SEISMIC RESPONSE OF LEAD- AND LEAD-BISMUTH-COOLED REACTOR VESSELS

摘要

The seismic analysis for the vessel of a heavy-liquid-metal reactor was undertaken based on the Design ResponseSpectrum approach. The variation of the normal-mode frequency and total peak stress intensity with the vessel diameter andthickness was also studied. It was found that the frequency of the first normal mode increases with increasing vessel diameterand thickness, while the total peak stress intensity decreases with increasing vessel thickness and is roughly independent ofthe vessel diameter. Two new dimensionless groups are introduced that enable correlation of the frequency and stressintensitydata with adequate accuracy. It is proposed that these correlations be used for quick estimate of the seismic responseof a vessel of arbitrary size and material, subject to an earthquake of arbitrary magnitude.