---
kind: "section"
citation: "10 C.F.R. § 31.8"
title: "10"
number: "31.8"
heading: "Americium-241 and radium-226 in the form of calibration or reference sources."
url: "https://uscodex.org/cfr/10/31.8"
---

# §31.8. Americium-241 and radium-226 in the form of calibration or reference sources.

- (a) A general license is issued to those persons listed in this section to own, receive, acquire, possess, use, and transfer, in accordance with the provisions of paragraphs [(b)](#b) and [(c)](#c) of this section, americium-241 or radium-226 in the form of calibration or reference sources:
  - (1) Any person in a non-Agreement State who holds a specific license issued under this chapter which authorizes receipt, possession, use, and transfer of byproduct material, source material, or special nuclear material; and
  - (2) Any Government agency, as defined in [§ 30.4](/cfr/10/30.4.md) of this chapter, which holds a specific license issued under this chapter which authorizes it to receive, possess, use, and transfer byproduct material, source material, or special nuclear material.
- (b) The general license in [paragraph (a)](#a) of this section applies only to calibration or reference sources which have been manufactured or initially transferred in accordance with the specifications contained in a specific license issued under [§ 32.57](/cfr/10/32.57.md) of this chapter or in accordance with the specifications contained in a specific license issued to the manufacturer by an Agreement State which authorizes manufacture of the sources for distribution to persons generally licensed by the Agreement State, or in accordance with a specific license issued by a State with comparable provisions to [§ 32.57](/cfr/10/32.57.md).
- (c) The general license in [paragraph (a)](#a) of this section is subject to the provisions of §§ [30.14(d)](/cfr/10/30.14.md?p=d), [30.34 (a) to (e)](/cfr/10/30.34.md?p=a..e), and [30.50 to 30.63](/cfr/10/30.50..30.63.md) of this chapter, and to the provisions of parts [19](/cfr/10/part19.md), [20](/cfr/10/part20.md), and 21, of this chapter. In addition, persons who own, receive, acquire, possess, use, and transfer one or more calibration or reference sources under this general license:
  - (1) Shall not possess at any one time, at any one location of storage or use, more than 0.185 megabecquerel (5 microcuries) of americium-241 or 0.185 megabecquerel (5 microcuries) of radium-226 in such sources;
  - (2) Shall not receive, possess, use, or transfer a source unless the source, or the storage container, bears a label which includes the following statement or a substantially similar statement which contains the information called for in the following statement: 1
  - (3) Shall not transfer, abandon, or dispose of a source except by transfer to a person authorized by a license issued under this chapter or by an Agreement State to receive the source.
  - (4) Shall store a source, except when the source is being used, in a closed container adequately designed and constructed to contain americium-241 or radium-226 which might otherwise escape during storage.
  - (5) Shall not use a source for any purpose other than the calibration of radiation detectors or the standardization of other sources.
- (d) This general license does not authorize the manufacture or import of calibration or reference sources containing americium-241 or radium-226.
- (e) This general license does not authorize the export of calibration or reference sources containing americium-241 or radium-226.

## Notes

### Amendments

[72 FR 55927, Oct. 1, 2007]

### Authority

Authority: Atomic Energy Act of 1954, secs. 81, 161, 183, 223, 234, 274 (42 U.S.C. 2111, 2201, 2233, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 202, 206 (42 U.S.C. 5841, 5842, 5846); 44 U.S.C. 3504 note.

### Amendments

[72 FR 55927, Oct. 1, 2007]