Block-and-bleed

{
  "id": "MLC-T-OAG-000383",
  "term": "Block-and-bleed",
  "field": "Oil and gas",
  "definition": "A valve configuration that isolates a section of pipeline or equipment by closing two inline block valves and then opening a third valve between them to vent or drain any trapped fluid. This arrangement provides a verifiable zero-energy state for maintenance or repair operations. It is a standard safety procedure for isolating hazardous fluids or high-pressure systems.",
  "subject": "Production",
  "url": "https://mlchart.com/terminology/oil-and-gas/block-and-bleed/"
}