Filtered generated 18 hits.
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2018:25 UO2 fuel oxidation and fission gas release
abnormal heat up. In this project the oxidation of UO2 is scrutinized and its effect on pellet fragmentation, fission gas release and damage of fuel rods has been investigated. Many phenomena that affect ... affect a fuel rod are described mathematically in analysis tools (computer codes) like FRAPCON and FRAPTRAN, but fuel oxidation is not commonly included in such tools. Current analysis tools usually have an...
Content type: Publications -
2018:23 Evaluation of the Impact of the Model Additional Protocol on Non-Nuclear-Weapon States with Comprehensive Safeguards Agreements
Non-Proliferation. This call resulted in SSM accepting a proposal from the Vienna Center for Disarmament and Non-Proliferation (VCDNP) to evaluate the impact of the implementation of Additional Protocols (AP) ... since been implemented by a growing number of states and the IAEA. By December 2017, there were 127 states where such APs were implemented. SSM, and thereby Sweden, have long been proponents of the AP.
Content type: Publications -
2018:21 Research on Resaturation of Bentonite Buffer
repository for spent nuclear fuel are complicated and are often illustrated, analysed and modelled multi-disciplinarily as coupled thermal (T), hydrological (H) and mechanical (M) processes with multi-phase flow ... of bentonite buffer will not start working until the bentonite buffer becomes fully water saturated and the buffer material becomes homogenised. A slow resaturation process with uneven swelling of the bentonite...
Content type: Publications -
2018:19 Licensing of safety critical software for nuclear reactors
critical software. The members come from regulatory authorities and/or their technical support organization. The report, without the SSM cover and this page, will be published by or available at the websites ... websites of the other participating organizations. Effect on SSM supervisory and regulatory task The effect of the report is high as it presents a common view on important issues by experts from eleven international...
Content type: Publications -
2018:18 Procedure for Safety Assessment of Components with Defects
Background SSM and the Swedish nuclear power plant owners have financed Kiwa Inspecta Technology in Sweden to develop a new version of the handbook for assessment of defects. This represents a major update ... where the failure mechanisms fracture and plastic collapse are considered for cracked components of metallic materials by evaluating the stress intensity factor and the plastic limit load. Almost all elements...
Content type: Publications -
2018:17 Assessment of structures subject to concrete pathologies (ASCET), phase 2
research project together with the next phase are therefore valuable when it comes to ageing management and radiation safety assessments of degraded concrete structures in nuclear facilities. Björn Thunell SSM ... research project together with the next phase are therefore valuable when it comes to ageing management and radiation safety assessments of degraded concrete structures in nuclear facilities.
Content type: Publications -
2018:15 Review of Geochemical Data Utilisation in SR-Site Safety Assessment
Model for Forsmark and as input data for the safety assessment, SRSite. Improving this understanding sheds further light on the significance of data uncertainties, data processing and interpretation on ... processes, and long-term safety assessment. Results The first part of the report (Sections 2 to 4) summarizes the geochemical parameters that need to be measured on groundwater samples and their relevance...
Content type: Publications -
2018:13 Prestudy - Detectors for variance measurements
radiation on which models for cellular and sub-cellular damage can be built. Experimental data is fundamental in this context for quality assurance and bench-marking of models and simulations. Direct measurements ... measurements are also of practical importance for radiation quality determinations in radiation therapy and radiation protection. In the experimental microdosimetric variance-covariance method, the radiation quality...
Content type: Publications -
2018:09 Recent Research on EMF and Health Risk, Twelfth report from SSM's Scientific Council on Electromagnetic Fields, 2017
monitors current research on potential health risks with a correlation to exposure to electromagnetic fields, and provides the Authority with advice on assessing possible health risks. The Council gives guidance ... year on the current research and knowledge situation. Objective The report has the objective of covering the previous year's research in the area of electromagnetic fields (EMF). The report gives the Swedish...
Content type: Publications -
2018:08 Calculated radiological consequences of applying European clearance levels to scrap metal from the decommissioning of Swedish nuclear facilities
Clearance of materials means a decision that such materials can be released from regulatory control and used or disposed of without restrictions from a radiation protection point of view. According to regulations ... regulations issued by the SSM, such decisions must be based on thorough measurements of the activity content and it must be shown that the activity content is below certain values, so called clearance levels. Clearance...
Content type: Publications