Duke Energy offers the following response: 1. The technology that is used Duke Energy uses a vendor (EnergySolutions) to process our waste offsite. Typically, waste is shipped by truck to the processor. The processor sorts the waste for non-compliant items and then ships to a shallow land disposal site in Utah. However, compaction and incineration are available from the processor if desired, but this service is usually more expensive. Class B/C resin from our South Carolina plants is dewatered and shipped for disposal at Barnwell, SC. Class B/C resin at our North Carolina plant is being stored onsite as we evaluate vendor proposals for processing or storing this waste.
2. How the radwaste is processed See above. 3. How the activity is calculated in radwaste Activity is typically calculated by dose-to-curie methods and scaling factors are used to quantify non-gamma emmiters. For resin media, direct samples are taken to characterize the waste also using scaling factors for non-gamma emitting nuclides. 4. How the dose rates are measured on radwaste before packaging and after the radwaste is packaged. Careful surveys are performed on packages/items to be used for the characterization survey data. Filters are surveyed individually prior to packaging and the dose-to-curie (and waste class) is calculated on each individual filter. Other waste (DAW) is surveyed in full containers and characterized collectively as one container. The Radman software has a dose-to-curie engine which performs the dose-to-curie calculations. In you need more information, you can contact me directly. Thank you, Graham Johnson, CHP 704-382-7717 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tertius Karsten Sent: Wednesday, August 03, 2011 11:01 AM To: powernet Subject: Powernet: Radwaste database We are in a process of improving the current Radwaste Program used at Koeberg Nuclear Power Station to track radwaste packages from beginning to end, in order to be in line with the latest technology used by other nuclear utilities. We would appreciate if you can assist us with the radwaste program that you currently use in your utility. The information we are looking for can include but not limited to: 1. The technology that is used 2. How the radwaste is processed 3. How the activity is calculated in radwaste 4. How the dose rates are measured on radwaste before packaging and after the radwaste is packaged. Thank you Tertius Karsten Radiation Protection Koeberg NPS NB: This email and its contents are subject to the Eskom Holdings Limited EMAIL LEGAL NOTICE which can be viewed at http://www.eskom.co.za/email_legalnotice ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected] If Questions, contact Mike Russell, CHP at [email protected] ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected] If Questions, contact Mike Russell, CHP at [email protected]
