10 CFR § 20.1602 - Control of access to very high radiation areas.

---
identifier: "/us/cfr/t10/s20.1602"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 20.1602 - Control of access to very high radiation areas."
title_number: 10
title_name: "Energy"
section_number: "20.1602"
section_name: "Control of access to very high radiation areas."
chapter_name: "NUCLEAR REGULATORY COMMISSION"
part_number: "20"
part_name: "STANDARDS FOR PROTECTION AGAINST RADIATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Atomic Energy Act of 1954, secs. 11, 53, 63, 65, 81, 103, 104, 161, 170H, 182, 186, 223, 234, 274, 1701 (42 U.S.C. 2014, 2073, 2093, 2095, 2111, 2133, 2134, 2201, 2210h, 2232, 2236, 2273, 2282, 2021, 2297f); Energy Reorganization Act of 1974, secs. 201, 202 (42 U.S.C. 5841, 5842); Low-Level Radioactive Waste Policy Amendments Act of 1985, sec. 2 (42 U.S.C. 2021b); 44 U.S.C. 3504 note."
cfr_part: "20"
---


# 20.1602 Control of access to very high radiation areas.

In addition to the requirements in § 20.1601, the licensee shall institute additional measures to ensure that an individual is not able to gain unauthorized or inadvertent access to areas in which radiation levels could be encountered at 500 rads (5 grays) or more in 1 hour at 1 meter from a radiation source or any surface through which the radiation penetrates.