Measuring Supplier Quality Performance

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biggina

#1
Hello all, new to this site, been viewing from afar and using the shared knowledge to assist us setting our company's quality objectives, measures and targets, it has been a tough few weeks!!

So we are collecting a lot of data but our system is not user friendly so we are having to do a lot of manual calculations, using spreadsheets, etc.

All has been going well until we hit a brick wall, supplier quality performance.

We want to score our suppliers on a monthly basis, the score is on delivery and quality.

Delivery is easy we have that sorted but we have hit a snag with quality performance especially with our sub contractors.

An example:-

In April supplier X delivered 2 line items in but we raised 9 NCR's against him. The reason being we inspected parts in April that were delivered in March or Feb.

So in essence when we send the performance figures out they are going to look rather odd!!

This is an ongoing problem because we dont inspect incoming parts instantly many a time they are inspected in the following month?

Anybody hit the same problem, and if so how did you resolve it?

Basically we are looking for a strong robust way of measuring supplier quality by analysing NCR's.

Many thanks
 
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Tara Monson

#2
Have you thought about doing a cumulative, running calculation? Instead of checking numbers my month, just keep a running total - but report that total at end of month. Use the trending of nonconformances (hopefully going down) as a way to assess your suppliers, not how many/month.

Just an idea!

Good luck!
 
B

biggina

#3
Many thanks for the speedy response Tara, didn't expect feedback that quickly.

I follow what you mean, that is how our customers score us but how do I turn this months 9 NCR's for example into a percentage?
 
G

G_arion

#4
Many thanks for the speedy response Tara, didn't expect feedback that quickly.

I follow what you mean, that is how our customers score us but how do I turn this months 9 NCR's for example into a percentage?
With the way you inspect equipment some time after it is returned to you it seems the only sensible way of measuring it is to do assign NCRs to the relevant month. It does mean the monthly report you generate will have to show the entire year rather than just the month previous however.

I would say doing this cumulatively is the best option. Perhaps create a basic spreadsheet where you have a tab for each month with a list of suppliers, a list of items delivered for the relevant month and number of NCRs - that way you can back date things and keep a cumulative record.

The system we use relates to inspection upon delivery, so wouldn't be effective in terms of your requirements. Although as stated might be a more prudent system in any event.
 
Last edited by a moderator:
S

silentrunning

#6
Have you considered changing your incoming materials inspections process to be more timely?
That would benefit the company in more than one way. A supplier should be notified of an NC immediately. If not they may start running the next month's delivery and keep making the same mistake. You could run out of parts or receive a second delivery of NC parts. It would be far better if the supplier was notified of a NC in a timely fashion.
 

normzone

Trusted Information Resource
#7
I've been down this road before, and here's my question.

If you do all this, what are you gaining from it?

If you can actually drive improvements in supplier performance, or reduce the trauma and drama in your production line by doing this, then there may be justification to go further down this road.

But often such concerns are driven by the perceived need to crunch the available data down to smaller and more timely bites. At the end of that road is a massive team of inspectors going through every piece of every lot of materials upon arrival and real time communications to the supplier.

Assess your organization's situation and figure out where the sweet spot is. Sometimes less is more. Some of the time spent crunching this data may be better invested in other projects.

Just my opinion, don't let me rain on your parade.
 

Bev D

Heretical Statistician
Leader
Super Moderator
#8
normzone has it spot on. don't worry about the time lag - work on solving the problems. Think about it this way - how does tagging the failure to a different month in the data change the actions you should be taking. We often issue NCRs/CARs fro failures that aren't detected until later in IQA, mfg or even the field. at some point we need to know what part range affected but this can be done ad hoc as needed. The reason for reporting the NCRs isn't to make pretty charts - its to fix the problems...
 
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