We would use an alpha frisker if greater than 100k dpm beta. However, our "high
contamination" is about 20 mrad/hr rather than 15 R/hr. Although EPRI would
specify alpha counts in this situation, I think you've identified what your
real radiological risk would be for this work. Hopefully, you would be able to
find some smears with reasonable levels of beta to validate the alpha ratios
for the work.
________________________________
From: Powernet <powernet-boun...@hpspowernet.org> on behalf of Hood, Eric via
Powernet <powernet@hpspowernet.org>
Sent: Tuesday, June 5, 2018 1:54:33 PM
To: 'powernet@hpspowernet.org'
Cc: Hood, Eric
Subject: [EXTERNAL] [Powernet] Alpha Determination
During our last S/G outage diaphragm alpha levels were not determined due to
beta/gamma being too high(actual around 15R/hr) to count for alpha . We did
not have an alpha frisker available. How does anyone else count for alpha with
high beta/gamma?
[STP Logo]
Eric G. Hood
Staff Health Physicist - ALARA
(361)972-7928
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