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

View PDF at GPO Pt. 110, App. M
Appendix M to Part 110—Categorization of Nuclear Material d
[From IAEA INFCIRC/225, Rev. 1]
Material Form Category
I II III e
a All plutonium except that with isotopic concentration exceeding 80 pct in plutonium-238.
b Material not irradiated in a reactor or material irradiated in a reactor but with a radiation level equal to or less than 100 rd/h at 1 m unshielded.
c Natural uranium, depleted uranium, thorium and quantities of uranium enriched to less than 10% not falling into Category III should be protected in accordance with prudent management practice.
d Irradiated fuel should be protected as category I, II, or III nuclear material depending on the category of the fresh fuel. However, fuel which by virtue of its original fissile material content is included as category I or II before irradiation should only be reduced one category level, while the radiation level from the fuel exceeds 100 rd/h at 1 m unshielded.
e Physical security determinations will not be required for 15 g or less of plutonium, uranium-233 or high-enriched uranium, or for 1 kg or less of uranium with an enrichment between 10 and 20 pct in uranium-235.
1. Plutonium a Unirradiated b 2 kg or more Less than 2 kg but more than 500 g 500 g or less.
2. Uranium-235 c Unirradiated: b
Uranium enriched to 20 pct U 235 or more 5 kg or more Less than 5 kg but more than 1 kg 1 kg or less.
Uranium enriched to 10 pct U 235 but less than 20 pct 10 kg or more Less than 10 kg.
Uranium enriched above natural, but less than 10 pct U 235 10 kg or more.
3. Uranium-233 Unirradiated b 2 kg or more Less than 2 kg but more than 500 g 500 g or less.
(Sec. 161, as amended, Pub. L. 83-703, 68 Stat. 948 (42 U.S.C. 2201); sec. 201, as amended, Pub. L. 93-438, 88 Stat. 1243 (42 U.S.C. 5841))
[43 FR 21641, May 19, 1978. Redesignated and amended at 49 FR 47204, Dec. 3, 1984. Further redesignated at 55 FR 30450, July 26, 1990; 58 FR 13005, Mar. 9, 1993; 61 FR 35603, July 8, 1996]

Title 10 published on 2014-01-01

no entries appear in the Federal Register after this date.

Title 10 published on 2014-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR 110 after this date.

  • 2014-02-11; vol. 79 # 28 - Tuesday, February 11, 2014
    1. 79 FR 8097 - Deliberate Misconduct Rule and Hearings on Challenges to the Immediate Effectiveness of Orders
      GPO FDSys XML | Text
      NUCLEAR REGULATORY COMMISSION
      Proposed rule.
      Submit comments by May 12, 2014. Comments received after this date will be considered if it is practical to do so. However, the NRC is able to ensure consideration only of comments received on or before this date.
      10 CFR Parts 2, 30, 40, 50, 52, 60, 61, 63, 70, 71, 72, 76, 110, and 150