because they are made from corrosion resistant materials, Figure 3-14. Once you’ve determined the right size, location and type of tank to install, you Chapter 3—Oil Tanks and Piping 3-9 Figure 3-11: Polyethylene/steel tank Figure 3-12: Underground steel tank Figure 3-13: ACT-100 Figure 3-14: Fiberglass (FRP) tank Chapter 3 Oil Tanks and Piping


NORA Oilheat Technicians Manual
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