[for-q-clinton]

Nah, they’d still have to refine much much much further. The real threat would be a bad actor making a dirty bomb or just leaving the uranium in the a few trash cans in a crowded area. Or in a sewer, subway, Stadium, etc...

[Pontiac]

It’s 20% enriched uranium would allow a bad entity to make an atomic bomb with maybe 10% of the effort required if started from natural uranium.

Weapons grade Uranium has to be enriched above 80%.

After the reactor has been at full power for a few months the radiation from the fission products will protect the reactor from any but the most determined and well informed thieves.