"The problem our government had with theirs several years ago when they were trying to make weapons-grade plutonium at one of their nuclear power plants."

But the study runs directly counter to the department's plans to increase the capacity to make plutonium.

Reconstituted fuel rods could, theoretically, be used to make plutonium.

The process was very expensive and at the time made plutonium about the most expensive material on earth.

Krasnoyarsk-26's sole purpose for existing is to make plutonium.

Krasnoyarsk-26's sole purpose for existing is to make plutonium, the key ingredient in nuclear weapons.

Russia and America both say they need no longer make military plutonium.

Heavy water is a key ingredient in making plutonium for nuclear bombs.

It would take 1,000 to 1,500 rods to make enough plutonium for a weapon, experts say.

They can then draw their own conclusions about how much plutonium the reactor has made.