Re: Contensious thoughts!!
Originally posted by Jim Biz
Guess I've often wondered why a number of folks really believe that
FMEA (in one form or another) is
mandated by the standards.
This is because, if you look closely, you will see that the ISO 9001 revision was
strongly influenced by QS-9000. If you take a trip back into time to
The Old Forum Archives (Note: Clicking the link will call up a pretty big - 350k - page) - and even within these newer forums - you will see that addressing the requirement in QS-9000 for predictive methods was, as a minimum, fulfilled by FMEAs.
Another 'preventive' issue is: If you react to a corrective action and part of that reaction is to review other products / processes where that 'error' may occur in, is this really a preventive action. I think the current agreement is that this is preventive even though the origin was from an 'error'.
Between auditors and registrars who are involved in both ISO and QS the 'recommendation' for an FMEA comes out. This is in part because of the limited number of tools which are predictive. Just to recall how pretentious the issue gets when you come to distinguishing predictive vs. preventive, remember this thread?
http://Elsmar.com/Forums/showthread.php?t=687
This also came this weekend:
> Hi Marc,
>
> Thanks for your reply on loss prevention issue. The major difference
> between Motorola and us is that we actually grow the compound semi-
> conductor wafers for customer end use and conversion into workable devices.
>
> We effectively have a one step manufacturing process (growth of epi
> taxial wafers) completed in one step, controlled by Mass Flow Controllers
> via computer program.
>
> We have talked about performing FMEA on the actual processes
> involved in all the manufacturing stages as opposed to FMEA on the product.
>
> Our customers supply us with their design specifications and we make the
> wafers to their spec.
>
> Ultimately we are looking for a better tool to achieve a
loss
>
prevention mechanism.
The bottom line is you're looking for a
predictive risk analysis tool to address loss prevention - a predictive methodology. In considering the FMEA I prefer a procsss FMEA as opposed to a product FMEA. In you case, I think a product FMEA would be a pain. I would insist on process FMEAs.
OK gang - Ideas on Process Loss
Prevention Tools? I did some searches here and there's virtually nothing specific - other than with respect to FMEAs...