Fort Calhoun is evaluating the implications of switching to a different TLD 
vendor.  A change would most likely result in changing from the Panasonic 
UD-802 TLD to Landauer OSL or Harshaw 760 as they are the most prevalent in the 
industry.

Would appreciate any light you can shed on these questions, or anything else I 
failed to ask here that you think is relevant -


1)     If you have switched TLD vendors within the last several years, what 
process did you follow and what were your experiences making this transition?  
What recommendations would you have to make this a smooth transition?


2)    If you have changed the type of TLD you used, same question as above


3)    If you use either Landauer OSL or Harshaw 760 TLDs, what is your 
experience with them for normal use?



4)    What is your experience for measuring neutron during containment entries 
at power or dry cask storage activities?



5)    Do you use the OSL or Harshaw with the lithium on one of the elements or 
the CR-39 chip, or both?  Your experience with neutron measurement using these 
TLDs?


6)    If you use Mirion or Landauer as a TLD vendor, how would you rate their 
performance and abilities?  Any areas where they excel or are lacking?


7)    If you use the Harshaw, do you use the copper doped version?  If not, how 
come?



8)    What TLD do you use for area monitoring?  What impact did changing 
vendors or TLDs have on area TLD results?

Feel free to reply to powernet, or email or contact me directly.  Documentation 
you are willing to share is also welcome.

Thanks,
Dohn

Dohn Little
Omaha Public Power District
Radiation Health Specialist - Dosimetry
Fort Calhoun Station - FC 2-1
[email protected]  -  (402) 533-7162

Fort Calhoun Station FC 2-1
9610 Power Lane
Blair, Ne. 68008

[cid:[email protected]]


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