Question

State the mathematical expression to define the availability of equipment over a specified time and operational availability?

Answer 1

`Availability=(Up\ time)/(Down\ time+Up\ time)`

Step-by-step explanation:

Availability:

It define as the probability of system which perform desired task before showing any failure .

The availability can be define as follows

`Availability=(Up\ time)/(Down\ time+Up\ time)`

Or we can say that

`Availability=(Up\ time)/(total\ time)`

Availability can also be express as

`Availability=(MTBF)/(MTBF+MTTR)`

Where MTBF is the mean time between two failure.

MTTR is the mean time to repair.