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Din avgränsning ger 423 träffar.

• 2020:16 Estimates ofJ-integral and COD for circumferential through wall cracks under global bending including the effect of pipe end restraint

  SSM perspective Background Leak-before-break (LBB) piping assessments have shown that piping systems can withstand long through-wall cracks before pipe rupture is expected. This is somewhat because pipe ends are restrained. In LBB assessments analyses are often performed for a pipe segment uncoupled from the piping system, as pipe ends are assumed unrestrained. This assumption is conservative...

  Innehållstyp: Publikationer

• 2023:03 A novel method for retrospective analysis regarding appropriateness of radiological examinations

  SSM perspective Background The use of X-ray diagnostic examinations, especially computed tomography, has increased in recent decades and it is essential that this increase is justified and contribute to a better care of the patients. There are many reasons to refrain from performing inappropriate radiological examinations, including not to expose patients to unnecessary ionising radiation. In...

  Innehållstyp: Publikationer

• 2023:11 Study of degradation of spent fuel’s structural material and core components under long-term wet storage

  SSM perspective Background Sweden is managing the spent nuclear fuel and core components from its commercial nuclear reactors with a national strategic plan. The fuel and core components are initially stored at the reactor site. After an on-site storage period to comply with transportation limits on decay heat and radiation, these materials are shipped to the Clab (Central Interim Storage...

  Innehållstyp: Publikationer

• 2023:14 Effect of gamma-irradiation on the redox states of the structural iron in bentonite clay

  SSM perspective Background Bentonite clay is used as buffer and backfill material which form engineered barrier in the spent fuel repository. The buffer material surrounding the copper canister will be exposed to gamma and neutron radiations, especially during the first few hundred years after closure of the repository. The redox states of the structural iron in montmorillonite, the dominant...

  Innehållstyp: Publikationer

• 2023:06 Instabila matrisdefekter i bestrålat reaktortankstål med höga nickel- och manganhalter

  Strålsäkerhetsmyndighetens perspektiv Bakgrund Reaktortankstål påverkas av neutronbestrålning så att omslagstemperaturen, omslag från sprött till segt brott, ökar och att segheten i det sega området minskar med ökad grad av bestrålning. För att kunna prediktera framtida försprödningsgrader har så kallade trendkurvor...

  Innehållstyp: Publikationer

• 2024:01 Stress field modelling of the Forsmark lens – Correlation of stress measurements with stress field simulations

  SSM perspektiv Bakgrund och syfte Kunskap om det nuvarande bergspänningsfältet i Forsmark ligger till grund för att karakterisera bergmassans rådande mekaniska och hydrauliska beteende. Endast med en god förståelse för den geomekaniska miljön är en analys av bergmassan framtida hydro-mekaniska beteende möjlig. Baserat på befintliga bergspänningsmätningar...

  Innehållstyp: Publikationer

• 2014:26 Improved reference and relative dosimetry of small radiation therapy photon beams

  Data tables on detector corrections for beam output measurements are provided for a large number of detectors (small air and liquid ionization chambers, silicon diodes, TLD and alanine) manufactured by major vendors, for 6 MV photons from clinical accelerators and for two Leksell Gamma Knife® models. They have been calculated with the PENELOPE Monte Carlo system at an uncertainty of 0.1%.

  Innehållstyp: Publikationer

• 2014:25 En standardiserad svensk nomenklatur för strålbehandling

  Arbetet med att ta fram en standardiserad svensk nomenklatur för strålbehandling har i huvudsak utförts av en referensgrupp som har varit knuten till forskningsuppdraget. Referensgruppen har bestått av läkare och sjukhusfysiker från landets universitetssjukhus. Den framtagna standarden har harmoniserats med publicerade internationella standarder. I den här rapporten...

  Innehållstyp: Publikationer

• 2009:36 Recent Research on EMF and Health Risks. Sixth annual report from SSM:s independent Expert Group on Electromagnetic Fields 2009

  A large number of cell studies are done on both genotoxic and non-genotoxic outcomes, such as apoptosis gene expression. There are no new positive findings from cellular studies that have been well established in terms of experimental quality and replication. Potential heating of the samples is still seen as a major source of artefacts. Moreover, these few positive results are not related to...

  Innehållstyp: Publikationer

• 2009:14 Review of Legislation and Regulatory Framework in Ukraine with Regard to Environmental Radiation Monitoring

  This report was written in the frames of the development cooperation project in Ukraine entitled “Environmental Radiation Monitoring”. This report concerns a study which has been conducted for the Swedish Radiation Safety Authority, SSM. The conclusions and viewpoints presented in the report are those of the author/authors and do not necessarily coincide with those of the SSM. In 2006, the...

  Innehållstyp: Publikationer