PSM stands for Process Safety Management, which is an OSHA regulation concerned with processes at facilities that use highly hazardous chemicals. PSM provides a compliance framework to evaluate each process with the end goal of no spills, fires, explosions, reactions, releases, or other incidents arising from their use. The PSM standard requires employers to implement safety programs that identify, evaluate, and control hazards. The regulation was promulgated by OSHA in 1992 in fulfillment of requirements set in the 1990 amendments to the Clean Air Act). PSM applies to processes that involve certain threshold quantities of chemicals listed in the standards Appendix A and processes where there are 10,000 lbs. or more of a Category I flammable gas or flammable liquids with a flashpoint below 100 degrees on site in one location. PSM is an important regulation to ensure the safety of workers and the public in facilities that handle hazardous chemicals.