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CSB commends AFPM for voluntary refinery safety outreach

The CSB commended the American Fuel and Petrochemical Manufacturers for hosting workshops and creating a webpage with fluid catalytic cracking safety resources for refineries.
Top Story

CSB issues update on fatal AES explosion investigation

The CSB is investigating Accurate Energetic Systems’ “melt-pour” manufacturing process, process safety management, and industry guidance for commercial high explosive manufacturing.

CSB commends AFPM for voluntary refinery safety outreach

March 27, 2026 · The CSB commended the American Fuel and Petrochemical Manufacturers for hosting workshops and creating a webpage with fluid catalytic cracking safety resources for refineries.

CSB issues update on fatal AES explosion investigation

March 16, 2026 · The CSB is investigating Accurate Energetic Systems’ “melt-pour” manufacturing process, process safety management, and industry guidance for commercial high explosive manufacturing.

OSHA fines U.S. Steel, MPW Industrial Services for Clairton Coke Works explosion

February 24, 2026 · OSHA investigators concluded U.S. Steel and MPW Industrial Services exposed workers to explosion, struck-by, and high-pressure injection hazards, proposing nearly $180,000 in fines.

CSB releases final report on hydrogen sulfide release at PEMEX Deer Park Refinery

February 23, 2026 · The CSB concluded PEMEX Deer Park Refinery operators and contractors failed to correctly identify process equipment, assess hazards, and deviated from established policies and procedures.

OSHA cites Horizon Biofuels nearly $150K for willful safety violations

February 17, 2026 · As part of its investigation, OSHA fined Horizon Biofuels nearly $150K for willful safety violations. A combustible dust explosion killed three at its Fremont, Nebraska facility last year.

CSB launches investigation into Woodland Pulp chemical release

February 10, 2026 · According to initial information submitted to the CSB, the fatal incident in Baileyville, Maine may have involved the release of hydrogen sulfide in an enclosed process sewer.

CSB releases video on combustible dust explosion at Didion Milling

February 6, 2026 · In addition to describing 13 key safety issues, the CSB’s video on the Didion Milling explosion calls on OSHA to develop an overarching combustible dust standard for general industry.

CSB commends St. Louis Board of Aldermen for implementing recommendations

January 23, 2026 · The CSB commended the St. Louis, Missouri, Board of Aldermen for following its recommendation to revise the city’s Mechanical Code to meet national pressure vessels and boiler standards.

CSB recommends facility siting evaluation to U.S. Steel

December 30, 2025 · After a fatal explosion, the CSB called on U.S. Steel to conduct a facility siting evaluation at its Clairton Coke Works to address immediate hazards to workers based on building locations.

CSB YouTube channel surpasses 400,000 subscribers

December 26, 2025 · The U.S. Chemical Safety and Hazard Investigation Board built a strong and dedicated audience on YouTube, gaining 400,000 subscribers and 70 million views across over 100 videos.

CSB issues update on investigation of two NOx releases at Austin Powder

December 18, 2025 · A CSB investigation update indicates hazardous nitrogen oxide gas released at Austin Powder in Ohio when a cooling system was shut down and in Tennessee during failed reactor startups.

CSB releases video animation of fatal 2021 Yenkin-Majestic explosion

December 9, 2025 · The CSB showed how inadequate testing, engineering controls, and emergency plans contributed to the fatal 2021 Yenkin-Majestic Paint explosion in Columbus, Ohio in its new video.

CSB announces FY 26 free quarterly public meeting dates

December 9, 2025 · The Chemical Safety and Hazard Investigation Board is required to hold at least one public meeting each quarter to review its progress in meeting its mission and highlight successes.

Government shutdown over: what it means for safety agencies

November 14, 2025 · President Trump signed a continuing resolution Nov. 12, allowing safety agencies to resume full operations until Jan. 30. FY26 appropriations must be finalized before the new deadline.

CSB team to investigate Accurate Energetic Systems explosion

October 27, 2025 · ATF has finished clearing undetonated explosives and other hazardous materials from the AES site. The CSB is sending a team this week to investigate the explosion that killed 16.