CFR›Title 10›Chapter I›Part 20›10 CFR Part 20 Subpart J Citation10 CFR Part 20 Subpart JContainsSections § 20.1901–§ 20.1906CorpusDaily eCFRDisplayed edition2026-08-06Last updated2026-08-06 Subpart J—Precautionary Procedures Sections § 20.1901 § 20.1901 Caution signs. § 20.1902 § 20.1902 Posting requirements. § 20.1903 § 20.1903 Exceptions to posting requirements. § 20.1904 § 20.1904 Labeling containers. § 20.1905 § 20.1905 Exemptions to labeling requirements. § 20.1906 § 20.1906 Procedures for receiving and opening packages. AuthorityAtomic Energy Act of 1954, secs. 11, 53, 63, 65, 81, 103, 104, 161, 170H, 182, 186, 223, 234, 274, 1701 (42 U.S.C. 2014, 2073, 2093, 2095, 2111, 2133, 2134, 2201, 2210h, 2232, 2236, 2273, 2282, 2021, 2297f); Energy Reorganization Act of 1974, secs. 201, 202 (42 U.S.C. 5841, 5842); Low-Level Radioactive Waste Policy Amendments Act of 1985, sec. 2 (42 U.S.C. 2021b); 44 U.S.C. 3504 note.Source56 FR 23401, May 21, 1991, unless otherwise noted.