Curage du SAN Amont et du DES

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Within the framework of network asset management, inspection and diagnostic frequencies have been established to gain a thorough understanding of the structural condition of the works. Thus, the Sèvres-Achères emissary branch of Nanterre (SAN) and the Doubling of the Southern Emissary (DES) were partly diagnosed in 2011. For this reason, it is necessary to carry out cleaning followed by an in-depth diagnosis of the structure on this section. Emergency works may be carried out if necessary. The objective is to: - Reduce olfactory nuisances at access inspection chambers by removing the materials responsible for their formation and by eliminating gas emissions, - Restore the hydraulic capacity of the structure by removing deposits, - Perform a structural diagnosis of the structure and determine the need for rehabilitation works; The project consists of dewatering the structure, preparatory works post-cleaning, implementation of the means necessary for mechanized cleaning, waste evacuation, their transport, and treatment at an appropriate center Within the framework of network asset management, inspection and diagnostic frequencies have been established to gain a thorough…

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