・ The facilities important for safety, including sodium systems, are located 21 m above sea level, and seawater pumps for cooling are surrounded by waterproof walls that offer protection against tsunamis.

　・ The integrity of reactor cooling systems against earthquakes has been reaffirmed by a seismic safety estimation based on the new guideline.

　・ Stainless steel is used for the cladding material, and therefore, there is no production or explosion of hydrogen.