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  • 2013:36 Technical Note, Review and assessment of aspects of the Qeq concept – Main Review Phase

    This technical review assignment considers the models and abstractions that Swedish Nuclear Fuel and Waste Management Company (SKB) developed to represent transport of dissolved constituents in the near field at the Forsmark site, in particular the Qeq abstraction for diffusive transport. SKB uses the Qeq parameter to scale concentration gradients in order to estimate dissolved-species fluxes...

    Innehållstyp: Publikationer
  • 2013:13 Review of Dismantling Costs - Nuclear Installations

    In this study three reviews of cost assessments for some smaller nuclear installations are presented for which nuclear waste liabilities shall be accrued according to the Financing Act (Lag (2006:647) om finasiella åtgärder för hanteringen av restprodukter från kärnteknisk verksamhet). It is expected that these reviews will contribute to develop premium quality assessments...

    Innehållstyp: Publikationer
  • 2012:67 Technical Note, Hydrogeological modelling of the Forsmark site

    A modelling study has been conducted using discrete-fracture network (DFN) models in combination with discrete-feature hydrogeological modelling methods for representation of other potentially conductive features such as the disturbed zone around repository tunnels. The principal results consist of hydraulic and transport property estimates for discrete-fracture network (DFN) models on block...

    Innehållstyp: Publikationer
  • 2012:71 Identification of Brittle Deformation Zones and Weakness Zones

    In preparation for the review of Swedish Nuclear Fuel and Waste Management Company’s (SKB) license application for disposal of spent nuclear fuel, Swedish Radiation Safety Authority (SSM) is conducting studies to evaluate the performance of the multi-barrier principle on which the KBS-3 concept is based. Copper canisters containing the spent nuclear fuel are placed into granitic bedrock at...

    Innehållstyp: Publikationer
  • 2012:52 Technical Note, Shear movement of near-field rock due to large earthquakes

    The review assignment concentrates on the possible impact of large earthquakes on the shear deformation of large fractures in the repository volume. For this purpose a general review of some of SKB‘s top-level reports was carried out. The reports draw a generally consistent and to a considerable extend comprehensive picture of the potential impact on the repository integrity in case of the...

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

    SKB’s conceptual model for flow through the fractured rock at 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). The model for the highly fractured deformation zones includes several assumptions that are not strongly supported by data,...

    Innehållstyp: Publikationer
  • 2012:42 Technical Note, Initial review of physical properties and processes of the buffer and backfill – Installation and initial state

    The technical note briefly summarises the proposed designs and functions of the buffer and backfill, and examines SKB’s progress in manufacturing, installing and testing its proposed solutions. In brief, the review suggests that there are some procedural and practical engineering aspects (e.g., quality assurance procedures, backfilling rates) and several physical processes to do with the...

    Innehållstyp: Publikationer
  • 2012:64 Finansiella aspekter vid avveckling av kärnkraftverk (BWR)

    I studien presenteras i vilka situationer som en parametrisk ansats är tillämplig. Resonemang sätts in i en autentisk kontext genom att referenser görs till de förberedande aktiviteter som idag genomförs vid Barsebäcksverket. En tentativ slutsats är att den valda metoden är lämplig för att göra uppskattningar av de framtida kostnader...

    Innehållstyp: Publikationer