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‘Pipe in Pipe’ Double Skin Bunded Pipe Work – Fuel Oils

Twin Walled Pipe, also known as pipe-in-pipe or bunded pipework. This secondary contained pipe system has become an industry standard. Ideal for underground petroleum, fuel oils and chemical pipework. For example, UPP from Franklin Fuelling is an HDPE (high-density polyethene) pipe. Similarly, both inner and outer pipes are made from HDPE to add extra protection to the environment.  Our qualified installation engineers, certified by Franklin Fuelling, are experienced in installing the UPP pipework system. Above all, it comes complete with leak detection capability and the highest levels of environmental protection.

Advantages of Bunded Pipe Work.

Double wall, pipe in pipe manufactured in HDPE has many advantages over traditional steel pipe. This is largely down to no mechanical joints.  A classic weak point in most pipe systems. UPP is an Electro-fusion welded system. For complete peace of mind. Other advantages include:

  • Longer coil lengths (up to 100m) allows for fewer joints. For faster installation.  It also allows for sweeping bends – again meaning fewer joints.

  • Fewer joints mean fewer points of failure in piping systems and a more reliable fuel system.

  • Electro-fusion welding ‘Gemini System’ for fast installation & strong, leak-proof assemblies.  Which allows direct burial.  No need for inspection chambers.

  • HDPE is corrosion resistant, unlike their steel counterparts.

  • Integral EVOH liner gives great chemical compatibility for hydrocarbon and alcohol-based fuels, AdBlue and De-icer.

  • Smooth bore gives low resistances for efficient pumping.

  • The unique system brings unmatched resistance to ground movement.

  • ‘Over Pressure’ leak detection for the highest levels of environmental protection and continuous monitoring.

Fuel Delivery Pipe.

The primary pipe allows for the safe transfer of fuel within the fuel delivery system. So, the principal function of this is to connect the bulk fuel tank to the dispensing pumps, day tank or appliances. Consequently, the flexible pipe and fittings allow for curves and gradual bends to your storage tank. However, we have Tee fittings and elbows for branching the pipe and confined transitions.

Leak Detection.

The continuous secondary outer allows an overpressure leak detection system to be used.  Therefore, provides the best environmental protection and monitoring standards. With alarm systems and connection to a BMS system.

Our trained and qualified engineers have experience in installing this system.  Including pressure testing & certifying the installation.  We also install industry-leading Mapress pipe in stainless steel with specific seals for the media being piped.

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