Residual fuel oil

{
  "id": "MLC-T-ENE-001988",
  "term": "Residual fuel oil",
  "field": "Energy",
  "definition": "A general classification for the heavier oils, known as No. 5 and No. 6 fuel oils, that remain after the distillate fuel oils and lighter hydrocarbons are distilled away in refinery operations. It conforms to ASTM Specifications D 396 and D 975and Federal Specification VV-F-815C. No. 5, a residual fuel oil of medium viscosity, is also known as Navy Special and is defined in Military Specification MIL-F-859E, including Amendment 2 (NATO Symbol F-770). It is used in steam-powered vessels in government service and inshore powerplants. No. 6 fuel oil includes Bunker C fuel oil and is used for the production of electric power, space heating, vessel bunkering, and various industrial purposes.",
  "subject": "Petroleum",
  "references": [
    "EIA Glossary"
  ],
  "url": "https://mlchart.com/terminology/energy/residual-fuel-oil/"
}