ISO 7.3 Design and Development Part 2
You’ve assigned your design team, gathered your inputs and know what the outputs of your design need to be. Now, it is time to go to work. This is where following the ISO 9001:2008 requirements can save you time, money and headaches!
Designs are not often completed in a day or a week. So ISO 9001 7.3.4 requires systematic reviews to ensure that the outputs are appropriate and extensive enough to meet the inputs and production needs. Problems and opportunities are noted and actions proposed.
This is where the savings and cost avoidance occur. It is far easier to correct issues during this phase than during production, or, heaven forbid, in the field!
While there are no specific techniques required by the standard, I strongly recommend that you use Failure Mode and Effects Analysis (FMEA) to help you identify and eliminate/mitigate design risks.
Now, onto a topic that causes a fair amount of confusion: Verification and Validation. 7.3.5 and 7.3.6.
Put simply:
Verification: Objective evidence that you are building the product “right”. Does the product meet the stated inputs?
Validation: Objective evidence that you are building the right product. Does the product work in the customer application?
Returning to the design of Pen3000 (May 27, 2014 blog posting),
During verification phase SuperPen Inc. used prototype testing to verify that Pen3000 was able to write for 1000 m in a temperature range of -15°F to 150°F.
The requirement the Pen300 must write immediately after being “open” for 24 hours proved a bit more problematic. The first round of testing had a 20% failure rate. The design was reexamined and a change made to the ink type used. Subsequent testing of the new design was successful. Purchasing was notified of the change in requirement.
Validation ensures that the product works in the intended environment. SuperPen sent 1000 prototype pens to their customer. The customer, in turn, sent them out for field use and evaluation. They worked perfectly. The pens were then released to full scale production.
One more item. In fulfilment of 7.3.7 and common sense, the design changes, including the specification for the ink used, that were spurred by the verification testing documented, verified, and formally approved.
The following graphic pulls it all together:
Next time we'll discuss the key areas of purchasing and supplier relations.
Enjoy your day!
Regards,
DonnaLynn
508-641-5930