What type of alpha frisker do you use and will it meet an MDA of 20 dpm/100cm2?
From: Creamer, Charles E [mailto:[email protected]] Sent: Sunday, October 21, 2018 10:00 AM To: [email protected] Cc: Diehl, John <[email protected]>; Billings, Dewayne <[email protected]> Subject: RE: [Powernet] How do you count for Alpha when beta-Gamma activity is greater than your limits for count room equipment? **THIS EMAIL IS FROM AN EXTERNAL SENDER OUTSIDE OF THE STPNOC NETWORK. BE CAUTIOUS ABOUT CLICKING LINKS OR OPENING ATTACHMENTS FROM UNKNOWN SOURCES. DO NOT PROVIDE PERSONAL INFORMATION SUCH AS SS#, USER ID/PASSWORD, ETC.** At Browns Ferry we use an Alpha frisker for high activity smears. We have a Plexiglas jig that fits over the smear and holds the probe while the smear is being counted. Does pretty well at keeping the probe from being contaminated and the jig is easily cleaned up after the tech is finished Chuck Creamer Health Physicist Radiation Protection Tennessee Valley Authority; Browns Ferry Nuclear Plant P.O. Box 2000 (Mail Stop NAB-1G-BFN) Decatur, Al. 35609-2000 256.729.2983 (w) [email protected]<mailto:[email protected]> [https://lakeinfo.tva.gov/web/images/tva_logo_32b.png]<https://tva.com/> [https://lakeinfo.tva.gov/web/images/blue_line.png] [https://lakeinfo.tva.gov/web/images/facebook2.png]<https://www.facebook.com/TVA/>[https://lakeinfo.tva.gov/web/images/twitter2.png]<https://twitter.com/tvanews>[https://lakeinfo.tva.gov/web/images/instagram2.png]<https://instagram.com/tva>[https://lakeinfo.tva.gov/web/images/youtube2.png]<https://www.youtube.com/user/TVANewsVideo>[https://lakeinfo.tva.gov/web/images/linkedin2.png]<https://www.linkedin.com/company/tva>[https://lakeinfo.tva.gov/web/images/flickr2.png]<https://www.flickr.com/photos/tennesseevalleyauthority/> NOTICE: This electronic message transmission contains information that may be TVA SENSITIVE, TVA RESTRICTED, or TVA CONFIDENTIAL. Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you are not the intended recipient, be aware that any disclosure, copying, distribution, or use of the content of this information is prohibited. If you have received this communication in error, please notify me immediately by email and delete the original message. From: Powernet <[email protected]<mailto:[email protected]>> On Behalf Of Diehl, John via Powernet Sent: Sunday, October 21, 2018 3:20 AM To: '[email protected]' <[email protected]<mailto:[email protected]>> Cc: Diehl, John <[email protected]<mailto:[email protected]>>; Billings, Dewayne <[email protected]<mailto:[email protected]>> Subject: [Powernet] How do you count for Alpha when beta-Gamma activity is greater than your limits for count room equipment? TVA External Message. Please use caution when opening. How do other nuclear plants count smears for alpha when the beta-gamma contamination levels are greater than your limits for counting in scalers or tennelecs or other counting device? (e.g. >100,000 dpm/100cm2) Do you allow technicians to take a smear of a smear? Do you allow technicians to cut smears to reduce activity? Thanks John Diehl, CHP South Texas Project Health Physics
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