actinides

The new reactor would immediately burn up actinides, radioactive uranium isotopes.

New Nuclear Reactors May Destroy Atomic Waste | Inhabitat 2010

MOX fuel has greater concentrations of "actinides," or radioactive elements and runs hotter than conventional fuel, so a shut down plant would have to deal with more "decay" or residual heat from fuel rods.

Officials Struggle to Prevent Meltdown at Two Reactors Yuka Hayashi 2011

The use of thorium instead of uranium means that less actinides are produced in the ADS itself.

Thorium 2009

Fission products are removed continuously and the actinides are fully recycled, while plutonium and other actinides can be added along with uranium-238 (238U) without the need for fuel fabrication.

Generation IV nuclear reactors 2009

There is therefore the possibility of sustaining a fission reaction which can readily be turned off, and used either for power generation or destruction of actinides resulting from the U/Pu fuel cycle.

Thorium 2009

The radiotoxicity of these wastes would be relatively short-lived compared with the actinides (long-lived alpha-emitting transuranic isotopes) from a fission reactor.

Nuclear fusion power 2009

Three variants are proposed: a 50-150 MWe type with actinides incorporated into a U-Pu metal fuel requiring electrometallurgical processing (pyroprocessing) integrated on site; a 300-1500 MWe pool-type version of this, and a 600-1500 MWe type with conventional MOX fuel and advanced aqueous reprocessing in central facilities elsewhere.

Generation IV nuclear reactors 2009

As with the SFR, used fuel would be reprocessed on site and all actinides would be recycled to minimize production of long-lived radioactive wastes.

Generation IV nuclear reactors 2009

Lead-cooled fast reactors: The LFR is a flexible fast neutron reactor which can use depleted uranium or thorium fuel matrices, and burn actinides from LWR fuel.

Generation IV nuclear reactors 2009

The first stage will lead to demonstration fuel containing minor actinides being used in Japan's Monju reactor.

Generation IV nuclear reactors 2009