10 CFR § 140.5 - Communications.

---
identifier: "/us/cfr/t10/s140.5"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 140.5 - Communications."
title_number: 10
title_name: "Energy"
section_number: "140.5"
section_name: "Communications."
chapter_name: "NUCLEAR REGULATORY COMMISSION"
part_number: "140"
part_name: "FINANCIAL PROTECTION REQUIREMENTS AND INDEMNITY AGREEMENTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Atomic Energy Act of 1954, secs. 161, 170, 223, 234 (42 U.S.C. 2201, 2210, 2273, 2282); Energy Reorganization Act of 1974, secs. 201, 202 (42 U.S.C. 5841, 5842); 44 U.S.C. 3504 note."
regulatory_source: "25 FR 2944, Apr. 7, 1960, unless otherwise noted."
cfr_part: "140"
---


# 140.5 Communications.

Except where otherwise specified, all communications and reports concerning the regulations in this part and applications filed under them should be sent by mail addressed to: ATTN: Document Control Desk, Director, Office of Nuclear Reactor Regulation, or Director, Office of Nuclear Material Safety and Safeguards, as appropriate, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; by hand delivery to the NRC's offices at 11555 Rockville Pike, Rockville, Maryland; or, where practicable, by electronic submission, for example, via Electronic Information Exchange, or CD-ROM. Electronic submissions must be made in a manner that enables the NRC to receive, read, authenticate, distribute, and archive the submission, and process and retrieve it a single page at a time. Detailed guidance on making electronic submissions can be obtained by visiting the NRC's Web site at *http://www.nrc.gov/site-help/e-submittals.html;* by e-mail to *[email protected];* or by writing the Office of the Chief Information Officer, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001. The guidance discusses, among other topics, the formats the NRC can accept, the use of electronic signatures, and the treatment of nonpublic information.

[73 FR 5726, Jan. 31, 2008, as amended at 74 FR 62686, Dec. 1, 2009; 79 FR 75742, Dec. 19, 2014; 80 FR 74982, Dec. 1, 2015; 84 FR 65646, Nov. 29, 2019]