- The primary objective of a hazard analysis is to identify all possible hazards, then it must categorize the hazards in terms of severity of consequences and then it must evaluate the probability of the hazard occurring. Preliminary hazard analysis is the initial hazard assessment conducted on the system. It identifies safety critical areas within the system and starts evaluating hazards and identifying safety design criteria and applicable safety requirements. Also subsystem hazard analysis examines each major subsystem and identifies specific hazards and safety concerns including failures, faults, processes or procedures and human errors. The SSHA also should address hazard controls and how those controls are verified.
- Reference: CCPS(1989) Guidelines for Technical Management of Chemical Process Safety
- A systematic effort designed to identify and analyze hazards associated with the processing or handling of highly hazardous materials and a method to provide information which will help workers and employers in making decisions that will improve safety.
- Reference: Occupational safety and health administration (OSHA)
- PHA is a thorough, orderly, and systematic approach for identifying, evaluating, and controlling the hazards of processes involving highly hazardous chemicals. The facility shall perform a process hazard analysis on all processes covered by the EPA RMP rule or OSHA PSM standard.
- Reference: United States Environmental Protection Agency