CFR›Title 40›Chapter I›Part 197›Subpart B›Subject Group Individual-Protection Standard ContainsSections 197.20–197.21CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 197.20 § 197.20 What standard must DOE meet? 197.21 § 197.21 Who is the reasonably maximally exposed individual? Previous Human-Intrusion Standard Human-Intrusion Standard