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Updated on 6/11/2019
Relyence User Guide
Fault Tree
Direct link to topic in this publication:

Fault Tree

Fault Tree analysis (FTA) is a sophisticated, deductive analysis tool for risk assessment. Fault Tree analysis is a top-down failure analysis technique. A Fault Tree diagram is drawn using logic gates (AND, OR, etc.) in conjunction with associated failure events as inputs. By evaluating potential failure events along with their associated probabilities, the likelihood of a catastrophic system event occurring can be assessed. Commonly used in high-risk industries such as nuclear and aerospace, Fault Tree is also used in other industries concerned with safety, reliability, and risk reduction. Fault Tree analysis involves a highly computational back-end engine for determination of risk probabilities and the event paths that can lead to system failures.

Relyence Fault Tree provides a framework for you to manage and perform Fault Tree Analyses. For a quick start, follow through the Getting Started with Relyence Fault Tree topic. For general information on performing fault tree analyses, review Introduction to Fault Tree Analysis. For an overview of the core features of Relyence Fault Tree, review Relyence Fault Tree Basics. When you are comfortable with the basics of Relyence Fault Tree and want to explore the more advanced capabilities, refer to Relyence Fault Tree Advanced Features.

Relyence Fault Tree Lite is a simplified version Relyence Fault Tree that contains the same graphical front end for creating your fault tree diagrams but performs a subset of the full Relyence Fault Tree calculations. Fault Tree Lite includes the ability to calculate Cut Sets and the Unavailability at the final time point to support a more qualitative FTA.