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.
Og, de opererer ved høje temperaturer, og brændstoffet er smeltet,  så de kan ikke nedsmelte, men for det tilfælde at reaktoren  kommer uden for sine tolerancer, eller man mistede strømmen på stedet ligesom Fukushima, er der en tank.