Our site uses cookies necessary for its proper functioning. To improve your experience, other cookies may be used: you can choose to disable them. This can be changed at any time via the Cookies link at the bottom of the page.

Replacing London's Victorian Water Mains



Plastic Pipes Conference Association # 2006 Washington DC

Becker, Shepherd

In common with most other major cities around the world, London has grown outwards from the centre as its population has increased. What may not be appreciated is that this holds true not only for the roads and buildings but also for the buried infrastructure, particularly the water mains and sewers, which were the first utilities to be installed. This has resulted in the present situation where over half of the water mains in London are over 100 years old and a third are over 150 years old. Thames Water has embarked upon a programme to replace 1235 kilometres (772 miles) of these pipes over the 2005 – 2010 AMP (Asset Management Plan) period at a cost of £500 million ($800 million). This paper will describe the rationale of a work targeting strategy, pipeline system selection and provide illustrations of the problems and solutions of carrying out a major mains replacement project in a congested urban area.

Please note that the whole article content is available on PPCA website only :

Related papers

2014 Chicago : A Training and Certification Standard for Fusion Welding of PE Pipes

Author(s) : Edward Ingham, Mike Shepherd

Exova has previously demonstrated that under normal operating conditions PE 100 pipes would be expected to have a lifetime of over 200 years, but in the UK concerns have been reported about relatively high failure rates within the water utilities of fusion joints, particularly for large diameter pipes. For some time,...

2006 Washington DC : Development of a Whole Life Costing Model for Large Diameter Water Mains

Author(s) : Shepherd, Headford, Jordan, Reeves, Walton

In Europe polyethylene (PE) has been chosen almost exclusively for gas mains for many years because of economic, technical and safety reasons but in the water industry a number of different materials are still used for pressure water mains. Indeed at sizes above 355mm (14 inch) most new large diameter water mains are...

2004 Milan : Factors Affecting the Use of PE Pipeline Materials for Large Diameter Water Mains

Author(s) : Shepherd

Polyethylene pipeline systems have now been used with considerable success by the UK Water Industry for over twenty years. Most, if not all, water companies now regard polyethylene as the default material choice for all normal distribution system applications. i.e. up to 300mm nominal diameter. However, for larger...

1998 Gothenburg : Plastic Pipeline Systems

Author(s) : Shepherd

This presentation is written from the perspective of the water industry and is therefore mostly concerned with pressure pipes for potable water as this is far and away the biggest area of use of plastic pipe systems. The Water Industry has been constructing its pipe network for over 150 years and it has been estimated...

Development of a UK Specification for PE Barrier Pipes

Author(s) : Shepherd, Water, Hill

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationHanwha TotalEnergiesINEOS O&PIRPCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellORLEN UnipetrolPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE