Din avgränsning ger 61 träffar.
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2016:36 Säker kraftförsörjning i svenska kärnkraftanläggningar? – En historisk betraktelse
varför (know-why) dessa val gjordes under konstruktionen av anläggningarna. Kunskapen om hur dessa system fungerar finns dokumenterad och bevarad, men det är tunt med information om vilka förutsättningar ... begränsningar som inte gynnar den övergripande reaktorsäkerheten. Det som bör belysas är hur elkraftsystemen konstrueras och används. Detta bör vara fokus för kommande arbeten som myndigheten kommer bedriva...
Innehållstyp: Publikationer -
2016:35 Säkerhetsvärdering mot plastisk kollaps vid skadetålighetsanalyser
anläggningar utgår från den brittiska R6-metoden men är vidareutvecklad för att ha ett säkerhetsvärderingssystem som är kompatibelt med säkerhetskraven som uttrycks i den amerikanska tryckkärlsstandarden ... genomförande av skadetålighets-analyser för rörsystem. Vid uppdateringen utfördes flera stora förändringar kring hur säkerhetsvärderingen gentemot plastisk kollaps hanteras. Bl.a. infördes en ny flytspänningsdefinition...
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 ... 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 fatigue cracks...
Innehållstyp: Publikationer -
2016:27 Validation of fatigue fracture mechanics approaches
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 evaluate ... evaluate fatigue flaw tolerance assessments used in industry, which are based on the fracture mechanical approach implemented in ProSACC. Objective The present study aims to validate the used fatigue flaw...
Innehållstyp: Publikationer -
2016:25 Licensing of safety critical software for nuclear reactors
– Common position of international nuclear regulators and authorised technical support organisations – Revision 2015...
Innehållstyp: Publikationer -
2016:29 Evaluation of the Swedish participation in the Halden Reactor Project 2006–2014
This is a report on the evaluation of the Swedish participation in the Halden Reactor Project 2006-2014. The study has consisted in evaluating the types and extent of added value from the Swedish participation ... participation in the Halden Reactor Project, and to determine what additional added value the participation could supply for the Swedish authority. It can be concluded from the study that the impacts from...
Innehållstyp: Publikationer -
2016:30 Measurement of Parameter Values for Predicting Corrosion Phenomena on Copper in Swedish HLNW Repositories
for the isolation of high-level nuclear waste in Sweden, has been studied in simulated, sulphide- and chloride containing granitic rock groundwater and the data are interpreted in terms of the Point Defect ... The results indicated that a sulphide barrier layer forms on the copper surface, and that chloride ion can induce passivity breakdown, and hence induce the development of localized corrosion damage (LCD)...
Innehållstyp: Publikationer -
2016:31 Measures and method characteristics for early evaluation of safe operation in nuclear power plant control room systems
there is a need to develop evaluation methods in parallel with the development of control rooms in conjunction with construction modifications and other changes. This includes more indepth analysis of the methods ... conventional methods of evaluating control rooms and issues need to be reexamined. SSM has previously provided funding for several individual research projects regarding evaluation of control rooms. Both...
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 probability distribution...
Innehållstyp: Publikationer -
2016:23 Technical Note, Modelling of the thermal evolution of the KBS-3 repository at Forsmark and associated induced seismic activity
construction and operation of the KBS-3 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 ... and technical issues. The results from the consultants’ tasks are reported in SSM’s Technical Note series. The general objective of the review is to provide comments on SKB’s post-closure safety analysis...
Innehållstyp: Publikationer