Miscellaneous Process Vent

{
  "id": "MLC-T-ENV-017486",
  "term": "Miscellaneous Process Vent",
  "field": "Environment",
  "definition": "Gas stream containing greater than 20 parts per million by volume organic HAP that is continuously or periodically discharged from a petroleum refining process unit meeting the criteria specified in § 63.640(a). Miscellaneous process vents include gas streams that are discharged directly to the atmosphere, gas streams that are routed to acontrol device prior to discharge to the atmosphere, or gas streams that are diverted through a product recovery device prior to control or discharge to the atmosphere. Miscellaneous process vents include vent streams from: Caustic wash accumulators, distillation tower condensers/accumulators, flash/knockout drums, reactor vessels, scrubber overheads, stripper overheads, vacuum pumps, steam ejectors, hot wells, high point bleeds, wash tower overheads, water wash accumulators, blowdown condensers/accumulators, and delayed coker vents. Miscellaneous process vents do not include: (1) Gaseous streams routed to a fuel gas system, provided that on and after January 30, 2019, any flares receiving gas from the fuel gas system are in compliance with § 63.670;",
  "references": [
    "Definition truncated. For full definition see 40 CFR 63.641 (CFR 2016)"
  ],
  "url": "https://mlchart.com/terminology/environment/miscellaneous-process-vent/"
}