---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chI/part40"
level: "part"
label: "Part 40"
heading: "Domestic Licensing of Source Material"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chI-part40"
sections_count: 54
---

# Part 40 — Domestic Licensing of Source Material

Title 10 C.F.R. — Energy › Chapter I — Nuclear Regulatory Commission

## Sections

- [§40.1. Purpose.](/cfr/10/40.1.md)
- [§40.2. Scope.](/cfr/10/40.2.md)
- [§40.2a. Coverage of inactive tailings sites.](/cfr/10/40.2a.md)
- [§40.3. License requirements.](/cfr/10/40.3.md)
- [§40.4. Definitions.](/cfr/10/40.4.md)
- [§40.5. Communications.](/cfr/10/40.5.md)
- [§40.6. Interpretations.](/cfr/10/40.6.md)
- [§40.7. Employee protection.](/cfr/10/40.7.md)
- [§40.8. Information collection requirements: OMB approval.](/cfr/10/40.8.md)
- [§40.9. Completeness and accuracy of information.](/cfr/10/40.9.md)
- [§40.10. Deliberate misconduct.](/cfr/10/40.10.md)
- [§40.11. Persons using source material under certain Department of Energy and Nuclear Regulatory Commission contracts.](/cfr/10/40.11.md)
- [§40.12. Carriers.](/cfr/10/40.12.md)
- [§40.13. Unimportant quantities of source material.](/cfr/10/40.13.md)
- [§40.14. Specific exemptions.](/cfr/10/40.14.md)
- [§40.20. Types of licenses.](/cfr/10/40.20.md)
- [§40.21. General license to receive title to source or byproduct material.](/cfr/10/40.21.md)
- [§40.22. Small quantities of source material.](/cfr/10/40.22.md)
- [§40.23. General license for carriers of transient shipments of natural uranium other than in the form of ore or ore residue.](/cfr/10/40.23.md)
- [§40.24. Reserved](/cfr/10/40.24.md)
- [§40.25. General license for use of certain industrial products or devices.](/cfr/10/40.25.md)
- [§40.26. General license for possession and storage of byproduct material as defined in this part.](/cfr/10/40.26.md)
- [§40.27. General license for custody and long-term care of residual radioactive material disposal sites.](/cfr/10/40.27.md)
- [§40.28. General license for custody and long-term care of uranium or thorium byproduct materials disposal sites.](/cfr/10/40.28.md)
- [§40.31. Application for specific licenses.](/cfr/10/40.31.md)
- [§40.32. General requirements for issuance of specific licenses.](/cfr/10/40.32.md)
- [§40.33. Issuance of a license for a uranium enrichment facility.](/cfr/10/40.33.md)
- [§40.34. Special requirements for issuance of specific licenses.](/cfr/10/40.34.md)
- [§40.35. Conditions of specific licenses issued pursuant to § 40.34.](/cfr/10/40.35.md)
- [§40.36. Financial assurance and recordkeeping for decommissioning.](/cfr/10/40.36.md)
- [§40.38. Ineligibility of certain applicants.](/cfr/10/40.38.md)
- [§40.41. Terms and conditions of licenses.](/cfr/10/40.41.md)
- [§40.42. Expiration and termination of licenses and decommissioning of sites and separate buildings or outdoor areas.](/cfr/10/40.42.md)
- [§40.43. Renewal of licenses.](/cfr/10/40.43.md)
- [§40.44. Amendment of licenses at request of licensee.](/cfr/10/40.44.md)
- [§40.45. Commission action on applications to renew or amend.](/cfr/10/40.45.md)
- [§40.46. Inalienability of licenses.](/cfr/10/40.46.md)
- [§40.51. Transfer of source or byproduct material.](/cfr/10/40.51.md)
- [§40.52. Certain items containing source material; requirements for license to apply or initially transfer.](/cfr/10/40.52.md)
- [§40.53. Conditions for licenses issued for initial transfer of certain items containing source material: Quality control, labeling, and records and reports.](/cfr/10/40.53.md)
- [§40.54. Requirements for license to initially transfer source material for use under the ‘small quantities of source material’ general license.](/cfr/10/40.54.md)
- [§40.55. Conditions of licenses to initially transfer source material for use under the ‘small quantities of source material’ general license: Quality control, labeling, safety instructions, and records and reports.](/cfr/10/40.55.md)
- [§40.56. Restrictions on the use of Australian-obligated source material.](/cfr/10/40.56.md)
- [§40.60. Reporting requirements.](/cfr/10/40.60.md)
- [§40.61. Records.](/cfr/10/40.61.md)
- [§40.62. Inspections.](/cfr/10/40.62.md)
- [§40.63. Tests.](/cfr/10/40.63.md)
- [§40.64. Reports.](/cfr/10/40.64.md)
- [§40.65. Effluent monitoring reporting requirements.](/cfr/10/40.65.md)
- [§40.66. Requirements for advance notice of export shipments of natural uranium.](/cfr/10/40.66.md)
- [§40.67. Requirement for advance notice for importation of natural uranium from countries that are not party to the Convention on the Physical Protection of Nuclear Material.](/cfr/10/40.67.md)
- [§40.71. Modification and revocation of licenses.](/cfr/10/40.71.md)
- [§40.81. Violations.](/cfr/10/40.81.md)
- [§40.82. Criminal penalties.](/cfr/10/40.82.md)