The Strategic Research Agenda of the EU Sustainable Nuclear Energy Technical platform requires new large infrastructures for its successful deployment. MYRRHA has been identified as a long term supporting research facility for all ESNII systems and as such put in the high-priority list of ESFRI. The goal of MAXSIMA is to contribute to the “safety in MYRRHA” assessment.
\nMAXSIMA has five technical work-packages. The first contains safety analyses to support licensing of MYRRHA. Design-based, design extended and severe accident events will be studied with a focus on transients potentially leading to fuel pin failures. Fuel assembly blockage and control system failure are the least unlikely events leading to core damage. For code validation a thermal-hydraulic study of different blockage scenarios of the fuel bundle and tests of the hydrodynamic behaviour of a new buoyancy driven control\/safety system are planned. Both are supported by numerical simulations. Safety of the Steam Generator is treated by looking at consequences and damage propagation of a SG Tube Rupture event (SGTR) and by characterising leak rates and bubble sizes from typical cracks in a SGTR. Additionally a leak detection system and the drag on bubbles travelling through liquid LBE are studied. MOX fuel segment qualification with transient irradiations is a big step in licensing. MAXIMA include validation experiments for safety computer codes involving core damage scenarios with high temperature MOX-LBE interactions. Fuel-coolant-clad chemistry is studied up to 1700\u00b0C and a core melt experiment in a reactor is prepared to assess the interaction of LBE with molten fuel. Following the Fukushima accident, effort is put on development of enhanced passive safety systems for decay heat removal and on confinement analyses for HLM systems. A separate work package is dedicated to education and training. Beside workshops, lecture series and training sessions, virtual-safety simulator software will be developed.<\/p>\n","protected":false},"featured_media":11815,"template":"","meta":{"_acf_changed":false},"gruppo":[],"class_list":["post-19625","projects","type-projects","status-publish","has-post-thumbnail","hentry"],"acf":{"title":"Methodology, Analysis and eXperiments for the \"Safety In MYRRHA Assessment\"","acronym":"MAXSIMA","project_uuid":"6197f404-b567-1032-95fe-0030485a3848","start_date":"01\/11\/2012","end_date":"31\/10\/2016","funder":"EU FP7","partners":"\n
| Nome<\/th>\n | Nazione<\/th>\n | Ruolo<\/th>\n <\/tr>\n\n |
|---|---|---|
| STUDIECENTRUM VOOR KERNENERGIE<\/a><\/td>\n | Belgium<\/td>\n | Coordinator<\/td>\n <\/tr>\n\n |
| Agenzia Nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile<\/a><\/td>\n | Italy<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| Centro de Investigaciones Energeticas Medioambientales y Tecnologicas<\/a><\/td>\n | Spain<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| National Nuclear Centre<\/a><\/td>\n | Italy<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| Karlsruher Institut fuer Technologie <\/a><\/td>\n | Germany<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| ANSALDO NUCLEARE SPA<\/a><\/td>\n | Italy<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| GESELLSCHAFT FUER ANLAGEN - UND REAKTORSICHERHEIT (GRS) MBH<\/a><\/td>\n | Germany<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| KUNGLIGA TEKNISKA HOEGSKOLAN<\/a><\/td>\n | Sweden<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| Helmholtz-Zentrum Dresden-Rossendorf<\/a><\/td>\n | Germany<\/td>\n | Contractor<\/td>\n <\/tr>\n\n |
| Chalmers University Of Technology<\/a><\/td>\n | Sweden<\/td>\n | Contractor<\/td>\n <\/tr>\n<\/table>","proj_website":"http:\/\/maxsima.sckcen.be\/en","project_status":"Completed","project_coordinator":[{"ID":10304,"post_author":"4","post_date":"2025-06-30 17:24:42","post_date_gmt":"2025-06-30 15:24:42","post_content":"Publications: https:\/\/publications.crs4.it\/pubdocs\/index.php?idAuthor=665 Vincent Moreau, senior researcher at CRS4, takes his degree in Numerical Analysis at Paris-XI University in 1990, makes his one year Scientific Service at ONERA on atmospheric lightning numerical modeling and undergoes a Ph.D. thesis at Paris-XI, presented in 1994, on \"Functional Analysis applied to pseudo-Newtonian flows\". In 1995, he works at ENEL-CRT of Pisa on two-phase flow simulation and modeling. He arrives at CRS4 in 1996 where he works on fluid-structure interaction. Since 1997, he works in the ADS field, making CFD simulations and analysis, participating to the FP5 PDS-XADS, FP6 EUROTRANS, FP7 THINS, CDT, SEARCH and MAXSIMA, and H2020 PASCAL and PATRICIA European projects. Between 2002 and 2014, he also works occasionally on turbulent combustion simulation. From 2015 to 2019 still by means of CFD analysis, he contributes in the H2020 framework to the MYRTE project on high level waste transmutation and to the SESAME project on the criticalities of the liquid metal fluid-dynamics for applications to the clean nuclear power of the future. Currently, still in the same field of activity, he contributes to the European Projects LESTO, TRANSPARANT and ANSELMUS as well as FALCON consortium.","post_title":"Vincent Moreau","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"vincent-moreau","to_ping":"","pinged":"","post_modified":"2026-04-06 19:12:37","post_modified_gmt":"2026-04-06 17:12:37","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.crs4.it\/people\/vincent-moreau\/","menu_order":0,"post_type":"people","post_mime_type":"","comment_count":"0","filter":"raw"}],"team_members":[{"ID":10042,"post_author":"4","post_date":"2025-06-30 17:25:47","post_date_gmt":"2025-06-30 15:25:47","post_content":"Manuela Profir received a M.Sc. degree in Mathematics in 2002, followed by a master in Geometry and Algebra in 2005 at the University of Iasi (Romania) and a PhD in Differential Geometry at the University of Cagliari in 2009. From 2010 to 2012, she was beneficiary of a grant for young researchers, co-funded by EU and RAS, at CRS4, developing a research project about the mesh morphing techniques in CFD simulation and analysis codes, with a geometric and topological approach. Since 2012, at CRS4 she has been applying the moving mesh methods \t \t \t \tfor the simulation and testing of the passive insertion of the control rods system in the case of a reactor emergency shutdown, in the framework of the FP7 MAXSIMA research project. Since 2016, in the framework of the H2020 SESAME, PATRICIA, PASCAL and ANSELMUS projects, she has been performing CFD simulations and modelling of pool type experiments and new generation reactor conceptual design. She regularly collaborates with the university and supervises undergraduate students for their professional training at CRS4.","post_title":"Maria Manuela Profir","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"maria-manuela-profir","to_ping":"","pinged":"","post_modified":"2026-04-06 19:13:31","post_modified_gmt":"2026-04-06 17:13:31","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.crs4.it\/people\/maria-manuela-profir\/","menu_order":0,"post_type":"people","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"\n |