# Reliability Block Diagrams Overview

A graphical and mathematical model of the elements of a system permitting the calculation of system reliability given the reliability of the elements. The model reflects the reliability performance structure including series, parallel, standby and other arrangements of system elements.

Each block in an RBD represents a component or subsystem of the system. The organization and connecting lines represent the reliability structure of the system and may or may not be representative of the system’s functional block diagram. Continue reading