Page - 625 - in Book of Full Papers - Symposium Hydro Engineering

for slurry dredging. For security reasons a stock pump has been located at the job site just in case, because the respect of the total time (100 days) was mandatory, but this pump has been never used. In addition, the high efficiency reached by the dredging system, and the capacity to work 24 hours per day along three shifts, allowed the Con- tractor to get the bonus made available by the Client. The system used for the topographic surveys (multi – beam) made at the beginning, in an intermediate time, and at the end of the job, has proven high reliability and a good level of precision. The Client really appreciated the job done by THETIS COSTRUZIONI and DRAGFLOW, their availability to discuss together the best solutions to be proposed to overcome usual small problems that sometimes happen during dredging activity, and their proac- tive attitude. REFERENCES [1] MOLINO B., MOSCHETTO M.P., SALOMONE M. L’interrimento dei serbatoi artificiali - I sedimenti: un problema una ri- sorsa Centro Studi di Economia Applicata all’Ingegneria, 2010 - 2013 SUMMARY This paper deals with the technology proposed and used to remove sediments settled nearby Ambiesta dam, located in the eastern part of Alps, Friuli Venezia Giulia region, Italy. In the Document many aspects have been detailed starting from design data needed to correctly design a dredging sys- tem, Client’s requirements, characteristics of dredging system detailing all the components, and finally achieved results. Dredging activity has been de- veloped fulfilling total time established by the Client, and the Contractor got the bonus offered by the Client if the job had been completed on time. Ce rapport concerne la technologie proposée et utilisée pour enlever les sédiments installés à proximité du barrage d'Ambiesta, situé dans la par- tie orientale des Alpes, région Friuli Venezia Giulia, Italie. Dans le document de nombreux aspects ont été détaillés à partir des données de conception nécessaires pour concevoir correctement un système de dragage, les exi- gences du Client, les caractéristiques du système de dragage détaillant tous les composants, et enfin les résultats obtenus. L'activité de dragage a été 625