​In France, seismic resistance of nuclear facilities has been a concern from the outset. Beginning with the first nuclear power plants, design and construction standards have included significant margin using a reference earthquake based on a seismic hazard assessment to ensure the safety of facilities. Every ten years, under the supervision of ASN, the French Nuclear Safety Authority, the safety of nuclear power plants is reassessed with regard to seismic hazard and takes into account advances in earthquake-resistant engineering and changes in standards. The work involves not only reactor buildings, which receive particular attention, but also more complex structures such as electrical buildings, which contain safety-related equipment. In order to learn more in this field, EDF and CEA launched a far reaching program, SMART, in 2006. It's time to review this project and the knowledge gained during its various phases.