2014 Chicago : PE100 and PE4710 Sourcing Components in a Global Market
Author(s) : Steve Sandstrum, Stephen Boros
As the technical performance and reliability of polyethylene pipe systems have grown, so too has the range of application and the complexities for designing and sourcing the variety of components necessary for these projects. In today’s global market, major industrial and/or municipal investments such as raw water...
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Traditional piping materials e.g. metals are becoming outdated due to their high weight, difficult handling and questionable performance over time.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...
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...
2010 Vancouver : Influence of shock pressure testing on the service life of HDPE piping systems
Author(s) : Ulrich Schulte, Heinz Vogt, Hans-Friedrich Enderle, Dieter Lilge
The completion of a pressure test is mandatory for all new pipe systems. Its purpose is to demonstrate the overall leak-proof condition of the system. In the course of this test, HDPE pipes of SDR 17 class are exposed to high stress loads. In an extensive test programme, all failure mechanisms observed in long-term...
2010 Vancouver : Polyolefins pipe solutions for geothermal applications
Author(s) : C.Salles
Geothermal energy is broadly recognised as an environmentally friendly, cost-effective and
virtually inexhaustive heat source, as well as an increasingly credible alternative to traditional
heating solutions. Only a small portion of the potential energy is actually used. The fastest
growing segment, with very...
2006 Washington DC : 50 Years of Pipes made from High Density PE
Author(s) : Schulte
After the discovery of the low-pressure process for the production of polyethylene with the aid of Ziegler catalysts, only another year went by before pipes were being extruded in highdensity polyethylene. In the same year, at the end of 1954, Hoechst had already begun to carry out long-term failure tests on HDPE...
2004 Milan : HDPE PIPES ARE MORE RESISTANT TO OXIDATION THAN THE OIT INDICATES
Author(s) : U. Schulte
There are three factors that can influence the service life of plastics pipes: mechanical overloading, environmental stress cracking and degradation caused by oxidation at high temperatures. This article deals primarily with the degradation that occurs during processing at high temperatures and also – as an...
2001 Munich : Mechanisms of Slow Crack Growth in PE Pipe Grades
Author(s) : Beech, Ferguson, Clutton
Design of pipe systems for 50 year lifetimes depends on accelerated testing of pipe at
different temperatures and standard extrapolation methods for assessment of whether the
minimum required strength is achieved. Further acceleration is used in the notched pipe
test (NPT), which is a medium term (up to 1000 hour)...
2001 Munich : Multimodal Design of Thermoplastic Pipe Material
Author(s) : Berthold, Boehm, Enderle, Lackner, Lilge, Schulte
The new generation pipe materials PE 100 are now well positioned in the market because
of their unusual combination of mechanical properties. Major advantages are high resistance
versus slow crack growth combined with superior stiffness. These new PE 100 resins show
very high long term hydrostatic strength for...
2001 Munich : PE Pipeline Systems - The Big Success Story
Author(s) : Beech, Ducan, Millar
Polyethylene has been used for pipeline applications for nearly 50 years now. It has become
the prime material choice for gas and water distribution systems and many other applications
worldwide. This paper reviews the growth in the market for polyethylene pipe products for
both pressure and non pressure applications...
2001 Munich : Pipeline Systems Made of Plastics Pipes Extruded from PE
Author(s) : Schulte
Lifetime expectations play a major role when selecting materials for pressure pipes.
Information on the service life of a piping system made of polyethylene can be gained from
the creep rupture tests at various temperatures being evaluated by standardized extrapolation
methods (ISO/TR 9080). With the help of test...