you forgot to calculate how much of cost of nuclear energy(sic) is going towards removing all CO2, NOx it is generating....
so if you are calculating efficiency of one power plant calculate this into price of another power plant too.
we can build utility PV + 12 hour battery with LCOE lower than nuclear... PV + battery price is for already deployed system. nuclear price is prediction of price of new plant...
Nuclear is dead in the water. And it is not pacific ocean water.