YouTube video

Fire-tested, double-wall tank

FLAMESHIELD® aboveground storage tanks are manufactured with a tight‐wrap double‐wall design. Standard features include 2‐hour fire‐tested performance, built‐in secondary containment and interstitial monitoring capability.


  • 2‐hour 2,000° fire‐test, as required by Southwest Research Institute Standard SwRI 97‐04, validates performance of non‐insulated tanks
  • Primary and secondary tank can be tightness tested on site with standard testing procedures, or manufacturer may ship with vacuum in the interstice to prove integrity of both walls during installation
  • Interstitial space can be monitored for leak detection
  • Primary storage tank and secondary containment compatible with a wide range of fuels and chemicals
  • Support designs available for all seismic requirements
  • Choose from many integral support types, including saddles and skids
  • Vertical tanks supported on legs, and skirted available, with Listing label
  • Capacities range up to 75,000 gallons


Steel construction allows for recycling
Low cost compartments and customization
Built to nationally‐recognized STI standards with strict third‐party quality control inspection program

FLAMESHIELD® 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.


  • Aboveground
  • Tank Technologies