Statistical Aspects of Reliability in systems Development

Abstract
A system reliability program is an operational procedure for obtaining the over-all reliability objectives in the development of a system. The reliability program must be closely integrated with the system developmental activities to assure that the over-all program objectives are fully obtained within the required time scale. The analytical objectives of the system reliability program are twofold. First, the specified system reliability requirements must be apportioned to the subsystems and components to assure adequate equipment design. Second, as component and subsystem design data are made available throughout the development program, this information must be utilized in predicting the System reliability. In predicting system reliability, it is necessary to determine both the component reliability relationships and the individual component failure probabilities. Several statistical methods for determining component reliability are presented; however, the exact methodology must be tailored to the specific system and development program. System reliability can be predicted by utilizing component reliability data together with an adequate analysis of component and subsystem reliability relationships.

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