{"operation":"document","citation":"49 CFR 193.2431","title":"Vents.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":null,"effective_on":"1999-10-01","summary":"(a) Hazardous fluids may not be relieved into the atmosphere of a building or other confined space.\n\n(b) Boiloff vents for hazardous fluids may not draw in air during operation.\n\n(c) Venting of natural gas/vapor under operational control which could produce a hazardous gas atmosphere must be directe","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-193-2431.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-193-2431.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-193-2431","source_url":"https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2431","body":"(a) Hazardous fluids may not be relieved into the atmosphere of a building or other confined space.\n\n(b) Boiloff vents for hazardous fluids may not draw in air during operation.\n\n(c) Venting of natural gas/vapor under operational control which could produce a hazardous gas atmosphere must be directed to a flare stack or heat exchanger in order to raise its temperature to achieve positive buoyancy and safe venting.\n\n[45 FR 9203, Feb. 11, 1980, as amended by Amdt. 193-2, 45 FR 70404, Oct. 23, 1980]","truncated":false,"body_characters":501}