10 CFR § 36.37 - Power failures.

---
identifier: "/us/cfr/t10/s36.37"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 36.37 - Power failures."
title_number: 10
title_name: "Energy"
section_number: "36.37"
section_name: "Power failures."
chapter_name: "NUCLEAR REGULATORY COMMISSION"
part_number: "36"
part_name: "LICENSES AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS"
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. 81, 161, 181, 182, 183, 223, 234, 274 (42 U.S.C. 2111, 2112, 2201, 2231, 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: "58 FR 7728, Feb. 9, 1993, unless otherwise noted."
cfr_part: "36"
---


# 36.37 Power failures.

(a) If electrical power at a panoramic irradiator is lost for longer than 10 seconds, the sources must automatically return to the shielded position.

(b) The lock on the door of the radiation room of a panoramic irradiator may not be deactivated by a power failure.

(c) During a power failure, the area of any irradiator where sources are located may be entered only when using an operable and calibrated radiation survey meter.