MTTR , MTBR, break down analysis reports

[Former Member]

Hello ,

I am new to PM module. I want to understand basic concept of MTTR and MTBR and the SAP config. required to get the above metioned reports in SAP.

It will be a great help if some one can elaborate steps required in config. and prerequisites to fetch the reports from the scratch.

Related links, documents will also be a great help for me.

Thanks

[former_member499912 · Accepted solution]

Hi ,

MTTR and `MTBF are the two performance measuring parameters for Plant maintenance.

MTTR-Mean time to repair

MTBF- Mean time between failure.

These reports are captured from notification

You have to set the breakdown indicator check box in the notification and also you have to enter malfunction start date and mallfunction end date.

Also in SPRO setting ,creation of notification type you have to give update group -26

Please do the following setting and you can execute the reports.

Thanks

Anil kumar

[former_member796452]

Hi Murthy

SAP MTTR and MTTB is used to monitor performance of maintenance work performed on equipment.

Please visit below link for complete concept and details.

SAP Plant Maintenance Documents

[Former Member]

ok i am able to do it

[Former Member]

Hi AR1,

There are three cases which are important for the breakdown analysis. These are represented in the following diagram, which displays two reported breakdowns in each case.

Three Cases for Breakdown Analysis

Key Figures for Downtime

The key figures for downtime comprise the following figures:

u2022 Downtime entered/Time To Repair

u2022 Mean Time to Repair

The average duration of a machine breakdown, MTTR (Mean Time To Repair), is calculated from the individual history of a piece of equipment. This gives the following formula:

The key figure MTTR is calculated in hours.

First breakdown 10 hours

Second breakdown 05 hours

Number of breakdowns 02

MTTR = 10 + 5 / 2 = 7.5 hours

To calculate the key figure Mean Time To Repair, in the breakdown analysis (information structure S070) the effective breakdowns and the number of effective breakdowns are taken into account. In all other analyses (and the underlying information structures) the noted breakdown duration and the number of noted breakdowns are taken into account.

Key Figures for Duration Between Machine Breakdowns

The key figures for the duration between machine breakdowns comprise the following ratios:

u2022 Time between Repair

u2022 Mean Time between Repair

The average duration between two machine breakdowns, MTBR for short (Average Time between Repair), is calculated from the individual history of the equipment. This gives the following formula:

The key figure MTBR is calculated in hours.

The following example shows how the MTBR is calculated:

Acquisition date of pump A 01.01.94

First breakdown 10.01.94

Downtime 10 hours

Second breakdown 20.01.94

Downtime 5 hours

Number of breakdowns 2

MTBR = (19 * 24 - 10) / 2 or X + Y (hr) / 2

= (456 - 10) / 2 or (216 + 240 - 10) / 2

= 223 hours

Example: Average Duration Between Two Machine Breakdowns (MTBR)

Hope it may help to you

Regards

Srinivas

[Former Member]

Hello all,

I Understood the concept, but how to map in SAP?

Thanks

[Former Member]

Hi AR,

You can refer the below link [Breakdown_Statistics|http://help.sap.com/erp2005_ehp_04/helpdata/EN/8c/fd586fa94711d1890a0000e8322f70/frameset.htm]

Regarding the configuration you need to do most of the PM configuration.

In other word you require all the master such has Equipment, Functional Location, Work center, Cost center, Notification type, Catalogue,Location, Workcenter and so on..

you need to do all the related configuration in order to create the required masters to get your MTTR and MTBR.

regards

DPS