Printer FriendlyEmail Article Link

Perform: How does PMI / Perform Calculate QI, Quality Index?


Perform - All versions.


The Quality Index is calculated using path data.  The formula used is:

QI = (Time period in seconds - (ES + SES + UAS) )  / Time period * 100

Where Time period is 86400 seconds  for daily collections.  For Frequent PM it will be either 900 seconds for NE Types that do 15-minute collections or 3600 seconds for NE Types that do 60-minute collections.

For Frequent PM an additional index is saved to the database, Availability Index.  It is calculated as:

AI = (Time period in seconds - (UAS) )  / Time period * 100

Product : Perform