Search for dissertations about: "nuclear waste repository"

Showing result 21 - 25 of 41 swedish dissertations containing the words nuclear waste repository.

  2. 21. Solubility of Np(IV), Zr(IV), and Reactive Transport Modeling with Uncertainty Calculations

    Author : Göran Källvenius; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Sweden, as some other countries, is planning to construct a repository for long-lived low and intermediate level radioactive waste. The planned repository is a concrete construction in the bedrock a few hundreds of meters below the surface. READ MORE

  4. 22. Homogeneous radiolysis studies using 238Pu

    Author : Lovisa Bauhn; Chalmers tekniska högskola; []
    Keywords : gas mass spectrometry; alpha-radiolysis; plutonium oxidation;

    Abstract : Used nuclear fuel contains radiotoxic elements with lifetimes in the range of 100 000 years. Although possibilities for recycling of the fuel exist, a final storage for the ultimate high-level waste will be necessary. READ MORE

  5. 23. The bentonite barrier : microstructural aspects on colloid filtration and radiation effects on bentonite colloid stability

    Author : Michael Holmboe; Mats Jonsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chemistry;

    Abstract : In many countries a multi-barrier concept in a deep geological repository is planned for final disposal of nuclear waste. Many of these different concepts, for example the Swedish KBS-3 model, include an engineered barrier consisting of compacted bentonite. READ MORE

  6. 24. Water density impact on water flow and mass transport in rock fractures

    Author : Helen Winberg-Wang; Longcheng Liu; Ivars Neretnieks; Andrew Frampton; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tracer experiments; solute transport in fractured rock; advection-diffusion experiments; repositories; equivalent flowrate.; Spårämnesexperiment; ämnestransport i bergssprickor; advektion och diffusionsexperiment; slutförvar; ekvivalent flöde.;

    Abstract : One way of taking care of spent nuclear fuel is to place it in a geological repository. In Sweden, a three-barrier system is planned. The system is based on encapsulating the fuel in copper canisters. These are surrounded by bentonite clay and buried under 500 m of bedrock. READ MORE

  7. 25. Modelling Some Biochemically Processes in Rocks

    Author : Magnus Sidborn; KTH; []
    Keywords : ;

    Abstract : A model for studying oxygen depletion in subsurfacefractured rock have been developed. It is based on currentknowledge in several different reasearch disciplines such asgeology, microbiology and hydrology. The model may be a usefultool for predicting oxygen penetration in rock fractures. READ MORE