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Dust Explosion Hazards Electrostatic Hazards Thermal Instability Hazards Process Hazard Analyisis

Typical PHA methods are Checklists, HAZOP, What-ifs, Failure Modes and Effects Analysis, and Fault Tree Analysis (FTA). As a general rule, one should avoid more complicated methods particularly if the process is well defined and is covered by applicable codes and standards. Other factors that determine the PHA method include:

  • Complexity of the process
  • The inherent hazards of the chemicals and processes
  • Existing operations vs. design concepts/stage
  • Applicability of codes, standards, and recognized and generally accepted good engineering practices and to the process
  • In-house process safety expertise and the experience of the company in process safety issues
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