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Din avgränsning ger 80 träffar.

• 2007:05 Development of an Input Model to MELCOR 1.8.5 for Oskarshamn 3 BWR

  An input model has been prepared for the Oskarshamn 3 rector. Demonstrations calculations, at current nominal operating conditions in Oskarshamn 3 for 3300 MW thermal power, were performed ... nominal operating conditions in Oskarshamn 3 for 3300 MW thermal power, were performed for three cases: (1) initial, steady-state conditions, (2) total loss of AC power and (3) large steam line LOCA. The results...

  Innehållstyp: Publikationer

• 2017:23 Kalibrering för bestämning av optimal beräkningsmodell

  ensembler. Medan metod 1 baseras på etablerad s.k. maximum likelihood-teknik föreslår metod 2 ett helt nytt koncept som också baseras på en annan tolkning av rapporterad osäkerhet. Metod 1 kräver fullständig ... information. Tveksamma antaganden som krävs för metod 1 kan ofta helt undvikas med metod 2. Modellosäkerheten blir betydligt högre för metod 2 än för metod 1, som i regel blir alldeles för låg. De två kalibreringsmetoderna...

  Innehållstyp: Publikationer

• 2013:19 Eighth report from SSM:s Scientific Council on Electromagnetic Fields

  The Swedish Radiation Safety Authority`s (SSM) scientific council monitors the current research situation and gives the authority advice on the assessment of risks, authorization and optimization ... overview and provides an important base for risk assessment. In this report covering both 2011 and 2012 an update on key issues is included such as extremely low frequency (ELF) magnetic fields and childhood...

  Innehållstyp: Publikationer

• 1993:11 Methods for determination of strontium -90 in food and environmental samples by Cerenkov counting

  dryness and ashed. Environmental and food samples are oven dried and ashed. The ash is dissolved in 1 molar hydrochloric acid and, at pH 1.0-1.2 the yttrium-90 is extracted from the solution with 10% HDEHP ... into 3 molar nitric acid and precipitated as hydroxide. The hydroxide precipitation is dissolved in 1 ml conc nitric acid, transferred to a liquid scintillation vial and the Cerenkov radiation from yttrium-90...

  Innehållstyp: Publikationer

• 2022:11 Kingdom of Sweden IRRS ARM Summary Report 2022

  The IAEA Integrated Regulatory Review Service Mission to Sweden in November 2022 ... first IRRS peer review in Sweden, after the Nuclear Safety Directive came into force, was conducted in 2012 with a follow-up mission in 2016. A preparatory meeting was held with IRRS mission representatives...

  Innehållstyp: Publikationer

• 2008:33 Risk-informed assessment of defence in depth, LOCA example

  The methods that are used today in PSA are applicable for evaluating defence-in-depth levels 1 and 2. Failure data can be determined through: human reliability analysis, riskinformed in-service-inspection...

  Innehållstyp: Publikationer

• 2019:26 Analysis of trends in brain tumour incidence in Sweden

  phone use) has had a material impact on the risk of development of brain tumours between 1980 and 2012. Relevance The present report provides support for the previous assessment made by the Swedish Radiation ... research As this study has only had access to a somewhat complete body of data up to and including 2012, it is strongly recommended to carry out an update. It would be appropriate to launch this kind of...

  Innehållstyp: Publikationer

• 2015:11 Investigation of the Distribution of Phosphorus in Copper

  Two copper alloys containing different amounts of phosphorus, 6 and 80 wtppm, respectively, have been investigated. The matrix of both alloys was analysed using atom probe tomography ... concentration should be below about 0.1 at%, or alternatively that the grain boundary coverage is smaller than 1/10th of a monolayer. The results in this study suggest that the mechanism by which P suppresses creep...

  Innehållstyp: Publikationer

• 2022:17 Spricktillväxtmätning i tryckkärlsstål med mellanhög svavelhalt och kloridtransienter

  spännings­korrosion redan vid 3 ppb klorid, vilket föranlett sänkning av EPRIs BWR water chemistry guideline level 1 från 5 till 3 ppb klorid. Driftserfarenheterna från reaktordrift indikerar dock inte någon sådan tydlig ... MPa√m). Resultat Materialet som användes vid provningen var ett tryckkärlsstål av typ ASTM 533 Gr. B Cl. 1 med 0,011 % Svavel, en för svenska förhållanden konservativt hög svavelhalt. Provningen genomfördes...

  Innehållstyp: Publikationer

• 2022:10 Internal dosimetry of radionuclides that can be released during an accident at the European Spallation Source (ESS)

  CEDs around 1 mSv1 and above. Furthermore, the results showed that the levels of radionuclide excretion in urine are low for most radionuclides and will not be quantitative for CEDs around 1 mSv. In addition ... The WBC systems are essential for evaluating lung burden and CED evaluations at moderate exposures (1 mSv). The urine analysis has a limited value at moderate exposures and can complement lung burden measurements...

  Innehållstyp: Publikationer