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View Full Version : Calibration of Measurement Equipment - Meeting the minimum requirements of 7.6


hokieman
2nd August 2005, 02:35 PM
Hello Everyone!

I would like to purpose what we think we want to do and fish for bites from you guys!

Calibration is a huge bee's nest for my manager. He wants to calibrate as few gages as possible and obviously still produce a quality product :mad: . We are a small company(46 emp's) with about 250 assorted gages. 75% of which we never use.

The first of each part that we produce must come through inspection before it proceeds to the next operation. Inspection buys the part off on calibrated equipment. What he is wanting is as follows and what are your opinions:

1. Only gages inside the inspection area will be addressed in the calibration system.

2. All other gages that might be on the floor, or employee owned gages will be marked for "reference use only" and not maintained in the system. The employee will only be allowed to "monitor" his measurements using gages outside the system. His first piece will be inspected by QA(w/ calibrated gages) and the operation approved, signed off by QA, and released to the next operation. Final inspection of the finished lot will be done per 105E(sampling).

3. Keep in mind that my Manager is willing to assume the liability of an employee producing a part out of tolerance with an uncalibrated gage and will ensure that this NC product doe not reach the customer. We produce in small quantities usually no more than 10 pcs per order and rarely have a problem with meeting customers requirements.

Alright! Let me have it! :eek:

jmp4429
2nd August 2005, 03:03 PM
Yikes, you have more than 5 gages per employee! If you really don't ever use a lot of your gages, why not pull them off the manufacturing floor and lock them up somewhere? Then if you ever wind up needing one of them, you can get it out and calibrate it before putting it back into service.

I don't like the idea of "For Reference Only" gages. If you're going to make decisions affecting the product with the gage, it's not for reference only. If it is for reference only, then why are you making that measurement in the first place?

Hershal
2nd August 2005, 11:25 PM
What you propose is workable, HOWEVER,

I agree with both jmp4429 and the late Phil Stein.....if the measurement matters, calibrate the equipment, if the measurement does not matter, why make it?

The 75% of gages that are never used should be made inactive and secured, not available for use.

For the other gages, the best advice is to use an accredited calibration lab (make sure the accrediting body for the lab is IAS, A2LA, L-A-B, NVLAP, SCC/CLAS).

Hope this helps.

Hershal