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Belowground Double Skinned Storage Tanks
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Capacity of 130,000 litres

Below Ground Double Skinned Storage Tanks

JA Envirotanks Belowground Double Skinned Storage Tank is the current recommendation for the storage of Hazardous fuels and chemicals below ground level, offering continuous protection to the surrounding environment.

The inner tank is generally manufactured in accordance with BS EN 12285-1 With it's unique Leak Monitoring System the double skinned below ground storage tank will warn you if failure should occur without any loss of product.

The Storage tank is produced from Certified Carbon Steel for strength and protected externally with two coats of black bitumen or a tough corrosion resistant polyurethane coating, spark tested prior to despatch. The cavity between the inner and outer skin is filled at our works with specialised leak monitoring fluid and sealed prior to despatch.

Designed for 98% containment of product and is supplied with overfill prevention valves.

The below ground double skinned storage tank is normally delivered by our own fleet of vehicles in order to ensure delivery schedules are maintained.

Since being established in 1857 JA Envirotanks are one of the leading suppliers to Industry, our design is similar to storage tanks installed in Europe for the last 20 years.


  • Continuous monitoring for total environmental protection
  • Product stocks are safely contained
  • Tank continuously under test throughout it's life
  • Tanks can be encased in a suitable granular or concrete back fill
  • Multi compartment tanks available to customers requirements
  • Simplicity of design reduces costly site time
  • Manufactured at our Birmingham facility ideally situated on the hub of the UK motorway network.

Additional Fittings

  • Holding down straps
  • 600mm I/D manway access covers
  • Contents gauges
  • Dipsticks
  • Overfill prevention valve with or without offset fill adapters
  • Internal fill pipes
  • Internal suction pipes
  • Leak detection device (intrinsically safe) complete with reservoir, alarm unit, relay and probe
  • Installation kit for leak detection device
  • Four litre container of leak detection fluid for filling reservoir on site
  • Flanges for connecting GRP access chambers
  • High Accuracy Guaging Systems
Below Ground Double Skinned Storage Tanks - Technical Drawing