ANALYS AV DRIFTSTÖRNNGSDATA FRÅN VATTENLEDNINGSNÄT / analysis of Break Data on Water Pipe Systems
This paper presents some of the results of a statistical smdy on reported bursts of water pipes in five swedish cities. The study is a part of a continuing project called PUFF, with the objective to develop guidelines for long-term maintenance and renewal of water and sewer pipe systems. The work was carried out by studying failures of water pipes relating to pipe age, year of installation, pipe material and climate. All reported bursts of water pipes that have occured during a ten to twenty year period was analyzed. To achieve a geographical distribution the following swedish cities were included in the study: Malmö, Västerås, Örebro, Eskistuna and Luleå. The annual variation of water main bursts was very big, which makes it difficult to find any trend.