Vapor-tight transport vehicle

{
  "id": "MLC-T-ENV-029511",
  "term": "Vapor-tight transport vehicle",
  "field": "Environment",
  "term_source": "Vapor-Tight Transport Vehicle",
  "definition": "1. Transport vehicle that has been demonstrated to be vapor-tight. To be considered vapor-tight, a transport vehicle equipped with vapor collection equipment must undergo a pressure change of no more than 250 pascals (1 inch of water) within 5 minutes after it is pressurized to 4,500 pascals (18 inches of water). This capability must be demonstrated annually using the procedures specified in EPA Method 27 of 40 CFR part 60, appendix A. For all other transport vehicles, vapor tightness is demonstrated by performing the U.S. DOT pressure test procedures for tank cars and cargo tanks.\n\n2. Transport vehicle that has been demonstrated to be vapor-tight. To be considered vapor-tight, a transport vehicle equipped with vapor collection equipment must undergo a pressure change of no more than 250 pascals (1 inch of water) within 5 minutes after it is pressurized to 4,500 pascals (18 inches of water). This capability must be demonstrated annually using the procedures specified in Method 27 of 40 CFR part 60, appendix A-8. For all other transport vehicles, vapor tightness is demonstrated by performing the U.S. DOT pressure test procedures for tank cars and cargo tanks.",
  "subject": "Built environments",
  "references": [
    "40 CFR 63.2406 (CFR 2013)",
    "85 FR 40740; 40 CFR 63.2406 (CFR 2021)"
  ],
  "url": "https://mlchart.com/terminology/environment/vapor-tight-transport-vehicle/"
}