Six Sigma and Beyond: Design for Six Sigma, Volume VI

The emphasis of all R & M is focused on three objectives:

• Reliability ” The probability that machinery and equipment can perform continuously, without failure, for a specified interval of time (when operating under stated conditions)

• Maintainability ” A characteristic of design, installation, and operation, usually expressed as the probability that a machine can be retained in, or restored to, specified operable conditions within a specified interval of time (when maintenance is performed in accordance with prescribed procedures)

• Durability ” Ability to perform intended function over a specified period (under normal use with specified maintenance) without significant deterioration