As required by regulatory bodies like Occupational Safety and Health Administration (OSHA), a process hazard analysis must be updated at least every five years—and these updates should also be accounted for in your PHA checklist.
Other occasions that may require regular updates may also include changes in the process, equipment, or regulations. It’s also important to review and update the PHA immediately after any significant changes to the process or following an incident to ensure ongoing safety and compliance.