Din avgränsning ger 996 träffar.
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2017:19 Numerical simulations of headed anchors break in reinforced and non-reinforced concrete structures, Phase 2
ASCI 349-06 code opens up for a more detailed analysis where the beneficial impact of reinforcement on anchor capacity can be taken into account. How this analysis can be done is, however, not explicitly ... fill this gap. Inspecta Nuclear AB and Scanscot Technology AB have, in a previous work funded by SSM (SSM 2013: 27), studied the possibility to transfer mechanical loads from embedded anchors to the concrete...
Innehållstyp: Publikationer -
2016:28 Fatigue fracture surface characterization and investigation
Background In a previous study (SSM research report 2015:38) fatigue experiments were performed on welded austenitic stainless steel piping components. The fatigue experiments offer an opportunity to examine ... increased the understanding of fatigue critical points in welds, as well as it has increased knowledge on where fatigue cracks initiated and how propagation occur in the welded austenitic stainless steel pipes...
Innehållstyp: Publikationer -
2014:32 Technical Note, Assessment of the derivation and use of distribution coefficients and concentration ratios – Main Review Phase
The method applied by SKB to derive the CR and Kd values are based on a Bayesian approach that combines literature values with in-situ, on site data. Whilst the numbers of site data were often limited the ... account results below the limits of detection. Nicholas Beresford, Patrick Boyer and Brenda Howard SSM English This report presents a review of the approaches and databases which SKB have used to derive...
Innehållstyp: Publikationer -
2023:03 A novel method for retrospective analysis regarding appropriateness of radiological examinations
SSM perspective Background The use of X-ray diagnostic examinations, especially computed tomography, has increased in recent decades and it is essential that this increase is justified and contribute to ... particular importance for medical exposures because dose limits for this type of exposure are exempt. SSM perspective Background The use of X-ray diagnostic examinations, especially computed tomography, has...
Innehållstyp: Publikationer -
2012:21 Technical Note, Initial Review Phase for SKBs Safety Assessment SR-Site: Corrosion of Copper
models for spontaneous uniform corrosion rates are non-conservative as currently composed and rely on key tenets that create low rates. Either evidence supporting these key tenets and assumptions should ... HS- consumption (perhaps catalyzed by S-2 regeneration and re-adsorption). This assumption of HS- sequestering could be strengthened. J.R. Scully and T.W. Hicks SSM English The uniform and localized corrosion...
Innehållstyp: Publikationer -
2005:04 (SKI 2005:10) Concentrations of Uranium,Thorium and Potassium in Sweden
IAEA co-ordinated research programme (CRP) on the use of selected safety indicators in the assessment of radioactive waste disposal. The CRP was focusing on the assessment of the longterm safety of radioactive ... indicators based on data from natural systems with emphasis on description of existing data on radioactive elements and radionuclides. A major part of the work was focused on collecting data on geophysics as...
Innehållstyp: Publikationer -
2012:11 Issues in the corrosion of copper in a Swedish high level nuclear waste repository
knowledge in the area of copper corrosion in the planned repository environment and obtain information on how copper corrosion evolves during the assessment period of 100 000 years. The equilibrium chemical ... as a function of temperature has been calculated by use of a thermodynamics code called GEMS. Based on the results, the following sulphide species (S2-, HS-, H2S, HS22-, and S22-) are predicted to be present...
Innehållstyp: Publikationer -
2017:11 Extended Common Load Model: A tool for dependent failure modelling in highly redundant structures
Common Load Model (CLM), originally defined in the 70’ies, differs from other CCF models, as it relies on a specific physical analogy. The model was extended in late 80’ies with specific aims to model highly ... before. However, it has been developed with certain funding via the Nordic PSA group (NPSAG) including SSM. It has therefore been an interest to have the method properly documented and published. The objective...
Innehållstyp: Publikationer -
2020:16 Estimates ofJ-integral and COD for circumferential through wall cracks under global bending including the effect of pipe end restraint
SSM perspective Background Leak-before-break (LBB) piping assessments have shown that piping systems can withstand long through-wall cracks before pipe rupture is expected. This is somewhat because pipe ... investigate what impacts the assumption degree of restraint at the ends of an analysed piping segment have on leak-before-break assessments and leakage rate calculations. Results The study conclude that crack...
Innehållstyp: Publikationer -
2016:27 Validation of fatigue fracture mechanics approaches
Background In a previous study (SSM research report 2015:38) fatigue experiments were performed on welded austenitic stainless steel piping components. The fatigue experiments offer an opportunity to evaluate ... evaluate fatigue flaw tolerance assessments used in industry, which are based on the fracture mechanical approach implemented in ProSACC. Objective The present study aims to validate the used fatigue flaw...
Innehållstyp: Publikationer