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  • 2014:33 Technical Note, Reproduction of SKB’s Canister Failure Calculations - What-If and ‘Residual’ Scenario to Illustrate Barrier Functions

    analysis of a range of scenarios in its SR-Site report.  SKB grouped these scenarios into two categories—main and residual.  The main scenario included a likely scenario (corrosion failure) and a less probable ... included two unlikely scenarios—isostatic-load and growing pinhole failures.  For each of the scenarios, SKB analysed a reference case and several variations (created by altering features and processes, and...

    Innehållstyp: Publikationer
  • 2014:38 Technical Note, Detailed assessment of radionuclide Kd-values for the geosphere-main review phase

    Company (SKB) in 2011 to construct and operate a deep geologic repository for spent nuclear fuel at the Forsmark site in the municipality of Östhammar, Sweden.  SKB has presented details of its long-term ... long-term safety assessment, SR-Site, in a main report (SKB, 2011, TR-11-01) and in multiple supporting technical documents that are cited by the main report.  In developing the safety case for SR-Site, SKB identified...

    Innehållstyp: Publikationer
  • 2014:19 Evaluation of the Halden IFA-650 loss-of-coolant accident experiments 5, 6 and 7

    use and develop, contain models of several of the phenomena that are acting on the nuclear fuel (cladding temperature, fission gas driven pressure, strain and stress in the cladding, rod rupture, etc.) ... separate effects interact in the complex integrated manner. The codes are under constant development and need to be compared with actual tests. In this report simulations of three tests in Halden (IFA-650.5,6...

    Innehållstyp: Publikationer
  • 2014:18 Evaluation of the Halden IFA-650 loss-of-coolant accident experiments 2, 3 and 4

    use and develop, contain models of several of the phenomena that are acting on the nuclear fuel (cladding temperature, fission gas driven pressure, strain and stress in the cladding, rod rupture, etc.) ... separate effects interact in the complex integrated manner. The codes are under constant development and need to be compared with actual tests. In this report simulations of three tests in Halden (IFA-650.2,3...

    Innehållstyp: Publikationer
  • 2014:27 Regulation applying to welding of pressure equipment – a comparative study

    The PED was in force in November 1999 and has been mandatory in European Union Member States since May 2002. Most of the standards referred to in the PED are relatively new although some of the standards ... adopted in the early 1990s. On the other hand, the ASME B&PV Code has been used for a long time now and is the result of several decades of industrial experiences. The authors present a comparison of requirements...

    Innehållstyp: Publikationer
  • 2014:50 Technical Note, A Study of Availability of Fuel Data for Sweden’s Spent Nuclear Fuel

    The study covers all types spent fuel ... planned to be placed in the final repository. It was carried out by selecting a sample of spent fuel and investigating the information available at the Nuclear Power Plants (NPP’s) in Sweden, the Central...

    Innehållstyp: Publikationer
  • 2014:29 Technical Note, Independent Modelling of Radionuclide Transport, Evaluation of Colloid Transport Modelling – Main Review Phase

    SKB excludes consideration of colloids originating inside the canister in its performance assessment on the basis of the filtration capability of the buffer material.  In the canister failure by corrosion ... filtration argument is not entirely valid for excluding modelling in-canister colloids.  In this Technical Note, we evaluate the relevance of colloids to dose estimates, including the eroded buffer case. ...

    Innehållstyp: Publikationer
  • 2014:43 Technical Note, Workshop on general corrosion of copper

    This report describes the outcome of the workshop organized by SSM on general corrosion of copper that was held in Stockholm on the 26-27th of August, 2013. The report summarizes the issues discussed and ... considered as a comprehensive record of all the discussions at the workshop and individual statements made by workshop participants should be regarded as opinions rather than SSM’s point of view. Based on...

    Innehållstyp: Publikationer
  • 2014:47 Technical Note, Assessment of groundwater salinity evolution at repository depth and especially the impact of dilute water infiltration

    entering deposition holes in the repository will be progressively diluted over time because of expected changes of topographic and climatic conditions at Forsmark.  This is a long-term safety issue because ... advective movement of sulphide-containing water to the canister surface.  SKB’s position in SR-Site is that the hydrogeological properties of the sparsely-fractured bedrock and the processes of water-rock reaction...

    Innehållstyp: Publikationer
  • 2014:05 Technical Note, Assessment of flows to deposition holes – Main Review Phase

    Forsmark is based on a division between highly fractured deformation zones (described in terms of deterministic geometry), and the more sparsely fractured rock (described in terms of statistical geometry) ... underestimation of groundwater flux through the repository volume. However, the impact of these assumptions on flows to deposition holes is judged to be minor, compared with uncertainties in the model for...

    Innehållstyp: Publikationer