{"data":{"id":"us/46-cfr-153.312","jurisdiction":"us","citation":"46 CFR 153.312","heading":"Ventilation system standards.","body":"A cargo handling space ventilation system must meet the following:\n(a) A ventilation system exhaust duct must discharge no less than 10 m (approx. 32.8 ft) from openings into or ventilation intakes for, accommodation or service spaces.\n(b) A ventilation system must not recycle vapors from ventilation discharges.\n(c) Except for the space served by the ventilation duct, a ventilation duct must not pass through a machinery room, an accommodation space, or working spaces.\n(d) A ventilation system must be operable from outside the space it ventilates.\n(e) A ventilation system must be sized to change the air in the ventilated space at least 30 times per hour.\n(f) A ventilation system must not allow air to stagnate in any part of a ventilated space.\n(g) A ventilation system must be able to exhaust air from both above and below the deck plates of a ventilated space.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES","PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS","Subpart B—Design and Equipment"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"e4d8b551420552f35a6d39084c3a73b3d918794ef9312fedb4b97ee64d395efc","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-153.310","next":"us/46-cfr-153.314"},"notice":"GroundRules: Original legal text. Not legal advice."}