On Regulatory Requirements upon Seismic Qualification of Nuclear Safety Equipment

U.S.NRC new regulatory requirements on equipment seismic qualification,mainly the more stringent restrictions on the use of empirical methods is analyzed.Suggestions on the establishment of relative norms of nuclear safety equipment qualification and nuclear safety regulatory requirements in China are proposed.The norm,standards and regulatory requirements should be amended timely with the development of technologies and the build-up of experiences,but fully considering the implementablility of the proposals during the amending.