Case Studies from Around the World
Plastic Pipes Conference Association # 2004 Milan
Roberto Di Lucchio
This speech shown the results of the two experiences with polyethylene PE 100 pipes for the natural gas distribution, carried out by Camuzzi in 1999th and 2001st, respectively in Italy and in Argentina. The pipeline in Italy reached the actual allowed pressure limit for the gas, i.e. 5 MPa. In Argentina, was possible to build the pipeline with a 10 MPa pressure, testing also the performances of the excess flow devices Gas Stop, both for the services and for the pipeline. The materials, the welding and installation procedures were tested in accordance with the Italian and European standards, under quality control of external bodies, like the Istituto Italiano dei Plastici (Italian Plastics Institute), in Italy, or the Istituto del Gas Argentino IGA (Argentinean Gas Insitute). Theses experiences were very useful to increase the polyethylene use for the gas networks both in Italy and in Argentina. An other result was the introduction of the excess flow valves for the pipelines, to increase the gas networks safety.
Author(s) : Herbert Terwyen, Roberto de Palo, Manuel Sanchez
New standards in Italy legally require that chlorine dioxide is used as a disinfectant in any new installation that treat water for human consumption. Chlorine dioxide is preferred to other disinfectants when surface water or water from rivers is used for drinking water supply and particularly Southern European...
Author(s) : Univ.-Prof. DI Dr. mont. Gerald PINTER, DI Florian ARBEITER
Applying scientifically well established and investigated linear fracture mechanic methods (LEFM) the kinetics of the slow crack growth (SCG) on polypropylene layers and coextruded interfaces on multi-layer-pipes could be investigated. Taking effects of ageing and stress relaxation during the service lifetime into...
Author(s) : Maurizio Di Trapani, Flavia Marino
Within the water sector, AMAP S.p.A. is one of the oldest companies in Italy, as we have been managing the Water System in the city of Palermo (which is the capital of Sicily) for over one hundred years. The water distributed by AMAP S.p.A comes from the following sources, spread around the Province of Palermo: four...