10 CFR Part 110, Appendix M to Part 110 - Categorization of Nuclear Material

View PDF at GPOPt. 110, App. M
Appendix M to Part 110—Categorization of Nuclear Material
Categorization of Nuclear Material
[From IAEA INFCIRC/225/Revision 5]
Material Form Category I Category II Category III 3
1 All plutonium except that with isotopic concentration exceeding 80 percent in plutonium-238.
2 Material not irradiated in a reactor or material irradiated in a reactor but with a radiation level equal to or less than 1 Gy/h (100 rad/h) at 1 m unshielded.
3 Quantities not falling in Category III and natural uranium, depleted uranium and thorium should be protected at least in accordance with prudent management practice.
4 Although this level of protection is recommended, it would be open to States, upon evaluation of the specific circumstances, to assign a different category of physical protection.
5 Other fuel which by virtue of its original fissile material content is classified as Category I or II before irradiation may be reduced one category level while the radiation level from the fuel exceeds 1 Gy/h (100 rad/h) at one meter unshielded.
1. Plutonium1 Unirradiated 2 2 kg or more Less than 2 kg but more than 500 g 500 g or less but more than 15 g.
2. Uranium-235 (235U) Unirradiated 2:
—Uranium enriched to 20 percent 235U or more 5 kg or more Less than 5 kg but more than 1 kg 1 kg or less but more than 15 g.
—Uranium enriched to 10 percent 235U but less than 20 percent 235U 10 kg or more Less than 10 kg but more than 1 kg.
—Uranium enriched above natural, but less than 10 percent 235U 10 kg or more.
3. Uranium-233 (233U) Unirradiated 2 2 kg or more Less than 2 kg but more than 500 g 500 g or less but more than 15 g.
4. Irradiated Fuel (The categorization of irradiated fuel in the table is based on international transport considerations. The State may assign a different category for domestic use, storage and transport taking all relevant factors into account) Depleted or natural uranium, thorium or low enriched fuel (less than 10 percent fissile content) 4 5
[79 FR 39299, July 10, 2014]

Title 10 published on 2015-01-01.

No entries appear in the Federal Register after this date, for 10 CFR Part 110.