---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chX/part1045"
level: "part"
label: "Part 1045"
heading: "Nuclear Classification and Declassification"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chX-part1045"
sections_count: 45
---

# Part 1045 — Nuclear Classification and Declassification

Title 10 C.F.R. — Energy › Chapter X — Department of Energy (general Provisions)

## Contents

- [Subpart A — Introduction](/cfr/10/chX-part1045-subpartA.md)
- [Subpart B — Management of Restricted Data (RD), Formerly Restricted Data (FRD), and Transclassified Foreign Nuclear Information (TFNI) Classification Programs](/cfr/10/chX-part1045-subpartB.md)
- [Subpart C — Determining if Information is RD, FRD, or TFNI](/cfr/10/chX-part1045-subpartC.md)
- [Subpart D — Classifying and Declassifying Matter Containing RD, FRD, or TFNI](/cfr/10/chX-part1045-subpartD.md)
- [Subpart E — Government-Wide Procedures for Handling Freedom of Information Act (FOIA) and Mandatory Declassification Review (MDR) Requests for Matter Marked as or Potentially Containing RD, FRD, or TFNI](/cfr/10/chX-part1045-subpartE.md)
- [Subpart F — DOE-Specific Procedures for MDR Requests](/cfr/10/chX-part1045-subpartF.md)