Revalidating Process Hazard Analyses is a Center for Chemical Process Safety publication from AIChE that provides practical guidance for reviewing and updating prior process hazard analyses. It covers the purpose and objectives of PHA revalidation, preparation activities, evaluation of previous studies, identification of process and facility changes, selection of appropriate revalidation methods, team study sessions, documentation, recommendation follow-up, and records retention.
The document includes regulatory context, structured checklists, example worksheets, and supporting material for teams responsible for process safety management in chemical and related industrial facilities.
Application Scope: Intended for plant management, operating personnel, engineering groups, process safety professionals, and PHA teams involved in revalidating hazard analyses for chemical processing facilities and covered process safety management programs.
