Not actually both "robust passive safety systems", but the original safety systems in Fermi's reactor were certainly robust. > In case of emergency, such as We

Not actually both "robust passive safety systems", but the original safety systems in Fermi's reactor were certainly robust. > In case of emergency, such as Weil becoming incapacitated or failure of the automatic control rod, Norman Hilberry stood on the balcony with an improbable nuclear safety device: an axe. In an emergency, he would cut a rope that ran up to the balcony, releasing another emergency control rod into the pile. The last line of defense consisted of a "liquid-control squad" that stood on a platform, ready to flood the pile with a cadmium-salt solution. Taken together, these safety precautions were a strange combination of the high-tech and the ad hoc. https://www.osti.gov/opennet/manhattan-project-history/Events/1942-1944_pu/cp-1_critical.htm https://www.osti.gov/opennet/manhattan-project-history/Event...