2014 Chicago : An Assessment of the Approach to Validate Polyethylene Pipe in Potable Water Systems
Author(s) : Dr. Ken Oliphant, Patrick Vibien, Dr. Michael Conrad, Sarah Chung
A new methodology has been developed to validate the performance of polyethylene piping materials in potable water applications. The methodology is based on several research programs which examined a standardized accelerated test methodology (ASTM F2263 Standard Test Method for Evaluating the Oxidative Resistance of...
2014 Chicago : Polyethylene Pipe Repair
Author(s) : Dennis Jarnecke, Tony Kosari
The purpose of this research was to conduct a thorough evaluation of a structural reinforcing system (patch) for the repair and/or reinforcement of mechanically damaged polyethylene pipes in an effort to establish permanency of the repairs and determine the life expectancy. MDPE and HDPE pipe specimens with machined...
2010 Vancouver : Comparison Between PE4710 (PE4710 PLUS) and PE100 (PE100+, PE 100 RC)
Author(s) : Dr. Gene Palermo
The scope of this paper is to clarify the various pipe material designation codes and other terms (PE 4710, PE 4710 PLUS, PE 100, PE 100 RC and PE 100+) that are used in the piping industry for high density polyethylene (HDPE) materials. These are the benchmark “high performance” HDPE materials used worldwide for a...
2006 Washington DC : Introducing PE100 for Medium Pressure Gas Networks in South America
Author(s) : Belforte, Gerard, Palermo, Guerra
South America is a region with a fast increase in economic growth and energy needs,
and natural gas represents a strategic energy source not only for producers like
Argentina but also for net importers like Uruguay and source-differentiated countries
The fast development of the economy leads to request of...
2006 Washington DC : S4 Critical Pressure and Critical Temperature
Author(s) : Maeger, Vanspeybroeck, Lamborn, Mamoun, Leevers, Oliphant
As polyethylene pressure pipes enter the global marketplace under an ever-wider range of
operating conditions, there is increasing emphasis on their rapid crack propagation
performance. It is important that both producers and end-users are able to rely on the
robustness of the rapid crack propagation test results and...
2006 Washington DC : Using the CRS Concept for Plastic Pipe Design Applications
Author(s) : Palermo
The CRS (Categorized Required Strength) concept was developed within the ISO pressure
rating system to provide more flexibility to the design engineer. One of the major uses of
CRS is to provide a design basis of 100 years for plastic piping applications. With the CRS
concept plastic pipe can now have a design basis...
2004 Milan : Can ISO MRS and ASTM HDB Rated Materials be Harmonized
Author(s) : Zhou, Palermo
ISO MRS and ASTM HDB rating systems have been successfully used for more than four
decades in Europe and North America. MRS differentiates well the three generations of
HDPE materials by classifying them as PE63, PE80 and PE100. However, HDB classifies all
three generations of HDPE as only one PE 3408. When...
2004 Milan : Environment Factors in Performance Forecasting of Plastic Piping Materials
Author(s) : Chung, Couch, Kim, Vibien, Oliphant
Environmental factors are known to significantly impact the oxidative failure mechanism of
materials. For example, the chlorine present in potable water as a disinfectant is an oxidant
that has been reported to impact the failure mechanism of materials in potable water
applications. In this paper, the relationship...