---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chI/part39"
level: "part"
label: "Part 39"
heading: "Licenses and Radiation Safety Requirements for Well Logging"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chI-part39"
sections_count: 33
---

# Part 39 — Licenses and Radiation Safety Requirements for Well Logging

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

## Contents

- [Subpart A — General Provisions](/cfr/10/chI-part39-subpartA.md)
- [Subpart B — Specific Licensing Requirements](/cfr/10/chI-part39-subpartB.md)
- [Subpart C — Equipment](/cfr/10/chI-part39-subpartC.md)
- [Subpart D — Radiation Safety Requirements](/cfr/10/chI-part39-subpartD.md)
- [Subpart E — Security, Records, Notifications](/cfr/10/chI-part39-subpartE.md)
- [Subpart F — Exemptions](/cfr/10/chI-part39-subpartF.md)
- [Subpart G — Enforcement](/cfr/10/chI-part39-subpartG.md)