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What is FTA (Fault Tree Analysis)
Fault Tree Analysis (FTA) is an analytical technique which is used to evaluate the probability of failure or reliability of complex systems. Due to its versatility, it can be applied in a number of areas, particularly in the area of risk management, quality management and security management.

Fault Tree Analysis, usually the abbreviation FTA is used. It is an analytical technique which is used to evaluate the probability of failure or reliability of complex systems. Due to its versatility, it can be applied in a number of areas, particularly in the area of risk management, quality management and security management. It is applicable as a preventive method, as well as the method of analysis of existing problem (e.g. accident). FTA method usually follows the FMEA analysis and it is intended for complex systems.

Use of the FTA in practice: FTA method is based on the analysis of the top event or problem (generally negative phenomenon, such as accident, breakdowns, poor quality, high costs) and helps to systematically identify the factors that are causing the problem or adversely affect the operation of the system. Its aim is a detailed analysis - finding the causes of negative phenomenon. Furthermore, it can reduce the likelihood of its occurrence. FMEA or HAZOP is preferable to use for simple systems.

FTA method was first used in 1962 by Bell Telephone Laboratories and was improved by Boeing. The method has found its place wherever it was necessary to deal with complex systems and seek, reduce the failure, or improve the quality, namely in sectors such as energy, space, aviation, nuclear energy and more.

FTA method became a basis for a standard IEC 1025 - Fault Tree Analysis

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Last update: 24.07.2015

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