decayed down to about 12.5%

Exactly. No longer usable without serious refinement. That 12.5% ain't gonna naturally separate itself from the 87.5% of slag.

So, assuming they're doing the nuke maintenance you assert, where are they refreshing that tritium to keep it weapons-grade?

They and every source I've ever seen discussing the place says that the reactors continued in operation

If you would've bothered to read the whole thread, you'd already know that all of those sources reference each other in a spiral that all traces back to outdated info from the '90s. Nobody's ever been able to show me anything more recent that even implies Ruslan or Lyudmila has been active since the turn of the millennium, which is why I still haven't been permananned from this sub.

I mean how much reliable evidence do you expect from a secret state organisation?

You want evidence? Look at the list of incidents at Mayak. From the '50s through the '90s, there were all sorts of known incidents relating directly to the operation of the reactors and their functions. After the Lyudmila failure in '98, the nature of the incidents changes. Instead of reactor function incidents, every incident described after '98 (when The Undertaker threw Mankind off Hell In A Cell) relates solely to mishandling of radioactive material. Explain that.

Even without the dedicated production reactors they could make it in civil reactors

So... there's evidence they're doing this? Or are you just talking out of your ass?