Re: [Powernet] RP field instrument tamper seals

Thu, 11 Apr 2019 05:05:47 -0700 

Fort Calhoun Station does not use tamper seals.  Our near zero instance of 
as-found our of calibration (excluding broken instruments), indicates that 
staff are not messing with the instruments.

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David Brehm
Sr. Radiological Engineer
Radiation Protection - Fort Calhoun Station
Omaha Public Power District
FC-3-1
9610 Power Lane, Blair, NE 68008
Office: 402.533.6045
Cellular: 402.237.9840
[email protected]<mailto:[email protected]>

From: Powernet <[email protected]> On Behalf Of Creamer, Charles 
E via Powernet
Sent: Thursday, April 11, 2019 6:19 AM
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Cc: Creamer, Charles E <[email protected]>; 'Mark Tursa' <[email protected]>; 
Jim VanLooven <[email protected]>
Subject: Re: [Powernet] RP field instrument tamper seals

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________________________________
Browns Ferry / TVA does not use tamper seals on RP field instruments


Chuck Creamer
Health Physicist
Radiation Protection

Tennessee Valley Authority; Browns Ferry Nuclear Plant
P.O. Box 2000 (Mail Stop NAB-1G-BFN)
Decatur, Al. 35609-2000

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From: Powernet <[email protected]> On Behalf Of Tom Meek via 
Powernet
Sent: Tuesday, April 9, 2019 2:25 PM
To: [email protected]
Cc: Tom Meek <[email protected]>; 'Mark Tursa' <[email protected]>; Jim 
VanLooven <[email protected]>
Subject: [Powernet] RP field instrument tamper seals


TVA External Message. Please use caution when opening.
I have a question regarding tamper resistant seals for calibration on RP 
meters.  A QA audit made a SFR (supplier finding report) at an instrument 
calibration facility stating vendor should be placing these seals on our RP 
meters.

The cited standard is ANSI Z540:1994 Section 11.5, but after some discussion we 
agreed that this only applies to lab standards.  He also cited ISO 17025:2017 
Section 6.4.12 which states "the laboratory shall take practical measures to 
prevent unintended adjustments of equipment from invalidating results."  The 
auditor said that industry interprets this as requiring tamper seals, but also 
said that complying with the ISO standard was a matter of lab certification 
only (not a regulatory requirement).

Does any site require tamper resistant seals on RP field instruments?  Yes    No

If yes how do you handle routine battery and/or desiccant replacement?

What do you do if a seal is found broken or missing.  In short, would the event 
be entered into the corrective action system?

Do you rely on your source check and zero check of the instrument to "validate" 
its calibration in lieu of the tamper seal?

Thanks in advance
Tom Meek, CHP


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