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2012:56 Technical Note, Biosphere Dose Assessment: Review of Dose Consequence of Radionuclides in the Uranium-238 Series Decay Chain
part of the Swedish Radiation Safety Authority (SSM) initial phase review of the Swedish Nuclear Fuel and Waste Management Company (SKB) SR-Site safety assessment for a spent nuclear fuel repository in Sweden ... over long time periods. Uranium is present in both nature and spent nuclear fuel. Radioactive decay creates elements with differing chemical and radiological properties. CNWRA evaluated whether the SKB...
Content type: Publications -
2012:55 Technical Note, Review of SKB’s Radionuclide Transport Methodology
(features, events, processes), as well as site information and other data, into assessment models for radionuclide transport is appropriate and sufficient for its purpose. This Technical Note summarises ... findings of Quintessa’s review. The reviewers consider that SKB’s methodology appears to be appropriate and sufficient but there is scope for improvements to be made in the clarity of its documentation. Information...
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2012:54 Technical Note, Initial Review Phase for SKB´s safety assessment SR-Site: Geological structures and deformation zones, from site investigation to safety assessment
The site selected by the Swedish Nuclear Fuel and Management Co (SKB) for location of a deep geological repository, i.e. a storage for spent nuclear fuel at about 500 m depth in Precambrian metamorphosed ... metamorphosed rocks. The location of the site is Forsmark at the northern coast of Uppland and 122 km north of Stockholm. In geological terms Forsmark is located in the central part of the Fennoscandian Shield.
Content type: Publications -
2012:53 Technical Note, Review of Engineering Geology and Rock Engineering aspects of the operation and closure of a KBS-3 repository at the Forsmark site – Initial Review Phase
SRK Consulting (UK) Limited (SRK) has reviewed the Engineering Geology and Rock Engineering aspects of the operation and closure of a KBS-3 repository at the Forsmark site in Sweden. The review assignment ... (SRK). In general SRK is satisfied with the efforts of SKB in dealing with the engineering geology and rock engineering aspects of the repository. There are some aspects, such as, the response of the rock...
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2012:52 Technical Note, Shear movement of near-field rock due to large earthquakes
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 ... the repository. The reports mostly include the relevant references and data. The conclusions drawn from the incorporated data is sound and consistent. The analysis clearly shows that an earthquake, which...
Content type: Publications -
2012:51 Technical Note, Rock Mechanics related to long-term repository and site evolution
hydraulic, mechanical and thermal data that is essential for constructing a deep geological repository. The method of data acquisition is robust using the internationally- recognized and suggested methods ... state-of-the-art technology and expertise which results in high quality of produced reports. Conclusions drawn in the reports are closely linked with various individual geological and mechanical processes, which...
Content type: Publications -
2012:50 Fatigue Margins for Austenitic Stainless Steels in ASME Boiler and Pressure Vessel Code – A Literature Study
fatigue failure in nuclear piping systems is essential. Therefore, the margins in the ASME Boiler and Pressure Vessel Code (section III) fatigue design procedure for austenitic steels, type 304/316, as ... previous discussions and analyses by for example ANL are of limited value. The test conditions with small scale smooth specimens deviate too much from the real fatigue situation and the ability to transfer...
Content type: Publications -
2012:49 Hydrogeological characteristics of sites for low- and intermediate-level waste disposal
sites and the Laxemar-Simpevarp area with its two sites are broadly similar in terms of lithology, rock ages, and tectonic histories. The two areas differ in terms of degree of deformation, and tectonic ... tectonic fabric. Some lithologic and tectonic differences are noticeable between the two sites in the Forsmark area and between the two sites in the Laxemar-Simpevarp area. These differences can be expected...
Content type: Publications -
2012:48 Technical Note, Use of Solubility Limits in the SR-Site Safety Assessment
in some potential situations (scenarios) a disposed canister containing spent fuel may be breached and the fuel may come into contact with groundwater. The concentration of a radioactive element such as ... may rise to a level where the solution is saturated. No more of the radioactive element may dissolve and a precipitated solid may be formed. In this situation the radioelement is solubility limited, affecting...
Content type: Publications -
2012:47 C-14 Long-Term Dose Assessment: Data Review, Scenario Development, and Model Comparison
BIOPROTA (www.bioprota.org) is an international collaboration forum which seeks to provide a transparent and traceable basis for the choices of parameter values, as well as for the wider interpretation of information ... is placed on data required for the assessment of long-lived radionuclide migration and accumulation in the biosphere, and the associated radiological impact, following discharge to the environment or release...
Content type: Publications