2016 Berlin : Asset management of polyethylene gas networks
Author(s) : Ian Aldridge, Declan Robinson, Dave Smart, Chris Reed, Martyn, Greig, Trevor Stafford, David Christie-Lowe, Alec Erskine
For the UK polyethylene (PE) gas pipe network, the first installations now exceed 40 years in the ground, with an original design life of 50 years. It was thus timely to review the current condition and performance history of these first generation PE materials. A major 4 year project was started in 2010 to examine...
2016 Berlin : Assured quality of butt fusion and electrofusion welding of PE100 pipe
Author(s) : David Chrystie-Lowe
The many benefits of PE100 pipe materials include flexibility and toughness in addition to being relatively light products that are not subject to corrosion and expected to last well beyond the design lifetime . It is also a distinct advantage that end-load resistant joints can be made using butt fusion (BF) and...
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 : Optimisation of Butt Fusion Welding of Thick Walled PE100 Pipe
Author(s) : Lowe, Starkey, Powell
With the increasing success of PE100 and usage of pipes of increasingly large diameter,
concerns have been raised about the quality of weld performance with relatively thick
walled pipes (>50mm), which has led to the current investigation. In addition to the
consideration of welding conditions adopted in the UK,...
2006 Washington DC : Ukwir National Mains Failure Database
Author(s) : MacKellar
In 2002 UK Water Industry Research Ltd commissioned Bodycote PDL to collate and maintain a
database of all water main failures in the UK and develop a protocol for data collection of failure
information. Despite the huge disparity in the data formats from each company this has been
achieved and maintenance of the...
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...
1995 Edinburgh : The Crack Growth Resistance of PVC and PE
Author(s) : Marshall, Ingham, Brogden
When clients purchase plastics pressure pipes, they have frequently made that decision because they know that plastics do not corrode and they assume that if they do not exceed the pressure rating then a long lifetime should be assured. (Low cost has also been known to be a factor).
It is thus of concern for the...
1988 Bath : The Abrasion Resistance of Polymers Used in Slurry Transport Systems
Author(s) : Lowe, Marshall
A Rotating Pipe Drum Test has been developed to assess the abrasion performance of plastics pipes to an extpnt where most test variables are understood. The procedure involves the rotation of relatively short pipe lcngths containing slurry on a conventional bail mlll. In the rest, the pipe surface repeatedly passes...
1985 York : The Abrasion Resistance of Polymers in Slurry Environments
Author(s) : Lowe, Marshall
A new test has been developed to evaluate the abrasion performance of different
pipe materials. The Rotating Pipe Test simulates sliding bed flow of a slurry and
gives quite excellent data reproducibility. The influence of sample geometry and
slurry changing frequency and particle size have been assessed. The effects...
Lifetime of Electrofusion Joints
Author(s) : Lowe, Ingham, Starkey