MTTR/MTBR Evaluation 

Using the Environment menu, you can carry out an evaluation for pieces of equipment and functional locations regarding the key figures "Mean Time to Repair" and "Mean Time between Repair". This is useful if, for example, statistical updating of information structure S070, which contains these key figures, has been switched off for performance reasons. You can also update information structure S070 within this evaluation.

The key figure values are read directly from the notification database. In this way it is possible to obtain detailed information on a breakdown for each period, for example, the notification number or the start/end of the malfunction. In addition, the key figures "number of breakdowns reported'" and "total downtime" are displayed; these cannot be evaluated using the standard breakdown statistics analysis (information structure S070). In the standard analyses, the "number of actual breakdowns" is displayed, which is for example not the same as the "number of breakdowns reported" where two breakdowns overlap (see also How the Key Figures are Calculated: Plant Maintenance Information System).

You can also branch to the corresponding notification in a further step within the evaluation.

What To Do

If you want to carry out an evaluation for pieces of equipment or functional locations, proceed as follows:

  1. From the Plant Maintenance Information System, select

    2. Environment ® Technical objects ® Equipment ® MTTR/MTBR Equipment

    or

    Environment ® Technical objects ® Functional location ® MTTR/MTBR Funct Loc.

    A selection screen appears.

  2. Enter the required selection criteria and select Program ® Execute.

For each technical object entered in the selection screen, you obtain the

Furthermore, the sum of the key figure values over the periods is displayed.

Using this list as a starting point, you can perform the following functions:

To do this, place the cursor on the desired period of the technical object and select the pushbutton Choose.

You obtain a list with the notification number for the breakdown, date and time of the malfunction start/end, and the downtime.

The second part of the list comprises a monthly statistic for the following key figures:

Select the Disp.notification pushbutton to branch to the notification.