Intentional contamination of water distribution networks: developing indicators for sensitivity and vulnerability assessments
Contamination intentionnelle des réseaux d'alimentation en eau potable : de nouveaux indicateurs pour analyses de vulnérabilité, de sensibilité et de criticité
Nafi, A. ; Crastes, E. ; Sadic, R. ; Gilbert, D. ; Piller, O.
Type de document
Article de revue scientifique à comité de lecture
Affiliation de l'auteur
IRSTEA LYON UMR GESTE FRA ; IRSTEA LYON UMR GESTE FRA ; UNIVERSITY OF BRITISH COLUMBIA KELOWNA CAN ; IRSTEA BORDEAUX UR ETBX FRA ; IRSTEA BORDEAUX UR ETBX FRA
Résumé / Abstract
Performing a comprehensive risk analysis is primordial to ensure a reliable and sustainable water supply. Though the general framework of risk analysis is well established, specific adaptation seems needed for systems such as water distribution networks (WDN). Understanding of vulnerabilities of WDN against deliberate contamination and consumers’ sensitivity against contaminated water use is very vital to inform decision-maker. This paper presents an innovative step-by-step methodology for developing comprehensive indicators to perform sensitivity, vulnerability and criticality analyses in case of absence of early warning system (EWS). The assessment and the aggregation of these indicators with specific fuzzy operators allow identifying the most critical points in a WDN. Intentional intrusion of contaminants at these points can potentially harm both the consumers as well as water infrastructure. The implementation of the developed methodology has been demonstrated through a case study of a French WDN unequipped with sensors.
Stochastic Environmental Research and Risk Assessment, 12 p.