Abstract
The Japanese government accepted utilizing seismic isolation technology for nuclear power plants with the 2006 revision to the Nuclear Power Plant Seismic Design Review Guidance. The public-private sectors formed a team in 2010 to begin development of a seismically isolated nuclear plant using the existing lead rubber bearing. This paper focuses on the seismic response analysis of main steam crossover piping between the seismically isolated reactor building and non-isolated turbine building. Multiple input response spectra and time history analyses of the crossover piping are performed and we confirm the structural integrity of piping and the validity of the multiple input analysis method by comparison with the conventional response spectrum analysis using enveloped floor response spectrum.
