PPCA papers

In this section, you will find a database of all articles presented and published by PPCA in biannual conferences organized by PPCA since 1970.
You have access to a generic search, or to an advanced search, by preset keywords.


Inspection results of damaged polyethylene electrofusion joints using ultrasonic imaging method

Author(s) : Seong Hee Kil 2012 Barcelona

Non destructive testing methods of electrofusion(EF) joints of thermoplastics pipes are required for fusion joint safety and for the long term reliability of a pipe system. Electrofusion joints, which are joined at the proper fusion process and procedures, may encounter defects due to the difference of ovality...

Introducing PP-HM Materials for Twin Wall Corrugated Pipes in China

Author(s) : Xu Yijiong, Liu lIangbing, Dongyu Fang, Cindy Wang, Jarmo Juhani Harjuntausta, Youssef Taha 2012 Barcelona

Key words: Corrugated pipe, PP-HM, PE, sewage, drainage Whilst plastic pipes are already used in China for underground sewage and drainage applications the properties and processing limitations of the materials used are such that they are not able to fulfill all the requirements for large diameter or higher...

INVESTIGATION AND COMPARISON OF ACCELERATED PIPE TESTING DATA WITH TRUE PIPE INSTALLATIONS IN CONTACT WITH CHLORINE DIOXIDE AS DISINFECTANT

Author(s) : Jarno Hassinena and Karin Jacobsonb 2012 Barcelona

This paper discusses the mechanisms responsible for the degradation of polyolefin pipes in chlorine dioxide. Studies of random co-polymer polypropylene, PP-R pipes that have been exposed in service connected to ClO2 disinfection systems are compared to data generated at accelerated laboratory conditions. The test...

Investigations on drinking water in contact with PE-RT materials

Author(s) : Amaia Bastero 2012 Barcelona

Drinking water needs to be healthy, clean and tasteless and its quality at the tap is determined by microbiological, chemical and organoleptic parameters. Currently in Europe, the compliance with the national drinking water regulations is required and the absence of a harmonized European regulation...

Jointing of large bore PE pipes

Author(s) : Eckert Robert 2012 Barcelona

A New Generation of Electrofusion: A technical comparison between the new wedge coupler and the traditional cylindrical coupler for PE pipes d1000 (40”) and above. FRIATEC has developed a totally new concept of electrofusion jointing method for large bore PE pipes, d1000 mm (40”) and above. The new method...

Large Diameter PE Pipes for Combined Sewer Overflow Applications

Author(s) : Groen Gerry 2012 Barcelona

Designers are increasingly choosing to attenuate the peak discharge from combined (storm plus sanitary) sewers, and from storm sewers alone, by providing local storage. This enables waste water treatment to occur once a storm event has passed and there is capacity available in the waste water treatment facility. In...

LARGE PIPES – CHANCES AND CHALLENGES

Author(s) : Walter Häder 2012 Barcelona

 

Ligament Stress Regression of Notched PE100/PE4710 Pipe

Author(s) : Z. Jimmy Zhou 2012 Barcelona

(Keywords: Polyethylene pipe, ligament stress, regression, notch depth, lifetime.) Hydrostatic test was conducted on notched PE100/PE4710 black pipe specimens at various temperatures and stresses. Hoop stresses were normalized to ligament stresses by taking into consideration of the effect of wall thickness...

MACHINE AND CUTTING PROCESS FOR PP AND PVC-U EXTRUSION LINES PRODUCING SHORT PIPES FOR INDOOR SEWAGE

Author(s) : Giorgio Tabanelli and Marco Gulminelli 2012 Barcelona

Piping systems for indoor sewage usually use PP and PVC-U socketed pipes with diameters no greater than 160 mm [6.30"]. The pipes are short in length in comparison to pipes used in outdoor sewage or in pressurised water distribution networks. Pipes less than three metres in length are produced, and there is...

Molecular and morphological parameters governing yield failure of PE pipe materials

Author(s) : Anna M. Hartl, A. Buryak and R.W. Lang 2012 Barcelona

The ductile behaviour of PE in Region I of the pipe failure regime is mainly governed by the time/ and temperature-dependent yield stress of the polymer [1]. Two different deformation mechanisms are relevant in PE. One governing shorter times and/or lower temperatures and the other longer times and/or higher...



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