Aboveground Storage Tanks (AST)
Protected, thermally insulated secondary containment tank.
Fire-tested, double-wall tank.
Underground Storage Tanks (UST)
Find a Fabricator
STI Technologies are available from an extensive group of Steel Tank Institute fabricators. Find an STI/SPFA fabricator member for your next shop fabricated tank project.
STI Shop Fab
Specifications, technical documents, and inspection forms for STI Technologies, for members only.
Fuel Storage System Maintenance
Maintenance of your fuel system can extend its life. Allowing water to accumulate in fuel storage systems can cause fuel degradation and damage the entire storage system.
Aboveground Storage Tank FAQ
Do you have questions about aboveground storage tanks? STI/SPFA has compiled a list of commonly asked questions. If you cannot find an answer to your question, feel free to reach out to STI/SPFA staff.
All steel tanks are compatible with all blends of fuels meeting ASTM standards. Ethanol blends from E10 to E100 and blends of biodiesel from B2 to B100 can be stored in steel tanks. Recent work has been performed to assess the viability of fuel blends using Isobutanol. Members can access STI/SPFA’s fuel compatibility statement to use with customers.
Quality Control Program
Shop Fabricated tank members licensing STI technologies are subject to periodic inspections by STI/SPFA’s Quality Control inspectors. This program ensures the highest quality manufacturing process.