Sweep Gas

{
  "id": "MLC-T-ENV-027480",
  "term": "Sweep Gas",
  "field": "Environment",
  "definition": "1. Gas introduced in a flare gas header system to maintain a constant flow of gas to prevent oxygen buildup in the flare header. For flares with no water seals, sweep gas also performs the function of preventing oxygen infiltration (backflow) into the flare tip.\n\n2. Natural gas with low concentrations of hydrogen sulfide (H2S) and/or carbon dioxide (CO2) that does not require (or has already had) acid gas treatment to meet pipeline corrosion-prevention specifications for transmission and distribution.",
  "references": [
    "40 CFR 60.101a (CFR 2013)",
    "40 CFR 98.6 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/sweep-gas/"
}