46 CFR §185.352
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The mechanical exhaust for the ventilation of a gasoline machinery space, required by § 182.460(a)(1)(ii) of this chapter, must be operated prior to starting gasoline engines for the time sufficient to insure at least one complete change of air in the space served.