I think that nuclear power must focus on safety and efficiency. Fuel rods from reactors near me are discarded after only 2% of the potential power is released

I think that nuclear power must focus on safety and efficiency. Fuel rods from reactors near me are discarded after only 2% of the potential power is released from them. I understand that the best designs can extract 40%, leaving less waste. New reactors should be held to a minimum of 20%. The "daughter nuclei" in the 2% exhausted fuel rods require active cooling (circulating water) for well over a year before they exhaust and cool sufficiently for dry storage. We need "walk-away safe" designs where a complete loss of power doesn't result in catastrophic explosions. We have kept this 50s technology way past its design life. It isn't replaced because of resistance to building any more nuclear at all, which is not helping.