Seismic safety of nuclear facilities has been under account since beginning the 70s of last century. The seismic protection is realised in practice by special seismic safety management and by seismic safety engineering. Their real forms are codified in national building laws and in developed countries with medium and high seismicity. The ground of seismic safety of nuclear facilities in the determination of seismic hazard of site in which the nuclear facility is located, distinguishing and getting control over unacceptable risks that are connected with vulnerabilities of site, buildings, technologies and technical equipment. The present paper deals with the seismic hazard, seismic risk and seismic safety.
