2018 Las-Vegas : Modern PE pipe enables the transport of hydrogen
Author(s) : R.J.M. Hermkens, H. Colmer, H.A. Ophoff
To investigate the suitability of PE pipes for the transport of hydrogen on a specific industrial site, three topics were investigated. These topics are: the chemical resistance of PE to hydrogen, the permeation rate of hydrogen through PE and the electrofusion of PE pipes exposed to hydrogen. It can be concluded that...
2016 Berlin : Can PE and PVC gas distribution pipes withstand the impact of sustainable gases?
Author(s) : René Hermkens, Ernst van der Stok, Johannes de Bruin, Jeroen Weller
The replacement of fossil fuels like natural gas by sustainable gases such as biogas and hydrogen can mitigate global warming. There has been some debate about the impact of sustainable gases on the materials used in the gas grid. An extensive study of the behaviour of PE, PVC, POM and rubber materials was therefore...
2014 Chicago : Polyolefin Sewer Pipes – 100 Year Lifetime Expectancy
Author(s) : Tiem Meijering, Jeannette Mulder, Günter Dreiling, Heinz Vogt
In this study, it has been demonstrated that a 100 years service-lifetime for non-pressure sewage pipes, solid wall pipes and structured-wall pipes of PE and PP, can be expected provided some basic conditions are met. It has been demonstrated that the resistance to thermo-oxidative degradation of the applied materials...
2010 Vancouver : Pa pipes for 16 bars gas pipelines
Author(s) : Frans Scholten and Mannes Wolters
PA11, PA12 and plasticized PA6.12 pipes are interesting candidates for gas transport and
distribution pipelines at 16 bars pressure, which is beyond the maximum pressure for
PE100 pipeline systems (10 bars). However, PA pipelines are not meant as an alternative
to PE pipelines, but to steel pipelines. Therefore,...
2006 Washington DC : Plastics Pipes and Drinking Water Quality
Author(s) : Meijering
The possible effects of plastics pipes on drinking water quality are frequently
in discussion and require the highest attention of our industry. On one hand,
the European Commission (EC) is working already long time to set up a
European Acceptance Scheme (EAS), so far without the desired speed. The
2004 Milan : Combined Loading of Buried Thermoplastics Pressure Pipes
Author(s) : Janson, Alferink, Wolters
This paper presents the results of work that was performed at the request of TEPPFA , The
European Plastics Pipes and Fittings Association, on the issue of “Combined loading”
(external and internal loading) of buried thermoplastics pressure pipes.
The work is of great importance for users and designers of...
2004 Milan : EAS European Acceptance Scheme
Author(s) : Nury, Meijering
After long time of preparation and co-normative research, the new European Acceptance
Scheme for Drinking Water quality (EAS) is progressing now very strongly and will become
in force as officially expected in 2006. So, besides the legally required CE marking showing
the conformity to the Essential Requirements of the...
2001 Munich : The Performance of a Gas Distribution System of Ductile PVC
Author(s) : Meijering
In the Netherlands, a gas distribution system of Ductile PVC with elastomeric sealing
ring joints and several special features is already operating to full satisfaction during
more than 35 years. Today, Ductile PVC is the preferred material in this market. The
total length of the gas distribution net is about 110.000...
1998 Gothenburg : Environmental Life Cycle Assessment of Gas Distribution
Author(s) : Wikkerink, Wolters, van den Berg, Huppes
Environmental aspects tend to be increasingly important in designing gas distribution systems
and in selecting gas distribution materials. Therefore the environmental aspects of various
materials options for gas distribution networks were analyzed by means of a quantitative life
cycle assessment. This paper describes...
1998 Gothenburg : Environmental Stress Cracking of PVC Pipe Materials
Author(s) : Wolters
In the Netherlands, rigid PVC and impact-modified PVC pipes have been used in gas
distribution systems for dozens of years. In general, these pipes have performed excellently.
Some years ago, however. questions were raised about the resistance of these materials to
certain gas constituents. An extensive research...
1998 Gothenburg : Ultrasonic Inspection of Butt-Fused PE-Joints
Author(s) : Horst, Weyn, Hermkens
For a long time the energy distribution companies in the Netherlands have expressed their need for ways of effectively assessing the quality of field-installed PE-pipe systems to prove integrity and reduce maintenance and repair costs. This becomes especially important with the increased use of these PE-systems for...
1998 Gothenburg : Welding of Peroxide, Silane and Electron Beam Crosslinked PE Pipes
Author(s) : Scholten, Wolters
An investigation has been carried out into butt welding and electrofusion welding of PEX
pipes, which had been crosslinked using the peroxide, silane and electron beam processes
(PEXa, PEXb and PEXc respectively). A new hypothesis was set-up to explain the good weld
quality of PEXa pipes electrowelded with regular...
1992 Eindhoven : Effect of Installation Conditions on Buried Plastics Pipes
Author(s) : Alferink, Wolters
Results of deformation measurements carried out
on buried plastics pipes installed at six
different tests sites are discussed in this
paper. The results show that the deflection of
buried pipes is usually rather small and the
time dependence is limited to a few years after
installation. Traffic loading does not result...