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.


Evaluation of the S4 test (iso 13477) for large diameter polyethylene pressure pipes.

 

Fracture - RCP

Plastic Pipes Conference Association # 2004 Milan

J. Vienne, Ph. Vanspeybroeck

Since the official introduction of the S4 test in several ISO and CEN standards, different test institutes have achieved experience in the RCP behaviour of polyethylene gas and water pipes. In most cases the S4 test is limited for smaller pipes up to a diameter 250 mm. This paper resumes the results recently obtained by Becetel, on different PE 100 resins, especially on pipes with diameters from 160 mm up to 900 mm. The influence of the extrusion parameters (cooling rate, extrusion speed) are examined and reported. Several techniques have been used in this study to characterise the extrusion conditions (crystallinity, the melt behaviour, the OIT, the internal stresses, etc.,) These results permit to improve the intrinsic quality of large polyethylene pipes in conjunction with an improved RCP behaviour.

Please note that the whole article content is available on PPCA website only :

Related papers

2016 Berlin : Long-term behavior of glass fiber reinforced polyethylene

Author(s) : Mitsuaki Tokiyoshi, Philippe Vanspeybroeck, Kensei Inoue, Stephan Fullgrabe, Takashi Kuriyama, Toshinori Kawabata, Joji Hinobayashi

Big diameter polyethylene pipes used an important role due to superior performance (Flexibility, light weight, long lifetime and tighten joint) for water and industrial supply to several countries. However according to standard concerned Polyethylene pipes as like ISO4427 we are being used solid wall pipe with too...

2014 Chicago : Evolution of the Pipe Accelerated Notch Test – PANT-Method

Author(s) : Ph. Vanspeybroeck

As the resistance to notches of the new PE 100 RC materials continuously improves, the classical control methods - as mentioned in the product standards - of PE have to improve consequently. Indeed, the resin compound producers now have pipe qualities with notch resistance far beyond 1000 h. It was necessary to “look”...

2014 Chicago : Performance of Polyethylene Pipes with Glass Fiber

Author(s) : M.Tokiyoshi, H.Kudo, M.Endo, K.Inoue, N.Shibasaki, T.Nakayama, H.Matsukuma, M.Kodera, Y.Niinomi, M.Masuko, P.Vanspeybroeck

Polyethylene pipes are successful worldwide due to the superior performance (Flexibility, light weight, lifetime, tighten joint) for water and sewerage supply. However according to our ISO standard concerned Polyethylene pipes we have to use solid wall pipe with too thick against for internal pressure. The major job...

2012 Barcelona : Pipe accelerated norch test: PANT method

Author(s) : Vanspeybroeck

As the resistance to notches of the new PE 100 RC materials continuously improves, the classical control methods - as mentioned in the product standards - of PE has to improve consequently. Indeed, the resin compound producers have now pipe qualities with notch resistance far beyond 1000 h. It was necessary to "look...

2010 Vancouver : Pe-glass fibre reinforced pipe systems dn 40 - 10 bar according to iso cd 29561 - New opportunites for water supply

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...

2006 Washington DC : Evaluation of Electrofusion Welders

Author(s) : Vanspeybroeck

Since 1997 electrofusion welders have been evaluated in Belgium on continuous basis.Parallel during this decade, traceability according to ISO 12176-4 : “Plastics pipes and fittings - Equipment for fusion jointing polyethylene systems - Part 4: Traceability coding” has been introduced by the Belgium gas...

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...

2004 Milan : Molecular Oriented PVC and PVC-U Pipes for Pressure Applications in the Water

Author(s) : Robeyns, Vanspeybroeck

Lifetime prediction of plastics piping systems plays an important key role when selecting new materials for pressure pipes. Practical experience during more than 50 years, demonstrates that PVC piping systems do not vanish after the lifetime as mentioned in the relevant national and international standards. PVC pipes...

2001 Munich : RCP Mastered by Two ISO-Tests

Author(s) : Vanspeybroeck

Although total safety in the gas industry may be an impossible dream, each engineer must definitely use every possible means to come near to this perfection. In view of this objective some gas companies join their efforts for combined research and development in order to improve standards or specifications and...

1998 Gothenburg : State of the Art of the Standard Extrapolation Method for Analysing Stress Rupture Data

Author(s) : Vanspeybroeck

Plastics pipes and fittings are used in all types of applications in the water, gas, sewer and other industrial applications, where long life (minimum 50 years) is needed.Early applications have already been reported since the year 1935, but the imp0rtar.t growth was after the years 1970. A steady stream of new...

1998 Gothenburg : The New Water Supply Pipeline for the Town of Palermo

Author(s) : Abdel, Vanspeybroeck

After a water supply crisis due to the age of the distribution system and insufficient sources of water, the Municipal Water Supply Co~npanyof Palermo (A.M.A.P.) decided in 1990 to proceed to the acquisition of a new "Preliminary Project of the water supply for the town of Palermo".Four engineers (Cesare Arici,...

1995 Edinburgh : Analysis of results of the Constant Tensile Load Test for Fused PE Gas Pipe Materials

Author(s) : Vanspeybroeck

This investigation was initiated because the producers, users and testing institutes of the same PE compound recommended different procedures for butt fusion. The major difference was in the pressure to produce the weld. The difference was obviously reflected in the shape of the fusion bead as shown in Figure 1. The...

1992 Eindhoven : New Test Methods to Evaluate the Resistance to Rapid Crack Propagation in Pressurized PE Pipes

Author(s) : Vanspeybroeck

This paper describes the test methods to study rapid crack propagation (RCP) behaviour of polyethylene (PE) pipes, including the evaluation of the correlations between different test methods. The test methods concerned are the Full Scale test, the Small Scale Steady State (S4) test, the Small Scale Steady State Scum...

Correlation Factor S4 Test

Author(s) : Vanspeybroeck

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationHanwha TotalEnergiesINEOS O&PIRPCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP