HAZOP Study and Process Hazard Analysis (PHA)

HAZOP (Hazard and Operability Study) and Process Hazard Analysis (PHA) are structured techniques used to systematically identify hazards and operability issues in processes, systems, or facilities. By exploring how deviations from intended parameters can arise — using guidewords like more, less, none, reverse — teams can uncover credible causes, evaluate safeguards, and define risk-reduction actions. Originally developed for chemical processes, HAZOP is now widely used across industries, supporting compliance with standards.

Service information

  • Lead structured HAZOP / PHA sessions with expert, impartial facilitation
  • Document and track findings, actions, and recommendations using specialist software
  • Expand on HAZOP findings with Layer of Protection Analysis (LOPA) or other Safety Integrity Level (SIL) determination method
  • Apply HAZOP methodology throughout the asset lifecycle — from front-end engineering design (FEED) to modification, and decommissioning
  • Align with regulatory and industry frameworks, including IEC 61882, OSHA PSM (29 CFR 1910.119), COMAH Regulations, and CCPS Guidelines
  • Offer tailored training and workshops for HAZOP leaders, scribes, and participants

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