Ginna response below: Stephen J Holmes, CHP, PE Sr. Plant Health Physicist, CENG-RE Ginna NPP [email protected] 585-771-3577
From: [email protected] [mailto:[email protected]] On Behalf Of Benjy P Bertossi Sent: Tuesday, July 16, 2013 6:53 AM To: [email protected] Cc: James P Stewart Subject: Powernet: DLR / TLD practices Fermi 2 will be installing hand geometry this year and will allow security keycards to go home. We currently store our DLRs on security key cards and would appreciate your input on the below questions: 1) What type of DLR (TLD, OSL, Film) do you use? OSL 2) Does your site take DLRs home? Yes 3) If no, how/where do you store them on site? 4) If yes, do you use control dosimetry from on-site, off-site, or both to subtract background radiation? Periodically, we will perform a background study in which we send control DLRs to a selection of people's homes for the quarter. These will be used to determine the background to be subtracted. 5) How do you do DLR exchange and how long does it take you? Set up an area where we require everyone to drop off their DLRs and pick up the new ones. Most people exchange right away, but it can take several weeks before we track down all of the DLRs. 6) Any other pros/cons of taking DLRs home vs staying on site? (+) DLR semi-permanently attached to badge lanyard so it is very unlikely to come off and get lost. (-) Background variability and increased chance that someone taking their DLR home with them will do the wrong thing (e.g. send it through an x-ray machine) Please respond to Powernet or Jim Stewart directly, [email protected] (734.586.1388) Thanks, Benjy Benjy Bertossi Fermi2 - RP Supervisor 734-586-4935 [email protected] This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -EXCIP
