Publications

Showing 594

• 2009:09 Analysis of three sets of SWIW tracer test data using a two-population complex fracture model for matrix diffusion and sorption

  the non-sorbing tracer uranine, both the finite and the semi-infinite populations play a distinct role in controlling BTC. For the sorbing tracers Cs and Rb the finite population does not saturate, but ... for a model containing only a semi-infinite rock matrix. The ability to match BTC for both sorbing and non-sorbing tracers for these three different SWIW data sets demonstrates that the two-population complex...

  Content type: Publications

• 2009:08 Shear-induced Fracture Slip and Permeability Change - Implications for Long-term Performance of a Deep Geological Repository

  generates heat and later cools the fluid-carrying ability of the rocks becomes a dynamic variable during the lifespan of the repository. Heating causes expansion of the rock close to the repository and, at the ... takes place. Heating and cooling together with the virgin stress can induce shear dilation of fractures and deformation zones and change the flow field around the repository. Ki-Bok Min and Ove Stephansson...

  Content type: Publications

• 2009:07 Dependency Analysis Guidance Nordic/German Working Group on Common Cause Failure analysis

  SSMFS 2008:1, the safety analyses shall be based on a systematic identification and evaluation of such events, event sequences and other conditions which may lead to a radiological accident. The research report ... Development of Harmonized Approach and Applications for Common Cause Failure Quantification” has been developed under a contract with the Nordic PSA Group (NPSAG) and its German counterpart VGB, with the...

  Content type: Publications

• 2009:05 Survey on requirements for independent reviews and inspections of electrical and I&C equipment

  independent review and inspection in the process supporting implementation of electrical equipment in nuclear power plants. The report consists of a summary of different regulations in the area and also an analysis ... analysis of the differences between the electrical and mechanical field especially in the area of independent review. SSM will use the results from the survey to develop the system of independent review...

  Content type: Publications

• 2009:04 Radon in DWELLINGS in the Republic of Kalmykia. Results from the National Radon Survey 2006-2007

  Radiation Protection Authority (SSI) and the Russian Institute of Radiation Hygiene (RIRH). This work was financed by the Russian Institute of Radiation Hygiene and the Swedish Agency for Development Cooperation ... 2006 SSI, RIRH, federal and local authorities carried out a field study in Kalmykia when radon daughter measurements (equilibrium equivalent radon concentrations in the air) and gamma radiation measurements...

  Content type: Publications

• 2009:03 National Survey on Justification of CT-examinations in Sweden

  study was designed and conducted by a project group lead by ass. prof. Håkan Jorulf. The authors of this report have derived the results and conclusions on the basis of the data and are responsible for ... degree of justification varied strongly with organ examined, moderately with prescriber affiliation and weakly with geographical region. If unjustified examinations could be avoided a large dose reduction...

  Content type: Publications

• 2009:02 Screening calculations for radioactive waste releases from non-nuclear facilities

  practices. Solid waste, as well as liquids that are not poured to the sewer, are incinerated and ashes from incineration and sludge from waste water treatment plants are disposed or reused at municipal disposal ... Airborne discharges refer to releases from an incineration facility and liquid discharges refer both to releases from hospitals and laboratories to the sewage system, as well as leakage from waste disposal...

  Content type: Publications

• 2009:01 Decommissioning of the Nuclear Reactors R2 and R2-0 at Studsvik, Sweden – General Data as called for under Article 37 of the Euratom Treaty

  nuclear research and material test reactors R2 and R2-0, situated at the Studsvik site in Sweden. The purpose of the document is to serve as information for the European Commission, and to fulfil the requirements ... nuclear research and material test reactors R2 and R2-0, situated at the Studsvik site in Sweden. The purpose of the document is to serve as information for the European Commission, and to fulfil the requirements...

  Content type: Publications

• SSM Report 2008:01 A combined deterministic and probabilistic procedure for safety assessment of components with cracks – Handbook

  assessment of detected cracks and tolerance for defect analysis. During the operative use of the handbook it was identified needs to update the deterministic part of the procedure and to introduce a new probabilistic ... procedure and to introduce a new probabilistic flaw evaluation procedure. Other objectives of the project have been to validate the conservatism of the procedure, make the procedure well defined and easy to...

  Content type: Publications

• 2008:47 Selected Models for Key Processes in a Nuclear Waste Repository

  the primary purpose of surrounding and protecting the canister. The bentonite buffer is expected to prevent or minimise the water exchange with the surrounding rock and protect the canister against mechanical ... at Chalmers University of Technology have studied the buffer, with special emphasis on the drying and saturation phases of the buffer evolution. As a complement to the detailed numerical models for coupled...

  Content type: Publications