Parts Quality Initiative
How Does PQI Work?
Step 1: DATA
A PQI Membership includes a subscription to Exelon’s web-based OneLab portal, which reveals Exelon’s extensive PQI Analysis database comprised of proven PQI test plans for more than 2,000 models and historical failure trends on more than 75,000 parts.
Since 2006, Exelon has compiled data revealing trends in failure variables specific to part type, manufacturer and model number for safety and non-safety single point vulnerability applications.
Step 2: TEST
Send the hardware to one of Exelon PowerLabs’ sites for PQI critical characteristics testing. PQI ensures defective parts are identified before inventorying and installation, reducing downtime, labor and logistics costs. Testing newly procured parts before inventorying allows failed parts to be replaced for free within the warranty window, resulting in substantial cost savings. PowerLabs can also PQI test inventoried parts to verify older parts still perform their critical function.
PQI Drives Efficiencies
Top Failed Component Categories in the Last 5 Years by the Largest Number of Failed Samples
Exelon PowerLabs’ PQI program is a living program that is continually evolving as we test more parts each year.
|Category||Number of Samples Tested||Number of Failed Samples||Failure Rate|
|Relays||11,066 Tested||966 Failed||8.73% Failure Rate|
|Regulators||2,831 Tested||258 Failed||9.11% Failure Rate|
|Circuit Breakers||2,724 Tested||251 Failed||9.21% Failure Rate|
|Fuses||9,937 Tested||243 Failed||2.45% Failure Rate|
|Sensor Switches||3,149 Tested||197 Failed||6.26% Failure Rate|
View Exelon PowerLabs PQI Case Studies
The average parts failure rate across the PQI community is 7%. PQI provides two very valuable solutions:
- Testing critical components to ensure inventoried parts are fully functional.
- The cost savings of identifying deficient parts while still under warranty and before they are inventoried. This cost savings more than pays for the cost of implementing PQI year after year.