System Safety and Process Hazard Analysis (PHA)

System Safety Analysis
Process Hazard Analysis (PHA)
Fault Tree Analysis (FTA)
System Reliability Analysis
Failure Modes, Effects, and Criticality Analysis (FMECA)

The key to achieving safety is to understand what can go wrong. When dealing with system safety, systematic methods are available to provide the answer to this question rationally so that a decision maker can find the most cost effective system improvements that maximize safety. Over the last several decades, industries that deal with hazardous operations have developed systematic methods to address this important issue. Commonly used methods include:

  • Failure Modes, Effects and Criticality Analysis (FMECA)
  • Hazard and Operability Study (HAZOP)
  • Fault Tree Analysis (FTA)
  • Event Tree Analysis (ETA)
  • Checklist / What-If Analysis
  • Preliminary Hazard Analysis (PHA)
  • Cause Consequence Analysis

A large majority of our projects include the application of one or more of these methods to a system that may present certain hazards or concerns to management. We select the most appropriate method based on system characteristics and the needs of our client. In all of our analyses we not only address engineering design of the system, we also address system operation, personnel training, emergency conditions, test and maintenance conditions, etc. We believe a system safety or process hazard analysis should address all aspects of system operation including the man-machine interface.

Experience Base - System Safety and Process Hazard Analysis