Modelling the deterioration of water mains and planning their renewal

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ConferenceInfra 2002 International Conference on Urban Infrastructure: 25 November 2002, Montreal, Quebec
Pages113; # of pages: 13
Subjectdistribution mains, transmission mains, rehabilitation, costs, hydraulic, water quality , water mains failure frequencies; Water mains
AbstractThe effective planning of water distribution system renewal requires accurate quantification of the structural deterioration of water mains. As typical water distribution systems comprise hundreds and even thousands of buried pipes, direct inspection of all of them is often prohibitively expensive. Identifying water main breakage patterns over time is an effective and inexpensive alternative to measure the structural deterioration of a water distribution system. National Research Council of Canada is developing a prototype computer application to help model the deterioration rates of water mains and subsequently plan their renewal.The analysis of water main breakage patterns considers time-dependent factors such as temperature, soil moisture (rainfall deficit), main replacement rates and cathodic protection (CP) strategies, including hotspot CP as well as methodical retrofit CP. The influence of each of these factors on pipe breakage rate can be quantified to (a) identifythe ?true? background deterioration rates of buried water mains, and (b) project the impact of various operational strategies on future breakage rates. Once the background ageing rates of water mains are known, their life cycle costs can be evaluated. As well, the future impact of various operational strategies on these life cycle costs can be assessed. Subsequently, strategies can be fine-tuned to achieve maximum efficiency in resource allocation.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46119
NPARC number20386132
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Record identifier227b8acd-7899-4e80-9b6b-286aba3c1e10
Record created2012-07-25
Record modified2016-05-09
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