Demand of PPM evaluation suppliers

In relation with ISO TS 16949 / QS9000 is there a demand to measure your suppliers on quality performance by PPM which can be used in supplier evaluation.
I know it is a common way but is it a demand?

If yes, were to find

Thanks
Wil

[Roger Eastin]

I don't think you HAVE to evaluate them using PPM. That's just a good technique.

There is no requirement for PPM measurements of your supplier. And as Roger noted it is a good measurement, as long as the criteria for the measurement is documented and relayed to the supplier.

By defining the criteria take into account the following:

- If you find 1 bad part in a 300 pc. batch of product, is the PPM 1 or 300.

- If a shipment is rejected because it has the wrong bar code label on 1 box of 20 shipped what would you define as the PPM?

I guess the main thing is to determine, document, and communicate the requirements to your suppliers.

Common supplier measurements:

PPM
Delivery
C/A response time
# of CAR's
Effectiveness of CAR responses (repeat CAR's)
Meeting continuous improvement goals
Meeting PPAP deadlines
Correct shipping/receiving information

etc...

Hope this helps,

ASD...