[ RadSafe ] Panasonic UD-814 Technical Specification Sheet (hope the link is better this time)

[Sander Perle]

This is the link:

https://na.industrial.panasonic.com/products/hvacr-appliance-devices/radiati
on-measurement-systems/dosimeters

Hopefully it comes through better this time…


From:  <radsafe-bounces at health.phys.iit.edu> on behalf of Sander Perle
<sandyfl at cox.net>
Reply-To:  "The International Radiation Protection (Health Physics) Mailing
List" <radsafe at health.phys.iit.edu>
Date:  Thursday, April 7, 2016 at 10:34 AM
To:  "The International Radiation Protection (Health Physics) Mailing List"
<radsafe at health.phys.iit.edu>
Subject:  Re: [ RadSafe ] Panasonic UD-814 Technical Specification Sheet

> Here are the various Panasonic dosimeter specs:
> 
> https://na.industrial.panasonic.com/sites/default/pidsa/files/downloads/file
> s/radiationmeasurementsystems_dosimeters.pdf
> <file://localhost/Users/sanderperle/Downloads/radiationmeasurementsystems_do
> simeters.pdf> 
> 
> The three CaSO4 elements are all behind the same filtration, and are
> averaged not because of the manufacturing inconsistency, but for better
> statistics. The process for any TLD is to normalize each element on a TLD to
> a known value, and this is the Element Correction Factor (ECF) Panasonic, or
> typically the Element Correction Coefficient (ECC) for Harshaw type TLDs.
> 
> Your comment "The variability amongst the three calcium sulfate elements is
> assessed and if not acceptable additional TLD measurements will be made² is
> not technically a logical statement. Consider that the elements are very
> close to each other on the TLD card, and, these environmental dosimeters are
> used for that specific purpose, typically gamma and x-ray, where there is
> not going to be much variability. If there is a variability that causes one
> to take additional TLD readings, then there is an issue with the process
> that the facility if following in establishing ECFs. Of course one can
> assess angularity, but that is not typically an issue in these field
> measurements.
> 
> Regards,
> 
> Sandy
> Retired, Consultant
> 
> From:  <radsafe-bounces at health.phys.iit.edu> on behalf of Stacey Alderson
> <salderson at stoller.com>
> Reply-To:  "The International Radiation Protection (Health Physics) Mailing
> List" <radsafe at health.phys.iit.edu>
> Date:  Thursday, April 7, 2016 at 10:22 AM
> To:  "radsafe at health.phys.iit.edu" <radsafe at health.phys.iit.edu>
> Subject:  [ RadSafe ] Panasonic UD-814 Technical Specification Sheet
> 
>>  Can anyone help with providing a technical specification sheet for the
>>  Panasonic UD-814AS TLD?  Also, I am reviewing a document in which a single
>>  UD-814AS is placed at a height of 1 meter for 90 days.  After the exposure
>>  period the single TLD is recovered and processed.  The variability amongst
>> the
>>  three calcium sulfate elements is assessed and if not acceptable additional
>>  TLD measurements will be made?  The document infers that the three calcium
>>  sulfate elements are independent measurements.  Is this an acceptable
>> method?
>>  I was under the assumption that the average of the three elements was used
>> to
>>  account for element manufacturing inconsistency and annealing.
>>  
>>  Thanks,
>>  
>>  Stacey Alderson
>>  
>>  
>>  
>>  
>>  
>>  
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> 
> 
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