See Duke Energy response: * Do you use TLDs or OSLDs? TLD (Harshaw) * What type of ED do you use? DMC2000S and DMC2000GN * Do you bias your EDs high? If so, how much? 15% as of June 2011, 5% previously * How long are your monitoring periods? 6 months * What are your typical TLD/OSLD vs. ED results during a normal period? During an outage? Non-outage ~0.75, Outage ~0.9 - 0.95 (previously with 5% bias it floated around 1.00) * Are your results consistent? Yes * Do you use a vendor for processing or is it done in-house? In-house * Which vendor do you use? N/A
Chris Courtenay Engineer, Duke Energy 980-875-5005 "To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be." From: [email protected] [mailto:[email protected]] On Behalf Of Amber Cassell Sent: Thursday, January 26, 2012 2:47 PM To: [email protected] Subject: Powernet: TLD/OSLD vs. ED Dose Dresden has recently switched over from TLDs to OSLDs. We would like to get an idea of what to expect regarding OSLD vs. ED results. We would also like to compare our TLD vs. ED results with others in the industry. I would like to pose the following questions: * Do you use TLDs or OSLDs? TLD (Harshaw) * What type of ED do you use? DMC2000S and DMC2000GN * Do you bias your EDs high? If so, how much? 15% as of June 2011, 5% previously * How long are your monitoring periods? 6 months * What are your typical TLD/OSLD vs. ED results during a normal period? During an outage? Non-outage ~0.75, Outage ~0.9 - 0.95 (previously with 5% bias it floated around 1.00) * Are your results consistent? Yes * Do you use a vendor for processing or is it done in-house? In-house * Which vendor do you use? N/A Would anyone be willing to share data for the % difference in TLD/OSLD vs. ED from last 2 years? Amber Cassell, MHP Dosimetry Specialist Dresden Station 815-416-2417 [email protected]<mailto:[email protected]>
