StacksVerified U.S. regulatory reference

49 CFR §173.421

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A Class 7 (radioactive) material with an activity per package which does not exceed the limited quantity package limits specified in Table 4 in § 173.425, and its packaging, are excepted from requirements in this subchapter for specification packaging, marking (except for the UN identification number marking requirement described in § 173.422(a)), labeling, and if not a hazardous substance or hazardous waste, shipping papers, and the requirements of this subpart if:
  1. (a)Each package meets the general design requirements of § 173.410;
  2. (b)The radiation level at any point on the external surface of the package does not exceed 0.005 mSv/h (0.5 mrem/h);
  3. (c)The non-fixed contamination on the external surface of the package does not exceed the limits specified in § 173.443(a);
  4. (d)The outside of the inner packaging or, if there is no inner packaging, the outside of the packaging itself bears the marking “Radioactive;”
  5. (e)The package does not contain fissile material unless excepted by § 173.453; and
  6. (f)The material is otherwise prepared for shipment as specified in accordance with § 173.422.