Definitions, Sources and Explanatory Notes

 Category:   Petroleum Refining & Processing
 Topic:   Weekly Refiner & Blender Net Production


Key Terms Definition
Blending Plant A facility which has no refining capability but is either capable of producing finished motor gasoline through mechanical blending or blends oxygenates with motor gasoline.
Barrel A unit of volume equal to 42 U.S. gallons.
Conventional Blendstock for Oxygenate Blending (CBOB) Motor gasoline blending components intended for blending with oxygenates to produce finished conventional motor gasoline.
Conventional Gasoline Finished motor gasoline not included in the oxygenated or reformulated gasoline categories. Excludes reformulated gasoline blendstock for oxygenate blending (RBOB) as well as other blendstock.
Conventional Gasoline, Ed55 and Lower Finished conventional motor gasoline blended with a maximum of 55 volume percent denatured fuel ethanol.
Conventional Gasoline, Greater than Ed55 Finished conventional motor gasoline blended with denatured fuel ethanol where the volume percent of denatured fuel ethanol exceeds 55%.
Distillate Fuel Oil A general classification for one of the petroleum fractions produced in conventional distillation operations. It includes diesel fuels and fuel oils. Products known as No. 1, No. 2, and No. 4 diesel fuel are used in on-highway diesel engines, such as those in trucks and automobiles, as well as off-highway engines, such as those in railroad locomotives and agricultural machinery. Products known as No. 1, No. 2, and No. 4 fuel oils are used primarily for space heating and electric power generation.
Finished Motor Gasoline A complex mixture of relatively volatile hydrocarbons with or without small quantities of additives, blended to form a fuel suitable for use in spark-ignition engines. Motor gasoline, as defined in ASTM Specification D 4814 or Federal Specification VV-G-1690C, is characterized as having a boiling range of 122 to 158 degrees Fahrenheit at the 10 percent recovery point to 365 to 374 degrees Fahrenheit at the 90 percent recovery point. Motor Gasoline includes conventional gasoline; all types of oxygenated gasoline, including gasohol; and reformulated gasoline, but excludes aviation gasoline. Note: Volumetric data on blending components, such as oxygenates, are not counted in data on finished motor gasoline until the blending components are blended into the gasoline.
Finished Motor Gasoline Adjustment Adjustment to correct for the imbalance created by the blending of fuel ethanol and motor gasoline blending components.
Kerosene-Type Jet Fuel A kerosene-based product having a maximum distillation temperature of 400 degrees Fahrenheit at the 10-percent recovery point and a final maximum boiling point of 572 degrees Fahrenheit and meeting ASTM Specification D 1655 and Military Specifications MIL-T-5624P and MIL-T-83133D (Grades JP-5 and JP-8). It is used for commercial and military turbojet and turboprop aircraft engines.

  • Commercial
  • - Kerosene-type jet fuel intended for use in commercial aircraft.
  • Military
  • - Kerosene-type jet fuel intended for use in military aircraft.
    Petroleum Administration for Defense (PAD) Districts Geographic aggregations of the 50 States and the District of Columbia into five districts by the Petroleum Administration for Defense in 1950. These districts were originally defined during World War II for purposes of administering oil allocation. Description and maps of PAD Districts and Refining Districts.
    Ppm Parts per million.
    Production Petroleum products produced at a refinery, natural gas processing plant, or blending plant. Published production equals production minus input. Negative production will occur when the amount of a product produced during the reporting period is less than the amount of that same product that is reprocessed (input) or reclassified to become another product during the same reporting period.
    Propane (C3H8) A normally gaseous straight-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of - 43.67 degrees Fahrenheit. It is extracted from natural gas or refinery gas streams. It includes all products designated in ASTM Specification D1835 and Gas Processors Association Specifications for commercial propane and HD-5 propane.
    Propylene (C3H6) An olefinic hydrocarbon recovered from refinery processes or petrochemical processes.
    Refinery An installation that manufactures finished petroleum products from crude oil, unfinished oils, natural gas liquids, other hydrocarbons, and oxygenates.
    Reformulated (Blended with Alcohol) Reformulated gasoline blended with an alcohol component (e.g. fuel ethanol) at a terminal or refinery to raise the oxygen content.
    Reformulated Gasoline (RFG) Finished gasoline formulated for use in motor vehicles, the composition and properties of which meet the requirements of the reformulated gasoline regulations promulgated by the U.S. Environmental Protection Agency under Section 211(k) of the Clean Air Act. It includes gasoline produced to meet or exceed emissions performance and benzene content standards of federal-program reformulated gasoline even though the gasoline may not meet all of the composition requirements (e.g. oxygen content) of federal-program reformulated gasoline. Reformulated gasoline excludes Reformulated Blendstock for Oxygenate Blending (RBOB) and Gasoline Treated as Blendstock (GTAB). Historical reformulated gasoline statistics included Oxygenated Fuels Program Reformulated Gasoline (OPRG).
    Residual Fuel Oil 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 D396 and D975 and 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.
    Sulfur A yellowish nonmetallic element, sometimes known as "brimstone." It is present at various levels of concentration in many fossil fuels.

    For definitions of related energy terms, refer to the EIA Energy Glossary.


  • Energy Information Administration, Form EIA-800, "Weekly Refinery Report".
  • Energy Information Administration, Form EIA-805, "Weekly Terminal Blenders Report".
  • EIA Forms & Instructions .
  • Explanatory Notes and Detailed Methods Report .

  •   Explanatory Notes

  • Finished motor gasoline production (and product supplied) includes a weekly adjustment applied only to the U.S. total to correct for the imbalance created by blending of fuel ethanol and motor gasoline blending components. From 1993 to June 4, 2010, this adjustment was estimated from the latest monthly data and allocated to formulation and PAD District production data.
  • Reformulated and conventional gasoline excludes adjustments for fuel ethanol and motor gasoline blending components. Historical data prior to June 4, 2010 includes the adjustment allocated by PAD District formulation.
  • The finished motor gasoline adjustment is to correct for the imbalance created by the blending of fuel ethanol and motor gasoline blending components. For details see Explanatory Notes and Detailed Methods Report.
  • Commercial and military kerosene jet fuel production is only collected from refiners and may not total to total kerosene jet fuel production.
  • Propane/propylene includes production from natural gas plants.
  • Data may not add to total due to independent rounding.