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

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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

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.

  • 2014-07-10; vol. 79 # 132 - Thursday, July 10, 2014
    1. 79 FR 39289 - Export Controls and Physical Security Standards
      GPO FDSys XML | Text
      NUCLEAR REGULATORY COMMISSION
      Final rule.
      The final rule is effective August 11, 2014, except that the changes to § 110.44(a) and (b)(1) and appendix M to 10 CFR part 110 are effective December 31, 2014. The incorporation by reference of the material in this document is approved as of December 31, 2014.
      10 CFR Part 110

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.

  • 2014-07-10; vol. 79 # 132 - Thursday, July 10, 2014
    1. 79 FR 39289 - Export Controls and Physical Security Standards
      GPO FDSys XML | Text
      NUCLEAR REGULATORY COMMISSION
      Final rule.
      The final rule is effective August 11, 2014, except that the changes to § 110.44(a) and (b)(1) and appendix M to 10 CFR part 110 are effective December 31, 2014. The incorporation by reference of the material in this document is approved as of December 31, 2014.
      10 CFR Part 110