Some countries, most notably France, currently use a closed fuel cycle in which plutonium is separated from the spent fuel and a mixture of plutonium and uranium oxides is subsequently burned again.

• 有些国家，尤其是法国，使用一种封闭式燃料循环，能将钸从核废料分离出来后，与氧化铀混合再次当成燃料。