Chemical Process Safety (PSM/RMP)

Catastrophic Failure of NH3 Compressed Gas Cylinder

On Thursday, 1/15/2025, a 150-pound compressed gas cylinder of Anhydrous Ammonia (NH3) catastrophically failed while it was being transported in by a cylinder delivery vehicle. Three (3) people were hospitalized from this event: the truck driver, a poll plaza worker, and a security guard. As of 1/17/26, they are in stable condition. The video and…...

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Contractor’s Scissor Lift leads to $380 million in damages, closure of the facility, and 200 jobs lost

On June 14, 2021, at approximately 6:50 a.m., an accidental release of mineral oil occurred. The mineral oil ignited, causing a fire. The event resulted in $380 million in property damage and the permanent closure of the facility. Before the incident, the facility employed approximately 200 people. Leading up to the incident, the facility had…...

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Changing Cl2 1-ton cylinder leads to “Life Flight” ride

On December 3, 2020, at approximately 2:30 p.m., an accidental release of chlorine gas occurred at a plastics facility and seriously injured one employee. At the time of the incident, four (4) employees were involved in replacing an empty chlorine container with a full 2,000-pound (one-ton) container at the facility’s Ethylene Glycol unit. The unit…...

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Line Break Gone Bad w/ Contractor (Silicon Tetrachloride)

On July 24, 2020, at 1:20 p.m., an accidental release of approximately 100 milliliters of silicon tetrachloride seriously injured two contract workers. At the time of the event, contract workers were disassembling a 2-inch flange to remove a blind (a solid metal plate used to isolate equipment) before reinstalling a section of piping that had…...

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Temporary transfers of caustic solution through a hose results in serious burns

On April 11, 2020, at 11:25 p.m., a spent caustic release occurred. One (1) operator was seriously injured by skin exposure to the corrosive liquid. At the time of the incident, the operator was implementing a temporary procedure to remove liquid from a chemical hose connected to fill a portable storage tank (“frac tank”) that…...

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Line/Equipment Opening Gone Bad (1 lb. of NH3)

On January 7, 2023, at approximately 4:55 p.m., about one (1) pound of anhydrous ammonia was released at the facility. Exposure to the toxic ammonia gas seriously injured one refrigeration technician. At the time of the incident, the employee was working on an ammonia compressor that was “out-of-service”. The ammonia compressor is used in the…...

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A Process Safety WIN! (LPG Piping inspection)

A plastics company was having its 5-year piping inspection done, and the inspectors found a crack in a valve under the 30,000-gallon storage tank. As a precaution, both tanks were drained to safely make the necessary repairs. As part of the facility’s standard protocol, the company called the fire department and conducted preventive evacuations…. Membership...

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WRONG Chemical – WRONG TANK (nitric acid and phosphoric acid)

A bulk unloading incident created an orange chemical cloud, injuring four (4). The exothermic reaction occurred when phosphoric acid was accidentally unloaded into a 10,000 L (2640 gallons) nitric acid storage tank…. Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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OSHA issues $281K, and EPA issues $1.1M in citations resulting in a NH3 Refrigeration Fatality

U.S. EPA has reached a settlement with a food processing plant and its cold storage warehouse, under which the company paid a $1.1 million civil penalty. The company violated federal Clean Air Act (CAA) chemical safety requirements. These violations involve the safe handling of anhydrous ammonia, a hazardous chemical used for cooling and refrigeration. This…...

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Managing inventory of our HHC/EHS during emergencies

I ALWAYS encourage clients to be able to MANAGE their inventory when something goes wrong. Many have heeded my advice, and when they have a leak on a tank, they simply transfer the hazardous material to their “emergency tank,” or they have set their maximum levels in other tanks so they have spare capacity on…...

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Purging of gaseous hydrogen piping systems (IGC)

Where piping is to be opened for servicing, addition, or modification, the section to be worked on shall be isolated from the supply at the nearest convenient point, and the line pressure vented to the OUTDOORS. The remaining gas in this section of pipe shall be displaced with an inert gas. Prior to placing the…...

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CSB Issues Interim Safety Recommendations to U.S. Steel Clairton Coke Works Following Fatal Explosion

December 23, 2025, Washington, D.C. — The U.S. Chemical Safety and Hazard Investigation Board (CSB) today issued two interim safety recommendations in connection with the agency’s ongoing investigation into the August 11, 2025, fatal explosion at U.S. Steel’s Clairton Coke Works facility in Clairton, Pennsylvania. The explosion occurred when coke oven gas was released from…...

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