Process Safety Management applies to a process which involves flammable liquid or gas in how many gallons or more?

• A. 1,000 gallons or more
• B. 10,000 gallons or more
• C. 100,000 gallons or more
• D. 5,000 gallons or more

Answer: (B)

Process Safety Management is triggered when a process contains a large amount of flammable liquid or gas, meeting a threshold that calls for formal safety program elements. The idea is to focus PSM on processes with substantial quantities because those pose higher risk and require hazard analysis, operating procedures, mechanical integrity, change management, and other safeguards. In many study materials this threshold is given in pounds, around 10,000 pounds of flammable material; when the material is described in gallons for ease of recall, the equivalent high-quantity figure used is 10,000 gallons or more. The key point is that once you reach a very large quantity, the PSM program applies. The smaller quantities listed do not meet the threshold and would not automatically trigger the full PSM requirements. Note that the official standard defines the threshold in pounds, so remember both units for real-world understanding.