---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chI/part51"
level: "part"
label: "Part 51"
heading: "Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chI-part51"
sections_count: 91
---

# Part 51 — Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions

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

## Sections

- [§51.1. Scope.](/cfr/10/51.1.md)
- [§51.2. Subparts.](/cfr/10/51.2.md)
- [§51.3. Resolution of conflict.](/cfr/10/51.3.md)
- [§51.4. Definitions.](/cfr/10/51.4.md)
- [§51.5. Interpretations.](/cfr/10/51.5.md)
- [§51.6. Specific exemptions.](/cfr/10/51.6.md)

## Contents

- [Subpart A — National Environmental Policy Act—Regulations Implementing Section 102(2)](/cfr/10/chI-part51-subpartA.md)
- [Subpart B — Subpart B [Reserved]](/cfr/10/chI-part51-subpartB.md)