Din avgränsning ger 419 träffar.
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2020:16 Estimates ofJ-integral and COD for circumferential through wall cracks under global bending including the effect of pipe end restraint
SSM perspective Background Leak-before-break (LBB) piping assessments have shown that piping systems can withstand long through-wall cracks before pipe rupture is expected. This is somewhat because pipe ... investigate what impacts the assumption degree of restraint at the ends of an analysed piping segment have on leak-before-break assessments and leakage rate calculations. Results The study conclude that crack...
Innehållstyp: Publikationer -
2017:11 Extended Common Load Model: A tool for dependent failure modelling in highly redundant structures
Common Load Model (CLM), originally defined in the 70’ies, differs from other CCF models, as it relies on a specific physical analogy. The model was extended in late 80’ies with specific aims to model highly ... before. However, it has been developed with certain funding via the Nordic PSA group (NPSAG) including SSM. It has therefore been an interest to have the method properly documented and published. The objective...
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 -
02:4 Qualification of Electrical Components in Nuclear Power Plants. Management of Ageing
Swedish report has the reference SKI Rapport 01:17. The publication as a report in the inspectorate’s research series does not change the status of the report as a research result and shall not be regarded ... the existing results together with the international development will be reviewed. Based on this a decision on possible needs for complementary studies will be taken. The SKI report 2002:04 has been updated...
Innehållstyp: Publikationer -
2011:12 Analysis of Barrier Performance: Modelling of Copper corrosion scenarios with and without buffer erosion
(intersecting deposition holes) and local SRB activity all contributes to an uneven corrosion profile on the canister. This is not caused by a true localized corrosion phenomenon but rather by what might ... formulation of SRB activity suggests only a moderate influence on copper corrosion. Steven J. Benbow, Peter C. Robinson and Sarah P. Watson SSM English The purpose of this project was to develop a numerical...
Innehållstyp: Publikationer -
2013:27 Numerical simulations of headed anchors break in reinforced and non-reinforced concrete structures
349-06 code open up today for a more detailed analysis where the beneficial impact of reinforcement on anchor capacity can be taken into account. How this analysis can be done is, however, not explicitly ... sufficient reinforcement is present. The objective of the project is to study the effect of reinforcement on the concrete breakout capacity of cast in headed bolts in concrete structures by numerical simulations...
Innehållstyp: Publikationer -
2011:20 A Guidebook for Evaluating Organizations in the Nuclear Industry – an example of safety culture evaluation
Organizations in the nuclear industry need to maintain an overview on their vulnerabilities and strengths with respect to safety. Systematic periodical self- assessments are necessary to achieve this overview ... system safety. The validity and credibility of the evaluation stem largely from the evaluation team‟s ability to crystallize what they mean by organization and safety when they conduct organisational safety...
Innehållstyp: Publikationer -
2017:13 Monte Carlo patient-specific pre-treatment QA system for volumetric modulated arc therapy
increased. Current practices in Sweden normally compare the delivered dose with the planned dose based on measurements with different methods, for instance: portal dosimetry, point dose verification and/or ... and the performing of retrospective calculations and analysis. The Swedish Radiation Safety Authority's intention with the project is to contribute to a safer radiotherapy. Furthermore, the authority would...
Innehållstyp: Publikationer -
2009:21 The geological history of the Baltic Sea a review of the literature and investigation tools
The intention of the study is to contribute to the understanding and characterization of earlier and on-going and bedrock deformation in coastal areas outside Forsmark and Laxemar where the Swedish Nuclear ... bedrock movements where also future movements cannot be excluded. Monica Beckholmen och Sven A Tirén SSM English The bedrock in Sweden mainly comprises Proterozoic magmatic and metamorphic rocks older than...
Innehållstyp: Publikationer -
2013:24 Modelling of nuclear fuel cladding under loss-of-coolant accident conditions
The results are compared with experimental data on cladding rupture strain, temperature and pressure. The effects of heating rate and rod internal pressure on the rupture strain are evaluated by systematic ... alloy, for which no definite constitutive relation is yet available. Tero Manngård and Ali R. Massih SSM English We present a unified model for calculation of zirconium alloy fuel cladding rupture during...
Innehållstyp: Publikationer