Open-top diked system
F911® is an aboveground steel storage tank system manufactured with built-in secondary containment. The tank is supported inside an open-top dike, which has a solid steel floor and vertical steel walls. The dike allows for secondary containment, monitoring, overfill containment and recovery of product.
F911® Features
- UL 142 listed for both primary tank and secondary containment outer tank
- Diked design offers integral secondary containment to meet EPA SPCC requirements
- Built to nationally-recognized STI and UL standards
- Primary storage tank and secondary containment compatible with a wide range of fuels and chemicals
- Customized compartments can be provided for cost-effective multi-product storage
- Capacities range from 300 to 20,000 gallons
F911® Benefits
- Steel construction allows for recycling
- Low cost compartments and customization
- Built to nationally‐recognized STI standards with strict third‐party quality control inspection program
F911® is available from an extensive group of Steel Tank Institute fabricators who participate in the STI Quality Control Program. Under the program, independent quality control inspectors make unannounced visits to STI members, ensuring fabrication to the highest possible standards.
F911® Publications
STI Tank Technologies
Aboveground Storage Tanks (AST)
Underground Storage Tanks (UST)
Featured Affiliate
The National Board of Boiler and Pressure Vessel Inspectors is the worldwide leader in pressure equipment safety. It was established in 1919 to promote greater safety to life and property through uniformity in the construction, installation, repair, maintenance, and inspection of pressure equipment.
www.nationalboard.org“STI/SPFA membership has been the single most important factor in the success of our company.”
Bob Nemeth
Stanwade Metal Products, Inc.




