Supplier Evaluations

ISO 9001 section 7.4.1 states: “The organization shall evaluate and select suppliers based on their ability to supply product in accordance with the organization’s requirements.  Criteria for selection, evaluation and re-evaluation shall be established.  Records of the results of evaluations … shall be maintained.”

Some customers use site visits to assess the capabilities of the supplier, but ISO 9001 does not specifically require this practice.  Most customers send potential suppliers a self-assessment questionnaire.  Self-assessment questionnaires can be simple or complicated to complete.  Be aware that the likelihood of receiving a response to a questionnaire is inversely proportional to the questionnaire’s complexity.

I’m not in favor of complicated multi-page questionnaires in most cases.  If the organization intends to place a small order with a supplier it is not likely to use often, it is unlikely that a complex questionnaire will be returned in a timely manner, if it is returned at all.  A simple, short questionnaire is more likely to be completed and returned.

If the supplier is to be a key supplier with a significant business opportunity, and a likely long term business arrangement, it may be better to visit the supplier and complete a complex questionnaire yourself in an on-site audit.  Meeting the players creates a better, more lasting relationship with the individuals involved.  These relationships make problem solving over the phone or by e-mail more likely to be successful.   As to what questions to ask, Govind Ramu presents an interesting perspective, in the Expert Answers section of   Quality Progress March, 2013 where he addresses questions to ask and not to ask a supplier.

Consider establishing (and documenting) multiple criteria any of which will qualify the supplier.  Examples might be:

·         ISO 9001 certified

·         Over one year experience with the supplier with few product rejections

·         Franchised supplier (for distributors)

As you collect supplier qualification data, consider storing the responses in a database.  The database facilitates contacting suppliers when quality problems arise and provides a tool for re-evaluating the supplier.  I recommend contacting the supplier near the time when his certification expires, and if it is not certified, annually.  A database can facilitate and automate this work.

Key suppliers, those suppliers who get most of your business, should be rated by some rating system routinely.  The ratings should be fed back to the supplier.  Examples of such ratings might be:

·         On time delivery percentage

·         Number of lots rejected divided by the number of lots received.

·         A multiple of the two above.

For an example of a simple questionnaire visit www.rosehillsystems.com and click on Tools.