Assessing Product Reliability
8.1.1. Why is the assessment and control of product reliability important?
|Some failures have serious social consequences and this should be taken into account when planning reliability studies||Sometimes equipment failure
can have a major impact on human safety and/or health. Automobiles, planes,
life support equipment, and power generating plants are a few examples.
From the point of view of "assessing product reliability", we treat these kinds of catastrophic failures no differently from the failure that occurs when a key parameter measured on a manufacturing tool drifts slightly out of specification, calling for an unscheduled maintenance action.
It is up to the reliability engineer (and the relevant customer) to define what constitutes a failure in any reliability study. More resource (test time and test units) should be planned for when an incorrect reliability assessment could negatively impact safety and/or health.