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Fukushima is striving for a transformation from nuclear to renewable energy generation , and the review of safety standards has led to a large number of changes in the operation of nuclear power plants. This reeration into account. This particularly concerned a consideration of accident scenarios occurring beyond a plant's design. The politically initiated so-called 'Energiewende' in Germany as a result of events in The reactor accident of Fukushima in 2011 led to a worldwide review of design...Fukushima is striving for a transformation from nuclear to renewable energy generation , and the review of safety standards has led to a large number of changes in the operation of nuclear power plants. This reeration into account. This particularly concerned a consideration of accident scenarios occurring beyond a plant's design. The politically initiated so-called 'Energiewende' in Germany as a result of events in The reactor accident of Fukushima in 2011 led to a worldwide review of design principles and safety requirements of nuclear power plants, also taking the entire infrastructure required for a power plant's op-Metallic components in nuclear engineering are exposed to extensive loads such as pressurization and temperature changes which can affect the properties of the material significantly depending on the load spectrum applied. In view of developing a procedure to evaluate the residual service life of metallic components in nuclear power plants aged during service, metastable austenitic steel AISI 347 (German designation: X6CrNiNb18-10) has been considered as an example. To this purpose, total strain-controlled fatigue tests were carried out under different environmental conditions and monitored by continuously measuring thermometric, resistometric, electromagnetic and electrochemical parameters. These parameters provide an information gain in terms of material characterization when compared to conventional strain measurements. Based on these parameters, the short time evaluation procedure Strain-Life has been developed, which allows the determination of local S-N curves with a significantly reduced effort as compared with traditional procedures. This method has been implemented into the structural simulation program PROST for the integrity assessment of the components while considering local fatigue properties. This very effective method allows for the determination of local fatigue properties including the strain-specific local scatter of the metallic microstructure properties of the material which has not been possible by traditional means.» weiterlesen» einklappen

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DDC Sachgruppe:
Ingenieurwissenschaften