Duke Energy uses the parallel sample method noted in EPRI TR-107201. A instrument sample line and crud filter is installed parallel with the filter vessel.
From: [email protected] [mailto:[email protected]] On Behalf Of Holmes, Stephen J Sent: Friday, May 27, 2011 1:09 PM To: '[email protected]' Subject: Powernet: Characterization of cartridge filters Looking to benchmark best practices on characterization of filters used in liquid processing systems (e.g. Trinuc filters) for shipment/disposal. At Ginna, our practice is to take a core-bore type sample of each filter. The nuclide information obtained is then used to perform dose-to-curie evaluations. We have been challenged as to whether this practice is efficient and ALARA. What is everybody else doing? - "Core-bore" sample of each filter? - "Core-bore" sample of a representative selection of filters? o How do you ensure your selection is representative? - Smears? o Where/how many? - Something else? Have your chosen techniques been questioned/challenged by the regulators? Thanks, -Steve Stephen J Holmes Sr. Plant Health Physicist RE Ginna NPP Constellation Energy Nuclear Group [email protected] 585-771-3577; 585-545-1661 (cell) >>> 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. CEG-IP2
