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WP5 Workgroup SOTERIA Project meeting, EDF Lab Les Renardières, France, 17-18 May 2018


The SOTERIA project (»Safe long term operation of light water reactors based on improved understanding of radiation effects in nuclear structural materials«) is a four-year long European project launched on 1.9.2015 under the auspices of EURATOM in Horizon 2020. The main objective of the project is to improve the understanding of aging of steels used for the production of reactor pressure vessels and its internal components. With the research in the field of steel aging, key information which are necessary for the safe and long-term operation of existing European nuclear power plants, will be provided to the regulators and operators. Many European research centers (including IJS) and industrial partners are involved in the project. The project coordinator is CEA, France.

At the meeting of the WP5 workgroup, which deals with modeling and simulations, the work results of the first 30 months of the project were presented. The IJS participates in the project in

  • developing a model of crystalline plasticity for a mechanical description of neutron irradiated steels and
  • modeling of intercrystalline borders to simulate early damage or cracks.

At the meeting, the IJS together with IRSN, CNRS and CEA presented a comparison of two methods - the finite element method and the fast Fourier transform method - in the case of a tensile load of an irradiated polycrystalline aggregate. The title of the presentation was: »Intergranular stress calculation and irradiated stainless steel model using FEM and FFT approaches«.

The meeting, organized by the EDF in Les Renardierès, was attended by dr. Samir El Shawish of the Reactor Engineering Division from Jožef Stefan Institute.

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