Fault Tree Analysis

Onsite Training: Root Cause Failure Analysis, FMEA
  • Course:Fault Tree Analysis
  • Course ID:FTREE1 Duration:2 days Where: Your Office (7+ Persons)
  • Available as a private, customized course for your group at your offices or ours and in some cases as a WebLive(TM) class.

  • Download Course Description (PDF)

Course Outline

Fault Tree Analysis: Introductory Concepts.

 

  • Fault tree analysis history, applications, purposes, and capabilities.
  • Definitions.
  • Fault tree analysis as a predictive tool.
  • How fault tree analysis can predict the probability of an undesired
    condition.
  • Fault tree analysis applied to complex system failures.
  • Fault tree analysis, Ishikawa diagram, and FMEA comparisons.
  • Related military and commercial standards.
  • Case study. Group activity.

 

Fault Tree AnalysisFault Tree Analysis Approach. 

 

  • Defining the undesired system condition or failure condition.
  • The concept of a top undesired event.
  • Inductive versus deductive logic.
  • Fault tree analysis symbology.
  • Defining the fault tree analysis top tier.
  • The concept of gates and events.
  • F-16 Air Combat Fighter case study.
  • Group activity.

 

Fault Tree AnalysisFault Tree Analysis Events. 

 

  • Command events.
  • The top undesiredevent.
  • Basic failure events.
  • Normal events.
  • Human error events.
  • Undeveloped events.
  • Criteria for assigning undeveloped events.
  • Group activity.

 

Fault Tree AnalysisFault Tree Analysis Gates.  

 

  • OR gates.
  • AND gates.
  • INHIBIT gates.
  • Exclusive OR gates.
  • Sequential AND gates.
  • INHIBIT conditions.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisFault Tree Analysis Construction. 

 

  • Relationships between logic operators and events.
  • Top undesired events.
  • The top tier. Developing fault tree logic.
  • Fault tree tiers.
  • Fault tree construction.
  • Navigating through the system.
  • The advantages of navigation-based fault tree construction versus listing all events on a single tier.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisAdvanced Fault Tree Analysis Construction. 

 

  • State of the part and state of the system considerations.
  • Using state of the part considerations to identify additional events based on environmental, command, and component failure mechanisms.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisFault Tree Analysis Quantification.

 

  • Probability and statistics applied to fault tree analysis.
  • Failure rate and probability considerations for basic failures, normal events, human errors, undeveloped events, and inhibit conditions.
  • Mean Time Between Failures, failure rates, and probability relationships.
  • Operating/mission time considerations.
  • Dormant versus active failure rate considerations.
  • Failure rate sources.
  • Environmental effects on failure rates.
  • Determining event, branch, and top undesired event probability of occurrence.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisRoot Cause Failure Analysis.

 

  • Fault tree applications to the root cause failure analysis process.
  • Component versus system failures.
  • Defining the failure.
  • The root cause failure analysis approach.
  • Fault tree analysis, failure mode assessment and assignment matrices, supporting analysis, and managing the failure analysis.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisRedundancy Considerations. 

 

  • Using fault tree analysis to identify single point failures or other conditions that can defeat redundant circuitry and other fail-safe design approaches.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisFault Tree Cut Sets. 

 

  • Cut set and minimal cut set definitions.
  • Identifying fault tree analysis cutsets.
  • Cut set order.
  • Cut set and reliability block diagram comparisons.
  • Using cut sets to identify single failure points.
  • Case study.
  • Group activity.

 

Fault Tree AnalysisFault Tree Analysis Software. 

 

  • Manually generated versus computer generated fault tree analysis.
  • Computer aided fault tree analysis (CAFTA).
  • Web-based software.
  • Using Visio for fault tree analysis. Using Excel for quantifying fault tree analysis.
  • Other available fault tree analysis software.
  • Case study.

 

Fault Tree AnalysisPost-Fault-Tree Activities and Course Wrap-Up. 

 

  • Managing fault tree findings.
  • Fault tree analysis as an engineering development risk mitigation tool.
  • Course wrap up and critique.