Hai Sathish
MTBF=Sum of up time periods / number of uptime periods
Suppose our widget machine is scheduled to run nonstop for 480 minutes. Instead, it runs 63 minutes, jams and goes down for 16 minutes, runs 102 minutes, blows a fuse and is off line for 30 minutes, then runs 200 minutes before smoking a belt and going down for the rest of the shift. The MTBF would be calculated as 63 Minutes + 102 Minutes + 200 Minutes ÷ 3 Occurrences = 121.7 Minutes MTBF
Hi,
Please go through the following link to know SAP calculations on MTTR and MTBF.
http://help.sap.com/erp2005_ehp_06/helpdata/EN/c1/37699d449a11d188fe0000e8322f96/content.htm
James Prabaharan
Hi Satis,
As per MTBF/MTTR calculation:-
MTBF = Mean Time Between Failures
To calculate MTBF, use this formula:
MTBF = Total uptime for a period of time / number of stops during the same periodIn other words, MTBF is the average time between downtime periods. For example, if during a week of production you have 30 hours of uptime and 10 stops then the MTBF would be 30 / 10 = 3 hours.
MTTR = Mean Time to Repair
To calculate MTTR, use this formula:
MTTR = Total downtime for the same period as used for MTBF / number of stopsPut simply, MTTR is the average time of a failure. For example, if during a week of production you have 10 hours of downtime and 10 stops then the MTTR would be 10 / 10 = 1 hour.
And you can take this report from TC- MCJB/MCI7
Regards,
Akhilesh
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