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Din avgränsning ger 28 träffar.

• 2014:30 Modelling Approaches to C-14 in Soil-Plant Systems and in Aquatic Environments

  carbon biogeochemistry already exists in the fields of plant physiology and aquatic ecology and therefore is it beneficial to draw on this to identify the important issues. A paper describing the BIOPROTA C-14 ... C-14 model inter-comparisons, and plans for the forward programme was published in Radiocarbon Journal. Further studies on C-14 (including modelling, model inter-comparisons, and experimental work) have...

  Innehållstyp: Publikationer

• 2012:11 Issues in the corrosion of copper in a Swedish high level nuclear waste repository

  The objective with this research project was to increase knowledge in the area of copper corrosion in the planned repository environment and obtain information on how copper corrosion evolves during the ... the assessment period of 100 000 years.  The equilibrium chemical composition of groundwater close to the canister as a function of temperature has been calculated by use of a thermodynamics code called...

  Innehållstyp: Publikationer

• 2017:15 Radionuclide release rates associated with bounding cases featuring relatively early canister failures in a spent fuel repository

  Background In 2011 the Swedish Nuclear Fuel and Waste Management Co (SKB) submitted a license application for construction of a geological repository for spent nuclear fuel according to the KBS-3 method ... method, comprising of copper canisters, bentonite buffer, backfill and surrounding crystalline bedrock. The post-closure safety assessment of the repository, SR-Site, has been reviewed by the Swedish Radiation...

  Innehållstyp: Publikationer

• 2022:11 Kingdom of Sweden IRRS ARM Summary Report 2022

  The IAEA Integrated Regulatory Review Service Mission to Sweden in November 2022...

  Innehållstyp: Publikationer

• 2016:01 Literature Study on Sparse Channel Interpretation and Modeling

  Channelling has been observed in laboratory and field experiments at various scales. However, it is still an open research issue whether a sparse channel network is likely to be a better model than the fracture ... the flow system in fractured rocks. The present report presents a literature study to bring together information useful for addressing this issue. Several key questions are discussed, namely (a) what are...

  Innehållstyp: Publikationer

• 2017:18 FEM analysis of the mechanical integrity for the canister intended for storage of spent nuclear fuel with regard to copper creep ductility

  Background For final storage of spent nuclear fuel it is suggested by the Swedish nuclear fuel and waste management company (SKB) to emplace the nuclear fuel into copper canisters which are surrounded ... emplacement of the canisters Bentonite swelling due to water saturation and hydrostatic pressure build up the canisters will be subjected to compressive loads. The canisters are constructed with a load carrying...

  Innehållstyp: Publikationer

• 2016:30 Measurement of Parameter Values for Predicting Corrosion Phenomena on Copper in Swedish HLNW Repositories

  for the isolation of high-level nuclear waste in Sweden, has been studied in simulated, sulphide- and chloride containing granitic rock groundwater and the data are interpreted in terms of the Point Defect ... The results indicated that a sulphide barrier layer forms on the copper surface, and that chloride ion can induce passivity breakdown, and hence induce the development of localized corrosion damage (LCD)...

  Innehållstyp: Publikationer

• 2017:02 Slow strain rate testing of copper in sulfide rich chloride containing deoxygenated water at 90 °C

  occur in materials from the combined influence of tensile stress and a corrosive environment. It has previously been shown in the literature, that copper can be sensitive to SCC in the presence of sulfide ... well as a material were SCC can occur, SCC could potentially be a problem for the copper canisters intended to be used for final storage of spent nuclear fuel. Testing materials susceptibility of SCC can...

  Innehållstyp: Publikationer

• 2022:08 Geophysical surveys on sub marine land- and rock slides and on alpine glaciers

  future climate evolution and the impact it might have on a repository for radioactive waste is important when assessing the long-term safety. In a project funded by SSM (Holmlund et al. 2016), bathymetric ... as terrestrial data from a glacial morphological mapping campaign. A broad range of landforms could be observed in these data and the overall glacial morphology pointed towards a powerful glacial impact...

  Innehållstyp: Publikationer

• 2023:14 Effect of gamma-irradiation on the redox states of the structural iron in bentonite clay

  barrier in the spent fuel repository. The buffer material surrounding the copper canister will be exposed to gamma and neutron radiations, especially during the first few hundred years after closure of the ... states of the structural iron in montmorillonite, the dominant mineral in bentonite, have been shown to be sensitive to such irradiation in experimental studies using suspended bentonite. The change of the...

  Innehållstyp: Publikationer