What the Plant Was Required to Do Before You Were Hurt
Catastrophic releases are what the process safety management standard was written to prevent. Its stated purpose, in 29 C.F.R. § 1910.119, is preventing or minimizing the consequences of catastrophic releases of toxic, reactive, flammable or explosive chemicals, which may result in toxic, fire or explosion hazards.
Whether the unit where you were hurt falls under this standard depends on what it held. Under paragraph (a)(1), the standard reaches a process involving a chemical at or above the threshold quantities listed in the standard's appendix A. It also reaches a process involving a Category 1 flammable gas, or a flammable liquid with a flashpoint below 100 °F, on site in one location in a quantity of 10,000 pounds or more. Two exceptions apply to that second category: hydrocarbon fuels used solely for workplace consumption as a fuel, if they are not part of a process containing another covered chemical, and flammable liquids stored in atmospheric tanks or transferred while kept below their normal boiling point without chilling or refrigeration. Paragraph (a)(2) says the standard does not apply to retail facilities, oil or gas well drilling or servicing operations, or normally unoccupied remote facilities.
If the unit was a "covered process," the plant carried its own safety obligations there, and a missing hazard briefing or an uncontrolled entry into that area becomes a question worth examining. That is one of the clearest lines between a plant case and a wellsite case, which is handled differently on the oilfield accident lawyer page. Whether the process met the thresholds is something the plant's own inventories and records usually show, and an attorney can help sort out what those records are likely to say.
Information about chemical hazards is governed by 29 C.F.R. § 1910.1200. Under paragraph (a), its purpose is to ensure that the hazards of all chemicals produced or imported are classified, and that information about those hazards is transmitted to employers and employees, through programs that include container labeling and other warnings, safety data sheets and employee training. OSHA's hazard communication page explains that chemical manufacturers and importers must evaluate the hazards of their chemicals and prepare labels and safety data sheets for downstream customers, and that all employers with hazardous chemicals in their workplaces must have labels and safety data sheets for exposed workers and train them to handle the chemicals appropriately.
In practical terms, a worker had a right to know what was in the line, vessel or tank. An unlabeled line or a missing safety data sheet may point to a gap in what the employer or supplier owed, which is why families often ask what warnings and training existed before the work began.
These standards set the expectations. A standard does not, by itself, show that anyone was at fault. Whether its requirements were met, and whether a gap caused the injury, depends on the facts.