Public Thesis Defense of Amit Ravindra PATIL - IMMC
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Modeling the impact of potential radioactive releases into the Meuse and Scheldt aquatic systems by Amit Ravindra Patil
Le vendredi 25 avril 2025 à 15h00 – Auditoire BARB91, place Sainte-Barbe à 1348 Louvain-la-Neuve
The Fukushima and Chernobyl disasters tragically illustrated the risks associated with the civilian nuclear industry. In Belgium, there are two nuclear power plants (Doel and Tihange), while two others are located near its borders on the banks of the Meuse River (Chooz) and Scheldt Estuary (Borssele). As a result, radioactive discharges from these nuclear power plants may have a direct impact on the Meuse and Scheldt aquatic systems, where the characteristics of the aquatic system (river, canal, or estuary) can determine how pollution is distributed. Hence, quantitative and qualitative understanding about the fate and transport of radioactivity in these water systems is required. Radiological transport models are tools in generating such information. They can help optimize emergency response strategies.
The water flow in the Meuse River, which is connected to Belgium's canal systems, is heavily influenced by hydraulic structures. The Scheldt system is a high-energy estuary that represents a domain of multiscale nature that deals with everything from the sea to the shallower environment.
In this work we develop a state-of-the-art methodology for assessing the impact of radioactive releases on the water quality in the Meuse and Scheldt aquatic systems, which can be used to deal with potential accidental releases. To this end, additional modules for the simulation of hydraulic structures are incorporated into SLIM (Second Generation Louvain-la-Neuve Ice-ocean Model: www.slim-ocean.be) modelling framework in order to simulate the radionuclide transport in the Meuse River and canal systems. The developed model is also able to simulate the operation of the structures and enables accurate flow calculation in such large navigation systems. For the Scheldt system, a new multiscale modeling approach for the transport of radioactive pollutants is used, allowing us to simulate complex systems in order to capture the main processes in the river-sea continuum. The developed model was then used for several hypothetical radioactive releases based on past nuclear accidents to assess the distribution of radioactivity in their respective aquatic systems. The simulated radioactive distributions eventually lead to estimate of impacts on humans.
Jury members:
Prof. Eric Deleersnijder (UCLouvain, Belgium), supervisor
Dr. Jonathan Lambrechts (UCLouvain, Belgium), supervisor
Prof. Renaud Ronsse (UCLouvain, Belgium), chairperson
Prof. Sandra Soares-Frazao (UCLouvain, Belgium), secretary
Dr. Fabricio Fiengo Perez (Aquafin, Belgium)
Prof. Benjamin Dewals (ULiège, Belgium)
Dr. Katrijn Vandersteen (SCK-CEN, Belgium)
Prof. Marilaure Grégoire (ULiège, Belgium)
Pay attention: the public defense of Amit Ravindra Patil will also take place in the form of a videoconference.