(40i) Revalidating a Hierarchy of Hazard Controls Analysis
AIChE Spring Meeting and Global Congress on Process Safety
2023
2023 Spring Meeting and 19th Global Congress on Process Safety
Global Congress on Process Safety
GCPS - Process Safety Poster Session
Monday, March 13, 2023 - 5:00pm to 7:00pm
Analyses other than a process hazard analysis (PHA) may need to be revalidated periodically. For example, a Hierarchy of Hazard Controls Analysis (HCA) is required to be "updated and revalidated" by the California OSHA (CalOSHA) Process Safety Management (PSM) for Petroleum Refineries and "updated" by the California Accidental Release Prevention (CalARP) Program 4 requirements every 5 years.
The CCPS book Guidelines for Revalidating a Process Hazards Analysis, 2nd Edition, published in 2022 outlines a method for using the Redo and Update approaches for revalidating analyses that are "complementary" to a PHA, such as an HCA or a Dust Hazard Analysis (DHA).
This poster will lay out a simple and effective procedure to revalidate an analysis (e.g., HCA) that has already been performed by using the same steps as a PHA revalidation: (1) Evaluate the prior analysis, (2) Evaluate operating experience since the prior analysis, (3) Select an appropriate revalidation approach, (4) Prepare for and conduct the meetings, and (5) Document the results.