Water pipes inventory at a county level: the case of the Bas-Rhin - Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg
Communication Dans Un Congrès Année : 2002

Water pipes inventory at a county level: the case of the Bas-Rhin

Inventaire de réseaux d'eau potable à l'échelle départementale : le cas du Bas-Rhin

Résumé

France, inland, is divided in 96 administrative counties called Départements managed by a county council. Département of Bas-Rhin counts 1,026 million inhabitants on 4 755 km2. The county council has to provide solidarity between territories among the population living in. So it has a social role and acts also for building infrastructure and equipment or for helping to do it, and so in particular for water infrastructure. It provides technical assistance and subsidies, for rural utilities essentially. In 1999, the association of French Départements decided to make pilot-inventory operations on the water networks in 8 Départements in order to explore the feasibility at this scale. The objective was to lay down good basis for a real asset management and renewal planning. Bas-Rhin is one of these. In 2000, data collecting has been realised on an area concerning 623 000 inhabitants in rural villages and medium size towns: 50 000 pipe elements and 14 000 works have been registered. The aim of the methodology was to collect a maximum of information on the pipe, its environment, its equipment and its failure history. Several inquiry teams worked on it. The quality of data allowed to perform a data analysis on a sample of 100 water utilities representing 10 994 pipe elements, considering pipe failure events and possible explanatory parameters. Several methods where applied such as multiple component factorial analysis, segmentation, scoring , to be able to determine the pipe failure risk. This paper will first present the data context before the inventory process, the methodology used by the different inquiry teams for the data collecting in order to stress out the specificity of a detailed inquiry at such a geographic scale. Then the data analysis methodology and the results will be briefly followed by an insight of renewal policies which can be based on such an analysis.
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Dates et versions

hal-02587628 , version 1 (15-05-2020)

Identifiants

Citer

C. Werey, J.L. Janel, G. Gandon, I. Mellac Beck, J.P. Villette. Water pipes inventory at a county level: the case of the Bas-Rhin. DMinU&CE 3rd International Conference on Decision Making in Urban & Civil Engineering, London, GBR, 6th-8th november 2002, 2002, pp.6. ⟨hal-02587628⟩
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