A5023900337- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- Concrete and Cement Materials Research
- CO2 Sequestration and Geologic Interactions
- Reservoir Engineering and Simulation Methods
- Thermochemical Biomass Conversion Processes
- Corrosion Behavior and Inhibition
- Clay minerals and soil interactions
- Geology and Paleoclimatology Research
- Risk and Safety Analysis
- Concrete Corrosion and Durability
- Climate change and permafrost
- Innovations in Concrete and Construction Materials
- Cryospheric studies and observations
- Nuclear and radioactivity studies
- Electronic Packaging and Soldering Technologies
- Graphite, nuclear technology, radiation studies
- Geophysical and Geoelectrical Methods
- Radioactive Decay and Measurement Techniques
- Metal Extraction and Bioleaching
- Radioactivity and Radon Measurements
- Heat and Mass Transfer in Porous Media
- Rock Mechanics and Modeling
- Granular flow and fluidized beds
- Engineering and Materials Science Studies
Belgian Nuclear Research Centre
2011-2024
KU Leuven
2010-2018
Components of the so-called “multiple-barrier system” from waste form to biosphere include a combination containers, engineered barriers, and natural barriers. The Engineered Barrier System (EBS) is crucial for containment isolation in radioactive disposal system. number, types, assigned safety functions various barriers depend on chosen repository concept, form, radionuclides inventory, selected host rock, hydrogeological geochemical settings site, among others. EBS properties will evolve...
Abstract This opinion paper describes the major coupled T(Thermal)-H(Hydro)-M(Mechanical)-C(Chemical) processes in geological repository systems and frontier of related model development. Particular focus is made on analysis existing approaches open research questions with respect to further development codes models for realistic multi-scale simulations systems. These include use machine learning artificial intelligence acceleration computer codes; sensitivity analysis, inverse modelling...
The Supercontainer design is the preferred option for underground disposal of high level nuclear waste in Belgium. It consists a carbon steel overpack surrounded by thick concrete buffer. In this alkaline environment and under normal conditions (without ingress aggressive species), will be protected passive oxide film, which believed to result very low uniform corrosion rates. backbone RD&D strategy, aims provide confidence that integrity maintained at least during thermal phase, based on...
Abstract. The Rupelian clay in the Netherlands is currently subject of a feasibility study with respect to storage radioactive waste (OPERA-project). Many features need be considered assessment long-term evolution natural environment surrounding geological disposal facility. One these permafrost development as it may have an impact on various components system, including (hydrogeology), barrier (clay) and engineered barrier. Determining how deep might develop future desirable order properly...
The Supercontainer (SC) design is the preferred option for final disposal of high level nuclear waste and spent fuel in Belgium. SC consists a carbon steel overpack surrounded by very thick concrete buffer, contained within stainless envelope. In this highly alkaline environment annulus under normal conditions (without ingress aggressive species), will be protected passive oxide film, which believed to result low almost negligible uniform corrosion rates. This paper discusses modeling...
Abstract Through-diffusion experiments are conventional to measure the transport parameters of radionuclides in clays. Typically, a regular replacement outlet volume by tracer-free is performed. In classical approach, this type through-diffusion experiment modelled assuming zero concentration volume. Nonetheless, assumption not always correct, usually because insufficiently large or time between two consecutive replacements too long. Therefore, model was developed disregarding and, instead,...
In this work, a first reliability assessment of cells in which the standard Ag screen printed front side metallization is replaced by electroplated Cu, made. The thermal stability Ti/Cu plated investigated ageing tests for temperature range between 175 and 300 o C. time at threshold value 5% cell efficiency degradation occurs, follows linear relationship Arrhenius plot. This indicates similar failure mechanism diffusion throughout range. Cu are also used preparing 1-cell modules order to...
This article provides data on the near-surface repository for nuclear waste in associated Research "Comprehensiveness of scenarios safety assessment repositories" [1].We illustrate i) parameters COMSOL Multiphysics model calculating radiological impact repository, ii) set analyzed following a pluralistic approach, and iii) nodes, experts' beliefs prior probabilities scenario analysis based Bayesian networks.
Low temperature thermal carbonisation might be the ultimate solution to growing disposal problem of CCA-treated waste wood.This energy and material recuperating technology is currently in process upscaling an industrial level.In present study, axisymmetric two-dimensional simulation model developed that allows investigate char yield emissions tars, combustible gases arsenic during carbonization CCA-wood a moving bed reactor.The influence hot gas flow rates, wood residence time convective...
Abstract Assessing the long-term safety of a deep geological repository for disposal radioactive waste depends on an adequate understanding processes governing radionuclide transport. From early days research in clay Belgium, large-scale, situ migration experiments were started to test whether our knowledge acquired about small-scale samples can be scaled up time and space. These use multi-filter piezometers introduce radiotracers ‘source filter’ monitor their breakthrough ‘monitoring...
Abstract Twenty-five years ago, a unique long-term and large-scale in situ experiment with 14 C-labelled natural organic matter (NOM) was set up at the HADES underground research facility Mol (Belgium) to study its migration behaviour. Natural plays an important role mobility of various safety-relevant radionuclides, which is critical context Safety & Performance Assessment (SA/PA) calculations for possible nuclear waste repository. The objective this work enlarge confidence current NOM...
Abstract. The Rupelian clay in the Netherlands is currently being subject of a feasibility study with respect to storage radioactive waste (OPERA-project). Many features need be considered assessment long-term evolution natural environment surrounding geological disposal facility. One these permafrost development as it may have an impact on various components system, including (hydrogeology), barrier (clay) and engineered barrier. It thus seems crucial determine how deep will develop, order...