Generator System | 12,000 Gallon Above Ground Fuel Storage Tank & Polishing System


G-Fleet 12 | Above Ground Fuel Storage Tank & Polishing System
  • Description
  • System Maintenance
  • AXI Fuel Polishing
  • Fire Rating Options
  • Specifications


Envirosafe’s 12,000 Gallon generator fuel system is designed specifically to supply generators or boilers. The Envirosafe generator fuel tank is fully compatible with a wide range of fuels. Our generator fuel tanks are available in either Flameshield (UL-142) or Fireguard (UL-2085) configurations and can be manufactured as a single tank or in split designs for the supply of two different fuel products. Each system we sell is built in our on-site manufacturing facility and is fabricated in accordance with The Steel Tank Institute’s specifications as well as meeting all UL standards. Envirosafe’s generator fuel system comes with ground fills with a lockable box or top-fill options.


Fireguard tanks insulate product in the tank from ambient temperature variations, reducing
emissions to the environment

Available with dual compartments for multiple products in one tank with double bulkhead to prevent cross-contamination

Primary and secondary tanks are tightness tested on-site using standard air pressure test procedures

Steel outer wall provides low-cost maintenance and protection from weathering

Primary storage tank and secondary containment are compatible with a wide range of fuels and chemicals

Support designs available for all seismic requirements

Interstitial space can be monitored for leak detection

Available in self-contained double-walled and protected double-walled tanks

Turn-key, inexpensive installation, and startup

30-year tank warranty backed by the Steel Tank Institute


(1) UL-142 Flameshield or UL-2085 Fireguard Tank Mounted on Saddles

(1) Monitoring Well w/ 2” Cap

(2) 8” 8 Oz Emergency Vent Male w/O-ring

(1) 3” Stack Vent (12′ above grade) w/ 3” Updraft Vent

(1) UL Listed Lockable Fill Box Welded on Tank 3′-6” x 4′ x 4′-2”, Cross Broken for Easy Drainage, 2” Vent, 2” Mushroom Cap, & 1/2” Ball Valve

(1) 2” 918 Clock Gauge w/ Alarm & Standard Float for Accurate Fuel Level Reading

(1) Engineered Hurricane Tie Down

(1) Tank Decal Kit

(1) Envirolastic 940 DTM Polyaspartic Urethane Coating for High-Performance Finish

(1) Memco 1” Return Line Fitting Only

(1) 1.5” Pickup with Drop Tube and Foot Valve 6” From Bottom of Tank

(1) Interstitial Leak Gauge

(1) Overfill Prevention Valve with test mechanism & 3” Ground Level Fill

(Vertical Check Valve, Ball Valve, Fill Pipe w/ Diffuser, Fill Adapter, & Dust Cap)

(1) 18” Manway for easy inner tank accessibility

(1) ROM Door (Roll-Up) 3′ x 3′

(1) Ladder with Safety Shield

(1) UL Labeled & Listed (per your local Fire Marshall)


(1) Touch-up Paint

System Maintenance

Generator Tank & System Maintenance

The tank operator should preform periodic walk-around inspections to identify and repair areas of damage to the vessel or the coating itself and check for proper drainage around the tank area. It is imperative that the tank exterior be inspected periodically to ensure that the integrity of the coating is maintained. The frequency of periodic repainting will be based upon environmental factors in the geographic area where the tank is located. Special consideration should be given to the selected of the paint, surface preparation and coating application. The coating selected should be suitable for use with the current coating, or the existing coating should ne removed. The coating selected should be of industrial quality Proper site preparation and maintenance are vital to ensure drainage of surface water. Should ground conditions change or settlement occur, take the appropriate steps to maintain proper drainage and prevent standing water near or under the tank area. For diked tanks, remove any product spills immediately. Be sure to dispose of hazardous material properly. For diked tanks fitted with a drain, drain off water only. Drain openings are required to be maintained liquid tight. The primary tank shall be inspected monthly for the presence of water at the lowest possible points inside the primary tank. Remove any water found. Water and sediment in fuel can cause plugging of filters. Also, bacterial growth, originating form the fuel can cause corrosion of tanks and lines. For procedures on how to check for the presence of water and removal of water, refer to the STI R111, Storage Tank Maintenance/For copies of the RP and more information, please go to Failure to adhere with these maintenance instructions may void your warranty.

Tank relocation requirements – often aboveground storage tanks are relocated. The following instructions are to be followed when this occurs: All steps are to be documented and the documentation is to be kept for the life of the tank. The hazards associated with the cleaning, entry, inspection, testing, maintenance or other aspects of AST’s are significant. Safety considerations and controls should be established prior to undertaking physical activities associated with ASTs . Cleaning of tanks must be per state and local jurisdiction requirements. Refer to the STI Standard SP001, “Standard for the Inspection of Aboveground Storage Tanks” for requirements concerning tank inspections. The SP001 Standard details requirements for inspections based on the tank installation and age. A tank must undergo the appropriate insurance prior to relocation. In addition, the tank must be subjected to a pressure (or vacuum) test.

Fire Rating Options

Fireguard Benefits

  • Tested Four-Hour Fire Resistance
  • UL 2080 Listed “Fire Resistant”
  • UL 2085 Listed “Protected”
  • Both Inner & Outer Steel Tanks built to UL Standards
  • Uniform Fire Code UFC “Protected” Tank
  • National Fire Protection (NFPA) 30 & 30A
  • International Fire Code (IFC)
  • Ballistics Protection
  • Impact protection
  • California Air Resources Board (CARB) for Air Emissions
  • Steel Tank Institute (STI) Standard F941 for Thermally Insulated Aboveground Storage Tanks

Flameshield Benefits

  • Tested Two-Hour Fire Resistance
  • Built to UL 142 Standards
  • Tested by Southwest Research Institute to SwRI 97-04
  • Double-Wall Tanks Have Fully Monitor-able Interstitial Space for Leak detection


Fireguard Specs*

Capacity (Gallons) 12,000
Length (inches) 450″
Width (inches) 100.5″
Height (inches) 124″
Weight Empty (lbs) 35,300


Flameshield Specs*

Capacity (Gallons) 12,000
Length (inches) 438″
Width (inches) 96.5″
Height (inches) 120″
Weight Empty (lbs) 22,000

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A Proud American Manufacturer!

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1789 E CR 48, Bushnell, FL 33513

Headquarters, USA