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Author Topic: extension requirements  (Read 4242 times)

Offline CALSQUID81

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extension requirements
« on: 07-29-2010 -- 18:04:59 »
I'm looking for a guideline (Z540, ISO 17025 etc.) that says whether or not you may extend the calibration of a standard after it has gone past its due date, and if so how long.
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Offline RFCAL

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Re: extension requirements
« Reply #1 on: 07-30-2010 -- 02:43:55 »
that is up to your quality manual

Offline beadwork

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Re: extension requirements
« Reply #2 on: 07-30-2010 -- 11:43:33 »
You might want to do this only if you have enough objective historical evidence about the stability/accuracy of the standard.  This is used to support the decision to take the risk that extending the cal interval will result in an in-tolerance condition when the standard is re-calibrated.

Extending cal intervals is all about risk management.  What would be the ramifications if the standard was found to be out of tolerance at its next re-calibration?
« Last Edit: 07-30-2010 -- 11:45:42 by beadwork »

 

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