2018 Las-Vegas : Pipeline replacement in Las Vegas
Author(s) : Roger Jordan, Ryan Benner, Greg Kodweis
The Las Vegas Valley Water District (District) delivers water to approximately 1.4 million residents within the City of Las Vegas and unincorporated Clark County. The District maintains more than 4500 miles of water pipeline ranging from 4-inches to 102- inches in diameter, as well as another 2,000 miles of...
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,...
2012 Barcelona : The water for the world™ initiative: reflection on 5 years of experience
Author(s) : Jane Toogood, Dorothea Wiplinger, Christophe Salles, David Walton
Securing access to safe water and sanitation is recognised as one of the world’s most
pressing societal and environmental challenges.
Launched in 2007 by Borealis and Borouge,‘Water for the World’ is a programme
platform to advance solutions, expertise and know-how to address this challenge.
Activities are grouped in...
2006 Washington DC : Promoting Investment and Quality in the Local Infrastructure in Italy
Author(s) : Catanzano, Bosetti, Walton, Serrao
The development of gas, water and sewerage networks greatly enhanced city life in the late
19th and early 20th Century providing much needed street lighting and dramatically reducing
water borne disease. Understandably in many European cities these underground piping
systems are now showing serious signs of their...
2006 Washington DC : Replacing London's Victorian Water Mains
Author(s) : 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...
2004 Milan : 20+ Years Experience with PE Pipe for Water in the UK
Author(s) : Headford, Hill, Wilson
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...
2004 Milan : The Above Ground Design of Plastic Pipe Systems for Process Fluids
Author(s) : MacKellar, Headford, Ingham
This paper provides an overview of the basic properties of plastic pipes, in the range 50mm to
400mm, and how these should be used in the design of above ground process pipe systems
made of PE and PVC. It covers the basic properties of plastics, examples of the determination
of load cases and describes the basic types...
2001 Munich : Butt Fusion Welding of Large Diameter/Thick Wall Pipes
Author(s) : Hill, Wilson, Headford
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...
1998 Gothenburg : Jointing Methods for Plastics Pipeline Systems
Author(s) : Headford
Jointing Methods for Plastics Pipeline Systems AL Headford (Durapipe S & LP, UK) ee Introduction The basic requirements for pipe Jointing are common to all pipe systems made from any material (including traditional materials), whether they be for sealed pressure usage or non-pressure usage. These are
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...
1995 Edinburgh : High Integrity PE Stub Flange Connections
Author(s) : Headford
A novel polyethylene stub flange adaptor is described which allows size-for-size connection, in terms
of the respective bores, to iron pipes or fittings. The end load performance of this product is
significantly superior to that achieved with conventional polyethylene flanges, especially at large pipe
1995 Edinburgh : Taking the stress and strain of buried thermoplastic pipe design
Author(s) : Boot, Headford
This paper summarises current design practices for buried thermoplastic pipelines subjected to combined
gravity and internal pressure loadings. It suggests that accurate predictions of stabilised deformations are
neither possible nor necessary, but that appropriate structural design methodologies should instead...
1995 Edinburgh : The Resistance of PE Water Pipeline Systems to Surge Pressure
Author(s) : Beech, Headford, Hunt, Sandilands
The guldeUnes g h n in BS CP 312 :Pwt 2 : 1973 w e recommended to the UK toater
industryfor the deslgn of polyethylene pfpeline systems to toke inin account the
effects of tmnsient [surge) pressurejluctuatlons with respect to fatigue (ref.1). These
guIdelInes we based on earlier experience wlth PVC-Usewer h i n g...
1988 Bath : Electrofusion - A new System
Author(s) : Walton, van Houten
Electrofusion fittings have now been widely
accepted within the European Gas Industry for
jointing polyethylene pipe. with a high
potential demand for electrofusion couplers,
Wavin applied its plastics process knowledge
to develop an efficient and cost effective
co-extrusion manufacturing technique. In this
1988 Bath : The Long Term Behaviour of Buried uPVC Sewer Pipe
Author(s) : Walton, Elzink
One of the main reasons that plastics have not
found more extensive use in non pressure sewer
schemes has been concern about the long term
deformation characteristics of the pipeline.
In order to investigate this phenomenon the
flexural behaviour of u W C sewer pipes installed
in Western European countries, including...
Development of a UK Specification for PE Barrier Pipes
Author(s) : Shepherd, Water, Hill
Middle East's largest HDPE Pipe Project - Borouge 2 Sea-Water Cooling Lines
Author(s) : Walton, Al Mehairi, Ebner, Jepson