Re: Xenon-133 monitoring

["Tosh Ushino" <tushino@icnpharm.com>]

While at San Onofre Nuclear Generating Station, we started using the method
developed by Mike Lantz, et al, at Palo Verde for tracking noble gas exposure.
This  method using whole body counter was published in Radiation Protection
Management few years ago. Of course, we had to conduct our own investigations to
develop San Onofre site specific conversion factor, but the method Mike
developed worked beautifully. Saved us a lot of headache. Atta boy Mike!

Tosh Ushino
tushino@icnpharm.com
ICN Dosimetry






Brent_Robinson@fpl.com on 05/18/99 03:48:41 AM

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To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Tosh Ushino/HQ/ICN)
Subject:  Re: Xenon-133 monitoring




I usually agree with you, but claiming that gas will permeate through any
dosimeter and render it useless is inaccurate.  The actual free space or gas
volume in any dosimeter is very small relative to a semi-infinite cloud.   The
effect of the gas inside the dosimeter is inconsequential in this scenario.  I
was involved in an evaluation of TLDs, electronic dosimetry and dose rate meter
response to noble gas environments in a PWR containment.  The TLD was able to
discriminate.






"Sandy Perle" <sandyfl@earthlink.net> on 05/17/99 03:51:10 PM

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To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Brent Robinson/Psl/Nuclear/FplNuc)
Subject:  Re: Xenon-133 monitoring




One more factor... Xe-133 is a gas (submersion geometry), and
therefore will permeate any dosimeter.. rendering the various filters
(TLD or film) useless in differentiating the energy or radiation type.

Sandy Perle
E-Mail: sandyfl@earthlink.net
Personal Website: http://www.geocities.com/capecanaveral/1205

"The object of opening the mind, as of opening
the mouth, is to close it again on something solid"
              - G. K. Chesterton -
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