2018 Las-Vegas : Extrusion of thick wall pipes using a new bimodal PE 4710/PE 100 resin
Author(s) : Vivek Rohatg, Gregor Hiesgen, Mark J. Lamborn, Ashish M. Sukhadia, Douglas E. Simpson, David W. Borrego, Pamela L. Maeger
Maintaining dimensions within specifications is problematic for the extrusion of large diameter thick-wall polyethylene (PE) pipe (> 75 mm wall) due to sag caused by insufficient resin melt strength. However, sag can be controlled through careful resin selection and optimization of the pipe cooling process. This paper...
2018 Las-Vegas : Investigation of the failure behavior of polyethylene electrofusion sockets
Author(s) : Isabelle J. Berger, Andreas Frank, Gerald Pinter, David Nitsche, Dirk Petry
Electrofusion (EF) sockets constitute a well-established and practically proven technology for the joining of polyethylene (PE) pressure pipes. As for the pipes, the potential lifetime of such welding connections is beside other properties also depending on the resistance against slow crack growth (SCG). The current...
2018 Las-Vegas : The world's first class 3 safety related nuclear PE4710 piping project - 10 year review
Author(s) : Lonnie Corley, Dane Chang, Harvey Svetlik, Matt Brandes, Thomas Musto, Frank Schaaf, David Fink
This paper presents a brief overview of a challenging project at the Callaway Nuclear Power Plant where HDPE was utilized to replace degraded steel buried piping in a Safety Related water system. Callaway was the first Nuclear Power plant to obtain NRC approval and successfully place the HDPE piping system into...
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...
2016 Berlin : Big data, big difference
Author(s) : Nick Mark, Eric Bridgstock, David Carey
An insight into a unique approach to the management of electrofusion and butt fusion joint quality on polyethylene pipelines. The presentation will reference experience and learnings from a system that has already been used in the field to great effect (see Abstract) and a new approach to butt fusion (see enclosed...
2016 Berlin : Quality control testing of joints in gravity flow plastic pipes
Author(s) : David Becerril García, Jacinto Cortés-Pérez, Ian D. Moore
Joint performance of joints in gravity flow buried pipelines is very important since joint failure could produce structural or service limits to the system. Standards have been developed to evaluate that joints have the necessary structural and leakage capacities which specify test methods that are not clear and do...
2014 Chicago : Prediction of residual lifetimes of small diameter polyethylene pipes
Author(s) : Márton Bredács, Andreas Frank, David Nitsche, Andreas Riha, Gerald Pinter
Within this paper the property and lifetime profile of four small diameter PE water pipes for house supply, which were installed between 1968 and 1992 in Vienna and Graz, Austria, were studied. Based on thermo analytical and structure analytical test methods the materials show still expected values for PE even after...
2014 Chicago : Stormwater Boxes – A Solution for Climate Change Impact on Water Management
Author(s) : Martina Sandholzer, Michael Jerabek, Christophe Salles, Günter Dreiling
Due to the combination of climate change impact, resulting in many regions of the world having a heavier and unpredictable rainfall, together with increased urbanization, the possibility for lower natural infiltration of the water into the soil has created a real challenge for storm water management systems. Forecast...
2014 Chicago : Unlocking New Applications: PP-RCT for Demanding Skyrise Buildings
Author(s) : Christophe Salles, Christoph Stamm, Hugo Hammar
Traditional piping materials e.g. metals are becoming outdated due to their high weight, difficult handling and questionable performance over time. These are only a few of the reasons why plastics have rapidly become the preferred pipe material over the last few decades. PP-RCT (PolyPropylene Random Crystalline...
2012 Barcelona : Polyethylene pipes: PE water pipes and chlorinated disinfectants: a pragmatic approach to even safer solutions
Author(s) : Francis R. Costa, Christophe Salles, Anh Tuan Tran, Jeroen Oderkerk and Thomas Hjertberg
Over the years polyethylene has gained preference as the material of choice for
water distribution pipes due to its long successful track record offering comparatively
lower frequency of leakage, corrosion resistance, flexibility, light weight, easy
installation, etc. However, in recent years, there have been growing...
2010 Vancouver : Assessing the polyolefin water footprint
Author(s) : J.Toogood
Equitable and sustainable management of water resources is a major global challenge.About one third of the world’s population lives in countries with moderate to high water stress, resulting in a disproportionately high impact on the poor. Based on the currently projected human population growth, industrial...