46 CFR § 154.1200 - Mechanical ventilation system: General.
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§ 154.1200 Mechanical ventilation system: General.
(a) Each cargo compressor room, pump room, gas-dangerous cargo control station, and space that contains cargo handling equipment must have a fixed, exhaust-type mechanical ventilation system.
(b) The following must have a supply-type mechanical ventilation system:
(1) Each space that contains electric motors for cargo handling equipment.
(2) Each gas-safe cargo control station in the cargo area.
(3) Each gas-safe space in the cargo area.
(4) Each space that contains inert gas generators, except main machinery spaces.