Fault Tree Analysis Tool "FaultTree+"

Why is a dedicated tool for FTA+ necessary for ISO26262 functional safety compliance? Simply put, it is because it can perform cut set analysis.

1. What can and cannot be done with Excel FT diagrams can be created using Excel (or other Office tools). However, FT diagrams created in Excel cannot perform safety analyses such as cut set analysis or quantitative evaluations. They also cannot provide explanations for safety evaluations of models at the system level. 2. What cannot be done without specialized tools Cut set analysis, common cause failures, dependent failures, and systematic failures are difficult to express without specialized tools. The Enterprise version allows for revision management during collaborative work. It can also integrate with external tools like DOORS to manage changes during collaboration. 3. Differentiating between Excel and FTA+ For FT diagrams that are not complex and do not have common cause failures, Excel is suitable as it can be created relatively easily without additional costs. For models that are ASIL C or higher, or those that involve common cause failures that cannot be intuitively identified, FaultTree+ with its robust analysis features is more appropriate. When considering tools for ISO 26262 compliance, it is essential to ensure that cut set analysis can be performed.

Related Link - http://www.wavefront.co.jp/system_i/ft/

basic information

FaultTree+ is a major product of the British company Isograph, developed since 1986, and is currently implemented in 12,000 sites worldwide. 【Basic Components of FaultTree+】 1. Fault Tree Analysis 2. Event Tree Analysis 3. Markov Analysis 4. Weibull Analysis 【Main Features of FaultTree+】 1. Cut Set Analysis 2. Representation of Common Cause Failures (CCF) 3. Support for β models 4. Management of multiple FT diagrams on a single screen, with the ability to merge freely. 5. Library function that allows data sharing and reuse.

Price information

We offer perpetual (purchase) licenses, annual licenses, and short-term licenses. Prices vary depending on the license duration, so please contact us for more details.

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Applications/Examples of results

In relation to ISO26262, we have been implemented by over 70 major domestic automotive OEMs, Tier 1, and Tier 2 companies. Additionally, it is also used for railway RAMS and reliability analysis of large plants.