Publications

Showing 594

• 2011:16 Modelling of ultrasonic testing of cracks in cladding

  ultrasonic technique. Such a model is important in many ways, for example to supplement and plan experimental studies and to perform parametric studies in qualification situation. Modeling can be a useful tool ... been added to the model UTDefect and in this step propagation of ultrasound and signal responses from defect in the cladding of austenitic steel are studied. Pipes and components in nuclear power plants...

  Content type: Publications

• 2011:13 Investigation of Discrete-Fracture Network Conceptual Model Uncertainty at Forsmark

  alternative assumptions regarding conceptual and parametric uncertainty in the spatial and structural relationships among fractures indicates elevated flow rates and groundwater velocities to deposition holes ... Simulated sampling of fractures in boreholes does not indicate any reason to exclude the proposed spatial and structural relationships among fractures. The number of deposition holes that need to be discarded...

  Content type: Publications

• 2011:12 Analysis of Barrier Performance: Modelling of Copper corrosion scenarios with and without buffer erosion

  erosion and removal of buffer mass. Due to the complexity of this task, such a model cannot be realistic in all respects, but the present effort should address the feasibility of solving numerical and computational ... results may also be used to preliminarily assess the performance implications of various assumptions and experimental data. This report contains a range of modelling results from calculation cases corresponding...

  Content type: Publications

• 2011:11 Handling Interfaces and Time-varying Properties in Radionuclide Transport Models

  √10 should be considered. A spalling zone that increases the area of contact between flowing water and the buffer has the potential to increase the release significantly. Quintessa’s AMBER software has ... single and multiple glacial episodes the time-dependency of model parameters did not result in much change to the calculated peak fluxes to the biosphere. These conclusions are preliminary and could be...

  Content type: Publications

• 2011:09 Is Copper Immune to Corrosion When in Contact With Water and Aqueous Solutions?

  copper canisters surrounded by clay and finally placed approximately 500 m down from surface into granitic bedrock, in order to isolate the spent nuclear fuel from humans and environment for very long time ... in this respect the barriers are the copper canister, clay material and finally the granitic bedrock. All barriers will work alone and together in order to retard the spent nuclear fuel to enter into the...

  Content type: Publications

• 2011:08 Workshop on Copper Corrosion and Buffer Erosion Stockholm 15-17 September 2010

  Barrier System (EBS) the manufacturing, testing and QA of the EBS the performance confirmation for the EBS, long-term stability of the buffer and the backfill and Engineered Barrier System -Assessment of the ... issues and issues of coupled processes of buffer erosion and copper corrosion, important for the long-term evolution of the Engineered Barrier System of a deep geological repository. Peter Robinson and Adrian...

  Content type: Publications

• 2011:07 Workshop on Regulatory Review and Safety Assessment Issues in Repository Licensing

  plans for the review of the Swedish Nuclear Fuel and Waste Management Co’s (SKB) planned license application for a spent nuclear fuel repository in Forsmark and an encapsulation plant in Oskarshamn. In support ... earthquakes, properties of the spent fuel and on copper corrosion and buffer erosion. The workshop reported here addresses general safety assessment issues and review strategy. Roger D. Wilmot SSM English...

  Content type: Publications

• 2011:06 Reliability Data Handbook for Piping Components in Nordic Nuclear Power Plants – R Book, Phase 2

  reliability parameters that account for the Nordic and worldwide service experience with safety-related and non-safety-related piping systems in a consistent and realistic manner. The report aims to demonstrate ... database work. This research project started in 1994 and the very first goals was to investigate possibilities for deriving pipe failure rates and rupture probabilities from service experience with piping...

  Content type: Publications

• 2011:05 Overview and Evaluation of the NESC Projects for Fracture Assessments of Nuclear Components

  The Network for Evaluation of Structural Components (NESC) was started in 1993 and since then six different projects have been carried out. A seventh NESC-project is still in progress. The overall objective ... (JRC) in Petten, Netherlands, and involves a large number of participants from different countries, including Sweden. The main purpose of this Swedish study was to identify and compile all the NESC-results...

  Content type: Publications

• 2011:04 Evaluation of the Technical Basis for New Proposals of Fatigue Design of Nuclear Components

  quite old and has now been evaluated against modern data leading to the proposal of modified design curves. Also the effect of the environment has been the subject of intense study in USA, Japan and elsewhere ... leading to the proposal of entirely new calculation procedures. The background for the new design curves and the environmental effect procedures are evaluated in this report. The principal objective of the project...

  Content type: Publications