Process Hazard Analysis (PHA)
What is a PHA?
A PHA is required by OSHA for any industrial process that makes use of hazardous chemicals.
A PHA is required on all processes covered by the PSM standard.
It identifies and analyzes data to provide information that will assist employers and employees in making decisions for improving safety and reducing the consequences of unwanted or unplanned releases of hazardous chemicals. Its purpose is to identify the significance of scenarios that could result in fires, explosions, chemical spills and the release of toxic fumes or chemicals.
- It analyzes potential causes and consequences of fires, explosions, releases of toxic or flammable chemicals, and major spills of hazardous chemicals.
- It focuses on equipment, instrumentation, utilities, human actions (routine and non-routine), and external factors that might affect the process.
Knowledge Check Choose the best answer for the question.
4-1. A _____ is an organized and systematic process to identify and analyze the significance of potential hazards associated with the processing or handling of highly hazardous chemicals.
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