![]() I certainly don’t recommend or support the use of whiteout or correction tape on controlled documents, particularly when the changes are isolated or infrequent. This is especially true when complex design is involved and prototype work may include frequent changes and last for weeks, months or longer. Marking, initialing and dating every change made on preliminary design documents during the prototype phase is a good idea in theory, but may not always be practical. Managing Director of Aston Technical Consulting Servicesĭrawings and other supporting documents used during prototype testing or product development will normally go through numerous changes before they are finally approved and issued to produce a finished product. These results are usually intended for informational purposes only and not for final acceptance of a process or product. However, prototype test results which may be subject to frequent changes during preliminary inspection or test activities, doesn’t require the same level of control. This is of special importance if these records are intended to provide evidence of product or process conformance. With regard to your inquiry, changing the documented results of inspection or test activities should be avoided or at least strictly controlled. Thanks for contacting ASQ’s Ask the Experts program. Do you guys see any problem using white out tape / correction tape on the controlled copies during prototype stage? My point is that the original values are recorded on the originals that will be obsoleted and the new ones on the initial release, keeping the controlled copies marked as records of the prototype. ![]() ![]() ![]() from the original version, with white-out tapes (before was liquid paper) once the prototype works those changes are incorporated as “Initial release” in the package that goes out for manufacturing. During those adjustments we change manually circuits, values, etc. It is common that during the prototype stage we performed dozens of changes due to the differences between the calculating/design program (electrical) and what happens in real life. We have prohibited the use of any type of correction on all processes company wide. During our certification for AS9100C the auditor found some documents with correction liquid that we have used for years. ![]()
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