---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chI/part31"
level: "part"
label: "Part 31"
heading: "General Domestic Licenses for Byproduct Material"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chI-part31"
sections_count: 16
---

# Part 31 — General Domestic Licenses for Byproduct Material

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

## Sections

- [§31.1. Purpose and scope.](/cfr/10/31.1.md)
- [§31.2. Terms and conditions.](/cfr/10/31.2.md)
- [§31.3. Reserved](/cfr/10/31.3.md)
- [§31.4. Information collection requirements: OMB approval.](/cfr/10/31.4.md)
- [§31.5. Certain detecting, measuring, gauging, or controlling devices and certain devices for producing light or an ionized atmosphere. 2](/cfr/10/31.5.md)
- [§31.6. General license to install devices generally licensed in § 31.5.](/cfr/10/31.6.md)
- [§31.7. Luminous safety devices for use in aircraft.](/cfr/10/31.7.md)
- [§31.8. Americium-241 and radium-226 in the form of calibration or reference sources.](/cfr/10/31.8.md)
- [§31.9. General license to own byproduct material.](/cfr/10/31.9.md)
- [§31.10. General license for strontium 90 in ice detection devices.](/cfr/10/31.10.md)
- [§31.11. General license for use of byproduct material for certain in vitro clinical or laboratory testing.](/cfr/10/31.11.md)
- [§31.12. General license for certain items and self-luminous products containing radium-226.](/cfr/10/31.12.md)
- [§31.13-31.20. Reserved](/cfr/10/31.13-31.20.md)
- [§31.21. Maintenance of records.](/cfr/10/31.21.md)
- [§31.22. Violations.](/cfr/10/31.22.md)
- [§31.23. Criminal penalties.](/cfr/10/31.23.md)