CMA Intermediate · Operations Management and Strategic Management · Designing of Operational Systems and Control
In operational control of maintenance, the ratio of time a machine is actually available for production to the total scheduled time is known as:
This measure is availability. It is calculated as the time the machine is available for production divided by total scheduled time, showing how reliably equipment can be used. Mean time to repair, by contrast, measures the average length of a repair, not a proportion of time.
- AAvailabilityCorrect
- BMean time to repair
- CDefect rate
- DCapacity utilisation of inventory
Explanation
Availability measures the proportion of scheduled time equipment is operable, typically uptime divided by total scheduled time. Mean time to repair is the average duration of a repair, not a ratio of available to scheduled time.
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