Originally Posted by
BoilerUP
The biggest issue with Fukishima was having their backup generators on the ground and not on the roof...despite multiple warnings about it being a vulnerability.
Earthquake knocked out grid power and backuo generators worked as designed, then the tsunami from the earthquake swamped the backup generators.
It was a human leadership and management failure, not a technology failure.
Yes, the backup gens were not only on the ground, they were in the basement, so susceptible to tsunami induced flooding.
Engineers had told managers that was a bad idea.
Modern nuclear plant designs should ideally include convective (natural circulation) emergency cooling so that the core residual heat is removed by convective flow without any need for powered pumps... one less thing to go wrong.