Accident: United States Steel Corporation Clairton Plant Coke Oven Explosion
Location: Location: Clairton, PA
Accident Occurred On: 08/11/2025 | Final Report Released On:
Accident Type: Explosion and Fire
Investigation Status: The CSB's investigation is currently ongoing.
On August 11, 2025, at approximately 10:45 a.m. local time, an explosion at the Unites States Steel Corporation Clairton Plant coke oven batteries 13 and 14 caused two fatalities and multiple injuries.
Conduct a siting evaluation for all occupied and potentially occupied buildings at the Clairton Coke Works facility. Utilize the guidance contained in the Center for Chemical Process Safety’s Guidelines for Evaluating Process Plant Buildings for External Explosions, Fires, and Toxic Releases, the American Petroleum Institute’s Recommended Practices 752, 753, and 756, and other industry good practice guidance documents.
Using the results from the evaluation performed in 2025-03-I-PA-R1, ensure that all documented facility siting hazards are mitigated in accordance with the guiding principles contained in the American Petroleum Institute’s Recommended Practices 752, 753, and 756.