Tesoro Anacortes Refinery

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Refineries in Washington State

Tesoro Refineries

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Summary Information

  • Ownership: Tesoro
  • Website: http://www.tsocorp.com/
  • Location: About 70 miles north of Seattle on the Puget Sound
  • Capacity: 6.0 million tons/annum & 120,000 bbl/day
  • Nelson Complexity:

Refining Units

  • CDU - 120,000 bbl/day
  • VDU - 47,000 bbl/day
  • FCC - 55,000 bbl/day
  • Solvent Deasphalting - 30,000 bbl/day
  • Catalytic Reformer - 26,000 bbl/day

Terminal Capacity

  • Crude Oil:
  • Refined Products:

Crude Supply

  • It receives crude feedstock via pipeline from Canada and by tanker from Alaska and foreign sources.
  • It is currently receiving a very small amount of oil from the Bakken. Tesoro plans to increase this to 30,000 barrels per day following an investment in rail transportation capabilities

Products Produced

  • gasoline, jet fuel and diesel, liquefied petroleum gas and asphalt

Ongoing Projects

  • A naphtha isomerization project, and a mixed xylenes project are under construction

Other Information

  • At approximately 12:30 a.m. Pacific time April 2nd, 2010, a fire occurred at the Tesoro Anacortes refinery. The incident was on a small section of the refinery following minor, routine maintenance.
  • The fire was contained at around 2 a.m
  • 7 people were killed in the incident.


  • 2010 - A heat exchanger in the refinery's Naphtha Hydrotreater unit ruptured, causing an explosion and fire that fatally injured seven employees
  • 2012 - Tesoro Corporation Closes the Sale of the Rail Unloading Facility to Tesoro Logistics
  • 2013 - Tesoro announces the construction of a new rail unloading terminal
  • 2014 - New Xylene project

Relevant Links

  1. Refinery Webpage
  2. NPRA United States Refining and Storage Capacity Report
  3. Tesoro Anacortes Refinery Incident Update
  4. Tesoro Corporation Announces Plans to Supply Bakken Crude Oil from North Dakota to its Anacortes, Washington Refinery
  5. Tesoro Releases TOP Report on 2010 Incident at Anacortes Refinery
  6. Tesoro Corporation Closes the Sale of the Anacortes Rail Unloading Facility to Tesoro Logistics
  7. Tesoro And Savage Announce Joint Venture To Construct And Operate Crude-By-Rail Unloading And Marine Loading Facility
  8. Tesoro Corporation Announces New Petrochemical Feedstock Project
  9. Tesoro Corporation Board of Directors Approves Two Projects at the Anacortes Refinery

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