Plastic Pipes Conference Association # 2021 Amsterdam
C. Losher and P.V. Mercea
In the framework of the German Environmental Agency (UBA) requirements of plastic articles in contact with drinking water (KTW-BWGL-guideline), the compliance is verified by comparing so-called “expected concentrations at tap”, C tap , of substances contained in the plastics with specific limits in drinking water (so- called MTC tap ’s). In practice, C tap ’s are obtained by analytical determination of the substance concentrations, C W ’s, in water at the end of a number of migration periods. However, this procedure is often a challenging, time and costs intensive task. This is especially true for materials like PVC-u, where the migration levels are, in most case, far below the detection limits of the most modern analytical methods. For such situations, an UBA Guideline recommends the use of migration modelling for the estimations of C W ’s. To perform such calculations a series of input parameters are needed, among them the diffusion and partition coefficients, D P ’s and K PW ’s, of the migrating substances are the most challenging ones. In recent years FABES Forschungs-GmbH, by investigating migration of substances from a series of polyolefins into water, has developed methods which allow the estimation + ’s, for compliance migration calculations for any of “conservative” D P+ ’s and K PW organic additive found in these polymers. In this presentation these results are presented in a very concise manner. Moreover, the extension of these results for a series of substances migrating from PVC-u samples in drinking water will be also presented. Eventually it will be shown how this information was implemented in a special software MIGRAPipe-KTW with which migration estimations as stipulated in the KTW-BWGL-guideline can be performed.
Related papers
Author(s) : Ajay Taraiya, Peter Degenhart, Mark Boerakker
In PPXX, a technology was presented for the first time that could bi-axially orient polyolefin pipes. With this technology, it is possible to prepare pipes that have a performance far beyond the standard ones. One approach to achieving this performance is via a continuous in-line process. To optimize the in-line...
Author(s) : Dolores Herran
MOLECOR continuing with its line of leading water infrastructure sector with its technological products, has recently developed a software that can be used through a mobile application or web browser with which users can digitalize and geolocate the different pieces that form a water infrastructure network. This is a...
Author(s) : Ricardo Pascual
Social awareness with aspects related to the conservation of the environment and sustainability, the acceptance by citizens of the need to reduce consumption, reuse products, repair as far as possible and, fundamentally, the action of recycling at the end of its life, facilitates the availability of recycled plastics...
Author(s) : Shane Harton, Andrew Sell, Carl Dolgow
The torque rheometer has been the standard instrument used in poly(vinyl chloride) (PVC) quality control (QC) testing for decades. ASTM D2538 has provided standard, comprehensive testing and analysis procedures since 1969 that have allowed the vinyl industry to coalesce around this simple, yet robust, set of...
Author(s) : Michael O’Rourke
The required wall thickness for a fully fused HDPE water main subject to an earthquake induced lateral spread is addressed in this paper. The water main is assumed to be buried via cut and cover (i.e., open cut with typical burial depths in the 2 to 15 feet range) procedures and any laterals have small diameters. For...
Author(s) : Antonio Rodolfo Jr., Vanderley M. John
Unplasticized (U-PVC) ABNT NBR 5647-2 regular industrial pipe samples, with nominal diameter DN 100, outside diameter 110 mm, nominal wall thickness 7.8 mm, Ca/Zn stabilized, were studied using an essential work of fracture (EWF) approach. These pipe samples were also tested for the degree of gelation via...
Author(s) : Cindy Bray
For over two decades, the plastics pipe industry in Australia has aimed to recycle the maximum amount of usable plastic pipe and other suitable materials into new plastic pipes through programs such as take-back schemes and providing collection facilities on manufacturing sites. In Australia long-term sustainability...
Author(s) : Tobias Johnsen, Ole Grøndahl Hansen
With a growing global population that will primarily settle in urban areas, more and more agricultural land will be converted into dwellings, roads etc. As the demand for food in 2050 will be 60% greater than today, a conflict between Sustainable Development Goals 2 (Zero Hunger) and 11 (Sustainable Cities and...
Author(s) : Dr. Tania Weyland, Dr. Tobias Eltze, Dr. Rolf Wittlinger, Marie-Laure Bertet, Gregor Huber
A significant amount of water is lost in transit from the water treatment plant to the consumer. A major cause of water leakages is the deterioration of assets including the use of disinfectants. Using chlorine-based disinfectants is known to be extremely effective in eliminating waterborne pathogens, but they also...
Author(s) : Roland Valk, René Hermkens, Sjoerd Jansma
The use of hydrogen gas as an energy carrier is seen as a key component of the energy transition. This creates new challenges, including in relation to the transport and distribution of this gas. The low-pressure (natural) gas distribution grid in the Netherlands currently consists of 64% PVC and is presumed to be...
Author(s) : A. Marangoni
The competitiveness of plastic pipes vs. non plastic pipes for water and sewer networks relies on both a superior performance to cost ratio and environmental benefits that can be offered to the utility industry, across the whole lifecycle of these networks. In order to help the European pipe network owners in...
Author(s) : Tobias Johnsen
To ensure the highest possible quality of plastic pipes for the Nordic market, the Nordic Poly Mark currently only allows virgin material or own reprocessed material. In order to accelerate the circular plastic pipe economy in the Nordics, a partnership between a PVC pipe waste collection system, a PVC pipe producer...
Author(s) : Peter Sejersen, Ludo Debever
Microplastics in drinking water and in food in general has been a topic with ever increasing interest since a publication of a study in the British newspaper The Guardian. The microplastics topic has also high focus on governmental level, e.g. in Germany where a report of Fraunhofer Umsicht /1/ estimates the amount...
Author(s) : Jay Parvez, Richard Nichols
All thermoplastic and thermoset pipes must consider the impacts of cyclic loading on overall performance. Since its first use, PVC pipes have been tested for its resilience to such loading. As testing evolved over time, the method to determine cyclic capacity for gasketed PVC pipes has improved. Previously, the...
Author(s) : Karin Jacobson, Daniel Ejdeholm
Plastic pipes often have much better corrosion resistance than metallic pipes and have, in addition, the benefits of low weight and flexibility. Thanks to this, they are often used to convey chemicals. There is, however, still a large potential for a much more extensive use of plastic pipes for this application. The...
Author(s) : Ignacio Muñoz
Society has recently lived few strange and peculiar years, to say the least. COVID impacted personal lives, businesses, industries. And it is undeniable, the big elephant in the room arrived years before COVID and will remain much more: CLIMATE CHANGE. As broad as this topic is, this paper focuses on the impact that...
Author(s) : J. Lahoz
An investigation project was launched in 2020 to clarify the relationships between the processing conditions and the design lifetime of PVC-U 250 pipes. Ca/Zn stabilized pressure pipes were extruded with different processing temperatures and characterized by their DSC B-onset temperature and degree of gelation. Their...
Author(s) : Luciana Oriqui, Mauro Adamo Seabra, Antonio Rodolfo Jr.
The Brazilian PVC pipe industry maintains specific mechanisms of intense and continuous evaluation of the products regularly offered to the market. These programs are carried out by an independent third-party technical entity, within known public rules and based on the best practices of conformity assessment. Their...
Author(s) : Peter Sejersen, Ilari Aho
European standardization of plastic pipe systems has been on the agenda since the eighties and almost all applications are now described in common European standards. An important expectance however is the hygienic requirements of pipes for drinking water: Most of the EU Member States currently do not coordinate...
Author(s) : Dipl. Ing. Rainer Vießmann
The production of PVC pipes is mainly produced on counter rotating twin screw extruders as the PVC Dryblend material is readily available in powder form. Whereas PVC granules, mainly processed on single screw extruders, play a minor role in pipe production for economic reasons. The design of the extruder screws has a...
Members of the Association
