We use a Tennelec APC II Gas Flow Proportional Counter. We have a limit of 500,000 dpm/100cm2 beta-gamma. Above 500,000 dpm/100 cm2 we would instruct the technician to halve or quarter the smear to get activity below the limit.
From: [email protected] [mailto:[email protected]] On Behalf Of Byrum, William F Sent: Monday, August 27, 2012 7:46 AM To: [email protected] Subject: Powernet: Alpha Counting Duke Energy request to following information: What do you use to count smears for alpha/ beta activity? Canberra iSolo, Ludlum 3030P, other? Do you have a limit on the activity (dpm) that can be counted using a smear counter? And if you have a limit on activity, what is the limit and how do you count smears above the activity limit (beta) for alpha? Bill Byrum, CHP,RSO EnRad Laboratories Duke Energy [email protected]<mailto:[email protected]> Phone 980.875.5811
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