Nuclear Materials

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In fulfilling its mission, EM manages and dispositions surplus nuclear materials and spent nuclear fuel. These are not waste. They are nuclear materials no longer needed for national security or other purposes, including spent nuclear fuel, special nuclear materials (as defined by the Atomic Energy Act) and other nuclear materials.

The Nuclear Waste Policy Act of 1982 defines Spent Nuclear Fuel (SNF) as fuel that has been withdrawn from a nuclear reactor following irradiation, the constituent elements of which have not been separated by reprocessing. SNF may include: (1) intact, non-defective fuel assemblies or fuel rods; (2) failed fuel assemblies or fuel rods; (3) segments of fuel rods or pieces of fuel derived from spent fuel rods; and (4) various nonfuel components and structural parts of irradiated fuel assemblies.

EM's mission is to safely and efficiently manage its SNF and prepare it for disposal in a geologic repository.

EM, in coordination with the National Nuclear Security Administration, is responsible for disposition of surplus, non-pit, weapons-usable plutonium-239. EM is also responsible for disposition of about 21 metric tons of surplus highly enriched uranium materials, which includes approximately 13.5 metric tons contained in spent nuclear fuel. 

EM’s large and diverse inventory of nuclear materials presents a broad range of technical challenges, often requiring development of unique technical solutions, which is the intent of  EM's nuclear materials technology development program.