Fault Tree Analysis Software Tool

ALD offers RAM Commander's Fault Tree Analysis Software Module, integrated with RAM Commander Reliability Prediction and FMECA modules.

It implements and summarizes the first-hand experience gained by the ALD FTA experts in hundreds of projects using RAM Commander and other ALD reliability and safety software tools.

Fault Tree Analysis Software Features

• Up-to-date, intuitive and powerful fault tree diagram drawing interface allowing full control over the diagram: elements location, colors, styles, zooms, etc.
• Handy methods for diagram printing and simple Copy & Paste transfer to other applications
• Easy to use Events Library
• Calculation of Unavailability, Mean Unavailability, and Minimal Cut Sets
• Calculation of Importance and Sensitivity
• Set of required reports - FTA diagram, MCS, events library etc.
• Link between FTA and the product tree (reliability prediction module)
• Link between FTA and FMECA modules
• Automatically build FTA from FMECA
• Automatically build FTA from FMEA

Fault Tree Analysis Basics

Fault Tree Analysis is one of the most widely used methods in system reliability and failure probability analysis. A fault tree is a graphical representation of a logical structure representing undesired events ("failures") and their causes. You create the logical structure by using gates and represent undesired events by using basic events. Reliability parameters are assigned to the basic events. Widely used in system reliability studies, fault tree analysis offers the ability to focus on an event of importance, such as a highly critical safety issue, and work to minimize its occurrence or consequence. The probability of the top-level event can then be determined by using mathematical techniques. The resulting fault tree diagram is a graphical representation of the chain of events in your system or process, built using events and logical gate configurations.

Several analysis types can be conducted using our Fault Tree Analysis Software:
• Qualitative Analysis: performed by means of Minimal Cut Sets (MCS) building
• Quantitative Analysis: calculating the Absolute probabilities, i.e. the probabilities of system failures
• Importance/Sensitivity Analysis: Importance analysis results help to select those fault tree events, which contribute most to the system's unavailability. Sensitivity analysis helps to choose those events, where a relatively small change will lead to a relatively large system unavailability changes.

Download and Evaluate our Fault Tree Software Tool

Fault Tree Analysis is acknowledged as a key tool for increasing safety. It is unique and indispensable in analyzing risks and determining various combinations of hardware, software, and human error failures that result in a specified risk or system failure. Fault tree analysis is useful both in designing new products/services and in dealing with identified problems in existing products/services. In the quality planning process, the analysis can be used to optimize process features and goals and to design for critical factors and human error. As part of process improvement, it can be used to help identify root causes of trouble and to design remedies and countermeasures.

Fault Tree Analysis Software Tool is an integral part (module) of ALD's RAM Commander Reliability and Safety Tool. It gives several advantages for FTA module user - events' probabilities could be taken as a result of reliability prediction module or FMECA analysis module. Fault Trees may be built automatically using information from FMEA and FMECA analysis modules. Fault Trees are also used as an input data for Safety Assessment Module (supporting SAE ARP4761 and other safety requirements and standards).

Download RAM Commander's Demo version and try Fault Tree Analysis module for free.