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The Knowledge and Know-how Connection
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June 17, 2013
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Views: 2378
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It is always a good time listening to you guys.
Just a though after listening to your Board Talk relative to rework being acceptable or unacceptable.
Per IPC–T-50, I believe you have it mixed up between the terms repair and rework. Fixing a circuit board by adding a trace, fixing a pad and stuff like that is a repair, not a rework. Removing an icicle is a rework.
A repaired board or circuit will not look like the drawing although it does restore functionality without being in compliance, it does not look like the print. Rework on the other hand is the act of reprocessing noncomplying articles, through the use of original or alternate equivalent processing, in a manner that assures compliance of the article with applicable drawings or specifications.
I get the words mixed up myself, and over the years I've always wanted to eliminate those words and just say fix it. One example I was given to keep them straight was you put air in your tires when they have low pressure and that is a rework, you put a plug in the tire to stop a leak and that is a repair as it no longer looks like a new tire, it has a plug in it. So rework looks the same, and repair does not look the same.
Just my two cents.
Leo lambert, Vice President, Technical Director, EPTAC Corporation
I enjoy listening to Board Talk, however I must question the definitions you gave of rework and repair. They are opposite those used for military assemblies and the definitions listed in IPC-T-50. For military products, rework restores a nonconforming item to full compliance with the drawing/specifications. Repair restores functionality to the item, but does not result in full compliance to the drawing/specification. Repair requires customer concurrence. Otherwise, the information given in this episode was very helpful, as usual.
Ken Robinson