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Acronyms & Terms Glossary


Process Hazard Analysis (PHA) is a process for analyzing hazards with hazardous chemicals. The goal is to recognize potential causes and evaluate the consequences of hazardous chemical releases.

PHA studies are the core of process safety and risk management programs. They help companies identify hazard scenarios that could lead to a release of highly hazardous chemicals that can cause negative impact on people, the environment, and property. PHA also is required by OSHA's PSM (29 CFR 1910.119) and EPA's RMP (40 CFR 68) regulations in the US and process safety and risk management regulations around the world. Types of PHAs include:
- Hazard and Operability (HAZOP)
- What if
- What-If/Checklist Analysis
- Failure Modes and Effects Analysis (FMEA)
- Dust Hazard Assessment
- Control System Hazard and Operability (CHAZOP)

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