Process Hazard Analysis is a systematic examination and assessment of data and facts about some process to uncover and understand risks existing in the process environment. Its purpose is to identify and classify exposure points according to their estimated degree of hazard.
Process hazard analysis provides a foundation for process problem solving and decision making. By analyzing risks and uncertainties surrounding a process, decision makers can identify what factors have a negative impact on the process and what solutions can used to eliminate this impact and reach process improvements.
Hazard analysis includes the following steps:
- Identify negative external and internal factors (conditions, events, or scenarios) affecting the process
- Determine cause-and-effect relationships between probable happenings
- Evaluate possible process outcomes under different assumptions and identify the most probable outcome
- Use qualitative and quantitative techniques to reduce uncertainty of the most probable outcome
- Develop a hazard response plan that removes the factors and determine a course of action for producing the most probable outcome.