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Din avgränsning ger 21 träffar.

• 2013:04 Research and Development Program in Reactor Diagnostics and Monitoring with Neutron Noise Methods, Stage 18

  executed in Stage 18 consists of the following three parts: Application of CoreSim with a two-dimensional model of vibrating fuel assemblies, for the calculation of ex-core detector noise throughout a fuel ... investigation of the neutron noise, induced by propagating perturbations, in various thermal and fast reactor systems, in two-group theory; A consistent derivation of the point kinetic term of the noise in circulating...

  Innehållstyp: Publikationer

• 2013:01 Validation of Weld Residual Stress Modeling in the NRC International Round Robin Study

  Weld residual stresses (WRS) have a large influence on the behavior of cracks growing under normal operation loads and on the leakage flow from a through-wall crack. Accurate prediction on weld residual ... when cracks in weld joints are detected. During the latest years, there has been a strong development in both analytical procedures to numerically determine WRS and experimental measurements of WRS. The USNRC...

  Innehållstyp: Publikationer

• 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 ... been performed ex-situ, meaning after termination of the experiment and exposing the specimen to normal atmospheric environment. Ideally characterisation of surfaces should have been performed with the...

  Innehållstyp: Publikationer

• 2013:36 Technical Note, Review and assessment of aspects of the Qeq concept – Main Review Phase

  transport of dissolved constituents in the near field at the Forsmark site, in particular the Qeq abstraction for diffusive transport.  SKB uses the Qeq parameter to scale concentration gradients in order ... order to estimate dissolved-species fluxes from the far-field environment to the canister surface and from a canister breach to the far field.  To accomplish the review assignment, we (i) reviewed relevant...

  Innehållstyp: Publikationer

• 2013:08 Licensing of safety critical software for nuclear reactors

  – Common position of seven European nuclear regulators and authorised technical support organisations...

  Innehållstyp: Publikationer

• 2013:35 Technical Note, Rock Mechanics – Confidence of SKB’s models for predicting the occurrence of a damage zone around the excavations – Main Review Phase

  This assignment, performed at Southwest Research Institute, focusses on evaluating SKB’s assessment of potential occurrence of damaged rock zones (also referred to as excavation-damaged zone or EDZ) around ... around underground excavations at the site. This report presents the authors’ evaluation of SKB’s assessment in the specific area based on questions raised by SSM. The evaluation includes independent calculations...

  Innehållstyp: Publikationer

• 2013:09 An Application of the Functional Resonance Analysis Method (FRAM) to Risk Assessment of Organisational Change

  The objective of this study was to demonstrate an alternative approach to risk assessment of organisational changes, based on the principles of resilience engineering. The approach in question was the ... (FRAM). Whereas established approaches focus on risks coming from failure or malfunctioning of components, alone or in combination, resilience engineering focuses on the common functions and processes that...

  Innehållstyp: Publikationer

• 2013:06 The sixth round of implementation according to PARCOM recommendation 91/4 – Report from Sweden

  contracting parties shall, in accordance with the guidelines annexed to this recommendation, every four years present a statement on progress made in applying best available technology (BAT) in order to minimise ... reprocessing plants, into the marine environment. This is the sixth round of implementation according to the PARCOM recommendation. Sweden has reported compliance with PARCOM Recommendation 91/4 during all...

  Innehållstyp: Publikationer

• 2013:33 Technical Note, Seismology – Frequencies and mechanisms. -Initial review phase

  construction and operation of a repository for spent nuclear fuel and for an encapsulation facility. As part of the review, SSM commissions consultants to carry out work in order to obtain information ... results from the consultants’ tasks are reported in SSM’s Technical Note series. This assignment is part of the review regarding the long-term evolution of the rock surrounding the repository. This assignment...

  Innehållstyp: Publikationer

• 2013:10 Qualification of Electrical Equipment in Nuclear Power Plants - Management of ageing

  The purpose of this report is to describe programs and tools for assessment of accomplished and documented qualification with respect to ageing of electrical equipment and for development of complimentary ... ageing management programs. In addition to description of complete programs for management of ageing, tools for validation of the status with regard to ageing of installed (“old”) equipment and, where...

  Innehållstyp: Publikationer