The SOTERIA work plan is divided into six work packages (WP). WPs 2 to 5 are dealing with technical aspects and shall provide answers on the industrial key issues at stake, as described in section Objectives & Results. WP1 is dedicated to the project strategic and operational management. WP6 groups the activities around training, end-user involvement and assessment, as well as the dissemination and the exploitation of the project results.

At the beginning of the project, the SOTERIA End-User Group (see Collaboration for more information) set up within WP6, together with the modelers involved in WP5, will define requirements for models to be developed in WP5. Based on these models, the following experiments will be set up in WPs 2-4:

  • WP2 will set up experiments to improve the microstructural and mechanical models for RPV and internals, taking into account flux and fluence effects for a better estimation of embrittlement, hardening and swelling.
  • WP3 will set up experiments to assess the effect of initial microstructural heterogeneities on RPV fracture behaviour giving information for improving fracture models developed in WP5.
  • WP4 will set up experiments to better describe IASCC and evaluate environmental effects on internals failure. Experimental data will be useful to improve IASCC models developed in WP5.

The output from these experiments will be used in WP5 throughout the project to update the developed models and algorithms. WP5 will also integrate all models on a platform (see Objectives & Results).

During the project, the developed models will be assessed by the SOTERIA End-User Group, taking into account industrial reference cases. Recommendations for adjustments will be made to WP5 in an iterative manner, including (1) the delivery of different versions of the platform to the End-User Group, (2) the training of the end users on the particular version, (3) the feedback from the end-users and the consideration of this feedback in the further development of the models.

Work Plan Project h2020


The main objective of WP1 is to set up an effective coordination and management framework for the SOTERIA consortium in order to ensure that the project progresses towards its planned objectives with respect to the contractual commitments.

WP2 will assess the transferability of data allowing to go from materials testing reactor (MTR) and surveillance programmes towards real behaviour of structural components (reactor pressure vessel and internal steels). WP2 will also provide experimental data allowing to validate atomic scale modelling of microstructural evolution under irradiation, including grain boundaries.

The aim of WP3 is to improve the applicability of the use of modelling tools, embrittlement trend curves and surveillance data to predict radiation induced ageing phenomena in reactor pressure vessel steels from an end-user perspective, while focusing on uncertainties concerning the determination of reactor pressure vessel fracture toughness under irradiation.

The work within WP4 will allow to better understand the influence played by the environment on susceptibility of irradiation-assisted stress corrosion cracking (IASCC) in internal steels. A particular focus will be put on the characterisation of irradiation effects on the microstructural evolution.

The main objective of WP5 is to develop microstructural, mechanical and irradiation-assisted stress corrosion cracking (IASCC) models for the simulation of ageing phenomena in reactor pressure vessels and internal steels and to integrate those models into a single multi-scale platform.

WP6 comprises the dissemination, training, innovation management and end-user activities within the SOTERIA project. This WP also supports the technical tasks carried out within WP2, WP3, WP4 and WP5 by  incorporating the tools designed to both enhance the work progress and communicate the obtained results.

Available Documentation

Coming soon