Sök

Din avgränsning ger 336 träffar.

• 1990:5 Granskning av SKBs FoU-Program 89

  SKI:s granskning av FoU-program 89 har resulterat i en granskningspromemoria (SKI Teknisk Rapport 90:5) där SKIs samlade synpunkter redovisas. Här återges en sammanfattning av dessa synpunkter inom olika delområden. SKI vill på grundval av erfarenheterna från den genomförda granskningen framföra vissa synpunkter på presentationen av programmet som kan...

  Innehållstyp: Publikationer

• 2016:38 Kartläggning av värdefull natur kring Sveriges kärntekniska anläggningar

  Bakgrund Strålsäkerhetsmyndighetens (SSM:s) uppgift är att skydda människa och miljö mot skadlig radioaktivitet. Området skydd av miljö med avseende på radioaktivitet är under utveckling nationellt och internationell och inga tydliga metoder eller regelverk finns idag fastställda. SSM:s ambition är att utveckla ett ändamålsenligt...

  Innehållstyp: Publikationer

• 2020:13 Core data Research at Uppsala University

  SSM perspective Background This project is to support a research group at Uppsala University in the research field of nuclear data for applications. Nuclear data research is about measuring microscopic cross-sections and developing theoretical nuclear models to create evaluated nuclear data libraries. These nuclear data libraries are used in different applications such as, nuclear technology,...

  Innehållstyp: Publikationer

• 2020:02 Models for axial gas flow and mixing in LWR fuel rods

  SSM perspective Background Fission gases inside a fuel rod plays an important role in the behaviour of the fuel, both during normal operation and during events and accidents. Fission gases are released from inside the fuel pellets to the gap between the pellet and the cladding tube and then flow to the plenum volume at the top of the fuel rod. In high burnup fuel, this axial flow to the...

  Innehållstyp: Publikationer

• 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

• 2017:34 Human capability to cope with unexpected events

  Background In the light of the Fukushima accident, it stood clear that the challenge of the unexpected is of great importance to both regulators and licensees. For SSM, as for many other national regulators, there was a selfevident need to learn more about the capabilities and actions of people when the unexpected arises and conditions are potentially extreme. A task group was set up within...

  Innehållstyp: Publikationer

• 1995:19 Non-destructive Assay of Spent BWR Fuel with High-resolution Gamma-ray Spectroscopy

  A method, based on high-resolution gamma-ray spectroscopy, has been developed for verification of burnup, cooling time, power history and, to some extent, the initial enrichment of spent BWR fuel. It is shown that, provided that the power history is known and corrected for, bumup and cooling time can be verified with accuracies within 3% and 60 days, respectively, for cooling times up to about...

  Innehållstyp: Publikationer

• 2010:22 Research and Development Program in Reactor Diagnostics and Monitoring with Neutron Noise Methods, Stage 16

  This report constitutes Stage 16 of a long-term research and development program concerning the development of diagnostics and monitoring methods for nuclear reactors. Results up to Stage 15 were reported in SKI and SSM reports, as listed below and in the Summary. The results have also been published in international journals and have been included in both licentiate- and doctor’s degrees.

  Innehållstyp: Publikationer

• 2010:45 Evaluation of models for cyclic plastic deformation – A literature study

  Analysis of nuclear components subjected to cyclic plastic deformation is normally based on the American standard ASME III. With the focus to improve the modeling of the stress-strain response under non-monotonic loading, several models for the analysis of cyclic plastic deformation have been developed in recent years. However, experience shows that the analysis and evaluation of plastic...

  Innehållstyp: Publikationer

• 2010:37 Utvärdering av regler och normer för betongkonstruktioner i svenska kärnkraftsanläggningar

  Syftet med projektet var att ta fram rekommendationer för tillämpning av regelverk för betongkonstruktioner i svenska kärnkraftsanläggningar genom att jämföra och utvärdera dels relevanta krav utgivna av europeiska och nordamerikanska myndigheter, och dels relevanta normer och standarder, riktlinjer eller liknande för betongkonstruktioner. Baserat på...

  Innehållstyp: Publikationer