Print Email Facebook Twitter Emission free maintenance dredging in a harbour environment Title Emission free maintenance dredging in a harbour environment Author van Ingen, Floris (TU Delft Mechanical, Maritime and Materials Engineering) Geleijnse, Jan (TU Delft Civil Engineering and Geosciences) Curzi, Fabio (TU Delft Civil Engineering and Geosciences) Kingma, Pieter (TU Delft Mechanical, Maritime and Materials Engineering) Contributor van Rhee, C. (mentor) Rutten, M.M. (graduation committee) Henrion, Sebastian (graduation committee) Druiven, Hilbrand (graduation committee) Degree granting institution Delft University of Technology Date 2021-04-15 Abstract On request of Royal Boskalis Westminster N.V. a comprehensive research was performed regarding emission free maintenance dredging in a harbour environment. The project site is the Maasmond at the port of Rotterdam. It covers an area of almost 10 km2 and, on average, a monthly volume of 400.000 cubic meters of sediment needs to be dredged. The operations are currently performed using trailing suction hopper dredgers (TSHD). Several new fully working emission free concept work methods were designed. These were assessed using a multi-criteria analysis, where emphasis was placed on energy reduction, reliability, interference, risk and safety. Given the scope of this research, costs are not decisive. General conclusions for the solutions contain the splitting of the total process. As the energy consumption of a conventional hopper is too high to operate on a battery cell, the work method is split into three different processes being:(i) gathering, (ii) pumping and (iii) transportation. Two work methods scored best in this research, Sloped Water Injection Dredging (SWID) and the Fully Autonomous Submerged Dredger (FASD). SWID consists of Water Injection Dredging vessels, fixed structures and autonomous barges. FASD contains the design of a submerged dredging vessel. It can be concluded that a harbour environment is suitable to perform emissions free maintenance dredging with only small alterations to the current technology. Subject DredgingMaintenanceEmission FreeBoskalisHarbour To reference this document use: http://resolver.tudelft.nl/uuid:ec9c8074-0633-4873-b454-b17989d37324 Coordinates 51.950235, 4.1463090 Part of collection Student theses Document type student report Rights © 2021 Floris van Ingen, Jan Geleijnse, Fabio Curzi, Pieter Kingma Files PDF MDP317EmissionFreeDredging_1.pdf 63.8 MB PDF EmissionFreeDredgingMEMO_1.pdf 9.53 MB Close viewer /islandora/object/uuid:ec9c8074-0633-4873-b454-b17989d37324/datastream/OBJ1/view