I'd have designed the plant with passive cooling, ie, natural circulation, as well as redundant systems, if I was building one in an area known for strong quakes. As soon as a reactor is scrammed, it continues producing about 7% of the average power production of the previous several days of operation because of radioactive decay of unstable isotopes produced by fission. This decay heat then declines. http://www.rertr.anl...EV1/TDHEAT.html (Former NEC 3383, surface ship reactor operator, ET2