MindMap-FaultTreeAnalysis

MindMap-FaultTreeAnalysis

• 1. Identify the objective for the FTA.
  • phrased in terms of a failure of the system to be analyzed
  • characterize mission failure
• 2. Define the top event of the FT.
  • the event for which the failure causes will be resolved
  • defines the failure mode of the system
• 3. Define the scope of the FTA.
  • the scope must be defined
  • indicates which of the failure and contributors will be included/not included
  • includes boundary conditions for the analysis
    • initial states of components
    • assumed inputs
    • the system to be analyzed
    • modes of operation
    • interfaces to other systems
• 4. Define the resolution of the FTA.
  • detailed cause of failure
  • example: faiure to operate-elaborate on this
  • identify major component
  • identify major component and failure
• 5. Define ground rules for the FTA.
  • define ground rules
  • procedures and nomenclature
  • modeling ground rules
    • component failure
    • human error
    • common cause of failure
• 6. Construct the FT.
  • actual construction of the fault tree
• 7. Evaluate the FT.
  • evaluate each basic event
  • be quantitative if available
• 8. Interpret and present the results.
  • test the fault tree
  • must provide tangible impication such as a fix