46 C.F.R. § 108.187 Ventilation for brush type electric motors in classified spaces.
Title 46 - Shipping
Ventilation for brush type electric motors in classified locations must meet N.F.P.A. 496–1974 “Standard for Purged and Pressurized Enclosures for Electrical Equipment in Hazardous Locations”, except audible and visual alarms may be used if shutting down the motors may cause unsafe conditions.
Title 46: Shipping
PART 108—DESIGN AND EQUIPMENT
Subpart B—Construction and Arrangement
Ventilation
§ 108.187 Ventilation for brush type electric motors in classified spaces.
