411 REFERENCE · Wikipedia
2010 Tesoro Anacortes Refinery disaster
Reference material by Wikipedia contributors. This retains its source identity and is not 411 news reporting.
Explosion in Anacortes, Washington state, U.S.
January 2025
Tesoro Anacortes Refinery disaster Anacortes Refinery 31904.JPG The Tesoro Anacortes Refinery 2 April 2010 00:30 PDT Tesoro Anacortes Refinery, Anacortes, Washington 48.493 N 122.565 W type:event_region:US-WA inline,title rupture of a heat exchanger 7 1
The 2010 Tesoro Anacortes Refinery disaster was an industrial accident that occurred at the Tesoro Anacortes Refinery in Anacortes, Washington on April 2, 2010. Seven workers received fatal burns in an explosion and ensuing fire when a heat exchanger violently ruptured after a maintenance restart.Investigation Report: Catastrophic Rupture of Heat Exchanger (Seven Fatalities) http://www.csb.gov/assets/1/7/Tesoro_Anacortes_2014-May-01.pdf csb.gov U.S. Chemical Safety and Hazard Investigation Board 23 June 2015 May 2014
Explosion
At 12:30 a.m. on April 2, while personnel were performing post-maintenance heat exchanger restart operations, a heat exchanger on an adjacent bank catastrophically and violently ruptured. The pressure-containing shell of the heat exchanger burst at its weld seams, expelling a large volume of very hot hydrogen and naphtha, which spontaneously ignited upon contact with the surrounding air. The ensuing explosion was so violent that many in Anacortes felt the shock wave across Fidalgo Bay. A giant fireball lit up the sky above the refinery, and a plume of black smoke was pushed toward the town by a southeast wind. It took about 90 minutes to put the fire out.Tibbits George 3 dead, 4 hurt in blast, fire at Wash. refinery http://www.goskagit.com/news/dead-hurt-in-blast-fire-at-wash-refinery/article_c5a158f2-4bd0-5f3a-a2de-f12346928dd8.html Associated Press 1 April 2010
Aftermath
The families of the victims and an injured contractor filed a lawsuit against Tesoro.https://seattletimes.com/seattle-news/families-of-killed-workers-sue-tesoro-over-anacortes-refinery-blast Families of killed workers sue Tesoro over Anacortes refinery blast Brunner Jim 2011-02-09 The Seattle Times 26 August 2022 The lawsuit was settled for $39 million,https://sanjuanjournal.com/news/tesoro-to-pay-39m-for-fatal-anacortes-refinery-blast Tesoro to pay $39M for fatal Anacortes refinery blast Wehrly Steve 2014-02-04 Journal of the San Juan Islands 26 August 2022 but as of 2020 the company continued to fight a fine and government accusations that it willfully put its workers in harm's way.Ryan John Four Years After Deadly Blast, Tesoro Mostly Unscathed http://kuow.org/post/four-years-after-deadly-blast-tesoro-mostly-unscathed kuow.org 7 July 2014 23 June 2015Bernton Hal Washington farm company fined $2 million after 2 workers die of COVID-19 https://www.seattletimes.com/seattle-news/farm-company-fined-2-million-after-2-workers-die-of-virus/ 23 December 2020 The Seattle Times 2020-12-21
The Tesoro refinery had been fined $85,700 in 2009 for 17 "serious" safety violations — meaning there was a risk of "death or serious physical injury" from each violation. Those fines were later reduced to three violations and a $12,250 settlement.Sarah Jean Green Zach Broom Five dead in Anacortes refinery explosion and fire http://www.seattletimes.com/seattle-news/five-dead-in-anacortes-refinery-explosion-and-fire/ 23 June 2015 Seattle Times 2 April 2010
According to the final report released by the CSB, the explosion was caused by high temperature hydrogen attack (HTHA), which severely cracked and weakened carbon steel tubing and led to the rupture. As a result, the CSB recommended the state adopt more rigorous process safety management attributes and features based on the team's regulatory analysis. The Nelson curve for carbon steel was also reduced, prohibiting the use of the material in processes that operate in temperatures above 400 F C.Stayton Mark Chemical Safety Board releases final report on deadly refinery explosion in Anacortes http://www.seattletimes.com/seattle-news/chemical-safety-board-releases-final-report-on-deadly-refinery-explosion-in-anacortes/ Skagit Valley Herald 23 June 2015 2 May 2014
The accident was the state's worst industrial disaster in 50 years. A similar incident occurred in November 1998, when six men were killed in explosion at the Equilon Puget Sound Refinery in Anacortes.Explosion and fire at the Equilon Puget Sound Refinery in Anacortes kill six refinery workers on November 25, 1998. http://www.historylink.org/index.cfm?DisplayPage=output.cfm&file_id=5618 HistoryLink.org 23 June 2015
See also
Williams Olefins Plant explosion
References
External links
Report: Deadly Anacortes refinery blast ‘could have been prevented’
No Criminal Charges In Deadly Tesoro Refinery Explosion
Tesoro Refinery Fatal Explosion and Fire
No criminal charges in 2010 Tesoro explosion, U.S. Attorney decides
Chemical Safety Board to Vote on Tesoro Explosion Report
The Anacortes Refinery Disaster. Fault Lines - Al Jazeera English (video, 25 mins)
Category:2010 in Washington (state)
Tesoro Anacortes Refinery disaster
Category:Disasters in Washington (state)
Category:Industrial fires and explosions in the United States