10 CFR § 35.2652 - Records of surveys of therapeutic treatment units.

---
identifier: "/us/cfr/t10/s35.2652"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 35.2652 - Records of surveys of therapeutic treatment units."
title_number: 10
title_name: "Energy"
section_number: "35.2652"
section_name: "Records of surveys of therapeutic treatment units."
chapter_name: "NUCLEAR REGULATORY COMMISSION"
part_number: "35"
part_name: "MEDICAL USE OF BYPRODUCT MATERIAL"
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. 81, 161, 181, 182, 183, 223, 234, 274 (42 U.S.C. 2111, 2201, 2231, 2232, 2233, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 206 (42 U.S.C. 5841, 5846); 44 U.S.C. 3504 note."
regulatory_source: "67 FR 20370, Apr. 24, 2002, unless otherwise noted."
cfr_part: "35"
---


# 35.2652 Records of surveys of therapeutic treatment units.

(a) A licensee shall maintain a record of radiation surveys of treatment units made in accordance with § 35.652 for the duration of use of the unit.

(b) The record must include—

(1) The date of the measurements;

(2) The manufacturer's name, model number and serial number of the treatment unit, source, and instrument used to measure radiation levels;

(3) Each dose rate measured around the source while the unit is in the off position and the average of all measurements; and

(4) The signature of the individual who performed the test.