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Calibration Procedure Traceable to National/International Standards (API Q1 9th Ed)

M

MalDu

#1
It is a requirement that calibration instructions/procedures for instruments/equipment used for product testing are traceable to national/international standards.

When calibration is done based on previous experiences and national/international standards are not available, what would be a good justification/way to be presented to auditors to overcome this issue.

Thanks.
 

Stijloor

Staff member
Super Moderator
#2
Re: Calibration Procedure Traceable to National/International Standards (API Q1 9th E

A Quick Bump!

Can someone help?

Thank you very much!
 

BradM

Staff member
Admin
#3
Re: Calibration Procedure Traceable to National/International Standards (API Q1 9th E

Hello MalDu!

Forgive me for responding to a question with a question, but this is posted in the oil and gas industry forum; and you made this reference: API Q1 9th Ed. So are you asking in terms of this industry/ requirement, or in general?

Too, let's say there are two different components of the calibration: 1) The measurement standard and 2) the procedure standard. So if we're calibrating a pressure gauge for example, 1) would be the master calibration gauge and 2) would be the written standard specifying how to calibrate the particular gauge. Is that correct?

1 must be N.I.S.T. (or equivalent National Standard) traceable; or a Naturally Accepted Standard.

For 2, are you asking if it must come from ASME or some other "recognized" source of such procedures?

I am unfamiliar with oil/gas and of the above requirement, so I would be speaking in general terms. It's alway better to use an existing procedure that is validated and accepted. However, that is not always possible. So if you have to develop your own calibration procedure, it must be demonstrated that the procedure has been tested and validated for use.
 

Sidney Vianna

Post Responsibly
Staff member
Admin
#4
Re: Calibration Procedure Traceable to National/International Standards (API Q1 9th E

It is a requirement that calibration instructions/procedures for instruments/equipment used for product testing are traceable to national/international standards.
Don't confuse instructions/procedures (DOCUMENTS) with standards in this context.

The standards referred to in this context relate to physical, electrical, etc. standards. Not specifications, norms, etc.

So, for example, if you measured a dimension with a micrometer, that device (the micrometer) should be verified/calibrated against a standard (maybe a master gage block) which is calibrated verified against a higher standard and the chain of traceability of these verifications/calibrations should lead as high up as a national (or recognized) standard.
 
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