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Reliability Block Diagram (RBD)

Definition - What does Reliability Block Diagram (RBD) mean?

A reliability block diagram (RBD) is a diagrammatic method of analysis used to assess the reliability of a complex system. In this context, reliability is defined as a measure of the continuity of service or the probability that a system performs its intended function until a specified time without failing.

The reliability block diagram is also known as a dependence diagram (DD).

Safeopedia explains Reliability Block Diagram (RBD)

Predicting the reliability of an overall system can be made by looking at the reliability of the individual components that make up the whole system.

The structure of the RBD is based on the logical interaction of failures within a system that are required to sustain system operation. In addition, the RBD system is connected by a parallel or series configuration, or a combination of both.

An RBD can be used to analyze complex systems such as the reliability of oil and gas pipelines, which will help to plan timely maintenance and replacements of aging pipelines.

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