Din avgränsning ger 568 träffar.
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2024:06 In search of lost storms: or can one infer the magnitudes of extremely rare flood events from short observational records?
SSM perspektiv Bakgrund Kärnkraftverken, övriga kärntekniska anläggningar och andra verksamheter som acceleratorerna ESS och MAX IV ska kunna motstå yttre händelser, såsom väderfenomen, i sådan omfattning att säkerhetssystemens förmåga att utföra sina uppgifter inte äventyras. Fukushima-olyckan i Japan 2011 är ett exempel...
Innehållstyp: Publikationer -
2024:10 Computational analysis of high-burnup fuel rod behaviour in PWR large-break LOCA
SSM perspective Background Quantum Technologies AB (QT) has for many years developed computational models for the thermomechanical behaviour of nuclear fuel in events such as LOCA and RIA. The research projects have been based on evaluations of tests on nuclear fuel in Halden Reactor Project (HRP) and Studsvik Cladding Integrity Project (SCIP). The models developed by QT enable analyses and...
Innehållstyp: Publikationer -
2025:10 Förutsättningar för säkerhetskultur och ledarskap i ett förändringsskede
SSM perspektiv Bakgrund Den svenska kärnkraftsbranschen står inför en ökad mängd utvecklingsarbete, dels till följd av beslut om långtidsdrift av befntliga anläggningar, dels till följd av en eventuell nybyggnation. Det förnyade intresset för kärnkraft som energikälla i Sverige kan medföra en del utmaningar framöver i hur...
Innehållstyp: Publikationer -
2019:20 Assessment of structures subject to concrete pathologies (ASCET), phase 3
SSM perspective Background ASCET is an international research project initiated by WGIAGE1 OECD2 / NEA3. WGIAGE Concrete subgroup is a working group within the OECD / NEA whose task is to address issues concerning the maintenance of the integrity of concrete structures, proposals for general principles to optimally handle the challenges of integrity, especially with regard to ageing of...
Innehållstyp: Publikationer -
2013:32 Upparbetning av utbränt kärnbränsle - En studie med fokus på exportkontroll
Rapporten beskriver principerna för upparbetning samt egenskaperna hos utbränt kärnbränsle där sammansättningen hos det i reaktorn bildade plutoniumet är av avgörande betydelse för kärnvapenframställning till skillnad från civil upparbetning. Rapporten går igenom ett antal upparbetningsmetoder, både äldre metoder samt nya,...
Innehållstyp: Publikationer -
2016:28 Fatigue fracture surface characterization and investigation
Background In a previous study (SSM research report 2015:38) fatigue experiments were performed on welded austenitic stainless steel piping components. The fatigue experiments offer an opportunity to examine the obtained fatigue cracks with an optical microscope. Objective The present study performs a fractographical examination of the obtained fatigue cracks with the aim of determine where...
Innehållstyp: Publikationer -
2016:26 Ensemble for deterministic sampling with positive weights
The aim of this project is to find a reliable method for determining an ensemble for Deterministic Sampling with only positive weights. This report is intended to work as a presentation of the project, as well as to work as a beginner’s guide to DS. In the report several methods for generating DS ensembles are presented, which can encode up to four moments and represent any kind of...
Innehållstyp: Publikationer -
2015:09 PROSIR - Probabilistic Structural Integrity of a PWR Reactor Pressure Vessel
Following an OCDE round robin proposal, 16 participants from 9 countries (USA, Japan, Korea (6 participants), Sweden, Germany, Czech Republic, Spain, EC and France (3 participants)) have been involved in a round robin study called PROSIR, Probabilistic Structural Integrity of a PWR Reactor Pressure Vessel. The PROSIR project started already in 2003 and a final draft version of the main report...
Innehållstyp: Publikationer -
2014:27 Regulation applying to welding of pressure equipment – a comparative study
The PED was in force in November 1999 and has been mandatory in European Union Member States since May 2002. Most of the standards referred to in the PED are relatively new although some of the standards were adopted in the early 1990s. On the other hand, the ASME B&PV Code has been used for a long time now and is the result of several decades of industrial experiences. The authors present...
Innehållstyp: Publikationer -
2014:01 Cost Estimating for Decommissioning Nuclear Reactors in Sweden
In Sweden, decommissioning cost estimates are core inputs to the process of calculating licensee contributions to the Swedish national fund for radioactive waste management and decommissioning. Under the present system, the decommissioning cost estimates are produced by licensees every three years and formally submitted to the Swedish Radiation Safety Authority (SSM), which reviews the...
Innehållstyp: Publikationer