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SecurEau : sécurité et décontamination d’un réseau d’eau potable

Abstract : The contamination of drinking water infrastructures (catchment areas, raw water transfer systems, treatment facilities, treated water reservoirs and distribution networks) with CBRN (chemical, biological, radionuclides) as a result of malevolent acts of sabotage represents one of the major threats that security has to face with. Rapidly restoring the functionality of such infrastructures, and the access to safe drinking water represents another major concern for regulatory agencies and water utilities. Indeed, the damage resulting from impairment of drinking water services would seriously impact the quality of life of many people not only by directly harming them but also making water systems unusable for a long period of time with a risk of societal disorder (similar situation as with any accidental contamination events or natural disasters). Such accidental or malevolent contamination events determine a crisis situation, which affects or is likely to affect a water utility or its provided services, and require more than the usual means of operation and/or organisational structures to deal with it. The ISO 11830 standard on crisis management describes the fundamentals of a crisis management system. ISO 11830 provides general guidance on how a crisis should be dealt with (“crisis phase”), on how to re-establish services (post-crisis phase), and on the best way to draw conclusions and revise procedures for future events. A large number of “preventive” actions have to be taken/implemented on a routine basis before the crisis, and recovery activities can start during the crisis phase. At the same time, specific scenarios for supplying potable waters (distribution of bottled waters, water tankers, emergency water treatment mobile systems, and so on) also have to be developed. In this context, SecurEau (a European project for restoring distribution system functionality after deliberate CBRN attacks involving 12 partners from six countries) has defined four research and development objectives: tools for detecting water quality changes by combining generic non-specific and specific sensors for measuring unexpected / abnormal signal variations (and to be integrated in an Early Warning System); methods for identifying the best locations for sensors for full coverage monitoring; methods for treating the data collected every five minutes by the network of sensor; methods for rapidly identifying the source(s) of any intentional contamination thanks to accurate mathematical procedures and new software; multi-step strategies for cleaning distribution systems: pipe walls / biofilms / deposits and waste (water bulk and deposits extracted from the network); analytical methods for confirming cleaning procedure efficiency taking into account especially the pipe walls.
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https://hal.univ-lorraine.fr/hal-01507634
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Submitted on : Thursday, April 13, 2017 - 2:41:19 PM
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Sylvain Fass, J.C. Block. SecurEau : sécurité et décontamination d’un réseau d’eau potable. Techniques Sciences Méthodes , ASTEE/EDP Sciences, 2014, pp.23 - 37. ⟨10.1051/tsm/201403023⟩. ⟨hal-01507634⟩

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