|
|
楼主 |
发表于 2008-9-2 12:06:57
|
显示全部楼层
That depends on wether the machine was scheduled to run for those three shifts.
If the machine went down with 30 minutes left in the second shift it might have taken 30 minutes to fix. If the machine wasn't scheduled to run for the next three shifts and started up the next time it was needed, than availability should be calculated with only a 30 minute loss.
If, on the other hand, the machine went down with 30 minutes left in the second shift and it took 3 shifts + 30 minutes to get fixed, than the availability should be calculated with a 3 shift + 30 minute loss.
Availability is a measure of just what it says. What percentage of the time is the machine available to run when we want it to run? |
|
发表于 2008-9-2 12:06:43
