Article | REF: MT9200 V1

Operational reliability - Concepts and issues

Author: Jean FAUCHER

Publication date: October 10, 2008

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2. Reliability

The focus here is on concepts. For theoretical aspects and reliability calculations, please refer to [1] .

Reliability is defined as the ability of a device to operate without failure, under given conditions, for a given time. When we quantify this parameter, we express this aptitude as the probability of reaching a time t without failure.

For example: reliability (1,000 hours) = 98%, which means that in 2% of cases, we have to accept that a failure may occur before the specified time.

It should be noted that absolute reliability (zero risk of failure or reliability (t ) = 100%) does not generally exist, which may be considered regrettable, since...

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