PDR Calculations


TL 9000 Performance Data Reports (PDRs) are the best information available to TL 9000 registrants for comparing their performance to the industry. They are available in two forms: Monthly PDRs and Annual PDRs.

Monthly PDRs

The monthly PDRs are compiled from mandatory monthly data submissions from all TL 9000 certified registrations, as required by the TL 9000 quality management system. They can be obtained as shown on the access page. QuEST Forum's TL 9000 Administrator, the University of Texas at Dallas, manages the database, oversees operations and produces the PDRs.

The monthly TL 9000 PDRs are calculated according to the algorithms described in detail in the calculations paper in English and also in Japanese.

Annual PDRs

The annual PDRs are compiled from the same data used in the monthly PDRs and are calculated once each year in late February. They can be obtained as shown on the access page. The annual PDR data is the derived from all data submitted from TL 9000 certified registrations submitted over the previous year. The outputs include the average value for each measurement, calculated as defined in the Measurements Handbook, over the entire year. It also includes the number of data points that entered the calculation. In addition the Best-in-Class value from a single registration from December of the previous year is also included.

Comparison on Industry Data

TL 9000 requires certified registrations to compare their data to available industry data as detailed in requirement 3.5.2 i) of the TL 9000 Measurements Handbook. This requirement can be satisfied by using either the Monthly or Annual PDRs. While Monthly PDR data can be purchased by non-QuEST Forum members and used to meet this requirement, it is not necessary to do so. Using the Annual PDRs for comparison is sufficient to meet this requirement. However, TL 9000 registrants are encouraged to use these PDRs and other industry data as appropriate. For further guidance see the pager on PDR usage.