CFR›Title 10›Chapter I›Part 20›Subpart G ContainsSections 20.1601–20.1602CorpusDaily eCFRDisplayed edition2026-05-12Last updated2026-05-12 Subpart G—Control of Exposure From External Sources in Restricted Areas Sections 20.1601 § 20.1601 Control of access to high radiation areas. 20.1602 § 20.1602 Control of access to very high radiation areas. Source56 FR 23398, May 21, 1991, unless otherwise noted. Previous F Subpart F—Surveys and Monitoring Next H Subpart H—Respiratory Protection and Controls To Restrict Internal Exposure in Restricted Areas