PERMATANK

Underground Storage Tanks

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The petrochemical industry’s best value in underground storage tanks – Permatank®

This revolutionary design for hazardous liquid storage tanks was developed in the mid-1980s by the Permatank® Corporation of the USA. It was then known as the “jacketed tank”. It pioneered a lasting solution to environmental concerns.

Permatank® double-wall tanks are not subject to rupture, cracking or the types of failure typical of other secondary containment systems. Forgeweld has been manufacturing the Permatank® since 1992. Today we are one of the world’s major Permatank® producers and our market keeps growing.

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Secondary containment tank for complete peace of mind

The Permatank® is a tough-as-nails 6 mm carbon steel (355JR) primary tank enclosed within a secondary containment tank of rock-hard Fibreglass Reinforced Polyester Resin (FRP). The steel inner tank ensures structural strength and product compatibility while the FRP outer tank provides corrosion resistance and dependable secondary containment.

Shipped with a factory installed Precision Test System to ensure double-wall integrity, it is designed for peace of mind. The outer tank completely isolates the primary tank from the underground environment. This coating is checked for discontinuities by a 35 000 volt holiday test over the entire surface. Once the coat has cured, a vacuum of 75 kPa is drawn on the interstice between the inner and outer tank to provide moisture-proof tightness and longevity.

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The most effective leak detection system

Long-life performance assured

Exceeding the world’s toughest standards

Permatanks® conform to and exceed some of the world’s toughest standards

Warranty policy

All storage tanks manufactured by Forgeweld Engineering (Pty) Ltd carries a warranty against defective materials and workmanship for a period of 24 months from the date of installation.

Click here to read the full Warranty Policy.

Sizes

The tanks are supplied in standard sizes ranging from 5m3 to 45m3 but larger units can be manufactured on request.

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tank dimensions and capacity

VOLUME m3 IN. DIAMETER MM OUT. DIAMETER MM OVERALL LENGTH MM SHELL THICKNESS MM CALC. CAPACITY liters APPROX WIGHT kg
4,5 1810 1817 1900 6 4835 1106
9 1815 1817 3700 6 9161 1600
14 1810 1817 1900 6 4835 1106
23 1810 1817 1900 6 4835 1106
30 Long 1810 1817 1900 6 4835 1106
30 Dumple 1810 1817 1900 6 4835 1106
23 1810 1817 1900 6 4835 1106
30 Long 1810 1817 1900 6 4835 1106
30 Dumple 1810 1817 1900 6 4835 1106
23 1810 1817 1900 6 4835 1106

 

Click here to download our Permatank brochure (PDF)

To order click here to contact your nearest Forgeweld office.