In the course of the development of the commercial Liquid Metal Fast Breeder Reactor (LMFBR), the mitigation of seismic load on building and components should be performed. This is required not only from the standpoint of compatibility of seismic design and high-temperature structural design, but also effective for cost reduction of the plant.
We studied following two schemes on the reactor building of 1, 000MWe loop type LMFBR:
(1) Application of seismic isolation
(2) Estimation of effects of building embedment.
The results showed that above two schemes were effective to mitigate the seismic load of reactor building and component.
