Generic electro fusion procedures developed by the plastic pipe institute - Municipal advisory board

Author(s) : Dominique GUEUGNAUT, Manuel TESSIER, Romuald BOUAFFRE

Given the virtual absence of available up-to-date results regarding the acceptance criteria for defects at electro-welding interfaces, a study has been launched by GRTgaz RICE with the two-fold aim of confirming the accuracy of the PAUT technique for the detection and sizing of calibrated pit-shaped defects implanted...

Author(s) : Ali Al Hammadi, Shane R. Schuessler, Mohamed Ali Awadh Jaber

This paper presents the advancements of HDPE piping materials, design and installation for use in ASME Class 3 piping systems at nuclear power plants. The paper will specifically introduce details of the first ever ASME Class III nuclear new build use of Class 3 HDPE pipe and fittings at the Emirates Nuclear Energy...

Author(s) : Katsutaka Nakagami, Takahiro Kasatani

Osaka Gas improves various approaches to the improvement of polyethylene piping construction quality and executes the approaches. As a result of that, polyethylene pipes in Osaka Gas maintain high-quality and withstand the earthquakes. This paper shows these methods and performance against earthquakes in Japan. In...

Author(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,...

Author(s) : Fu Zhimin, He Guoshan, Wang Wanjuan

Our research shows that in a torque rheometer test the greater the fusion degree of PVC-U is, the higher the minimum torque of the torque curve is, and the smaller the difference between the maximum torque and the minimum torque of the torque curve. According to the relationship, the method of evaluating the fusion...

Author(s) : Nick Mark, Eric Bridgstock, David Carey

An insight into a unique approach to the management of electrofusion and butt fusion joint quality on polyethylene pipelines. The presentation will reference experience and learnings from a system that has already been used in the field to great effect (see Abstract) and a new approach to butt fusion (see enclosed...

Author(s) : R.J. Stakenborghs

Inspection of non-metallic materials is becoming more important as more and more non-metallic materials are used in various applications. One method for inspecting this non-metallic material is by electromagnetic radiation in the 1GHz to 100 GHz range, or microwave energy. Microwaves interact with material in a...

Author(s) : Takehiro Fujii, Hideo Hirabayashi, Kazushi Yamada, Hiroyuki Nishimura

It is important to stabilize the scraped surface of the polyethylene pipe, even if some operator scrape the surface of the polyethylene pipe. In Japan this automatic saddle scraper is widely used for improving workability and plumbing quality The newly developed “Automatic saddle scraper” consists of the casing unit...

Author(s) : Jörg Wermelinger, Oliver Hein

More and more a strong desire is noticeable for Non Destructive Testing (NDT) of welded PEjoints. The objective is to determine the long term performance of plastic piping systems made from PE100. To assess the impact of “mostly known defects“ on the long term performance of a welding, well-defined flaws have to be...

Author(s) : Jean-Francois Greiner, Steve Tan, Alastair Walmsley

PVC4Pipes, a non-profit association founded in Brussels in 2003, whose main purpose is to support and stimulate the use of PVC pipe systems, has recognized the need to improve the knowledge and the perception in the market of the quality and environmental sustainability of PVC pipe systems. So a series of...

Author(s) : Edward Ingham, Mike Shepherd

Exova has previously demonstrated that under normal operating conditions PE 100 pipes would be expected to have a lifetime of over 200 years, but in the UK concerns have been reported about relatively high failure rates within the water utilities of fusion joints, particularly for large diameter pipes. For some time,...

Author(s) : Alex Geringer

PolyethyIene pipes with their widely prized benefits, such as low weight, high flexibility and high pressure resistance to 16 bar, have become state of the art in dimensions up to d 630 mm (24”). Today, pipelines up to outer diameters of d 2000 mm (80”) or more are getting used frequently within different...

Author(s) : Vince King

In order to greatly reduce the risk of a compromised butt fusion joint in a plastic piping system, the ability to collect, analyze, and trace butt fusion data is becoming increasingly more important, and in many plastic pipeline specifications a mandated procedure. When the parameters and critical steps of the butt...

Author(s) : Jason A. Lawrence

Traditional butt fusion technology relies upon high power electrical sources such as power grids or site generators to provide the power for facing operations, heating operations, and the required machine movements. Some jobsites, however, pose special challenges, such as remote location and the lack or unreliability...

Author(s) : Frank W. O’Callaghan, Todd Randell

Building new pipeline infrastructure in highly congested urban environments is causing some interesting challenges for New Zealand engineers and construction companies, demanding innovative new pipeline solutions. The Birkdale area in the former North Shore City, now part of Greater Auckland City, New Zealand...

Author(s) : Monica de la Cruz

Always important, but especially relevant in these times of cost cuttings, is to be aware of and to take into account all costs related to our activity. This paper discloses the contribution of the plastic pipes installation quality in the cost savings for our industry and customers. Generally, our clients only...

Author(s) : P. Krishnaswamy, S. Kalyanam, Y. Hioe, D.J. Shim, E. Focht

There is a significant interest in the US nuclear industry to use HDPE piping in essential service water applications at commercial power plants. The unique challenges posed by the use of HDPE in safety-related applications have led to the recent activities in the plastics pipe industry, ASME Code Committees, and US...

Author(s) : Tu Xiangqun, Wang Chao

Two kinds of comprehensions about the wall thickness of socket fusion fittings from GB/T 28799.3- 2012 have been analyzed in this paper. Socket wall thickness relative to the different value of pipe series of fusion fittings was calculated respectively, and two kinds of simplified calculation have been suggested. The...

Author(s) : Frans Scholten

When electro fused joints in newly installed PE100 pipelines are tested using the Peel test (ISO 13954 [1]) they too often fail in a brittle manner. Contamination in the interface between the surfaces to be fused is usually the cause. About 77 % of the contaminants in 39 cases of brittle test bars could be identified...

Author(s) : Dr. Z. Jimmy Zhou, Jim Johnston

Heat fusion joining method has been widely used for thermoplastic piping materials such as polyethylene to form the “one-material” pipeline system. No additional 3rd party materials such as an adhesive are needed. The fusion procedures to ensure the quality of the joints could be different for different materials and...