2006 Washington DC : An Effective Barrier Pipe System for Contaminated Land
Author(s) : Christodoulou, Wilson, Hunter, Bowman
Polyethylene (PE) based and metallic pipe systems have been assessed for
their ability to stop petrol migrating through the pipe wall, fitting or joint and
into water contained within the pipe. A quantitative test was devised that is
capable of distinguishing between the different pipe systems. Plain PE pipe...
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 : 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...
2001 Munich : Developments of Flowstop Systems for Large Diameter PE Mains
Author(s) : Morgan, Hill
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...
1998 Gothenburg : Assessment of Pipe Systems, Condition and Residual Life
Author(s) : Hill
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...
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 : PE Pipes for Contaminated Land
Author(s) : Hill
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...
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...
Development of a UK Specification for PE Barrier Pipes
Author(s) : Shepherd, Water, Hill