Plastic Pipes Conference Association # 2010 Vancouver
S.Sandstrum
Historically, the procedure for butt fusion joining of polyethylene (PE) pipe in the United States has been qualified on the basis of two fundamental tests that are widely recognized within the North American industry. These are the tensile impact (TI) test method found in ASTM F2634 and the bend-back or reverse-bend (RB) practice as described in ASTM F2620. Both of these methods have been widely used within the industry and both have some specific limitations as it relates to qualification of butt fusion joining conducted in the field. ASTM F2634 is a highly sophisticated testing method involving precision instrumented laboratory equipment. This makes it impractical for an on-site qualification for butt fusion procedures in the field. The RB test, on the other hand, lends itself to field implementation but as the method is applied to larger diameter, heavy-walled pipe, safety considerations become a limiting factor. This paper examines a test method referred to as guided side bend (GSB) testing that has been developed on an international scale that appears very promising as an alternative to the bendback as described in ASTM F2620. The test method will be fully described and data will be presented comparing tensile impact results and traditional bend back results to those obtained using the GSB test method. Discussion of the test results and safety considerations of the proposed test method will be addressed and conclusions drawn regarding its future applicability within the United States.
Related papers
Author(s) : Steve Sandstrum, Chris Ziu
The market for high performance polypropylene (PP) piping systems in North America continues to evolve. Generally, PP piping systems have performed exceptionally well in a variety of challenging HVAC, industrial and plumbing applications. As a result, the engineering community in North America is embracing higher...
Author(s) : Steve Sandstrum, Stefan Dreckoetter, Zak Schultz
This paper provides a historical overview of the development of polypropylene (PP) for piping applications. The discussion includes a historical review of each step in the evolutionary trend for PP piping materials over the last 40 years and culminates with a focus on the most recent development in PP piping...
Author(s) : Steve Sandstrum, Stephen Boros
As the technical performance and reliability of polyethylene pipe systems have grown, so too has the range of application and the complexities for designing and sourcing the variety of components necessary for these projects. In today’s global market, major industrial and/or municipal investments such as raw water...
Author(s) : Sandstrum Steve
The term “hydroelectricity” conjures images of massive concrete dams and vast reservoirs that harness the power associated with moving water. More recently, however, technological advancements and environmental awareness have resulted in renewed interest in small-scale hydroelectric projects. These unique...
Author(s) : Jos Robeyns, Philippe Vanspeybroeck, Steve Sandstrum
ISO CD 29561 applies to glass fibre reinforced polyethylene pipes and fittings intended to be used for the conveyance of water under pressure for general purposes, as well as for the supply of drinking water. The pipeline may be buried, above ground, or outside buildings. The temperature of the medium to be...
Author(s) : S.Sandstrum
Historically, polyethylene (PE) gas pipe systems in the United States have operated at service conditions for which the likelihood of a failure due to a rapid crack propagation (RCP) event has been nearly non-existent. The exceptional safety record for PE piping systems in this critical application has resulted in a...
Author(s) : Sandstrum, McKinley
The market for high density polyethylene (HDPE) pipe continues to expand across a variety of end use applications. As this growth continues to accelerate, users within the market place have become more familiar with the traditional method of joining HDPE pipe, namely butt fusion, and have become more educated in the...
Author(s) : Steve D. Sandstrum, White G. Jee
Polyethylene pipe produced from resins meeting the criteria for the PE 100 designation were first introduced on an international scale in the late 1980’s. Since, that time these piping products have grown to become recognized as the international standard for longterm performance in the use of polyethylene pipe. The...
Author(s) : Sandstrum
The use of polyethylene pipe in potable water systems has grown considerably over the past thirty years on both a domestic (North America) and international (Global) basis. Factors driving this growth have included material improvements, standards development, expansion of innovative construction techniques and...
Author(s) : Gunther, Sandstrum
Washington Gas has been researching a number of innovative methods for the repair and replacement of older large diameter cast iron mains. We considered direct burial, rolldown, U Lining, PIM, and guided boring. The ideal replacement technique would allow for a fully rated (64 psi or 5 bar) system which would have a...
Author(s) : Sandstrum
Members of the Association
