STI Tank Technologies

AST: Aboveground Storage Tanks

UST: Underground Storage Tanks

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 Tank Section

Specifications, technical documents, and inspection forms for STI Technologies. STI Shop Fabrication Section members only.

Access Documents | Tank Search

Quality Control Program

Quality control is a crucial aspect of all manufacturing processes. Therefore, member fabricators of the Steel Tank Institute’s licensed tank technologies are subject to periodic, unannounced inspections by a team of STI/SPFA Quality Control Inspectors.

Learn more

Aboveground Storage Tank FAQ

Get answers to commonly asked questions about aboveground storage tanks including differences between tanks and fire code information.

View FAQ

Education and Training

• Tank Integrity Management
• Petroleum Storage Tank Maintenance
• Regulation of Tanks Inside Buildings: A Guide for Users and Enforcers
• Tank Venting Essentials: PreVENTing Catastrophe

Codes and Regulations

Find information on federal and state fuel storage environmental regulations, chemical storage tank regulations, fire codes, and more.

Alternative Fuels

View compatibility studies for steel and alternative fuels/emerging fuels.

About Steel Storage Tanks

• Who are Owners of USTs?
• Cathodic Protection Testing FAQ
• SP001 Inspection Standard
• VIDEO: Test of FRP and Steel Tanks

Additional Resources

• Keeping Water Out of Your Storage System
• Storage Tank Venting Compendium
• Tank Capacity Calculators
• State Underground Storage Tank (UST) Programs
• Underground Storage Tank Flood Guide
• EPA’s Wildfire Guide: Preparation And Recovery For Underground And Aboveground Storage Tank Systems
• A Brief History of Octane in Gasoline: From Lead to Ethanol
• Performance Testing of Underground Storage Tank Against Buckling
• Fuel Storage Tank Owners/Operators: Protect Your Tanks, Reduce Your Downtime, Reduce Your Risk
• Preventive Maintenance Guide for Diesel Storage and Dispensing Systems
• Compatibility Considerations for UST Systems
• Emerging Fuels and Underground Storage Tanks (USTs)
• NIST Research on Ethanol “Corrosion:” What it Really Says
• Storage Tank Maintenance Standard (R111)
• Practical Guidelines for Fabrication of Duplex Stainless Steels
• EPA SPCC Rule Clarification - September, 2002
• Industry Websites

Archives

• New Underground Understandings as EPA’s 1998 Compliance Deadline Approaches

Position Papers

• STI Letter to PEMEX Discussing Flameshield and Fire Resistant Tanks (April 21, 2008)
• Insurance Position on Water and Tank Warranties (May 17, 2002)