US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter I — PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 193 — LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDSSubpart C — Design193.216749 C.F.R. § 193.2167Covered systems.Last amended: 2016Year: 2026Length: 32 wordsOfficial source Cite as 49 C.F.R. § 193.2167 (2026)A covered impounding system is prohibited except for concrete wall designed tanks where the concrete wall is an outer wall serving as a dike. [Amdt. 193-17, 65 FR 10959, Mar. 1, 2000]Previous49 C.F.R. § 193.2161Next49 C.F.R. § 193.2173