The tank's outer wall is separated from the steel tank by a special plastic sheet to create an annular space and an access fitting is provided for installation of leak detection sensors. Every FRP jacketed steel tank is hydrostatically tested at the factory to 10-psi. In addition, each tank is subjected to 15-inches Hg vacuum test and ultrasonic thickness test to ensure the quality and integrity of the product. Features UL listed for corrosion protection and secondary containment Fiberglass jacket (UL 1746) that dielectrically isolates a UL-58 steel tank from the environment Inner steel tank can be compartmentalized Low cost, double-wall tank with provision for interstitial space monitoring
