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Fault Tree Analysis (FTA)

Prevent systemic failures

Want to reduce risk? Need preemptive quality control?

This software capability allows you to reduce design defects, product recalls and production downtime. The result is an increased ability to produce safe, reliable, high quality products. The fault tree analysis capability is an integral part of the IHS Risk Assessment Solution, which enables you to:

  • Improve accuracy and quality of your products and processes
  • Drive continuous improvement
  • Leverage multiple options for completing studies
  • Obtain greater transparency
  • Turn standalone diagrams into integrated data that is aggregated with other risk assessments
  • Support compliance with regulations and standards


Study Options

Studies can be completed using various techniques:

  • Static Gates
  • Dynamic Gates
  • Events (basic, undeveloped, dormant, spare)
  • Reports (including cut set and importance measures)

Verify your results with three independent calculation engines and leverage the following options:

  • Importance Measure Table
  • Minimal Cut Sets
  • Unreliability
  • Unavailability
  • Failure Frequency
  • Number of Failures
  • Downtime
  • Mean Time to Failure and Mean Time between Failure
Regulatory Compliance

Helps you conform to a variety of regulations including:

  • The International Electrochemical Commission IEC 61025
  • NASA Fault Tree Handbook with Aerospace Applications
  • The Nuclear Regulatory Commission Fault Tree Handbook NUREG 0492

Management Tools

You can drive continuous improvement in your processes leveraging a variety of powerful management tools including:

Qualitative System Analysis

Unreliability System Analysis Methods
Cross Product, Cut Set Summation, Esary-Proschan, Exact Probability Calculation, Monte Carlo Simulation

Importance Measures
Birnbaum, Criticality Importance, Fussel-Vesely, Risk Achievement Worth, Risk Reduction Worth

Event Failure Modeling
Choose from several different models, including Constant Probability, Constant Failure Rate with Repair, Weibull Distribution, Dormant and Spare Event

Common Cause Failure Models
Get support for four different CCF models, Beta Factor Model, Alpha Model, Multiple Greek Letter (MGL) Model, Beta Binomial Failure Rate (BFR) Model

Related Methodologies

IHS equips you with common methodologies and configurable industry standard templates for your risk assessments.

  • Bow Tie Analysis
  • FMEA
  • JHA
  • LOPA
  • PHA
  • SVA
  • What-If/Checklist
  • IHS EHS&S Professional Services offer a proven track record of helping our clients achieve success in reliability. We can provide the resources that you need to complement your existing project team or facilitate new studies.

Industry Success Stories

Complimentary Whitepaper: Using Leading Indicators to Continuously Improve EHS&S Sustainabiity Performance
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