Special nuclear material

Special Nuclear Material (SNM) is fissile material. They are specifially defined by the Atomic Energy Act of 1954 as plutonium, uranium-233, or uranium enriched in the isotopes uranium-233 or uranium-235.

NRC regulations require each licensee who possessed during a reporting period special nuclear material (SNM) in a quantity totaling 1 gram or more of contained uranium U²³⁵, U²³³, or plutonium to prepare and submit in computer-readable format reports concerning SNM received, produced, possessed, transferred, consumed, disposed of, or lost.

CODE	Description	Notes
10	Depleted Uranium	For depleted uranium and source material, enter the U235 isotope weight to the nearest kilogram
E1	Uranium enriched greater than normal but less than 5 percent
E2	Uranium in enrichment of 5 percent or more but less than 20 percent
E3	Uranium in enrichment of 20 percent or more but less than 80 percent
E4	Uranium in enrichment of 80 percent or more
50	Plutonium	enter the sum of Pu239 and Pu241 to the nearest gram
70	U233
81	Normal uranium
83	Plutonium Pu238	Report as Pu238 if the contained Pu238 is greater than 10 percent of total plutonium by weight. Otherwise, report as plutonium. enter the weight of the isotope Pu238 to the nearest 0.1 gram.
88	Thorium
89	Uranium in cascade

Reporting Loss of Theft

• 10 CFR 74.11, Reports Of Loss Or Theft Or Attempted Theft Or Unauthorized Production Of Special Nuclear Material

See also

• NUREG/BR-0006, Instructions for Completing Nuclear Material Transaction Reports

External links

• Nuclear Material - NRC Website