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Nuclear Security Regulations

Version of the schedule from 2006-03-22 to 2006-11-13:


SCHEDULE(Section 1)

CATEGORY I, II AND III NUCLEAR MATERIAL

Column 1Column 2Column 3Column 4Column 5
ItemNuclear SubstanceFormQuantity

(Category I)Footnote for CATEGORY I, II AND III NUCLEAR MATERIAL 1

Quantity

(Category II)Footnote for CATEGORY I, II AND III NUCLEAR MATERIAL 1

Quantity

(Category III)Footnote for CATEGORY I, II AND III NUCLEAR MATERIAL 1

1PlutoniumFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 2UnirradiatedFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 32 kg or moreLess than 2 kg, but more than 500 g500 g or less, but more than 15 g
2Uranium 235UnirradiatedFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 3 — uranium enriched to 20% 235U or more5 kg or moreLess than 5 kg, but more than 1 kg1 kg or less, but more than 15 g
3Uranium 235UnirradiatedFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 3 — uranium enriched to 10% 235U or more, but less than 20% 235UN/A10 kg or moreLess than 10 kg, but more than 1 kg
4Uranium 235UnirradiatedFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 3 — uranium enriched above natural, but less than 10% 235UN/AN/A10 kg or more
5Uranium 233UnirradiatedFootnote for CATEGORY I, II AND III NUCLEAR MATERIAL 32 kg or moreLess than 2 kg, but more than 500 g500 g or less, but more than 15 g
6Fuel consisting of depleted or natural uranium, thorium or low-enriched fuel (less than 10% fissile content)Footnote for CATEGORY I, II AND III NUCLEAR MATERIAL 4IrradiatedN/AMore than 500 g of plutonium500 g or less, but more than 15 g of plutonium
  • Return to footnote 1The quantities listed refer to the aggregate of each kind of nuclear substance located at a facility, excluding the following (which are considered separate quantities):

    • (a) any quantity of the nuclear substance that is not within 1 000 m of another quantity of the nuclear substance; and

    • (b) any quantity of the nuclear substance that is located in a locked building or a structure offering similar resistance to unauthorized entry.

  • Return to footnote 2All plutonium except that with isotopic concentration exceeding 80% in plutonium 238.

  • Return to footnote 3Material not irradiated in a reactor or material irradiated in a reactor but with a radiation level equal to or less than 1 Gy/h at 1 m unshielded.

  • Return to footnote 4Other fuel that by virtue of its original fissile 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 at 1 m unshielded.

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