Also, they operate at high temperatures, and the fuel is molten, so they can't melt down, but in the event that the reactor ever went out of tolerances, or you lost off-site power in the case of something like Fukushima, there's a dump tank.
并且，这些反应堆是在很高的温度下运行的， 燃料已经是熔化态，所以不会出现熔毁， 但是如果出现反应超出反应堆耐受性的情况 或者装置外电源断电 像福岛事故那样，就必须有一个核废料贮藏罐。