Standard for Double Bottom Steel Storage Tanks (F051)

The Standard for Double Bottom Steel Storage Tanks (F051) covers manufactured steel storage tank in sizes up to 60,000 gallons and all ranges of shapes. Typical shapes include cylindrical horizontal, cylindrical vertical, obround and rectangular. This standard addresses the addition of an external second bottom for the purpose of detecting and containing product in the event of a leak in the bottom of the primary tank. 

Topics include:

• Design Criteria
• Weld Joints
• Monitoring Pipe
• Monitoring Interstitial Space
• Corrosion Protection
• Tightness Testing

This standard for double bottom tank construction is based on the application of sound engineering principles and the combined experience of the STI membership. It represents a composite of data from users, manufacturers, regulatory authorities and consultants. 

Revised: May 2015

Format: PDF