Specification for PERMATANK® (F922)

The Specification for PERMATANK® (F922) covers a method of underground exterior corrosion control for steel tanks. The method, termed PERMATANK®, combines a steel inner tank within a fiberglass reinforced plastic outer containment and can be equipped with an optional interstitial leak detection monitoring system.

Topics include:

• Compliance
• General Requirements
• Dielectric Bushings
• Tightness Testing
• Application of Outer FRP Containment Wall
• Completion

All portions of this Specification are the proprietary information of Steel Tank Institute (STI) and/or its Licensees/Fabricators. Use, reproduction or publication of this material by other than STI/SPFA and/or its Licensees/Fabricators is strictly prohibited without written permission from STI PERMATANK® is manufactured and sold under U.S. Patent No. 4,640,439.

Revised: July 2019

Format: PDF