2021 Amsterdam : A TRADE ASSOCIATION EXPLORED
Author(s) : Drew Mueller, Peter Dyke
HDPE Pipe holds a dominant position in several markets in North America: natural gas distribution, oil
patch, mining, landfill and geothermal. So why are polyethylene’s municipal water and wastewater
market shares so much lower than these other industries? How has the polyethylene industry been
successful in growing...
2021 Amsterdam : DESIGN OF A DISTRIBUTED STRAIN MONITORING SYSTEM FOR HDPE WATER PIPELINES CROSSING AN EARTHQUAKE FAULT
Author(s) : Peter Hubbard, Linqing Luo, Andrew Yeskoo, Kenichi Soga, Krista (Moita) Araica, Gus Cicala, Marshall McLeod
Seismically active faults pose a risk to buried water pipelines that can be complicated
to quantify. Fault type, slip rate, pipeline geometry, and soil conditions all factor into a
complex soil-pipeline interaction. For critical pipelines that cross faults, high-density
polyethylene (HDPE) has become an attractive...
2021 Amsterdam : DESIGN OF LARGE DIAMETER BURIED PIPES
Author(s) : Anders Andtbacka, Peter Sejersen
In the late nineties a study of the behavior of buried thermoplastics pipes was carried
out. The project had input and participants from both the plastic pipe industry as well as
from external organizations. Six external leading experts in the field of pipeline design,
not necessarily plastics pipes design, have been...
2021 Amsterdam : INSIGHTS ABOUT ENVIRONMENTAL PERFORMANCE OF CONCRETE PIPES
Author(s) : Peter Sejersen
Environmental Product Declarations of e.g. building products are to a large extent
mandatory and we see that the European Union as well as individual Member States are
implementing new regulation to secure sustainability in new buildings. The European
Commission’s Product Environmental Footprint is one example and...
2021 Amsterdam : INVESTIGATION OF THE QUALITY CHARACTERISTICS OF POLYAMIDE 12 PIPE WELDS
Author(s) : M. Eckes & Dr. B. Baudrit, Dr. M. Troughton & D. Wylie, H. van Laak & J. Fritz
Unplasticized polyamide 12 (PA-U12) is increasingly being used in pipe applications,
especially in the gas sector. However, the material behavior in the usual quality tests for
pipe welds has not yet been thoroughly investigated.
For this reason, two research institutes, worked in cooperation with a manufacturer
2021 Amsterdam : LONG-TERM DURABILITY OF NEW POLYMER COMPOSITE VALVES FOR DRINKING WATER NETWORKS
Author(s) : Jennifer Ravereau, Jose Teixeira Pinto, Malena Bernabeu, Jose Alacid, Jean-Philippe Le Goff, Frederic Mohier, Benjamin Rabaud
Drinking water network fittings such as valves are made of brass materials known to be robust over
long periods. Due to the gradual inflation metallic raw material costs, composite plastic valves have
grown in market share. Uncertainties remain, however, on their long-term reliability.
The aim of this work is to...
2021 Amsterdam : MUTUAL RECOGNITION OF THE CERTIFICAT ION SCHEMES IN EUROPE
Author(s) : Horst Stimmelmayr, Peter Sejersen
The voluntary certification scheme for plastic multilayer piping systems for hot and cold
drinking water inside buildings is a joint effort of two key European organizations. It was
initiated in close cooperation with the Brussels based European trade association of
plastic pipe and fittings manufacturers, TEPPFA....
2021 Amsterdam : RECYCLING COMMITMENT OF THE EUROPEAN PLASTIC PIPE INDUSTRY
Author(s) : Ludo Debever, Peter Sejersen
The European Plastics Strategy is a priority for the European Union. Recycling more post-
consumer plastics (PCRs) is paramount. That is why the Circular Plastics Alliance has been
established. The alliance gathers public and private stakeholders in the plastics value chains to
promote voluntary actions and...
2021 Amsterdam : SLOW CRACK GROWTH RESISTANCE OF REPROCESSED PVC
Author(s) : Andreas Frank, Mario Messiha, Günter Dreiling, Norbert Schuler, Jens-Martin Storheil, Erwin Mayrbäurl, Stuart Ramella, Frank Krause, Rudi Berning, Philippe Gabriëls, Alpay Aydemir, Thomas Koch, Florian Arbeiter, Gerald Pinter
The Cyclic Cracked Round Bar (CRB) Test has been applied to study the slow crack growth
(SCG) resistance of virgin, recycled, and reprocessed PVC-U. This fracture mechanical test allows a
quick ranking of the SCG resistance of PVC-U. A clear correlation between the K-value and the SCG
resistance has been elaborated....
2018 Las-Vegas : Design of large diameter buried pipes
Author(s) : Anders Andtbacka, Frans Alferink, Peter Sejersen
The behavior of buried plastic pipes is already well described in standards and technical specifications and as well as proven in real life conditions. Plastics pipes in diameters up to around 400 mm are already in use for more than 60 years and pipes with larger diameters for more than 20 years now. All with good...
2018 Las-Vegas : Harmonizing the european hygienic requirements
Author(s) : Ilari Aho, Volker Meyer, Peter Sejersen
The lack of a cross-border acceptance of the approval of the hygienic requirements for plastic pipes systems is inefficient and expensive for the industry. The costs for testing of a pipe system range from a few thousand Euro to more than €30k /reference 3, 4/. The European Plastic Pipe and Fitting Association...
2018 Las-Vegas : HDPE Pipe as a Solution to Utilities Operating on a Manage to Fail Basis
Author(s) : Sarah Eisenstat, Peter Dyke
Many cities in the US are operating their water utility on a “manage to fail” basis, meaning they are replacing >100-year-old pipes at a cycle time of over 150 years. At this rate, most of the pipes will have failed before they can be replaced. Ft. Wayne, IN made the realization that PE pipe is the solution due to its...
2018 Las-Vegas : Large pressure pipe system – Fully PE100
Author(s) : Sverre Tragethon, Martin Andersson
Global mega trends push for investments in sewage treatment capacity & efficiency. A trend is to go for central regional treatment sites, typically remotely located from dense populated cities. This calls for high capacity pressure sewage transmission pipelines. Reliable operation is of course of paramount importance...
2018 Las-Vegas : New en standard for infiltration units
Author(s) : Peter Verlaan
Ten years ago, The European Plastic Pipes and Fittings Association (TEPPFA) has taken the initiative to prepare a draft 'Standard for Infiltration units' based on existing national specifications, at that time (in particular) available in France, Germany, United Kingdom and the Netherlands.
This draft 'Standard for...
2018 Las-Vegas : Quality assurance on welded joints with the mechanised linear shear test (lst)
Author(s) : Juergen Wuest, Benjamin Baudrit, Frank Dorbath, Christopher Pommer
A testing apparatus for determining the mechanical properties of electrofusion and heated tool sleeve welded joints with the mechanized linear shear test (LST) was developed. The LST-apparatus allows the recording of the force as a function of the extension / shear length. It has been proved that the linear shear test...
2018 Las-Vegas : Slow crack growth resistance of non-virgin polymers
Author(s) : Andreas Frank, Isabelle J. Berger, Mario Messiha, Carl-Gustaf Ek, Norbert Schuler, Jens-Martin Storheil, Erwin Mayrbäurl, Steve Heeley, Frank Krause, Lodewijk Niemöller, Philippe Gabriëls, Yogesh S. Deshmukh, Florian Arbeiter, Thomas Koch, Gerald Pinter
In order to improve the circular economy of polymers in terms of sustainability and reduced carbon footprint, the increased use of recyclates has become a topic of major importance. Due to their long design lifetimes, pipe applications represent an excellent opportunity to create added value to non-virgin polymers. In...
2018 Las-Vegas : Squeeze-off and rerounding of plastic pressure pipes
Author(s) : Juergen Wuest, Mirko Wenzel, Andreas Bilsing, Peter Postma, Werner Wessing
Within the scope of a DVGW (German Technical and Scientific Association for Gas and Water) research project the technology of squeezing-off for PE pipes at operating pressures higher than 1 bar and the extension to new materials with higher operating pressures were investigated. For this purpose the tightness of the...