10 CFR Part 110, Appendix M to Part 110 - Categorization of Nuclear Material
|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|
Title 10 published on 2015-01-01.
The following are only the Rules published in the Federal Register after the published date of Title 10.
For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.
Title 10 published on 2015-01-01
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 110 after this date.