Rehabilitation
Plastic Pipes Conference Association # 2001 Munich
Wroblewska, Kwietniewski, Roszkowski
The condition of underground infrastructure in Poland at the beginning of the 1990s was very poor. The length of the water supply, sewage and gas network was relatively small, compared with Western Europe, and the installation materials used at the times of socialism were of very low quality; the same can be said about workmanship. Following the political change in 1989, a rapid expansion of the municipal infrastructure started, facilitated by the development of local administration. In addition to the construction of new pipelines, much more attention was paid to the technical rehabilitation of the existing infrastructure. Initially, the rehabilitation techniques developed in Western Europe proved to be too expensive in many situations. However, with time, their technical and economic attractiveness has grown. Presently, most rehabilitation techniques known in Western Europe are used in Poland, including the Compact Pipe method developed by Wavin and introduced in Poland in 1997. Initially two, and presently three Compact Pipe licensees operate over the entire territory of Poland. Up till today, they have used Compact Pipe to renovate over 30 km of different pipelines. Some of them are presented in the second part of this paper.
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) : 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) : James F. Mason, Akshay Ponda, Hermann van Laak, Tobias Bauer
The long-term strength of unplasticized polyamide 12 (PA-U12) has been characterized using standard methods for plastic pressure pipe during the qualification process for use in buried piping systems for natural gas delivery operating at low ambient temperatures, usually less than 20 to 30°C at pressures...
Author(s) : Aisha Khaleel, Suleyman Deveci, Sulistiyanto Nugroho, Fatima AlHameli
The use of polyethylene pipes in transportation networks of pressurized water and gas have shown superb performance over the history. High density, high-molecular-weight, and bi-modal polyethylene materials, known as PE80, PE100 and PE100RC, have successfully served the market for many years in standard applications....
Author(s) : Zhanjie Wang, Jing Guo, Lin Wang
In the past two years, the Chinese plastic pipe industry has faced a complex and changeable development situation. The domestic economy has faced the pressure of demand shrinkage, supply impact, and expected weakness, and the market has changed greatly. The impact of the Covid-19 and the influence of many unfavorable...
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) : 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) : Chris Greggs
Much has been done to improve the quality and efficiency of HDPE pipe installations over the years. Now, a totally new concept for fusion where the machine meets the pipe where it lays to improve worksite safety, boost jobsite efficiency, and minimize the amount of time spent between fusions has been developed. This...
Author(s) : Suleyman Deveci, Aisha Khaleel, Birkan Eryigit
Short and long term hydrostatic pressure resistance of plastic pipes are measured according to ISO 1167, by applying an internal pressure that is calculated for the target hoop stress considering outer diameter and wall thickness of the pipe samples. Due to the nature of the extrusion process, wall thickness...
Author(s) : Dr. Ricky Selle
Structural behavior of flexible plastic manholes is very different from rigid concrete products. Although this is state-of-the-art knowledge, no international or EN standard exists on structural design of these products. Therefore, traditional soil models and soil pressure coefficients are usually applied if...
Author(s) : Ali M Alghamdi, Recep Yaldiz, Faisal Almana, Yousof Ghazzawi, Abdul Rahim Arafath, Ratnesh Khandelwal, Azzedine Kioul, Turki Al-Shahrani, Salem Al-Anazi, Sarfraz Abbasi, Mohammed Aljasser, Parthipan B, Kavya A, Harm Caelers
Reinforced thermoplastic pipes (RTPs) are multilayer structured pipes reinforced with high-strength materials such as fibers (glass, aramid, or carbon fibers). RTPs are used to transport highly corrosive mediums at elevated pressures and temperatures. An example of that is the use of RTP in the Oil & Gas industry to...
Author(s) : Guido Quesada, Mark Weih
The Plastic Retainer Ring (PRR) gasket is an old friend of pipe joints, and it is still used among other sealing solutions developed more recently. With origins traced back to the end of the 1960s, it is recognized among the first solutions developed for gasketed plastic pipe joints. It is very likely to have...
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) : Donald Swen, Leanne Pichay, Nicholas Vallin, Alice Wu, Jim Johnston
In the rural commune of Ait Bayoud, Morocco, two of the most remote villages in the area, Ilguiloda and Izgouaren, live with water scarcity. To meet their water needs, women and children walk several kilometers to the nearest spring each day, often multiple times a day. Consequently, children cannot attend school...
Author(s) : Andreas Moerman, Flip van der Valk, Mirjam Blokker KWR, Tjakko Haaijer, Jan Vreeburg,
Drinking water companies with ageing networks are facing vast amounts of drinking water network reconstructions during the coming decades. This development coincides with the energy transition, which puts pressure on the available space underground. These external drivers give drinking water companies an opportunity...
Author(s) : Paul J. Freudenthaler, Joerg Fischer, Mathias Eder, Reinhold W. Lang
For controlled water disinfection, typically chlorine is used and preliminary studies demonstrate its aging and crack growth acceleration effects on polyolefin pipe materials [1, 2]. Although the use of recycled plastics is not prohibited in some ISO standards for polyolefin piping systems [3–5], only small amounts...
Author(s) : James F. Mason, Akshay Ponda, Hermann van Laak, Buc Slay
The effects of liquid hydrocarbons on long term strength of pipe grade thermoplastic resins is an important consideration when designing pressure pipe for use in the oil and gas industry. There is an extensive body of work going back several decades descri bing these effects for pipe grade polyethylenes, and all...
Author(s) : Sultan Alkendi, Mohamed Jaber, Ahmed Atef Helal
The current push to reduce governmental energy subsidies has moved the need to adapt utility gas distribution networks toward the top of Middle Eastern governmental near-term agendas. Egypt is at the forefront of this push towards gasification. The United Arab Emirates has started on the path towards gasification...
Members of the Association
