Polyethylene has many virtues as a material for underground potable water hstribution
pipes. Unlike ferrous metals, it is totally immune to corrosion, and is extremely
resistant to chemical attack from any aqueous media. However it has one minor
weakness - it is slightly permeable to hydrocarbons, and other organic species. When
buried in former industrial land that is contaminated with these materials, minute
quantities may penetrate the pipe wall and generate undesirable taste and odour to the
delivered water. This is still a very uncommon event, but legslation and increasing
environmental pressure to preserve the countryside and re-use former industrial land in
city areas, plus a need to pre-empt a less desirable alternative, has g v e n emphasis for a
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A multilayer pipe named Excel Plus® made with a protective inner layer in PVDF
was developed by GPS PE Pipe Systems, an Aliaxis group subsidiary. In order to
assess, in accelerated mode, the resistance of this pipe against chlorine dioxide, a
test sample exposure facility was built at the Aliaxis corporate R&D centre....
The United Kingdom is the most highly developed PE pressure pipe market in the world.
Following pioneering work done in the USA and Germany, it was the UK that was first to
adopt PE on a large scale for gas, and then for water distribution. The 100% PE policy of
British Gas, and wide range of sizes used (at low...
Butt fusion welding is the most reliable and unobtrusive method of joining PE pipes
(and spigot fittings) of virtually any size-except perhaps the smallest where other methods
are usually preferred. It is the dominant method of jointing both medium and large pipe
sizes, but for different reasons. In medium pipe sizes...
Transco, part of the Lattice Group, is the largest Public Gas Transporter in Great Britain. It
currently operates a Distribution system of some 250,000 kilometers.
Developments in polyethylene pipe technology have led to an ongoing increase in the size
of pipe being laid in the U.K. Currently, pipes up to 630 mm...
It is almost 30 years since BG ple (formerly British Gas) installed the first polyethylene gas distribution pipeline in the United Kingdom. At that time, there was little experience in the failure mechanisms associated with PE materials and therefore the predicted lifetime, although scientifically sound in approach...
Development of a UK Specification for PE Barrier Pipes