A 2,064-megawatt nuclear station outside Toronto goes dark next week so crews can pull all 1,520 pressure tubes from its four reactors, a swap no US reactor can make, because every American reactor keeps its fuel inside one steel vessel that has never bee

A 2,064-megawatt nuclear station outside Toronto goes dark next week so crews can pull all 1,520 pressure tubes from its four reactors, a swap no US reactor can make, because every American reactor keeps its fuel inside one steel vessel that has never bee