Filtered generated 23 hits.
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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 ... order to estimate dissolved-species fluxes from the far-field environment to the canister surface and from a canister breach to the far field. To accomplish the review assignment, we (i) reviewed relevant...
Content type: Publications -
2013:34 Technical Note, Seismology – Post-glacial seismicity and paleoseismology at Forsmark
Metoden som SKB använder för att förutse seismisk risk för slutförvaret skiljer sig i två avseenden från gängse förfarande. För det första, förkastningsrörelser inom förvaret är beräknade utifrån numeriska bergmekaniska modeller i stället för genom en Probabilistisk riskanalys för förkastningsrörelse...
Content type: Publications -
2013:35 Technical Note, Rock Mechanics – Confidence of SKB’s models for predicting the occurrence of a damage zone around the excavations – Main Review Phase
alternative models and codes to assess potential EDZ configurations and spatial persistence. The independent calculations consider the effects of stress change due to excavation, thermal and glacial loadings ... buffer swelling and groundwater pressure. SKB assessed potential EDZ occurrence due to construction and the stress effects of excavation, thermal loading, glacially induced loading and pore pressure. Based...
Content type: Publications -
2013:33 Technical Note, Seismology – Frequencies and mechanisms. -Initial review phase
applications under the Act on Nuclear Activities (SFS 1984:3) for the construction and operation of a repository for spent nuclear fuel and for an encapsulation facility. As part of the review, SSM commissions consultants ... that concern mechanisms for occurrence of earthquakes including determination of input parameters and earthquake frequency are considered. The assignment includes the assessment of the robustness of the...
Content type: Publications -
2013:31 Aesthetic ultrasound devices – current state of knowledge and suggested measurement set-up for characterization of exposure
This report concerns the ultrasound devices used for the aesthetic purposes of body contouring and fat reduction (ablation of adipose tissue). Such devices have recently become more frequent on the Swedish ... regulated in Sweden and little is known about their safety and potentially harmful exposure when using them. This report aims to provide relevant information about present guidelines and scientific results...
Content type: Publications -
2013:30 Laser pointers and Eye injuries - An analysis of reported cases
is related to the impairment of the vision. This type of relationship between an imaginary exposure and a subsequent disability is very useful in the risk assessments that are made in the authority’s supervision ... The purpose of this study was to investigate what dose of laser radiation, in terms of intensity and exposure time, may be associated with eye damages. The study has been limited to unwanted exposures...
Content type: Publications -
2013:29 Regulatory Approaches in Nuclear Power Supervision
understanding regulatory approaches and how they can be combined as part of effective strategies. The survey was intended to assist SSM in identifying current standards, experiences, and practices in the regulation ... stressed that regulatory supervision is a dynamic process and that the approaches being examined in this survey were important tools, used iteratively and in combination to address complex cases. The effectiveness...
Content type: Publications -
2013:28 Brine intrusion by upconing for a high-level nuclear waste repository at Forsmark. Scoping calculations
proposed to be located at Forsmark, Sweden. The repository is to be situated at 500 m depth in the rock and copper canisters are deposited in holes excavated from the tunnel system. To protect the canisters ... getting in contact with water. The swelling properties are dependent on the salt content of the water and excessively high salt contents may inhibit the swelling. Thus it is important to ensure that the bentonite...
Content type: Publications -
2013:27 Numerical simulations of headed anchors break in reinforced and non-reinforced concrete structures
since the time the Swedish power plants were designed. Furthermore, the design basis has been updated and in some cases new mechanical loads have been added. As a consequence, it can be difficult for some ... simulations. Both single anchors and anchor groups are studied for tension and shear loads. Peter Segle, Jessica Strömbro, Alexander Wulff, Johan Kölfors, Albin Larsson and Robert Persson SSM English The...
Content type: Publications -
2013:24 Modelling of nuclear fuel cladding under loss-of-coolant accident conditions
solid-to-solid phase transformation kinetics, cladding creep deformation, oxidation and rupture as a function of temperature and time in an integrated fashion during the transient. The fuel cladding material ... data(model parameters) are taken from literature. We have modelled and simulated single-rod transient burst tests in which the rod internal pressure and the heating rate were kept constant during each test. The...
Content type: Publications