Filtered generated 761 hits.
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2017:25 Evaluation of weld fatigue reduction in austenitic stainless steel pipe components
Background The performed investigation is a continuation of the work performed in SSM 2015:38 where fatigue tests were performed on pressurized welded austenitic stainless steel piping components. The specimens were subjected to a realistic variable amplitude loading with mainly reversed bending deformation and particular focus on high cycle fatigue. The previous fatigue results were quite...
Content type: Publications -
2017:11 Extended Common Load Model: A tool for dependent failure modelling in highly redundant structures
Background The treatment of dependent failures is one of the most controversial subjects in reliability and risk analyses. The difficulties are specially underlined in the case of highly redundant systems, when the number of redundant components or trains exceeds four. The Common Load Model (CLM), originally defined in the 70’ies, differs from other CCF models, as it relies on a specific...
Content type: Publications -
2022:18 Data report – sampling of sea water and marine organisms outside Ringhals NPP
SSM perspective Background The Radiation Safety Authority (SSM) funded the collection of marine biota over an annual cycle at the Ringhals nuclear power plant (NPP) to enable development of analytical methods for C-14. Methods for the C-14 analysis and results in the form of levels of C-14 in various marine organisms have been reported by the Swedish Defense Research Institute (FOI) in FOI...
Content type: Publications -
2002:08 Mammography – recent technical developments and their clinical potential
Purpose The recent technical developments in digital as well as screenfilm X-ray mammography have been reviewed in order to evaluate their clinical potential and to analyse possible lines for future development. Material and methods The scientific literature has been reviewed, conferences covered and contacts with colleagues developed. Companies in the field have been inquired and invited for...
Content type: Publications -
2002:16 Epidemiologic Studies of Cellular Telephones and Cancer Risk – A Review
Cellular telephones emit and receive radiofrequency (RF) signals between about 450 and 2200 MHz which fall in the microwave region of the electromagnetic spectrum. A RF wave from a cellular telephone contains billions of times less energy than an x-ray and is not capable of inducing ionizations or damaging DNA. The rapid and widespread use of this technology, however, has raised concern over...
Content type: Publications -
2002:17 Review of Project SAFE: Comments on biosphere conceptual model description and risk assessment methodology
The Swedish Nuclear Fuel and Waste Management Company’s (SKB’s) most recent assessment of the safety of the Forsmark repository for low-level and intermediatelevel waste (Project SAFE) is currently undergoing review by the Swedish regulators. As part of its review, the Swedish Radiation Protection Institute (SSI) identified that two components of SAFE require more detailed review: (i) the...
Content type: Publications -
2001:24 Evaluation of the laboratory resources of the Swedish Radiation Protection Institute. The balance between internal and external laboratory capacity
The Swedish Radiation Protection Institute (SSI) has by directive of September 4, 2000 from the Director-General initiated an evaluation of SSI’s future needs for laboratory resources regarding measurements of radiation and radioactivity. The present document is the final report by the external independent evaluation panel, as presented at SSI, 23 August 2001. The evaluation panel has made...
Content type: Publications -
1996:08 Contamination and Radiation Exposure, Evaluation and Measures in the Nordic Countries after the Chernobyl Accident
In the night 25/26 April1986 it all started. The radioactive releases from Chernobyl reached the Nordic countries late 27 April. At noon the following day all the world knew that an accident had occurred - two and a half days after it started. In April.l986 there was, generally speaking, quite a high level of preparedness for nuclear accidents in the Nordic countries but still, as it was...
Content type: Publications -
1995:15 Determination of the Neutron and Photon Dose Equivalent at Work Places in Nuclear Facilities of Sweden
The radiation fields in nuclear power plants consist of a mixture of photons and neutrons of various energies. A detector is usually constructed to respond to one type of radiation only and is usually useful in a limited energy range . .This is especially so for neutrons. Accurate descriptions of the radiation envirorunent are therefore very complicated to obtain. During the last decade great...
Content type: Publications -
2001:21 Work in Support of Biosphere Assessments for Solid Radioactive Waste Disposal. 1. Performance Assessments, Requirements and Methodology; Criteria for Radiological Environmental Protection
The first part of this report is intended to assess how the recent Swedish regulatory developments and resulting criteria impose requirements on what should be included in a performance assessment (PA) for the SFR low and medium level waste repository and for a potential deep repository for high level waste. The second part of the report has been prepared by QuantiSci as an input to the...
Content type: Publications