10 CFR § 34.21 - Limits on external radiation levels from storage containers and source changers.
---identifier: "/us/cfr/t10/s34.21"source: "ecfr"legal_status: "authoritative_unofficial"title: "10 CFR § 34.21 - Limits on external radiation levels from storage containers and source changers."title_number: 10title_name: "Energy"section_number: "34.21"section_name: "Limits on external radiation levels from storage containers and source changers."chapter_name: "NUCLEAR REGULATORY COMMISSION"part_number: "34"part_name: "LICENSES FOR INDUSTRIAL RADIOGRAPHY AND RADIATION SAFETY REQUIREMENTS FOR INDUSTRIAL RADIOGRAPHIC OPERATIONS"positive_law: falsecurrency: "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, 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: "62 FR 28963, May 28, 1997, unless otherwise noted."cfr_part: "34"---
Identifier
/us/cfr/t10/s34.21
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Nuclear Regulatory Commission
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, 58... 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.
# 34.21 Limits on external radiation levels from storage containers and source changers.The maximum exposure rate limits for storage containers and source changers are 2 millisieverts (200 millirem) per hour at any exterior surface, and 0.1 millisieverts (10 millirem) per hour at 1 meter from any exterior surface with the sealed source in the shielded position.