Our site uses cookies necessary for its proper functioning. To improve your experience, other cookies may be used: you can choose to disable them. This can be changed at any time via the Cookies link at the bottom of the page.


Can PE and PVC gas distribution pipes withstand the impact of sustainable gases?

 

Papers # 2016 Berlin

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 conducted. The most important conclusion from this study is that Dutch gas distribution grids will not be degraded by sustainable gas provided that the gas is dry.

To evaluate the effects of different types of renewable gases on PE and PVC piping systems in existing gas networks, Kiwa Technology participated in a Dutch research programme, Energy Delta Gas Research (EDGaR). The goal was to determine whether sustainable gases could degrade the PE and PVC pipes, rubber seals and polymeric couplers used in the Dutch gas distribution grid to an unacceptable extent.

A literature survey was first conducted to identify the chemical components in sustainable gases, the concentrations of the components, and the possible effects on the plastic pipe and coupler materials. It was found that some combinations of polymers and gas components could lead to environmental stress cracking (ESC) or an acceleration of known degradation processes.

Extensive exposure tests were then conducted with environmental stress cracking test rigs built and designed for this purpose to study combinations of plastic pipe materials gas components in realistic gas grid conditions such as concentrations and applied pressure. A total of 1300 polymeric samples were tested using twelve different gas compositions.

Finally, after two years of exposure, the environmental stress cracking samples were subjected to non-destructive and destructive testing.

This paper presents the results: rubber, PE and PVC pipes can withstand the impact of sustainable gases and POM is degraded by sustainable gases.

Related keywords : Distribution, Renewable, Sustainable, Natural gas, Biogas, Biomethane, PE, PVC, Rubber, Pipe, Joints, plastic gas supply infrastructure, gas pipe, gas supply.
Please note that the whole article content is available on PPCA website only


Related papers

2018 Las-Vegas : A new flexible jointing method of plastic (PE) pipes

Author(s) : Yilaing He, Tianjun Zhang

A new electrofusion PE belt is developed by reinforcing it with various layers of steel mesh. It’s of sandwich structure, consisting of steel mesh reinforcement, heating wire and polyethylene. One or more layers of steel mesh is encapsulated in the middle, and heating wire is embedded onto “inner side” of the belt....

2018 Las-Vegas : A recent survey of water main failures in the US and Canada

Author(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 : Accelerated pipe test methods to evaluate PE 100-RC materials - Possibilities for iso standardisation

Author(s) : Thomas R. Kratochvilla, Raimund Eremiasch, Christoph Bruckner

In the last years effort has been made to develop and standardise new accelerated test methods to evaluate PE 100-RC materials in short times in form of test bars. The two most important developments, the cracked round bar test (CRB test) and the strain hardening test (SH test) were published as final ISO standards in...

2018 Las-Vegas : Biomimetic design concepts for the pipe architecture of tomorrow

Author(s) : Gerald Pinter, Florian Arbeiter, Johannes Wiener, Andreas Frank, Otmar Kolednik

In order to further increase the fracture toughness of pipes, biomimetic layer design of the pipe wall can be used. Therein, soft polymer interlayers can act as crack-arresters in a matrix of stiffer and inherently more brittle polymers. The effectiveness of the crack arresting role of soft interlayers in a...

2018 Las-Vegas : C-PVC-O, pushing limits beyond in molecular orientation

Author(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 : China plastic pipe industry - Technical progress and quality improvement

Author(s) : Wang Zhanjie

As the largest production country, with numerous applications, China’s plastic pipe industry is developing steadily to meet the demand and needs. This paper analyzes the current situation and barriers, and proposes the breakthroughs to achieve a sustainable, stable and healthy development of China’s plastic pipe...

2018 Las-Vegas : Considerations when restraining molecularly oriented PVC pipe

Author(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 : CPVC application in the fire sprinkler system in China

Author(s) : Jiang Tongjun, Fu Zhimin, Yang Yuanjin

This paper introduces the application of CPVC pipe in fire sprinkler systems in China. The advantages and differences of CPVC pipe versus to galvanized steel pipes, the improvement of related laws and regulations and the market outlook are discussed. The overall result is a change in the upstream and downstream...

2018 Las-Vegas : Design and qualification of PA-PERT pipe for oil and gas transportation

Author(s) : Liang Yu, Akshay Ponda, Dane Chang

Following the development of US shale oil and gas production since 2007, the demand for thermoplastic pipes with better corrosion resistance, and lower installation and operation cost than carbon steel pipe, has been growing significantly. Nylon 12 has been qualified for hydrocarbon transportation in offshore flexible...

2018 Las-Vegas : Determination of the slow crack growth resistance of PA12 pipe grades

Author(s) : Mario Messiha, Andreas Frank, Isabelle J. Berger, Jan Heimink, Hermann van Laak, Florian Arbeiter, Gerald Pinter

Since the last decade polyamide 12 (PA12) has been successfully introduced as material for SDR 11 gas piping systems up to 18 bar, representing itself as an attractive alternative to steel pipes for high-pressure applications. Practical experience has confirmed that beside the higher strength, PA12 pipe grades also...

2018 Las-Vegas : Development of polyethylene ball valve to pursue robustness

Author(s) : Ryosuke Nagahisa, Shinichi Katoh

We investigated the possibility of using a greaseless polyethylene (PE) ball valve by applying a coating on it to improve the valve’s robustness. In order to verify the valve’s operability, we performed initial-operating-torque, abrasion, and dust tests on both grease-applied and coatingapplied ball valves. These...

2018 Las-Vegas : Development status and technical requirements of composite insulating plastic pipe

Author(s) : HU Fa, LI Yue, GAO Yuanjie, ZHE Dongmei, WEI Ruoqi

This paper expounds the development status of composite insulating pipe in the heating and chemical fields from the aspects of materials, structure and application. Combined with the relevant standards and technical requirements, the performance advantages and the key evaluation methods such as axial shear strength,...

2018 Las-Vegas : Effect of beta-nucleation on aging and crack growth resistance of polypropylene exposed to chlorinated water

Author(s) : Joerg Fischer, Paul J. Freudenthaler, Patrick R. Bradler, Reinhold W. Lang, Susan C. Mantell

This research addresses the effect of nucleation on the global aging behavior and the fatigue crack growth (FCG) resistance of commercial alpha- and beta-nucleated polypropylene random copolymer pipe grades (PP-R) when exposed to chlorinated water (5 mg/l free chlorine) at an elevated temperature of 60°C. Comparing...

2018 Las-Vegas : Effect of carbon black distribution on polyethylene pipes

Author(s) : Suleyman Deveci, Nisha Preschilla, Birkan Eryigit

Pipes with inhomogeneous CB distribution showed 80% less elongation than pipes with homogenously distributed CB. Polymer domains with less or no CB (windows) showed delamination from the polymer matrix as the material elongated, finally leading to fracture much earlier than expected. In this study, we investigated the...

2018 Las-Vegas : Effect of eccentricity on the measurement of hydrostatic pressure resistance of plastic pipes

Author(s) : Suleyman Deveci, Birkan Eryigit, Senthil K. Kaliappan

The effect of eccentricity on the failure time of pipes under hydrostatic pressure test has a significant magnitude that it can easily mislead the evaluation of pipes according to requirement of ISO 4427-2. Therefore, authors propose a maximum relative eccentricity limit of 0.015, even lower, for pipes being tested...

2018 Las-Vegas : Engineering and testing requirements for infrastructure pipeline applications utilizing HDPE recycled materials

Author(s) : John Kurdziel, Michael Pluimer

Corrugated HDPE pipes have been successfully used for decades for sewers, culverts and land drainage applications and are advantageous due to their durability and service life in a variety of installation conditions. Pipes used for highway and storm sewer applications typically require stricter material standards than...

2018 Las-Vegas : Extrusion of thick wall pipes using a new bimodal PE 4710/PE 100 resin

Author(s) : Vivek Rohatg, Gregor Hiesgen, Mark J. Lamborn, Ashish M. Sukhadia, Douglas E. Simpson, David W. Borrego, Pamela L. Maeger

Maintaining dimensions within specifications is problematic for the extrusion of large diameter thick-wall polyethylene (PE) pipe (> 75 mm wall) due to sag caused by insufficient resin melt strength. However, sag can be controlled through careful resin selection and optimization of the pipe cooling process. This paper...

2018 Las-Vegas : Field test of Glass fiber reinforced polyethylene pipe system at soften ground

Author(s) : Mitsuaki TOKIYOSHI, Gentaro TAKAHARA, Joji HINOBAYASHI, Toshinori KAWABATA, Takashi KURIYAMA

Glass fiber reinforced polyethylene pipes and fittings are controlled for bending characteristics (Strength and stiffness) for vertical and axial directions of pipe by spiral cross winding method. Generally, to use this method, it takes much stronger for vertical strength than axials cause of extruded direction,...

2018 Las-Vegas : Guidelines for corrugated HDPE pipes manufactured with recycled materials for highway culvert and storm drain applications

Author(s) : Michael Pluimer, Richard Thomas

Over the past decade, there have been several key research projects to evaluate the performance of corrugated HDPE pipes manufactured with post-consumer and postindustrial recycled materials for highway and railroad drainage applications. Three of these projects were recently completed and published (NCHRP Project...

2018 Las-Vegas : High density polyethylene (HDPE): an overview of the first ever asme bPVC section iii, class 3 nuclear piping installation

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...

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationINEOS O&PIRPCKazanorgsintez PJSCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP