Fault Tree Analysis (FTA)

IHS risk assessment software, content and expertise facilitate compliance with safety and regulatory requirements, allowing companies to reduce design defects, product recalls and production downtime. The result is an increased ability to produce safe, reliable, high quality products. We will help turn your FTAs from standalone diagrams into integrated data that is aggregated with other risk assessments, such as FMEA and PHA. 

Key benefits:

• Supports compliance with a variety of regulations including: the International Electrochemical Commission IEC 61025; NASA Fault Tree Handbook with Aerospace Applications; and the Nuclear Regulatory Commission Fault Tree Handbook NUREG 0492
• Enables you to verify your results at least three times with three independent calculation engines
• Increases options for completing studies by providing Static Gates, Dynamic Gates, Events (basic, undeveloped, dormant, spare), and Reports (including cut set and importance measures)
• Drives continuous improvement with a variety of powerful management tools including:
  • Qualitative System Analysis, carried out through the use of minimal cut sets
  • 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 – Allows you to choose from several different models, including Constant Probability, Constant Failure Rate with Repair, Weibull Distribution, Dormant and Spare Event
  • Common Cause Failure Models - Supports the four different CCF models, Beta Factor Model, Alpha Model, Multiple Greek Letter (MGL) Model, Beta Binomial Failure Rate (BFR) Model
  • Calculation Options – Minimal Cut Sets, Unreliability, Unavailability, Failure Frequency, Number of Failures, Downtime, Mean Time to Failure and Mean Time Between Failure
• Displays a variety of calculation results, including Importance Measure Table and Minimal Cut Sets Tables, for greater transparency

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.

With IHS software, content and expertise, you can make EHS&S operational risk assessments part of a unified strategy for Enterprise Sustainability Management, supported by a single world-class provider. Contact us to learn more.

Related Methodology

• Bow Tie Analysis
• Failure Mode and Effects Analysis (FMEA)
• Fault Tree Analysis (FTA)
• Hazard and Operability Study (HAZOP)
• Job Hazard Analysis (JHA)
• Layer of Protection Analysis (LOPA)
• Process Hazard Analysis (PHA)
• Security Vulnerability Analysis (SVA)
• What If/Checklist