"It’s also designed to shut down automatically if something goes wrong — in contrast to some older systems that required electricity to trigger safety measures,

"It’s also designed to shut down automatically if something goes wrong — in contrast to some older systems that required electricity to trigger safety measures, which is what led to the Fukushima Daiichi accident in Japan in 2011" I believe they are referring to it being a pebble-bed reactor, I think the world's first in commercial use. Exciting development