US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 111 — ELECTRIC SYSTEMS—GENERAL REQUIREMENTSSubpart 111.105—Hazardous Locations111.105-2146 C.F.R. § 111.105-21Ventilation.Last amended: 2016Year: 2026Length: 33 wordsOfficial source Cite as 46 C.F.R. § 111.105-21 (2026)A ventilation duct which ventilates a hazardous location has the classification of that location. Each fan for ventilation of a hazardous location must be nonsparking. [CGD 94-108, 61 FR 28285, June 4, 1996]Previous46 C.F.R. § 111.105-19Next46 C.F.R. § 111.105-27