Fault Tree Analysis

Fault Tree Analysis
in Reliability Workbench

Download Reliability Workbench and access FaultTree+, our powerful fault tree analysis software used in high profile projects at over 1800 sites worldwide.

  • Quickly build models using drag and drop and libraries
  • Fast and accurate system analysis
  • Fully integrated with FMEA, event tree and Markov analysis
  • Importance, common cause and confidence analysis all included
  • No limit to the number of gates, events and hierarchical levels
  • ISO 26262 certified
  • Multiple standards support including ARP 4761, IEC 61508, ISO 26262
  • Integrated failure data libraries
  • Directly link to hazard logs for verification
  • Import/export facilities to databases and spreadsheets

Our software has been in continuous development since the 1980s and is the recognized standard for safety and reliability professionals.

Why choose Isograph's FaultTree+?

There are many reasons to choose our powerful FaultTree+ fault tree analysis software – here are
just a few:

Accurately Predict System Reliability

Our powerful minimal cut set generator ensures that dependent fault tree structures are modelled efficiently and accurately. Determine the reliability and availability of complex systems and identify weak points with importance analysis. Read More...

Highly Integrated

Link to prediction, FMEA, Markov and failure data libraries. Attach to event trees for risk analysis. Read More...

Enterprise Level Safety Analysis

Perform safety analysis at an enterprise level using the Isograph Enterprise Database. Maintain projects and libraries in a security controlled environment Read More...

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Why choose Isograph?

Our Credentials

Isograph's software is used in over 1900 companies, across 12,000 sites in 75 countries. We're ISO-9001 certified. We have software certifications with SAP and are IBM Business

Premium Support

With support engineers located in the United Kingdom and the United States with same day response times our support is second to none.

Industry Standards

Our software complies with recognised standards, including but not limited to ISO 26262, IEC 61508, AIAG & VDA, ISO 21434, ARP 4761, SN29500, IEC 61709, FIDES, DO-356 and ED-203.


Our software has been in continuous development since 1986 with upgrades and features driven by users and industry standards.

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