Government or official record
Chevron Richmond Refinery Fire
U.S. Chemical Safety and Hazard Investigation Board
Cross-File evidence ledger
Where this source supports the record
Each entry separates the File’s editorial relevance note from its exact, section-level claims. A bibliography link without a direct claim is labeled plainly.
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Engineering failures · 6 August 2012Open File evidence →
The 2012 Chevron Richmond Refinery Fire
No. 4 Crude Unit, Chevron Richmond Refinery · United States
Why editors use it herePrimary federal investigation hub for the rupture, fire, metallurgy, process-safety findings, and recommendations.
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Quick read
On 6 August 2012, severely corroded piping ruptured in the No.
Reviewed 24 July 2026 -
Trigger and conditions
Workers observed a small leak from the 4-sidecut line while the unit remained in operation.
Reviewed 24 July 2026 -
Uncertainty
The widely cited 15,000 figure counts people who sought medical attention, not 15,000 confirmed injuries caused by toxic exposure.
Reviewed 24 July 2026 -
Why it matters
Corrosion is ordinary and predictable; catastrophe followed because knowledge about it did not produce timely replacement of the most vulnerable pipe.
Reviewed 24 July 2026
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Quick read