2024年3月7日(木) 16:05 〜 17:45 315 (Conference Center 3F)

Chair:Thomas Heitz(IRSN)
Co-Chair:Elias El Haber(EDF)

Organizer: Thomas Heitz (IRSN)
Co-organizer: Elias El Haber (EDF)
Aim and Scope for Special Session:
On November 11, 2019, at 12h30 pm, a 4.9 magnitude (Mw) shallow earthquake occurred at approximately 15 km from Cruas NPP (called Le-Teil earthquake). The peak ground acceleration values recorded in free field are between 0.02 and 0.05g (in three directions for two monitoring stations). In accordance with operational procedures, the in-structure response was also recorded. In addition, post-earthquake walkdowns were performed to collect in situ data on various SSCs.
Those novel and valuable data have motivated EDF and IRSN, under the umbrella of the OECD/NEA, to organize the SMATCH international benchmark that began in early 2023 and continue until 2024. The objective of this benchmark is to assess the efficiency of engineering practices for calculating the seismic response of structures, particularly for nuclear power plants with seismic base isolation. The benchmark consists of two main phases: (1) characterizing the seismic ground motion at the Cruas site and (2) assessing the seismic response of the base-isolated Cruas nuclear power plant. During this special session, a general presentation of the data provided to the participants and the questions to answer will first be given. Then, some teams will present their work and results regarding the phase (1). Eventually, any consensus reached so far at each benchmark stage at the date of the conference will be shared and discussed.