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RE: Comparison of Electronic Dosimeters to TLDs



John,

Power plants that use our equipment have comparison data between the ED
and TLD.  Typically the data that I have seen is between 5 to 20 percent
low for the EDs.

Jim Kost
jkost@mgpi.com

-----Original Message-----
From: CHASE John -NUCLEAR [mailto:john.chase@ontariopowergeneration.com]
Sent: Wednesday, February 09, 2000 11:53 AM
To: Multiple recipients of list
Subject: Comparison of Electronic Dosimeters to TLDs


Has anyone compared Electronic Dosimeter results to TLD results in
nuclear
power stations. We have done so with one kind, and find that the ED
under-responds by about 12%, but it varies a little depending the
station
and whether there is an outage going on or not. For our situation, the
angular response of our TLD goes above 1.0 as the angle of incidence
goes to
60* and beyond, but the Electronic Dosimeter's response goes below 1.0
at
60* and beyond, because of the additional material beside and behind the
detector. Has anyone seen this kind of under-response before? Does
anyone
have field data that compares the response of TLDs and EDs?


Thanks in advance

John Chase
Sr. Specialist, Dosimetry
Radiological Protection Division
Ontario Power Generation Nuclear
(905) 430-2215, ext. 3242

john.chase@ontariopowergeneration.com
<mailto:john.chase@ontariopowergeneration.com> 

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