1/ Definition

The number of PSS and their impact permit to :

• Check that the feedback and the continuous improvement loop is well done
• Check if the feedback and the continuous improvement loop has a utility
• Verify the impact of the actions taken after the PSS

2/ Objective / Target

The goal is to have actions which have an impact on the problems detected thanks to the PSS
An action without impact on an identified problem after a PSS analysis should be record in order to improve the PSS sessions. 

3/ Formula

See 5/ Calculation example

4/ Frequency

Monthly

5/ Calculation example

This indicator is calculated manually thanks to the excel file below (figure 1).
As a example, Rheinberg decided to create its own calculation rules (see figure 2) which permit to fill the excel file.
Then it's displayed in MECANO (see figure 3). 

Figure 1

Figure 2

Figure 3