Hi, my name is Mick Windsor and I am happy to be a blogger here at the Reliability Web. Briefly about myself, my background is primarily in electronics and I have done several years in the mechanical trades. I have been in different roles including plant manager, maintenance strategist and now I run Windsor Business Solutions Pty Ltd specialising in SAP and Plant Maintenance
I will generally talk about maintenance systems and maintenance business processes, focussing more on SAP PM. I can talk about SAP PM functionality and I will try to give some SAP hints and tips and will post some good websites for you. Quite happy to discuss reliability and RCM as well. I look forward to hearing from you.
Mean Time Between Failure
How is the Mean Time To Repair (MTTR) and Mean Time Between Repair (MTBR) calculated in SAP. MTBR is the same as Mean Time Between Failure
Transactions:
o MCJB - MTTR/MTBR Equipment
o MCJC - MTTR/MTBR Functional Location
Inputs required
o Valid from date in technical object (functional Location or equipment)
o Breakdown box in the notification ticked
o Start and finish time of failure entered in the notification
The mean time to failure is calculated from the valid from date. If this date is not entered, it is calculated from the date of the first notification. The breakdown box must be ticked to indicate a failure and the failure start and finish time record the length of time that the equipment was down due to failure. The start and finish time of failure is most important as it gives you the data to calculate MTTR and MTBR.
You can also get these in the report
o Number of breakdowns
o Length of downtime
o Mean Time To Repair
o Mean Time Between Repair
Terminology
There are no standard maintenance definitions around the world and there are a plethora of definitions and three letter acronyms. Check out this list of articles containing heaps of definitions from Sandy Dunn’s great Plant Maintenance website to find out what that acronym or term means.
http://www.plant-maintenance.com/maintenance_articles_terminology.shtml
Keep safe & kind regards
with compliments
Mick
Mick Windsor
Windsor Business Solutions Pty Ltd
www.WindsorBusinessSolutions.com.au
Posted by Mick at November 1, 2004 07:54 PM | TrackBack