Fernandes, PJL2007-02-082007-06-072007-02-082007-06-071998-03Fernandes, PJL. 1998. Type I fitting of copper tubes from a water distribution system. Engineering failure analysis, vol 5 (1), pp 35-401350-6307http://hdl.handle.net/10204/1625http://hdl.handle.net/10204/1625This article discusses the outcome of an investigation of the failure of copper tubes from cold water distribution system carrying potable water in a shopping centre. Samples of copper tubes from a cold water distribution system which had failed due to pitting whilst in service were subjected to a detailed failure investigation. Analysis of the tubes showed that failure was a result of Type I pitting attack. While the exact cause of pitting was unknown, it was hypothesized that it could have been due to changes in the water quality and/or content. The tubes were found to be made from phosphorus de-oxidized copper and no anomalies were evident in either the chemical composition or the microstructure which could have caused the pitting observed. It was recommended that the tubes be replaced and that due attention be given to ensure that the new tubes are free of internal carbonaceous deposits or other foreign matter.421166 bytesapplication/pdfenCopyright: Pergamon-Elsevier Science LtdCorrosionsPitting corrosionsArticleFernandes, P. (1998). Type I fitting of copper tubes from a water distribution system. http://hdl.handle.net/10204/1625Fernandes, PJL "Type I fitting of copper tubes from a water distribution system." (1998) http://hdl.handle.net/10204/1625Fernandes P. Type I fitting of copper tubes from a water distribution system. 1998; http://hdl.handle.net/10204/1625.TY - Article AU - Fernandes, PJL AB - This article discusses the outcome of an investigation of the failure of copper tubes from cold water distribution system carrying potable water in a shopping centre. Samples of copper tubes from a cold water distribution system which had failed due to pitting whilst in service were subjected to a detailed failure investigation. Analysis of the tubes showed that failure was a result of Type I pitting attack. While the exact cause of pitting was unknown, it was hypothesized that it could have been due to changes in the water quality and/or content. The tubes were found to be made from phosphorus de-oxidized copper and no anomalies were evident in either the chemical composition or the microstructure which could have caused the pitting observed. It was recommended that the tubes be replaced and that due attention be given to ensure that the new tubes are free of internal carbonaceous deposits or other foreign matter. DA - 1998-03 DB - ResearchSpace DP - CSIR KW - Corrosions KW - Pitting corrosions LK - https://researchspace.csir.co.za PY - 1998 SM - 1350-6307 T1 - Type I fitting of copper tubes from a water distribution system TI - Type I fitting of copper tubes from a water distribution system UR - http://hdl.handle.net/10204/1625 ER -