CFR›Title 46›Chapter I›Part 154›Subpart C›Subject Group Secondary Barrier ContainsSections 154.459–154.460CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Sections 154.459 § 154.459 General. 154.460 § 154.460 Design criteria. Previous Safety Equipment Safety Equipment Next Semi-Membrane Tanks Semi-Membrane Tanks