Nope it's basically chemical - you remove the waste products that you don't want, you aren't trying to extract pure U235. The technology to enrich U has nothing to do with reactors it's more precison machining.
Reactor fuel is a pretty useless starting point for a weapon. The same non-proliferation treaty that we keep going on about says that we (nice safe countries with nuclear weapons) are supposed to provide the uranium for them in return for them not trying to play with the stuff themselves.
We don't seem to mind have high pressure gas pipelines or Methyl-cyanide plants in poor countries - presuably because an accident only effects the locals.
So India, Pakistan, South Africa, Brazil are allowed them but Switzerland, Holland, Germany, Sweden aren't.
The only country I can think of that built nuclear power plants primarily for power rather than weapons research is Canada.
Fusion + short term + viable - aren't often used in the same sentance.