Deploying a sewer asset management strategy using the indigau decision support system

P. Debères (1) , Mehdi Ahmadi (2) , J.C. de Massiac (1) , Pascal Le Gauffre (2) , Frédéric Cherqui (2) , Caty Werey (3) , K. Nirsimloo (1)

1 G2C - G2C environnement
2 LGCIE - Laboratoire de Génie Civil et d'Ingénierie Environnementale
3 UMR GSP - Gestion des services publics

This paper presents the first real implementation of INDIGAU asset management toolbox based on French national RERAU methodology. This toolbox allows the utility manager or consultant to define a rehabilitation program using CCTV reports and other indicators such as economic, social or environmental indicators. The methodology is described and each element of the toolbox is briefly introduced: conversion of CCTV reports in EN 13508-2 coding system, assignment of a condition grade to a segment using CCTV report, and combining complementary indicators for assessing the rehabilitation criteria. The INDIGAU toolbox is applied on a length of about 99 km of sewers (10% of the network) of Caen-la-Mer urban community. The segments to be rehabilitated are identified using a multi-criteria analysis. This study shows the feasibility of calculating complementary rehabilitation criteria by combining indicators derived from various sources: visual inspection reports, network monitoring, operation costs, data related to the urban environment. INDIGAU also aims to organize a publicprivate R&D process: the INDIGAU user club involves utilities (end-users), researchers and the softwareprovider, aiming at fuelling continuous enhancement of the toolbox, sharing of best practices and pooling of case studies for research purposes.

Domaines: Sciences de l'environnement

P. Debères, Mehdi Ahmadi, J.C. de Massiac, Pascal Le Gauffre, Frédéric Cherqui, et al.. Deploying a sewer asset management strategy using the indigau decision support system. 4th Leading-edge conf. on Strategic Asset management, LESAM, Sep 2011, Mülheim, Germany. pp.1-11. ⟨hal-00663965⟩