Reliabilityweb Definition: Availability

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Definition: Availability - Reliability Basis

As used in reliability calculations, the probability than an item or system is operating satisfactorily, at any point in time, when used under stated conditions.

Expressed by the formula Availability = MTBF (MTBF + MTTR). Synonymous with inherent availability

Tip excerpted from: The Professional's Guide To Maintenance And Reliability

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