Hello John,
Regarding equivalency of calibration standards; NIST, the German PTB and
many other nations standards institutes are signatories to the CIPM Mutual
Recognition Arrangement (CIPM MRA). This includes radiation standards. You can
go to the CIPM website: https://www.bipm.org/en/cipm-mra/
to see the members and specifics. All participate in extensive intercomparison
programs to verify equivalence.
This was brought up years ago when I was in HP at the Kewaunee Nuclear Power
Plant. The NRC accepted our use of standards produced by the German, French and
Czech's.
Employing them correctly has, at least to me, always seemed to be where
people made their mistakes................
Best Regards,
Tim
Tim Martinson
Victoreen
A fluke company
Office: 440-498-2548
Cell: 860-734-6957
E-Mail:
[email protected]<mailto:[email protected]>
[cid:[email protected]]
From: Lamons, John [mailto:[email protected]]
Sent: Tuesday, November 28, 2017 1:04 PM
To: [email protected]
Subject: [powernet] The use of equivalent Primary Calibration Standard for
sources
Does anyone take credit for equivalent Primary Calibration Standards for NIST
(ie Primary Calibration Standard of the International PTB) when calibrating
sources? If so, do you have an evaluation that was performed prior to accepting
said standard? Thanks
John Lamons
Health Physicist
Comanche Peak Nuclear Power Plant
254-239-6944
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