exactly 0 people have died due to nuclear power plant accidents.
Not actually true unfortunately
WRT to nuclear power reactors (as opposed to sloppy work at a nucler chemical works) the landmark one was a mobile army reactor. the SL-1. It's 3MW standard level jumped to 20GW in 4mS on over removal of the sole control rod (no one designs reactors with single control rods any more). It killed all 3 crew and a first responder. IIRC one of the crew was harpooned to the ceiling by the control rod. :-(
Later-to-be-President James Carter was part of the clean-up team.
This may have had something to do with his continuing the block on reprocessing used nuclear fuel brought in under Gerald Ford.
We can do better now. And we must.