>They also lack other safety systems a commercial nuclear power station reactor has, having only a single control rod. They also have a very strong negative th

>They also lack other safety systems a commercial nuclear power station reactor has, having only a single control rod. They also have a very strong negative thermal reactivity coefficient, meaning that as the reactor gets hotter it produces much less power. [0] From what I understand, with any reasonable amount of cooling this reactor won't melt down even with the control rod entirely removed, where "reasonable amount of cooling" means "not left to float in a vacuum with no radiators". (Also, if you remove the neutron reflector it'll stop working) Granted, you'd probably want a bit more shielding before putting one in your basement. But it's not going to melt down. [0] https://beyondnerva.files.wordpress.com/2018/05/full-power-test-result-slide.png https://beyondnerva.files.wordpress.com/2018/05/full-power-t...