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  Measurement, Test and Calibration
  Original Calibrating Date

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Author Topic:   Original Calibrating Date
Raffy
Forum Contributor

Posts: 38
From:Manila, Philippines
Registered: Mar 2001

posted 19 June 2001 03:18 AM     Click Here to See the Profile for Raffy     Edit/Delete Message   Reply w/Quote
Hi Everyone,
Last week we were been audited by a customer and he suggest that during extension of calibration of a certain equipment, we must still use the original date in which it tells the expiring date, e.g. Calibration Date: 06/01/01, New Calibration date: 07/01/01. Instead of the date of new calibration date to be used, we must used the original date. Does it reflected on the new standard (ISO9001:2000)? Is there any clauses wherein we may deviate? Please advice.
Any feedback would be appreciated.
Thanks in advance,
Raffy

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D.Scott
Forum Contributor

Posts: 37
From:Wellington, OH USA
Registered: Feb 2001

posted 19 June 2001 07:30 AM     Click Here to See the Profile for D.Scott   Click Here to Email D.Scott     Edit/Delete Message   Reply w/Quote
Raffy - Not quite sure where your customer is headed with this but if we are talking about the calibration label on the equipment, IMHO it should show the date of last calibration and the due date of next calibration along with the initials of the technician. There must also be a unique identifier for the equipment to trace back to calibration records.
That is where there is a requirement that original date of purchase, first calibration, repairs, etc. should be kept.
I would try to get further clarification from your customer on what he is looking for.

Dave

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Jerry Eldred
Forum Wizard

Posts: 136
From:
Registered: Dec 1999

posted 19 June 2001 08:45 AM     Click Here to See the Profile for Jerry Eldred   Click Here to Email Jerry Eldred     Edit/Delete Message   Reply w/Quote
Extension of calibration interval in my context is used to temporarily give permission under extraordinary circumstances to use the equipment past it's assigned calibration interval. For example, a unit with a 12 month interval is calibrated on June 15th 2000, and due for re-calibration on June 15th 2001. The user contacts the lab and says it is in the middle of automated testing that cannot be interrupted, and which will complete on July 13th. I review results of a few previous calibrations , and find that the unit has stayed in tolerance for many years. Based on a high confidence level that it will remain in tolerance for the additional one month extension, I add a thirty day extension to the interval.

It is important to still reflect the original calibration date, and perhaps use a special label identifying that this is an extended interval. In no circumstance should the actual calibration date be changed. The label must reflect when the unit was last actually calibrated; that is not negotiable.

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Trakman
Lurker (<10 Posts)

Posts: 9
From:Markham, Ontario, Canada
Registered: Jun 2001

posted 19 June 2001 12:42 PM     Click Here to See the Profile for Trakman   Click Here to Email Trakman     Edit/Delete Message   Reply w/Quote
Jerry,

Good point on the calibration extension. For Raffy, keep in mind that the responsible department defines the interval, ISO does not. The important thing is that an interval is determined. Some equipment may be extended to two years (depending on many factors of course!) but this can still be done. (corrections/beatings/yelling will be tolerated if I am out to lunch...)We recently ran into the catch-22 situation; the customer owned the test gear, but required it to be within calibration. The calib date neared and passed, with numerous requests for approval to calibrate, but was not received. (they are a massive company...) Nevertheless, we still were contractually bound to deliver product using their test equip! The entire situation was completely documented. (very important!) We ended up being forced to utilize the "out of calib" equipment. Yuk!
Trakman

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JerryStem
Forum Contributor

Posts: 11
From:W Chester OH USA
Registered: Apr 2001

posted 19 June 2001 04:48 PM     Click Here to See the Profile for JerryStem   Click Here to Email JerryStem     Edit/Delete Message   Reply w/Quote
We sometimes run into the same problem here. Our tech's and customers may not be able to schedule together in a certain month (we do site cal's also).

We have a special procedure where the customer runs a "stability loop" on the instrument (fairly simple procedure) and faxes the results to us. We then issue a decal to place next to the original cert decal that has the original end date and new end date (+30 days). We also issue a certificate that details what we/they did, with dates.

Interestingly, we changed our cert/recal dates to a month/year format & that has reduced the problem considerably. (Gives the customer & our tech a whole month to get together).

Jerry

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Al Dyer
Forum Wizard

Posts: 622
From:Lapeer, MI USA
Registered: Oct 2000

posted 19 June 2001 05:44 PM     Click Here to See the Profile for Al Dyer   Click Here to Email Al Dyer     Edit/Delete Message   Reply w/Quote
Raffy,

The customer is always right!

Don't sweat the small stuff. Write a clause into your procedure or instruction that covers calibration date extensions (and follow it).

ASD...

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