Fault Tree/Event Tree Basic Training & Use of Fault Trees Plus

Most risk systems today have risk matrices that are used for screening High-Risk events. Once identified, High-Risk events may require further analysis. Many books have been written on how to build Fault Trees and event trees to handle every eventuality. In the vast majority of situations effective Fault Trees and Event Trees that will give real answers in real facilities can usually be drawn by hand on a napkin. The key is to understand the critical inputs for the tools and be able to recognize a “reasonable” result. Knowing this allows the Safety Manager or Engineer to make a determination about whether the scenario requires more complicated or precise analysis. 

This eight (8) hour presentation provides basic instruction in the use of fault trees and event trees to determine risk. In this class, participants: 

• Gain understanding of symbols typically used the make fault trees
• Gain understanding of basic math (i.e. multiplication and addition) typically used the make fault trees
• Learn to develop rationale for distinguishing between initiating events and contributing events
• Understand the difference between Frequency-based events and Probability-based events
• Understand the basic “roadmap” of a Safety Instrumented System (SIS)
• Brainstorm independent protection layers and their independence and effectiveness 
• Understand the relationship between risk, frequency and consequence
• Use the tool (Fault Trees Plus) to solve PSM risk concerns
• Understand the strategic difference between “Consequence Mitigation” and “Frequency Reduction” and why the latter is preferable

Target Personnel:

• I/E engineers that work with SISs
• Process Engineers
• Technical personnel that support Process Hazard Analysis (PHAs)
• Site PSM core personnel
• PHA Facilitators
• Process Control Engineers participating in MOCs
• Process and Technical Managers and Leaders who manage maintenance and safety compliance