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Component Manufacturing dverti$er
May 2018 #10226 Page #26
Adverti$er
Don’t Forget! You Saw it in the
Do You Need 100% Inspected for Proper QA?
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process that requires the inspection of each individual unit or component received from a process or manufacturer is said to be “100 percent inspected.” When fabricators initially consider a quality program, this is what they imagine is necessary. This 100% process, however, is time- and labor-intensive, so it should only be employed when the results or negative outcome become more important or valuable than the cost to perform. An example might be inspecting O rings on a space shuttle. Should all the rings be inspected? A device used for surgery? Some mission critical processes might have a very high failure cost, so the need for 100% inspection is apparent. But what about less obvious situations? How much inspection should we perform? Fault tolerances or failure tolerances are generally evaluated as an industry. Examining the truss industry and its history, we find the most likely issues that cause failure actually involve the installation of the product. Installation-related failures are far more probable than manufacturing issues. Much lower in likelihood are failures that involve design errors, including wrong loading, misapplication of material values, and incorrect interpretation of design elements. So, if manufacturing errors are rare, then what needs to be done? Do you need to address it? The answer is: YES. The truth is that each manufacturer must address their responsibility to produce a product free from manufacturing defects that can affect their performance. Manufacturing quality may not be a major issue in a different context of potential product failures, but it is a critical issue for the success of your business. Let‘s discuss a few reasons to employ a TPI 1 compliant program.
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