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Keywords:

  • phases of operation;
  • modes of operation;
  • process life cycle;
  • process hazard analysis

Abstract

Processes experience various phases of operation during their life cycle. Hazard scenarios may occur during any of these phases, and they may vary by phase. Consequently, it is essential that process hazard analysis (PHA) studies address all phases of operation that a process may experience. Current PHA practices provide an inadequate treatment. This article describes an approach that provides an appropriate treatment for all process phases. © 2012 American Institute of Chemical Engineers Process Saf Prog, 2012