Flare purge gas

{
  "id": "MLC-T-ENV-011192",
  "term": "Flare purge gas",
  "field": "Environment",
  "term_source": "Flare Purge Gas",
  "definition": "1. Gas introduced between a flare header's water seal and the flare tip to prevent oxygen infiltration (backflow) into the flare tip. For a flare with no water seal, the function of flare purge gas is performed by flare sweep gas and, therefore, by definition, such a flare has no flare purge gas.\n\n2. Gas introduced between a flare header's water seal and the flare tip to prevent oxygen infiltration (backflow) into the flare tip or for other safety reasons. For a flare with no water seal, the function of flare purge gas is performed by flare sweep gas and, therefore, by definition, such a flare has no flare purge gas.",
  "subject": "Chemical substances",
  "references": [
    "40 CFR 63.641 (CFR 2016)",
    "40 CFR 63.641 (CFR 2019)"
  ],
  "url": "https://mlchart.com/terminology/environment/flare-purge-gas/"
}