---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chI/part55"
level: "part"
label: "Part 55"
heading: "Operators' Licenses"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chI-part55"
sections_count: 33
---

# Part 55 — Operators' Licenses

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

## Contents

- [Subpart A — General Provisions](/cfr/10/chI-part55-subpartA.md)
- [Subpart B — Exemptions](/cfr/10/chI-part55-subpartB.md)
- [Subpart C — Medical Requirements](/cfr/10/chI-part55-subpartC.md)
- [Subpart D — Applications](/cfr/10/chI-part55-subpartD.md)
- [Subpart E — Written Examinations and Operating Tests](/cfr/10/chI-part55-subpartE.md)
- [Subpart F — Licenses](/cfr/10/chI-part55-subpartF.md)
- [Subpart G — Modification and Revocation of Licenses](/cfr/10/chI-part55-subpartG.md)
- [Subpart H — Enforcement](/cfr/10/chI-part55-subpartH.md)