Din avgränsning ger 332 träffar.
-
2024:17 Atomistic studies on the adsorption and desorption of radionuclides on fuel crud and system surfaces in Light Water Reactors
SSM perspective Background Radiation safety is of particular concern during power plant maintenance. Radionuclides produced by the neutron bombardment in the core during operation may accumulate on system surfaces such as the filter system or piping and contribute to the radiation field. Some ions that are prone to neutron capture often become trapped in the deposits on the fuel cladding...
Innehållstyp: Publikationer -
Ny kärnkraft står på agendan under IAEA:s generalkonferens
Hur myndigheter hanterar ansökningar om ny kärnkraft, att samordna stödet till Ukraina och slutförvar av använt kärnbränsle. Det är några av frågorna som kommer att diskuteras på IAEA:s stora generalkonferens i Wien som hålls i veckan...
Innehållstyp: Nyheter -
Förbättrad kunskap om härdsmältor stärker strålsäkerheten på sikt
För att bibehålla och utveckla den höga strålsäkerheten vid de svenska kärnkraftverken bedrivs sedan början av 1990-talet forskning inom svåra haverier. Den senaste rapporten från svenska APRI-projektet (Accident Phenoma of Risk Importance) visar flera framsteg för att förstå processerna bättre. En lärdom från ett verkligt...
Innehållstyp: Nyheter -
Poddavsnitt 22: Sievert och pionjärerna – Strålsäkerhetens historia del 1.
Samma år som Henri Becquerel upptäckte radioaktiviteten, 1896, föddes en person som skulle få stor betydelse för strålskyddet och radiofysiken i Sverige och internationellt, Rolf Maximilian Sievert.
Innehållstyp: Artiklar -
2013:07 Corrosion of copper in distilled water without molecular oxygen and the detection of produced hydrogen
In this report, results are presented for copper which has been exposed to pure anoxic water in the temperature interval of 21 °C to 55 °C up to a total of 19 000 hours. Characterisations of copper surfaces after exposure have been performed ex-situ, meaning after termination of the experiment and exposing the specimen to normal atmospheric environment. Ideally characterisation of surfaces...
Innehållstyp: Publikationer -
2020:12 Assessment of the QT-COOL coolant channel module against the PBF RIA 1-2 experiment
SSM perspective Background The fuel rod analysis program SCANAIR has been developed by IRSN (Institut de Radioprotection et de Sûreté Nucléaire) for analysis of reactivity initiated accidents (RIA) in light water reactors. The Swedish Radiation Safety Authority (SSM) has access to SCANAIR in exchange for annual contributions for its further development. This ensures a possibility...
Innehållstyp: Publikationer -
2010:40 Rock-block characterization on regional to local scales for two SKB sites in Forsmark – Uppland and Laxemar – eastern Småland, south-eastern Sweden
To get an overall impression of the general structural setting of a landscape, a remote study of bedrock structures should include studies of the geomorphology at various scales. Thematic maps improve the general understanding of an area. Digital elevation data in 500m, 50m and 10m grids were used for rock-block interpretations at regional, semi-regional and local scales of areas around the...
Innehållstyp: Publikationer -
2010:38 The feasibility of Backfilling a Repository of Spent Fuel: An Assessment of Recent Developments by SKB
In the Review Statement and Evaluation of SKB’s RD & D programme 2007 (SKI Report 2008:48E), the former Swedish Nuclear Power Inspectorate (SKI) commented that considerable work remained to be done for knowledge of both practical management issues on backfilling and analysis of long-term backfill evolution to reach the same level as for the canister and the buffer. SKI considered that the...
Innehållstyp: Publikationer -
2010:34 The understanding of the formation of valleys and its implication on site characterization: Moredalen and Pukedalen, south-eastern Sweden
This report concerns a study which was initially conducted for the Swedish Nuclear Power Inspectorate (SKI), which is now merged into the Swedish Radiation Safety Authority (SSM). The conclusions and viewpoints presented in the report are those of the authors and do not necessarily coincide with those of the SSM. In south-eastern Sweden, there are a number of over-deepened narrow valleys,...
Innehållstyp: Publikationer -
2011:11 Handling Interfaces and Time-varying Properties in Radionuclide Transport Models
Quintessa’s QPAC code has been used to investigate the Qeq approach. The conclusions from this simulation study are the following. The basic approach to calculating Qeq values is sound, however, narrow channels could lead to the same release as larger fractures with the same pore velocity, so a channel enhancement factor of √10 should be considered. A spalling zone that increases the area of...
Innehållstyp: Publikationer