Telgen Hans
Papers # 2012 Barcelona
Abstract : In 2000 the PVC chain embarked in a ten year program to improve the environmental footprint of the PVC industry : Vinyl 2010. Challenging targets have been fixed and all of them have been achieved : recycling, substitution of heavy metals, energy saving etc. The pipe industry and specially the members of TEPPFA have plaid a key role in this great achievement. That’s why the industry has decided to continue this successful story with a new voluntary commitment : Vinyl Plus in which TEPPFA members will play again an essential role. This new commitment has been signed on June 2011 on behalf of TEPPFA members by TEPPFA Chairman with very ambitious targets for 2020.
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Author(s) : Lars Jacobsson, Hans Andersson and Linda Karlsson
Problems sometimes occur in tightness testing of plastic pipelines using pressurized water and accounting for the diametrical expansion, particularly so for larger sizes and higher pressure rating. Pipelines that are in fact tight enough for acceptance are rejected when first tested. A study consisting of two parts...
Author(s) : Lars Jacobsson, Hans Andersson, Daniel Vennetti and Sven-Erik Sällberg
Leakages are reported in flange joints of large pipelines for water supply although mounted according to recommended practise. FEM analyses and full scale experiments have been performed in order to better understand the functioning of the joints. The objectives were to find out about the sensitivity to mounting and...
Author(s) : Sven-Erik Sällberg, Kristian Thörnblom, Hans Sandberg
As trenchless installation techniques and coarse-grained backfill materials are gaining in interest for plastics pipelines, the influence from surface damage on the technical lifetime is becoming more and more important. For non-pressure applications, such as gravity sewers, this aspect is relevant, e.g., when...
Author(s) : Ulrich Schulte, Heinz Vogt, Hans-Friedrich Enderle, Dieter Lilge
The completion of a pressure test is mandatory for all new pipe systems. Its purpose is to demonstrate the overall leak-proof condition of the system. In the course of this test, HDPE pipes of SDR 17 class are exposed to high stress loads. In an extensive test programme, all failure mechanisms observed in long-term...
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