Aboveground Storage Tanks (AST)
FIREGUARD®
Protected, thermally insulated secondary containment tank.
FLAMESHIELD®
Fire-tested, double-wall tank.
F921®
Double-wall steel tank.
GENERATOR BASE TANKS®
Safe and sturdy support for your backup or emergency power.
Underground Storage Tanks (UST)
ACT-100®
Steel/FRP composite tank.
STI-P3®
Cathodically protected steel tank.
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.
Standards
STI Shop Fab
Tank Section
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.
Fuel Compatibility
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.
Tank Manager
Register STI Technologies, manage registration and label numbers, purchase label kits, and view valuable reporting and market data.
Tank Capacity Calculator
Choose the unit system, select the tank shape and orientation, and fill in the measurements to calculate the capacity of your steel storage tank.
Vertical Tank Support Program
Ensure compliance and streamline your tank design process with our cloud-based validation program for vertical storage tanks. This program verifies the structural validity of support legs for both single- and double-wall vertical tanks to UL 142 standards.
SP001 Standard for Aboveground Tanks
The Standard for the Inspection of Aboveground Storage Tanks (SP001) provides inspection and evaluation criteria required to determine the suitability for continued service of aboveground storage tanks, as defined in this Standard, until the next scheduled inspection.
