Used nuclear fuel is a solid material safely stored at nuclear plant sites. This storage is only temporary—one component of an integrated used fuel management system that addresses all facets of storing, recycling and disposal.

Integrated Used Fuel Management
Under an integrated management approach, used nuclear fuel will remain stored at nuclear power plants in the near term. Eventually, the government will recycle it and place the unusable end product in a proposed repository at Yucca Mountain, Nev.

Storage of Used Nuclear Fuel
Currently, used nuclear fuel is stored at the nation's nuclear power plants in steel-lined, concrete vaults filled with water or in massive, airtight steel or concrete-and-steel canisters. 

Recycling Used Nuclear Fuel
The federal government plans to develop advanced recycling technologies to take full advantage of the vast amount of energy in the used fuel and reduce the amount and toxicity of byproducts requiring disposal.

Yucca Mountain
In 2002, Congress approved Yucca Mountain, Nev., a remote desert location, as a site to be studied for licensing as a centralized deep geologic repository for used nuclear fuel and other high-level radioactive waste.

Transportation
The U.S. Department of Energy will transport used nuclear fuel to the repository by rail and road, inside massive, sealed containers that have undergone safety and durability testing.

Low-Level Radioactive Waste
Low-level waste is a byproduct of the beneficial uses of a wide range of radioactive materials. These include electricity generation, medical diagnosis and treatment, and various other medical processes.