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Fireguard (1)

STI FIREGUARD®

FIREGUARD® double-wall fire-protected aboveground storage tanks features an inner steel tank with a unique lightweight thermal insulation material that allowed Fireguard to exceed the UL 2-hour fire test.  The insulating material is 75% lighter than concrete, reducing shipping, installation, and relocation costs.

WATCO TANKS

FIREGUARD® Features:

Fireguard for website (1)
  • Meets UL 2085, NFPA 30/30A, IFC, CARB, AND STI F941
  • Insulates product in the tank from ambient temperature variations, reducing emissions to the environment
  • Primary and secondary tanks can be tightness tested on site with standard testing procedures, unlike other designs
  • Primary storage tank and secondary containment compatible with a wide range of fuels and chemicals, including biodiesel and ethanol
  • Steel outer wall provides low-cost maintenance and protection from weathering
  • Interstitial space can be monitored for leak detection
  • Support designs available for all seismic requirements

Additional Features:

  • Built to nationally-recognized STI Standards with strict third-party quality control inspection program
  • Horizontal and rectangular designs are available
  • Steel is the green choice – it is capable of being recycled after tank closure
  • Low-cost compartments and customization
  • Capacities range up to 30,000 gallons

FireGuard Tri-Fold (1)
Watco Tanks

Fireguard® Double-Wall Fire-Protected Aboveground Steel Storage Tanks

  • Steel Tank Institute Fireguard and UL Labeled
  • Lightweight thermal insulation for fire protection
  • A variety of UL-approved supports are available
  • Compatible with a wide range of fuels and chemicals
  • Capacities range up to 30,000 gallons
  • Easily relocated
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Fireguard® Guideline Specification

General
  1. Provide Fireguard double-wall Fire-Protected lightweight steel aboveground storage tanks.

Labeling
  1. Tanks shall bear the Steel Tank Institute Fireguard identification label.
  2. Tanks shall bear Underwriters Laboratories UL 2085 label for Protected Tanks.

Manufacturer
  1. The manufacturer shall be a licensed member company of the Steel Tank Institute and subject to Steel Tank Institute’s Quality Assurance program.
Product Description
  1. Tanks shall be manufactured following Steel Tank Institute's standard for Fireguard Thermally Insulated Aboveground Storage Tanks.
  2. Tanks shall meet the requirements for “protected” tank as defined by the IFC and NFPA 30.
  3. Tanks shall consist of an inner steel wall and an outer steel wall separated by at least 3 inches of insulation.
  4. A lightweight monolithic thermal insulation material shall be placed in the tank’s interstitial space by the manufacturer. The thermal insulating material shall allow liquid to migrate through the interstice to the monitoring point, shall not be exposed to weathering, and shall be protected by the steel secondary containment outer wall.
  5. Integral secondary containment shall be testable and provide access for interstitial leak detection monitoring.
  6. UL-listed supports shall be used for all horizontal, rectangular, and vertical tank(s).
  7. Primary tank to have vent and emergency vent. The secondary tank shall have an emergency vent.

Trusted Watco Tanks Affiliates

Watco Tank Manufacturing Shot

Top U.S. Producer of STI Technologies

Watco Tanks was recognized as the largest U.S. producer of STI Technologies in 2021 and the second-largest worldwide, with over 5 million gallons built in 2021 and over 6 million gallons each in 2022 and 2023.

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