Related papers
2018 Las-Vegas : A recent survey of water main failures in the US and CanadaAuthor(s) : Steven Folkman
A recent survey again confirms that PVC pipe has the lowest break rate when compared with break rates of ductile and cast iron, asbestos cement, steel, and concrete pipe. Other results of interest to water utilities and engineers are discussed.
During 2017, Utah State University conducted a survey of utilities across...
2018 Las-Vegas : C-PVC-O, pushing limits beyond in molecular orientationAuthor(s) : Ignacio Muñoz
During the last years PVC-O has become a popular product in pipe business due to the huge improvements of mechanical properties of PVC after orientation. At the same time, CPVC has become an important choice for hot water conduits in in-house applications. Molecor has started a research program to evaluate the...
2018 Las-Vegas : Considerations when restraining molecularly oriented PVC pipeAuthor(s) : G.M. Quesada, K.H. Steinbruck
The benefits of molecularly oriented PVC pipe (PVC-O) are well known and documented. Numerous studies covering improved pipe impact, toughness, hydraulics, and life cycle have been published. There is less information about PVC-O pipe under pipeline hydraulic forces. The objective of this paper is to identify design...
2018 Las-Vegas : Molecularly oriented awwa C909 pipe for seismic applicationsAuthor(s) : Richard St-Aubin, Dr. Thomas O’Rourke, Dr. Brad Wham, Blake Berger
Molecularly oriented polyvinyl chloride (PVC-O) pipe has been found to withstand large ground deformation during seismic events without damage. The properties of PVC-O pipe that support this performance have been investigated in a multi-year testing program undertaken at the Geotechnical Lifelines Large Scale Testing...
2018 Las-Vegas : Novel stabilizers for PVC/CPVC pipe and fittingsAuthor(s) : Mario Berna, Alessandro Tinarelli
PVC pipes and fittings are currently manufactured using a wide range of stabilizer systems whilst CPVC is currently manufactured using Tin stabilizers. The aim of this paper is to present a new type of heat stabilizer (booster) to be used in combination with Tin stabilizer; surprisingly this product offers synergistic...
2018 Las-Vegas : The use of temperature, lubrication, and supplied hydraulic pressure in the production of oriented PVC pipeAuthor(s) : Jie Feng, Michael Petr, Jeff Wenzel, Mark Mirgon, Sam Crabtree, Alan Nakatani
Through tensile tests, simulated orientation, tribology, and finite element analysis, this study explored the effect of temperature, lubrication and applied hydraulic pressure in the PVC orientation process. It was demonstrated that tight control of these parameters is critical in a continuous PVC orientation process...
2018 Las-Vegas : Trenchless advancements in hdd with fused PVCAuthor(s) : T. R. Marti
Horizontal Directional Drilling, or HDD, is now a common technique for installation of PVC pipe. This was not always the case. The fused PVC use in HDD has grown from an initial installation of 500’ (150M) in 2004 to installation lengths over 7000’ (2.14 KM) today. Advancements in connection properties taking into...
2016 Berlin : 21 years of pipeline training - The lessons learntAuthor(s) : Robert LeHunt
Nationally moderated and approved competency training Units and Qualifications have been established in Australia for plastics pipes within an overall Plastics Industry Training Package. Delivery of such Units over a 21 year period has contributed to a greater understanding of various plastics pipes materials,...
2016 Berlin : Bi-oriented PVC extrusion: stretching pipe performanceAuthor(s) : André Nijland
Bi-oriented PVC (PVC-O) pipes are increasingly installed on a worldwide basis for drinking water applications. This is due to the outstanding mechanical properties of PVC-O pipes, such as high strength and high ductility. Furthermore bi-oriented PVC pipes are light weight, flexible and have a low carbon footprint and...
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...
2016 Berlin : Design of plastic sewage products in PVCAuthor(s) : Maarten Kruijer
To ensure the structural integrity of long term load bearing thermoplastic (like PVC or HDPE/PP) components, the time-dependent behavior of the raw (thermoplastic) material needs to been assessed and integrated in the design procedure. This paper describes how the time-dependent material behavior can be integrated in...
2016 Berlin : ISO 13477 S4 testing of awwa C900 PVC pipeAuthor(s) : Sunwoong Choi, Tom Marti
Small scale, steady state (S4) testing per ISO 13477 is a lab-based procedure to determine the critical pressure at which a fracture will propagate following initiation in a given pipe material filled with a given test medium. The S4 test was originally developed for the natural gas industry using air as the test...
2016 Berlin : Longitudinal crack in large PVC-U pressure pipes. pipe gelation influenceAuthor(s) : Joaquín Lahoz Castillo
Three typical case study of longitudinal cracks found in large dimension PVC-u pipes installed in Spanish irrigation networks are presented for discussion. Gelation level of those pipes using EN-ISO 1452-2 alternative test methods DCM, DSC and Tensile test has been evaluated.
Irrigation networks in Spain extensively...
2016 Berlin : Mechanical stabilization of rigid PVC compositionsAuthor(s) : Thomas C. Pedersen, Robert R. Kwapisz
This paper presents rheological data on simple rigid PVC compositions lubricated paraffin wax, calcium stearate, and oxidized polyethylene wax. These three materials comprise the most widely used lubricant system for rigid PVC in North America. The influence of certain paraffin wax characteristics will be discussed....
2016 Berlin : New en standard PVC-Oriented plastic piping systemsAuthor(s) : HENK MEERMAN
PVC-Oriented is the second generation of PVC-Unplasticized. Molecular orientation of PVC-U pipes results in a strong improvement of the physical and mechanical properties. The new draft European standard for PVCoriented plastic piping systems is based on the ISO 16422 “Pipes and joints made out of oriented...
2016 Berlin : New trends in stabilizers for PVC pipeAuthor(s) : Mario Berna, Alessandro Tinarelli
The PVC pipes are currently manufactured using a wide range of stabilizer systems. European market was historically based on Lead stabilizers that have been entirely replaced by COS (Organic-based and/or Calcium-Zinc) systems thanks to the Voluntary Commitment of the European Stabilizer Producers Association within...
