Even then, you can’t just use pure uranium if you want to get a good explosion rather than a hot meltdown. It has to be spiced up with other stuff to perk up the rate at which the newly created critical mass undergoes reaction. Norkie quality control stinks, to put it mildly. The other stuff is going to be the problem here. IMHO.
They did finally get a chunk of metal into orbit after several failures; they’re not COMPLETELY incompetent.